AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 18, 2001
                                                     REGISTRATION NO. 333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                 ---------------
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                        L-3 COMMUNICATIONS HOLDINGS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)



                                                   
                     DELAWARE                                        13-3937434
(State or Other Jurisdiction of Incorporation)        (I.R.S. Employer Identification Number)


                                3812, 3663, 3679
            (Primary Standard Industrial Classification Code Number)

                                 ---------------

                                600 THIRD AVENUE
                            NEW YORK, NEW YORK 10016
                                 (212) 697-1111
               (Address, including zip code, and telephone number,
        including area code, of Registrant's principal executive offices)


                       SEE TABLE OF ADDITIONAL REGISTRANTS
                                 ---------------
                          CHRISTOPHER C. CAMBRIA, ESQ.
                                600 THIRD AVENUE
                            NEW YORK, NEW YORK 10016
                                 (212) 697-1111
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                 ---------------

                                    Copy to:
                              VINCENT PAGANO, ESQ.
                           SIMPSON THACHER & BARTLETT
                              425 LEXINGTON AVENUE
                          NEW YORK, NEW YORK 10017-3954
                                 (212) 455-2000

                                ---------------

     Approximate date of commencement of proposed sale to the public: From time
to time after the Registration Statement becomes effective as determined by
market conditions and other factors.

                               ---------------

     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]

     If any of the securities being registered on this Form are to be offered
on a delayed or continuous basis pursuant to Rule 415 under the Securities Act
of 1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box. [X]

     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ]

                                ---------------

     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

                                ---------------

     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [ ]


                                                   (Continued on following page)
================================================================================


(Continued from previous page)


                        CALCULATION OF REGISTRATION FEE


================================================================================================================================
                                                                         PROPOSED MAXIMUM         PROPOSED         AMOUNT OF
             TITLE OF EACH CLASS OF                  AMOUNT TO BE       AGGREGATE OFFERING    MAXIMUM AGGREGATE    REGISTRATION
          SECURITIES TO BE REGISTERED                 REGISTERED        PRICE PER SECURITY      OFFERING PRICE         FEE
--------------------------------------------------------------------------------------------------------------------------------
                                                                                                       
4.00% Senior Subordinated Convertible
  Contingent Debt Securities (CODES) due 2011..     $420,000,000(1)          100%(2)(3)        $420,000,000(2)      $100,380
--------------------------------------------------------------------------------------------------------------------------------
Common Stock, par value $.01 per share..........  3,902,439 shares(4)           (5)                  (5)               (5)
--------------------------------------------------------------------------------------------------------------------------------
Subsidiary Guarantees of 4.00% Senior
  Subordinated Convertible Contingent Debt                                                                             (6)
  Securities (CODES) due 2011 ..................          N/A                   (6)                  (6)
================================================================================================================================


(1)   Includes $350,000,000 aggregate principal amount of CODES offered in an
      initial offering and $70,000,000 aggregate principal amount of CODES
      offered upon the exercise in full of the initial purchasers' option to
      purchase additional CODES.

(2)   Estimated solely for purposes of calculating the registration fee in
      accordance with Rule 457(i) of the Securities Act of 1933.

(3)   Exclusive of accrued interest and distributions, if any.

(4)   Represents the number of shares of our common stock that are initially
      issuable upon conversion of the CODES registered hereby. The estimated
      number of shares of common sock to be issued upon conversion of the CODES
      is based on a conversion price of $107.625 per share of common stock and
      assumes conversion of all of the CODES into shares of our common stock.
      In addition to the shares set forth in the table, pursuant to Rule 416
      under the Securities Act of 1933, as amended, the number of shares
      registered includes an indeterminate number of shares of our common stock
      issuable upon conversion of the CODES, as this amount may be adjusted as
      a result of stock splits, stock dividends and antidilution provisions.

(5)   We will not receive additional consideration in connection with the
      conversion into our common stock by the holders of the CODES, and
      therefore, no registration fee is required pursuant to Rule 457(i).

(6)   No separate consideration will be received for the Subsidiary Guarantees.
      Pursuant to Rule 457(n) of the Securities Act of 1933 there is no filing
      fee with respect to the Subsidiary Guarantees.

                               ---------------

     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE
ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(A), MAY DETERMINE.

                                ---------------



                         TABLE OF ADDITIONAL REGISTRANTS



                                                STATE OR OTHER                            ADDRESS, INCLUDING ZIP CODE,
                                                JURISDICTION OF        IRS EMPLOYER      AND TELEPHONE NUMBER, INCLUDING
EXACT NAME OF REGISTRANT                       INCORPORATION OR       IDENTIFICATION       AREA CODE, OF REGISTRANT'S
AS SPECIFIED IN ITS CHARTER                      ORGANIZATION             NUMBER           PRINCIPAL EXECUTIVE OFFICES
---------------------------                    ----------------       --------------     -------------------------------
                                                                                
L-3 Communications Corporation                     Delaware             13-3937436       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Coleman Research Corporation                       Florida              59-2039476       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
EER Systems, Inc.                                  Virginia             54-1349668       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Electrodynamics, Inc                               Arizona              36-3140903       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Henschel, Inc.                                     Delaware             23-2554418       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Hygienetics Environmental Services, Inc.           Delaware             13-3992505       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Interstate Electronics Corporation                 California           95-1912832       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
L-3 Communications Aydin Corporation               Delaware             23-1686808       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
L-3 Communications DBS Microwave, Inc.             California           68-0281617       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
L-3 Communications ESSCO, Inc.                     Delaware             04-2281486       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
L-3 Communications ILEX Systems, Inc.              Delaware             13-3992952       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
L-3 Communications SPD Technologies, Inc.          Delaware             23-2869511       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
L-3 Communications Storm Control Systems, Inc.     California           77-0268547       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
KDI Precision Products, Inc.                       Delaware             31-0740721       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Microdyne Corporation                              Maryland             52-0856493       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
MPRI, Inc.                                         Delaware             54-1439937       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Pac Ord, Inc.                                      Delaware             23-2523436       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Power Paragon, Inc.                                Delaware             33-0638510       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
Southern California Microwave, Inc.                California           13-0478540       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
SPD Holdings, Inc.                                 Delaware             23-2977238       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
SPD Electrical Systems, Inc.                       Delaware             23-2457758       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111
SPD Switchgear, Inc.                               Delaware             23-2510039       600 Third Avenue
                                                                                         New York, NY 10016
                                                                                         (212) 697-1111





THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN
OFFER TO SELL THESE SECURITIES AND IS NOT SOLICITING AN OFFER TO BUY THESE
SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.

PROSPECTUS
                 Subject to Completion Dated December 18, 2001

                                  $420,000,000

                                [GRAPHIC OMITTED]

                                 COMMUNICATIONS

                       L-3 COMMUNICATIONS HOLDINGS, INC.
 4.00% SENIOR SUBORDINATED CONVERTIBLE CONTINGENT DEBT SECURITIES(SM)(CODES)(SM)
                                    DUE 2011
                      AND 3,902,439 SHARES OF COMMON STOCK
                      ISSUABLE UPON CONVERSION OF THE CODES

                                  GUARANTEED BY



                                          
L-3 Communications Corporation               L-3 Communications SPD Technologies, Inc.
Coleman Research Corporation                 L-3 Communications Storm Control Systems, Inc.
EER Systems, Inc.                            KDI Precision Products, Inc.
Electrodynamics, Inc.                        Microdyne Corporation
Henschel, Inc.                               MPRI, Inc.
Hygienetics Environmental Services, Inc.     Pac Ord, Inc.
Interstate Electronics Corporation           Power Paragon, Inc.
L-3 Communications Aydin Corporation         Southern California Microwave, Inc.
L-3 Communications DBS Microwave, Inc.       SPD Holdings, Inc.
L-3 Communications ESSCO, Inc.               SPD Electrical Systems, Inc.
L-3 Communications ILEX Systems, Inc.        SPD Switchgear, Inc.


--------------------------------------------------------------------------------
This prospectus relates to:

-- $420,000,000 in aggregate principal amount of 4.00% Senior Subordinated
   Convertible Contingent Debt Securities(SM) (CODES)(SM) due 2011;

-- The shares of our common stock issuable upon conversion of the CODES; and

-- The subsidiary guarantees of the CODES on behalf of each of our subsidiary
   guarantors.

The CODES, the shares of our common stock and the subsidiary guarantees are
offered for resale in this prospectus for the accounts of their holders at
market prices prevailing at the time of sale or at privately negotiated prices.
The holders may sell the CODES or the shares of our common stock obtained
through conversion of the CODES directly to purchasers or through underwriters,
broker-dealers or agents, who may receive compensation in the form of
discounts, concessions or commissions.

The CODES are convertible, at your option, into shares of our common stock
initially at a conversion rate of 9.2915 shares of common stock per $1,000
principal amount, which is equivalent to an initial conversion price of
$107.625 per share, subject to adjustments described elsewhere in this
prospectus, in the following circumstances:

   o if the sale price of our common stock is above 120% of the conversion
     price measured over a specified number of trading days;

   o if the ratio of the trading price of the CODES to the conversion value of
     the CODES is below 105% measured over a specified number of trading days;

   o during any period in which the credit ratings assigned to the CODES by
     Moody's Investors Service, Inc. is below "B3" or by Standard & Poor's
     Rating Services is below "B-", or in which the credit rating assigned to
     the CODES is suspended or withdrawn by either rating agency or in which
     neither agency continues to rate the CODES or provide ratings services or
     coverage to us;

   o if the CODES have been called for redemption; and

   o upon the occurrence of specified corporate transactions.

The CODES bear interest at a rate of 4.00% per year. We will also pay contingent
interest during any six-month period following a six-month period in which the
average trading price of the CODES is above specified levels. Interest on the
CODES is payable on March 15 and September 15 of each year, beginning on March
15, 2002. The CODES will mature on September 15, 2011.

The CODES are unsecured senior subordinated obligations of L-3 Holdings,
and the guarantees are unsecured senior subordinated obligations of the
guarantors. As of September 30, 2001 we had $905.0 million of indebtedness
outstanding, none of which was senior debt.

The CODES are subject to special United States federal income tax rules.
For a discussion of the special tax regulations governing contingent payment
debt instruments, see "Certain United States Federal Income Tax
Considerations."

We may redeem some or all of the CODES on or after October 24, 2004 at the
redemption prices set forth in this prospectus under "Description of the CODES
-- Optional Redemption by L-3 Holdings."

You may require us to purchase all or a portion of your CODES upon a change of
control event.

Shares of our common stock are quoted on the New York Stock Exchange under the
symbol "LLL." The last reported sale price of the shares on December 17, 2001
was $88.30 per share.

      INVESTING IN THE CODES INVOLVES RISKS. RISK FACTORS BEGIN ON PAGE 8.

The proceeds from the sale of the securities offered by this prospectus are
solely for the security holders who own and are selling the securities. We will
not receive any of the proceeds from the sale of these securities.

                                ---------------

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF
THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.

--------------------------------------------------------------------------------
"Convertible Contingent Debt Securities" and "CODES" are service marks of
Lehman Brothers Inc.



                               TABLE OF CONTENTS



                                                  PAGE
                                                  ----
                                              
Prospectus Summary .........................        1
Risk Factors ...............................        8
Use of Proceeds ............................       18
Dividend Policy ............................       18
Selling Security Holders ...................       18
Price Range of Common Stock ................       20
Capitalization .............................       21
Description of Other Indebtedness ..........       22
Description of the CODES ...................       30
Description of Capital Stock ...............       53
Certain United States Federal Income Tax
   Considerations ..........................       56
Plan of Distribution .......................       62
Legal Matters ..............................       63
Experts ....................................       63
Available Information ......................       64
Incorporation of Certain Documents by
   Reference ...............................       65



                                       i



                           FORWARD-LOOKING STATEMENTS

     Our disclosure and analysis in this prospectus contain some
forward-looking statements. Certain of the matters discussed concerning our
operations, cash flows, financial position, economic performance and financial
condition, including, in particular, the likelihood of our success in
developing and expanding our business and the realization of sales from backlog
include forward-looking statements within the meaning of Section 27A of the
Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934.

     Statements that are predictive in nature, that depend upon or refer to
future events or conditions or that include words such as "expects,"
"anticipates," "intends," "plans," "believes," "estimates" and similar
expressions are forward-looking statements. Although we believe that these
statements are based upon reasonable assumptions, including projections of
orders, sales, operating margins, earnings, cash flow, research and development
costs, working capital, capital expenditures and other projections, they are
subject to several risks and uncertainties, and therefore, we can give no
assurance that these statements will be achieved.

     Our forward-looking statements will also be influenced by factors such as:

     o our dependence on the defense industry and the business risks peculiar to
       that industry, including changing priorities or reductions in the U.S.
       Government defense budget;

     o our reliance on contracts with a limited number of agencies of, or
       contractors to, the U.S. Government and the possibility of termination of
       government contracts by unilateral government action or for failure to
       perform;

     o our ability to obtain future government contracts on a timely basis;

     o the availability of government funding and changes in customer
       requirements for our products and services;

     o our significant amount of debt and the restrictions contained in our debt
       agreements;

     o collective bargaining agreements and labor disputes;

     o economic conditions, competitive environment, international business and
       political conditions, timing of international awards and contracts;

     o our extensive use of fixed price contracts as compared to cost plus
       contracts;

     o our ability to identify future acquisition candidates or to integrate
       acquired operations;

     o the rapid change of technology in the communications equipment industry;

     o the high level of competition in the communications equipment industry;

     o our introduction of new products into commercial markets or our
       investments in commercial products or companies; and

     o pension, environmental or legal matters or proceedings and various other
       market, competition and industry factors, many of which are beyond our
       control.

     You are cautioned that our forward-looking statements are not guarantees
of future performance and the actual results or developments may differ
materially from the expectations expressed in the forward-looking statements.

     As for the forward-looking statements that relate to future financial
results and other projections, actual results will be different due to the
inherent uncertainty of estimates, forecasts and projections and may be better
or worse than projected. Given these uncertainties, you should not place any
reliance on these forward-looking statements. These forward-looking statements
also represent our estimates and assumptions only as of the date that they were
made. We expressly disclaim a duty to provide updates to these forward-looking
statements, and the estimates and assumptions associated with them, after the
date of this prospectus to reflect events or changes in circumstances or
changes in expectations or the occurrence of anticipated events.


                                       ii


     We undertake no obligation to publicly update any forward-looking
statement, whether as a result of new information, future events or otherwise.
You are advised, however, to consult any additional disclosures we make in our
Form 10-K, Form 10-Q and Form 8-K reports to the Securities and Exchange
Commission. Also note that we provide a cautionary discussion of risk and
uncertainties under the caption "Risk Factors" in this prospectus. These are
factors that we think could cause our actual results to differ materially from
expected results. Other factors besides those listed here could also adversely
affect us. This discussion is provided as permitted by the Private Securities
Litigation Reform Act of 1995.


                                      iii


                               PROSPECTUS SUMMARY

     This summary highlights selected information contained elsewhere in this
prospectus or incorporated by reference herein and does not contain all of the
information you need to consider in making your investment decision. You should
read carefully this entire prospectus, including information incorporated
herein by reference.

     "L-3 Holdings" refers to L-3 Communications Holdings, Inc., as issuer of
the CODES, and "L-3 Communications" refers to L-3 Communications Corporation, a
wholly-owned operating subsidiary of L-3 Holdings and one of the guarantors of
the CODES. "Guarantors" refers to certain direct and indirect domestic
subsidiaries of L-3 Holdings, including L-3 Communications, which will be
guaranteeing the obligations of L-3 Holdings under the CODES. The obligations
of the Guarantors are referred to herein as the "Guarantees." "L-3," "we," "us"
and "our" refer to L-3 Holdings and its subsidiaries, including L-3
Communications. "Predecessor Company" refers to the ten initial business units
we purchased from Lockheed Martin Corporation ("Lockheed Martin") in 1997.
Except for its outstanding 5 1/4% Convertible Senior Subordinated Notes due
2009, prior to the offering of the CODES, L-3 Holdings has no assets or
liabilities and conducts no operations other than through L-3 Communications.
L-3 Holdings has guaranteed the bank credit facilities of L-3 Communications.


                                  THE COMPANY

     We are a leading merchant supplier of sophisticated secure communication
systems and specialized communication products. We produce secure, high data
rate communication systems, training and simulation systems, avionics and ocean
products, telemetry, instrumentation and space products and microwave
components. These systems and products are critical elements of virtually all
major communication, command and control, intelligence gathering and space
systems. Our systems and specialized products are used to connect a variety of
airborne, space, ground and sea-based communication systems and are used in the
transmission, processing, recording, monitoring and dissemination functions of
these communication systems. Our customers include the U.S. Department of
Defense ("DoD"), certain U.S. Government intelligence agencies, major aerospace
and defense contractors, foreign governments, commercial customers and certain
other U.S. agencies. For the nine months ended September 30, 2001, direct and
indirect sales to the DoD provided 64.1% of our sales, and sales to commercial
and other customers provided 35.9% of our sales.

     We are incorporated in Delaware, and the address of our principal
executive offices is 600 Third Avenue, New York, New York 10016. Our telephone
number is (212) 697-1111.


                                       1


                                  THE OFFERING

Issuer......................   L-3 Communications Holdings, Inc.

Securities Offered..........   $350,000,000 in aggregate principal amount of
                               4.00% Senior Subordinated Convertible Contingent
                               Debt Securities (CODES) due 2011 (the "CODES")
                               issued to the initial purchasers in an offering
                               on October 24, 2001 (the "Initial Offering") and
                               $70,000,000 aggregate principal amount of CODES
                               issued upon the initial purchasers' exercise of
                               their option to purchase additional CODES on
                               November 5, 2001. The initial purchasers resold
                               the CODES pursuant to Rule 144A under the
                               Securities Act of 1933.

Offering Price..............   Each CODES was issued at a price of 100% of its
                               principal amount plus accrued interest, if any,
                               from October 24, 2001.

Maturity....................   September 15, 2011 unless earlier redeemed,
                               repurchased or converted.

Interest Payment Dates......   March 15 and September 15, beginning March 15,
                               2002. The initial interest payment will include
                               accrued interest from October 24, 2001.

Interest Rate...............   4.00% per year, subject to adjustment under
                               certain circumstances. See "Description of the
                               CODES -- Interest Rate Adjustments."

Contingent Interest.........   We will pay contingent interest to the holders
                               of the CODES during any six-month period from
                               March 15 to September 14 and from September 15 to
                               March 14, commencing on March 15, 2002, if the
                               average trading price of a CODES for the five
                               trading days ending on the second trading day
                               immediately preceding the relevant six-month
                               period equals 120% or more of the principal
                               amount of the CODES.

                               The rate of contingent interest payable with
                               respect to any six-month period will equal the
                               greater of (i) a per annum rate equal to 5.0% of
                               our estimated per annum borrowing rate for
                               senior subordinated non-convertible fixed-rate
                               indebtedness with a maturity date comparable to
                               the CODES and (ii) 0.40% per annum, but in no
                               event will the rate of contingent interest
                               exceed a per annum rate of 0.50%, in each case
                               based on the outstanding principal amount of the
                               CODES. Contingent interest will be computed on
                               the basis of a 360-day year comprised of twelve
                               30-day months.

Ranking.....................   The CODES are unsecured senior subordinated
                               obligations of L-3 Holdings. The CODES rank
                               junior in right of payment to all of the existing
                               and future senior debt of L-3 Holdings. As of
                               September 30, 2001, L-3 Holdings had no senior
                               debt outstanding and its only obligations were
                               its guarantees of L-3 Communciations' bank credit
                               facilities and its 5 1/4% Convertible Senior
                               Subordinated Notes due 2009. In addition,


                                       2


                               as of September 30, 2001 L-3 Communications had
                               the ability to borrow up to $499.5 million,
                               after reductions for outstanding letters of
                               credit of $100.5 million, under its bank credit
                               facilities, which if borrowed would be senior
                               debt. See "Description of the CODES --
                               Subordination."

Guarantees..................   The CODES are jointly and severally guaranteed
                               on a senior subordinated basis by certain
                               domestic subsidiaries of L-3 Holdings as
                               described in the "Description of the
                               CODES--Subsidiary Gurantees."

                               The Guarantees are subordinated in right of
                               payment to all exisiting and future senior debt
                               of the Guarantors. The Guarantees are pari passu
                               with other senior subordinated indebtedness of
                               the Guarantors, including (1) the 10 3/8% Senior
                               Subordinated Notes due 2007, the 8 1/2% Senior
                               Subordinated Notes due 2008 and the 8% Senior
                               Subordinated Notes due 2008, in each case issued
                               by L-3 Communications and guaranteed by the
                               other Guarantors and (2) the 5 1/4% Convertible
                               Senior Subordinated Notes due 2009 issued by L-3
                               Holdings and guaranteed by L-3 Communications
                               and the other Guarantors. Information regarding
                               the Guarantors are included in the notes to the
                               financial statements incorporated by reference
                               herein.

                               As of September 30, 2001, we had $905.0 million
                               of indebtedness outstanding, none of which was
                               senior debt. In addition, as of September 30,
                               2001 L-3 Communications had the ability to
                               borrow up to $499.5 million of senior debt,
                               after reductions for outstanding letters of
                               credit of $100.5 million, under its bank credit
                               facilities, which if borrowed would be senior
                               debt.

                               See "Description of the CODES -- Subsidiary
                               Guarantees" and "-- Subordination of Subsidiary
                               Guarantees."

Optional Conversion by
Holders.....................   You may convert your CODES prior to stated
                               maturity under any of the following
                               circumstances:

                               o during any quarterly conversion period if the
                                 closing sale price of our common stock for a
                                 period of at least 20 trading days in the
                                 period of 30 consecutive days ending on the
                                 first day of such conversion period is more
                                 than 120% of the conversion price on that
                                 thirtieth day;

                               o during the five business day period following
                                 any 10 consecutive trading-day period in which
                                 the average of the trading prices (as defined
                                 in this prospectus) for the CODES was less than
                                 105% of the average sale prices (as defined in
                                 this prospectus) of our common stock multiplied
                                 by the number of shares into which such CODES
                                 are then convertible;

                               o during any period in which the credit rating
                                 assigned to the CODES by either Moody's
                                 Investors Service, Inc., or Moody's, or
                                 Standard & Poor's Rating Services, or


                                       3


                                 Standard & Poor's, is below B3 and B-,
                                 respectively, or in which the credit rating
                                 assigned to the CODES is suspended or
                                 withdrawn by either rating agency or in which
                                 neither rating agency continues to rate the
                                 CODES or provide ratings services or coverage
                                 to us;

                               o if the CODES have been called for redemption;
                                 or

                               o upon the occurrence of specified corporate
                                 transactions described under "Description of
                                 the CODES -- Conversion Rights."

                               For each CODES surrendered for conversion, you
                               initially will receive 9.2915 shares of our
                               common stock. This represents an initial
                               conversion price of $107.625 per share of common
                               stock. The conversion rate and the conversion
                               price may be adjusted for certain reasons, but
                               will not be adjusted for accrued interest, if
                               any, or contingent interest, if any. Upon
                               conversion, you will not receive any cash
                               payment representing interest accrued since the
                               last interest payment date, provided, however,
                               that you will be entitled to interest accrued
                               for the period beginning September 15, 2004
                               through October 23, 2004 if you convert
                               subsequent to October 23, 2004. Instead, such
                               interest will be deemed paid by the common stock
                               issued to you on conversion. CODES called for
                               redemption may be surrendered for conversion
                               until the close of business one business day
                               prior to the redemption date. See "Description
                               of the CODES -- Conversion Rights."

Sinking Fund................   None.

Optional Redemption by L-3
Holdings....................   L-3 Holdings may not redeem the CODES prior to
                               October 24, 2004. L-3 Holdings may redeem some or
                               all of the CODES on or after October 24, 2004, at
                               the redemption prices, plus accrued and unpaid
                               interest, including contingent interest, to, but
                               excluding, the redemption date, set forth under
                               "Description of the CODES -- Optional Redemption
                               by L-3 Holdings." L-3 Holdings will therefore be
                               required to make at least three full years of
                               interest payments before being able to redeem any
                               of the CODES.

Repurchase Right of
Holders.....................   Each holder of the CODES may require L-3 Holdings
                               to repurchase all of the holder's CODES at 100%
                               of their principal amount plus accrued and unpaid
                               interest, including contingent interest, in
                               certain circumstances involving a change of
                               control. The repurchase price is payable in:

                               o cash; or

                               o at our option, subject to the satisfaction of
                                 certain conditions, in common stock. The number
                                 of shares of common stock will equal the
                                 repurchase price divided by 95% of the average
                                 closing sale price for the five consecutive
                                 trading days ending on and including the third
                                 trading day prior to the repurchase date.


                                       4


                               See "Description of the CODES -- Repurchase at
                               Option of Holders -- Change of Control."

Form, Denomination and
Registration................   The CODES are issued in fully registered form.
                               The CODES will be issued in denominations of
                               $1,000.

                               Except as described in this prospectus, the
                               CODES are issued in fully registered book-entry
                               form and are represented by one or more global
                               CODES deposited with the trustee as custodian
                               for DTC (The Depository Trust Company) and
                               registered in the name of Cede & Co., DTC's
                               nominee. Beneficial interests in the global
                               CODES are shown on, and any transfers will be
                               effected only through, records maintained by DTC
                               and its participants.

                               See "Description of the CODES -- Form,
                               Denomination and Registration."

Use of Proceeds.............   We will not receive any of the proceeds from
                               this offering. See "Use of Proceeds."

Registration Rights.........   We have filed with the SEC a registration
                               statement, of which this prospectus forms a part,
                               for the resale of the CODES, the Guarantees and
                               the common stock issuable upon conversion. We
                               have agreed to keep the registration statement
                               effective until the earliest of two years after
                               the latest date on which we issue CODES in this
                               offering, expiration of the resale restriction
                               provisions of Rule 144 under the Securities Act
                               or the date when all of the CODES, Guarantees and
                               common stock into which the CODES are convertible
                               are registered under the registration statement
                               and sold in accordance with it. If we do not
                               comply with these and other registration
                               obligations, we will be required to pay
                               additional amounts to the holders of the CODES or
                               the common stock issuable upon conversion. See
                               "Description of the CODES -- Registration
                               Rights."

Absence of a Public Market
for the CODES ..............   The CODES are a new issue of securities. We do
                               not intend to list the CODES on any national
                               market or exchange. Although the initial
                               purchasers of the CODES have advised us that they
                               currently intend to make a market into the CODES,
                               they are not obligated to do so. Therefore, we
                               cannot assure you of the liquidity of the trading
                               market for the CODES. See "Plan of Distribution."

NYSE Symbol for our Common
Stock.......................   Our common stock is traded on the New York
                               Stock Exchange under the symbol "LLL."

Taxation....................   The CODES and the common stock issuable upon
                               conversion of the CODES are subject to special
                               and complex United States federal income tax
                               rules. Holders are urged to consult their own tax
                               advisors with respect to the federal, state,
                               local


                                       5


                               and foreign tax consequences of purchasing,
                               owning and disposing of the CODES and common
                               stock issuable upon conversion of the CODES. See
                               "Risk Factors -- You should consider the
                               negative United States federal income tax
                               consequences of owning CODES" and "Certain
                               United States Federal Income Tax
                               Considerations."










                                       6


                      RATIO OF EARNINGS TO FIXED CHARGES

     The ratio of earnings to fixed charges and deficiency of earnings to cover
fixed charges presented below should be read together with the financial
statements and the notes accompanying them and "Management's Discussion and
Analysis of Financial Condition and Results of Operations" found in our Annual
Report on Form 10-K for the year ended December 31, 2000 and Quarterly Report
on Form 10-Q for the quarter ended September 30, 2001, incorporated into this
prospectus by reference. In calculating the ratio of earnings to fixed charges,
earnings consist of income (loss) before income taxes plus fixed charges. Fixed
charges consist of interest on indebtedness plus the amortization of deferred
debt issuance costs and that portion of lease rental expense representative of
the interest element.



                                                           L-3                                   PREDECESSOR COMPANY
                             ---------------------------------------------------------------- --------------------------
                                                                                    NINE         THREE
                              NINE MONTHS ENDED           YEAR ENDED               MONTHS        MONTHS
                                SEPTEMBER 30,            DECEMBER 31,               ENDED        ENDED      YEAR ENDED
                             ------------------- -----------------------------  DECEMBER 31,   MARCH 31,   DECEMBER 31,
                              2001(1)   2000(1)   2000(1)   1999(1)   1998(1)      1997(2)        1997       1996(3)
                             --------- --------- --------- --------- --------- -------------- ----------- -------------
                                                                                  
Ratio of Earnings to Fixed
  Charges:                      2.5x      2.2x      2.3x      2.4x      2.1x        1.7x           -- (4)      1.7x


----------

  (1)   Our results of operations are impacted significantly by our
        acquisitions, which are described in this prospectus or in documents
        incorporated herein by reference.

  (2)   Reflects the acquisition of our predecessor company and the
        commencement of our operations effective April 1, 1997.

  (3)   Reflects our predecessor company's ownership of nine business units
        acquired by Lockheed Martin Corporation from Loral Corporation
        effective April 1, 1996. Prior to April 1, 1996, the predecessor
        company had only one business unit.

  (4)   Earnings were insufficient to cover fixed charges by $0.5 million for
        the three months ended March 31, 1997.



                                       7


                                  RISK FACTORS

     You should carefully consider the following factors and other information
contained or incorporated by reference in this prospectus before deciding to
invest in the CODES or the shares of our common stock issuable upon conversion
of the CODES. Any of these risks could materially adversely affect our
business, financial condition, results of operations and cash flow, which could
in turn materially adversely affect the price of the CODES and the common stock
issuable upon conversion of the CODES.


RISKS RELATED TO L-3


OUR SIGNIFICANT LEVEL OF DEBT MAY ADVERSELY AFFECT OUR FINANCIAL AND OPERATING
ACTIVITY.

     We have incurred substantial indebtedness to finance our acquisitions. As
of September 30, 2001, we had $905.0 million of indebtedness outstanding,
excluding outstanding letters of credit. In addition, available borrowings
under our bank credit facilities after reductions for outstanding letters of
credit were $499.5 million as of September 30, 2001. Our ratio of earnings to
fixed charges, adjusted on a pro forma basis to give effect to this offering,
for the nine months ended September 30, 2001 would have been 2.4 to 1.0. In the
future we may borrow more money, subject to limitations imposed on us by our
debt agreements.

     Based on our current level of operations and anticipated improvements to
our operations, we believe that our cash flow from operations and amounts we
are able to borrow under our senior credit facilities will be adequate to meet
our anticipated requirements for working capital, capital expenditures,
research and development expenditures, program and other discretionary
investments, interest payments and scheduled principal payments for the
foreseeable future, at least for the next three years. Our ability to make
scheduled payments of principal and interest on our indebtedness and to
refinance our indebtedness depends on our future performance. We do not have
complete control over our future performance because it is subject to economic,
political, financial, competitive, regulatory and other factors affecting the
aerospace and defense industry. It is possible that in the future our business
may not generate sufficient cash flow from operations to allow us to service
our debt and make necessary capital expenditures. If this situation occurs, we
may have to sell assets, restructure debt or obtain additional equity capital.
We cannot be sure that we would be able to do so or do so without additional
expense.

     Our level of indebtedness has important consequences to you and your
investment in the CODES and, upon conversion, in our common stock. These
consequences may include:

     o requiring a substantial portion of our cash flow from operations to be
       used to pay interest and principal on our debt and therefore be
       unavailable for other purposes including capital expenditures, research
       and development and other investments;

     o limiting our ability to obtain additional financing for acquisitions or
       working capital to make investments or other expenditures, which may
       limit our ability to carry out our acquisition strategy;

     o higher interest expenses due to increases in interest rates on our
       borrowings that have variable interest rates;

     o heightening our vulnerability to downturns in our business or in the
       general economy and restricting us from making acquisitions, introducing
       new technologies and products or exploiting business opportunities; and

     o covenants that limit our ability to borrow additional funds, dispose of
       assets or pay cash dividends. Failure to comply with such covenants could
       result in an event of default which, if not cured or waived, could have a
       material adverse effect on our financial position and results of
       operations due to financial and restrictive covenants.


                                       8


OUR ACQUISITION STRATEGY INVOLVES RISKS, AND WE MAY NOT SUCCESSFULLY IMPLEMENT
OUR STRATEGY.

     We seek to acquire companies that complement our business. We cannot
assure you, however, that we will be able to identify acquisition candidates on
commercially reasonable terms or at all. If we make additional acquisitions, we
also cannot be sure that any benefits anticipated from the acquisitions will
actually be realized. Likewise, we cannot be sure that we will be able to
obtain additional financing for acquisitions. Such additional financing could
be restricted by the terms of our debt agreements.

     The process of integrating acquired operations, including our recent
acquisitions, into our existing operations may result in unforeseen operating
difficulties and may require significant financial and managerial resources
that would otherwise be available for the ongoing development or expansion of
our existing operations. Possible future acquisitions could result in the
incurrence of additional debt and related interest expense, contingent
liabilities and amortization expenses related to certain purchased intangible
assets, all of which could have a materially adverse effect on our financial
condition, operating results and cash flow. We consider and execute strategic
acquisitions on an ongoing basis and may be evaluating acquisitions or engaged
in acquisition negotiations at any given time. We regularly evaluate potential
acquisitions and joint venture transactions, but we have not entered into any
agreements with respect to any material transactions.


WE RELY ON SALES TO U.S. GOVERNMENT ENTITIES, AND THE LOSS OF SUCH CONTRACTS
WOULD HAVE A MATERIAL IMPACT ON OUR OPERATING RESULTS.

     Our government sales are predominantly derived from contracts with
agencies of, and prime contractors to, the U.S. Government. Approximately
69.2%, or $1,134.9 million, of our sales for the nine months ended September
30, 2001 and 67.9%, or $1,296.1 million, of our sales for the year ended
December 31, 2000, were made directly or indirectly to agencies of the U.S.
Government, including the DoD. At December 31, 2000, the number of contracts
with a value exceeding $1.0 million was approximately 600. Our largest program
is a long-term, cost plus contract for the U.S. Air Force aerial reconnaissance
program that provided 3.8% of our sales for the year ended December 31, 2000.
No other program provided more than 2.3% of our sales for the year ended
December 31, 2000. The loss of all or a substantial portion of our sales to the
U.S. Government would have a material adverse effect on our financial
condition, results of operations and cash flow.


OUR GOVERNMENT CONTRACTS ENTAIL CERTAIN RISKS.

     o Government contracts are dependent upon the U.S. defense budget.

     The reduction in the U.S. defense budget in the early 1990s caused most
defense-related government contractors to experience decreased sales, increased
downward pressure on operating margins and, in certain cases, net losses. Our
predecessor company experienced a substantial decline in sales during that
period. A significant decline in U.S. military expenditures in the future could
materially adversely affect our sales, earnings and cash flow. The loss or
significant reduction in government funding of a large program in which we
participate could also materially adversely affect our future sales, earnings
and cash flows and thus our ability to meet our financial obligations. U.S.
Government contracts are also conditioned upon the continuing approval by
Congress of the amount of necessary spending. Congress usually appropriates
funds for a given program each fiscal year even though contract periods of
performance may exceed one year. Consequently, at the beginning of a major
program, the contract is usually partially funded, and additional monies are
normally committed to the contract only if appropriations are made by Congress
for future fiscal years.

     o Government contracts contain unfavorable termination provisions and are
       subject to audit and modification.

     Companies engaged primarily in supplying defense-related equipment and
services to U.S. Government agencies are subject to certain business risks
peculiar to the defense industry. These risks include the ability of the U.S.
Government to unilaterally:


                                       9


     o suspend us from receiving new contracts pending resolution of alleged
       violations of procurement laws or regulations;

     o terminate existing contracts;

     o reduce the value of existing contracts;

     o audit our contract-related costs and fees, including allocated indirect
       costs; and

     o control and potentially prohibit the export of our products.

     All of our U.S. Government contracts can be terminated by the U.S.
Government either for its convenience or if we default by failing to perform
under the contract. Termination for convenience provisions provide only for our
recovery of costs incurred or committed, settlement expenses and profit on the
work completed prior to termination. Termination for default provisions provide
for the contractor to be liable for excess costs incurred by the U.S.
Government in procuring undelivered items from another source. Our contracts
with foreign governments generally contain similar provisions relating to
termination at the convenience of the customer.

     The U.S. Government may review our costs and performance on their
contracts, as well as our accounting and general business practices. Based on
the results of such audits, the U.S. Government may adjust our contract-related
costs and fees, including allocated indirect costs. In addition, under U.S.
Government purchasing regulations, some of our costs, including most financing
costs, amortization of goodwill, portions of research and development costs,
and certain marketing expenses may not be reimbursable under U.S. Government
contracts. Further, as a U.S. Government contractor, we are subject to
investigation, legal action and/or liability that would not apply to a
commercial company.

     o Government contracts are subject to competitive bidding and we are
       required to obtain licenses for non-U.S. sales.

     We obtain many of our U.S. Government contracts through a competitive
bidding process. We cannot assure you that we will continue to win
competitively awarded contracts or that awarded contracts will generate sales
sufficient to result in our profitability. We are also subject to risks
associated with the following:

     o the frequent need to bid on programs in advance of the completion of
       their design, which may result in unforeseen technological difficulties
       and/or cost overruns;

     o the substantial time and effort including the relatively unproductive
       design and development required to prepare bids and proposals for
       competitively awarded contracts which may not be awarded to us;

     o design complexity and rapid technological obsolescence; and

     o the constant need for design improvement.

     In addition to these U.S. Government contract risks, we are required to
obtain licenses from U.S. Government agencies to export many of our products
and systems. Additionally, we are not permitted to export some of our products.
We cannot be sure of our ability to gain any licenses required to export our
products, and failure to receive required licenses would eliminate our ability
to sell our products outside the United States.


OUR FIXED PRICE AND COST PLUS CONTRACTS MAY COMMIT US TO UNFAVORABLE TERMS.

     We provide our products and services primarily through fixed price or cost
plus contracts. Fixed price contracts provided 63.5% of our sales for the nine
months ended September 30, 2001. In a fixed price contract, the price is not
subject to adjustment based on cost incurred to perform the required work under
the contract. Therefore, we fully absorb cost overruns on fixed price contracts
and this reduces our profit margin on the contract. Those cost overruns may
result in a loss. A further risk associated with fixed price contracts is the
difficulty of estimating sales and costs that are related to


                                       10


performance in accordance with contract specifications and the possibility of
obsolescence in connection with long-term procurements. Failure to anticipate
technical problems, estimate costs accurately or control costs during
performance of a fixed price contract may reduce our profitability or cause a
loss.

     Cost plus contracts provided 36.5% of our sales for the nine months ended
September 30, 2001. In a cost plus contract, we are reimbursed for allowable
incurred costs plus a fee, which may be fixed or variable depending on the
contract arrangement. The price on a cost plus contract is based on allowable
cost incurred, but generally is subject to contract funding limitations. U.S.
Government regulations require that we notify our customer of any cost overruns
or underruns on a cost plus contract. If we incur costs in excess of the
funding limitation specified in the contract, we may not be able to recover
those cost overruns.

     We record sales and profits on substantially all of our contracts using
percentage-of-completion methods of accounting. As a result, revisions made to
our estimates of sales and profits are recorded in the period in which the
conditions that require such revisions become known and can be estimated.
Although we believe that adequate provisions for losses for our fixed price
contracts are recorded in our financial statements, as required under generally
accepted accounting principles in the United States, we cannot assure you that
our contract loss provisions, which are based on estimates, will be adequate to
cover all actual future losses.


OUR OPERATIONS INVOLVE RAPIDLY EVOLVING PRODUCTS AND TECHNOLOGICAL CHANGE.

     The rapid change of technology is a key feature of the communication
equipment industry as a whole, and for defense applications in particular. To
succeed in the future, we will need to continue to design, develop,
manufacture, assemble, test, market and support new products and enhancements
on a timely and cost-effective basis. Historically, our technology has been
developed through both customer-funded and internally funded research and
development. We cannot guarantee that we will continue to maintain comparable
levels of research and development. In the past we have allocated substantial
funds to capital expenditures, programs and other investments. This practice
will continue to be required in the future. Even so, we cannot assure you that
we will successfully identify new opportunities and continue to have the needed
financial resources to develop new products in a timely or cost-effective
manner. At the same time, products and technologies developed by others may
render our products and systems obsolete or non-competitive.


WE MAY NOT SUCCESSFULLY IMPLEMENT OUR PLAN TO EXPAND INTO COMMERCIAL MARKETS.

     Our revenues have primarily come from business with the DoD and other U.S.
Government agencies. In addition to continuing to pursue these market areas, we
will continue applying our technical capabilities and expertise to related
commercial markets. Some of our commercial products, such as local wireless
loop telecommunications equipment, airport security equipment and voyage
recorders, have only recently been introduced. As such, these new products are
subject to certain risks and may require us to:

     o develop and maintain marketing, sales and customer support capabilities;

     o secure sales and customer support capabilities;

     o obtain customer and/or regulatory certification;

     o respond to rapid technological advances; and

     o obtain customer acceptance of these products and product performance.

     Our efforts to expand our presence in commercial markets may require
significant resources, including additional working capital and capital
expenditures, as well as the use of our management's time. Our efforts to sell
certain commercial products, particularly our broadband wireless communications
products, may also depend to a significant degree on the efforts of independent
distributors or communication service providers. In addition, we have made
equity investments in


                                       11


entities that plan to commence operations as communications service providers
using some of our commercial products. We can give no assurance that these
distributors or service providers will be able to market our products or their
services successfully or that we will be able to realize a return on our
investment in them. We cannot assure you that we will be successful in
addressing these risks or in developing these commercial business
opportunities.


CONSOLIDATION AND INTENSE COMPETITION IN OUR INDUSTRY COULD LIMIT OUR ABILITY
TO ATTRACT AND RETAIN CUSTOMERS.

     The communications equipment industry as a whole, and the market for
defense applications in particular, is highly competitive. The defense industry
has experienced substantial consolidation due to declining defense budgets and
increasing pressures for cost reductions. We expect that the DoD's increased
use of commercial off-the-shelf products and components in military equipment
will continue to encourage new competitors to enter the market. We also expect
that competition for original equipment manufacturing business will increase
due to the continued emergence of merchant suppliers. Our ability to compete
for defense contracts largely depends on the following factors:

     o the effectiveness and innovations of our research and development
       programs;

     o our ability to offer better performance than our competitors at a lower
       cost to the U.S. Government; and

     o the readiness of our facilities, equipment and personnel to undertake the
       programs for which we compete.

     In some instances, the U.S. Government directs all work for a particular
project to a single supplier, commonly known as a sole-source project. In such
cases, other suppliers who may otherwise be able to compete for the programs
involved can only do so if the U.S. Government chooses to reopen the particular
program to competition. Additionally, many of our competitors are larger than
us and have substantially greater financial and other resources than we have.


OUR DEBT AGREEMENTS RESTRICT OUR ABILITY TO FINANCE OUR FUTURE OPERATIONS AND,
IF WE ARE UNABLE TO MEET OUR FINANCIAL RATIOS, COULD CAUSE OUR EXISTING DEBT TO
BE ACCELERATED.

     Our debt agreements contain a number of significant provisions that, among
other things, restrict our ability to:

     o sell assets;

     o incur more indebtedness;

     o repay certain indebtedness;

     o pay dividends;

     o make certain investments or acquisitions;

     o repurchase or redeem capital stock;

     o engage in mergers or consolidations; and

     o engage in certain transactions with subsidiaries and affiliates.

     These restrictions could hurt our ability to finance our future operations
or capital needs or engage in other business activities that may be in our
interest. In addition, some of our debt agreements also require us to maintain
compliance with certain financial ratios, including total consolidated earnings
before interest, taxes, depreciation and amortization to total consolidated
cash interest expense and net debt to total consolidated earnings before
interest, taxes, depreciation and amortization, and to limit our capital
expenditures. Our ability to comply with these ratios and limits may be
affected by events beyond our control. A breach of any of these agreements or
our inability to comply with the required financial ratios or limits could
result in a default under those debt agreements. In the event of any such
default, the lenders under those debt agreements could elect to:


                                       12


     o declare all outstanding debt, accrued interest and fees to be due and
       immediately payable;

     o require us to apply all of our available cash to repay our outstanding
       senior debt; and

     o prevent us from making debt service payments on our other debt.

     If we were unable to repay any of these borrowings when due, the lenders
under our senior credit facilities could proceed against their collateral,
which consists of a first priority security interest in the capital stock of
our material subsidiaries, including L-3 Communications. If the indebtedness
under the existing debt agreements were to be accelerated, we cannot assure you
that our assets would be sufficient to repay such indebtedness in full.


IF WE ARE UNABLE TO ATTRACT AND RETAIN KEY MANAGEMENT AND PERSONNEL, WE MAY
BECOME UNABLE TO OPERATE OUR BUSINESS EFFECTIVELY.

     Our future success depends to a significant degree upon the continued
contributions of our management, including Messrs. Lanza and LaPenta, and our
ability to attract and retain other highly qualified management and technical
personnel. We do not maintain any key person life insurance policies for
members of our management. As of September 30, 2001, Messrs. Lanza and LaPenta
owned, in the aggregate, 12.1% of our outstanding common stock. We have entered
into employment agreements with Messrs. Lanza and LaPenta. We face competition
for management and technical personnel from other companies and organizations.
Failure to attract and retain such personnel would damage our prospects.


ENVIRONMENTAL LAWS AND REGULATION MAY SUBJECT US TO SIGNIFICANT LIABILITY.

     Our operations are subject to various U.S. federal, state and local as
well as certain foreign environmental laws and regulations within the countries
in which we operate relating to the discharge, storage, treatment, handling,
disposal and remediation of certain materials, substances and wastes used in
our operations.

     New laws and regulations, stricter enforcement of existing laws and
regulations, the discovery of previously unknown contamination or the
imposition of new clean-up requirements may require us to incur costs in the
future that could have a negative effect on our financial condition, results of
operations or cash flow.


TERMINATION OF OUR BACKLOG OF ORDERS COULD NEGATIVELY IMPACT OUR SALES.

     We currently have a backlog of orders, primarily under contracts with the
U.S. Government. The U.S. Government may unilaterally modify or terminate these
contracts. Accordingly, most of our backlog could be modified or terminated by
the U.S. Government. We cannot assure you that our existing backlog will result
in sales. Further, we cannot be sure that the margin we record on sales from
any contract included in backlog will be profitable.


OUR PENSION PLAN LIABILITIES MAY RESULT IN SIGNIFICANT EXPENSES.

     We have assumed certain liabilities relating to defined benefit pension
plans for present and former employees and retirees of certain businesses which
we acquired. Prior to our formation, Lockheed Martin received a letter from the
Pension Benefit Guaranty Corporation (the "PBGC") which requested information
regarding the transfer of these pension plans and indicated that the PBGC
believed certain of these pension plans were underfunded using its actuarial
assumptions. These assumptions resulted in a larger liability for accrued
benefits than the assumptions used for financial reporting under Statement of
Financial Accounting Standards No. 87.

     With respect to these plans, Lockheed Martin entered into an agreement
with us and the PBGC dated as of April 30, 1997. Under that agreement, Lockheed
Martin agreed, upon the occurrence of certain circumstances, either to:

     o assume sponsorship of the subject plans; or



                                       13


     o provide another form of financial support.

     If Lockheed Martin did assume sponsorship of these plans, it would be
primarily liable for the costs associated with funding these plans or any costs
associated with the termination of them, but we would be required to reimburse
Lockheed Martin for its obligations. To date, the impact on our pension expense
and funding requirements resulting from this arrangement has not been material
to our results of operations, financial position or cash flow. However, should
Lockheed Martin assume sponsorship of the subject plans, or if these plans were
terminated, the impact of any increased pension expenses or funding
requirements could be material to us.


RISKS RELATED TO THE CODES AND THE COMMON STOCK INTO WHICH THE CODES ARE
CONVERTIBLE


YOU SHOULD CONSIDER THE NEGATIVE UNITED STATES FEDERAL INCOME TAX CONSEQUENCES
OF OWNING CODES.

     We and each holder agree in the indenture to treat the CODES as
"contingent payment debt instruments" subject to the contingent payment debt
regulations. As a result, a holder will be required to include amounts in
income, as original issue discount, in advance of cash such holder receives on
a CODES, and to accrue interest on a constant yield to maturity basis at a rate
comparable to the rate at which we would borrow in a noncontingent,
nonconvertible borrowing (8.0%), even though the CODES will have a
significantly lower yield to maturity. A holder will recognize taxable income
significantly in excess of cash received while the CODES are outstanding. In
addition, under the indenture, a holder will recognize ordinary income, if any,
upon a sale, exchange, conversion or redemption of the CODES at a gain. In
computing such gain, the amount realized by a holder will include, in the case
of a conversion, the amount of cash and the fair market value of shares
received. Holders are urged to consult their own tax advisors as to the United
States federal, state and other tax consequences of acquiring, owning and
disposing of the CODES and shares. See "Certain United States Federal Income
Tax Considerations."


WE CANNOT ASSURE YOU THAT AN ACTIVE TRADING MARKET WILL BE SUSTAINED FOR THE
CODES, WHICH MAY REDUCE THEIR MARKET PRICE.

     The CODES were originally issued on October 24, 2001 and November 5, 2001.
We do not intend to list the CODES on any national market or exchange. Although
the initial purchasers of the CODES have advised us that they currently intend
to make a market in the CODES, they are not obligated to do so. Therefore, we
cannot assure you of the liquidity of the trading market for the CODES.

     In addition, the liquidity of the trading market in the CODES and the
market price quoted for the CODES may be adversely affected by changes in the
overall market for convertible securities, changes in our prospects or
financial performance or in the prospects for companies in our industry
generally. If an active market for the CODES or the common stock of L-3
Holdings fails to be sustained, the trading price could fall. The CODES could
also trade at prices that may be lower than the initial offering price,
depending on many factors, including:

     o prevailing interest rates;

     o the markets for similar securities;

     o general economic conditions; and

     o our financial condition, historical financial performance and future
       prospects.


THE CODES ARE SUBORDINATED TO ALL OUR EXISTING AND FUTURE SENIOR INDEBTEDNESS,
WHICH MAY INHIBIT OUR ABILITY TO REPAY YOU.

     The CODES are contractually subordinated in right of payment to our
existing and future senior indebtedness. As of September 30, 2001, we had no
outstanding senior debt, but L-3 Communications, one of the Guarantors, as of
September 30, 2001, had the ability to borrow up to $499.5 million, after


                                       14


reductions for outstanding letters of credit of $100.5 million, under its bank
credit facilities, which if borrowed would be senior debt. The indenture does
not limit the creation of additional senior indebtedness or any other
indebtedness by us.

     Any incurrence of additional indebtedness may materially adversely impact
our ability to service our debt, including the CODES. Due to the subordination
provisions of our senior indebtedness, in the event of our insolvency, funds
that would otherwise be used to pay the holders of the CODES will be used to
pay the holders of senior indebtedness to the extent necessary to pay the
senior indebtedness in full. As a result of these payments, general creditors
may recover less, ratably, than the holders of senior indebtedness and the
general creditors may recover more, ratably, than the holders of the CODES or
other subordinated indebtedness. In addition, the holders of senior
indebtedness may, under certain circumstances, restrict or prohibit us from
making payments on the CODES.


OUR HOLDING COMPANY STRUCTURE MAY LIMIT YOUR RECOURSE TO OUR ASSETS.

     L-3 Holdings' right to receive the assets of any subsidiary upon the
liquidation or reorganization of that subsidiary, and the consequent rights of
the holders of the CODES to participate in those assets, will be subordinated
structurally to the claims of the subsidiary's creditors. However, if L-3
Holdings is recognized as a creditor, its claims would be subordinate to any
secured indebtedness of its subsidiary and any indebtedness of a subsidiary
that is senior to L-3 Holdings' claims. L-3 Holdings has no assets other than
the stock of its subsidiary, L-3 Communications. The capital stock of L-3
Communications and its material subsidiaries is pledged to secure our
obligations under L-3 Communications' senior credit facilities.


THE TERMS OF OUR INDEBTEDNESS COULD RESTRICT OUR FLEXIBILITY AND LIMIT OUR
ABILITY TO SATISFY OBLIGATIONS UNDER THE CODES.

     We are subject to operational and financial covenants and other
restrictions contained in the bank loan documents evidencing our senior
indebtedness and the indentures evidencing the senior subordinated notes of L-3
Communications. These covenants could limit our operational flexibility and
restrict our ability to borrow additional funds, if necessary, to finance
operations and to make principal and interest payments on the CODES.
Additionally, failure to comply with these operational and financial covenants
could result in an event of default under the terms of this indebtedness which,
if not cured or waived, could result in this indebtedness becoming due and
payable. The effect of these covenants, or our failure to comply with them,
could have a material adverse effect on our business, financial condition and
results of operations.


OUR ABILITY TO REPURCHASE CODES WITH CASH UPON A CHANGE OF CONTROL MAY BE
LIMITED.

     In certain circumstances involving a change of control of L-3 Holdings,
you may require us to repurchase some or all of your CODES. We cannot assure
you that we will have sufficient financial resources at such time or would be
able to arrange financing to pay the repurchase price of the CODES in cash. Our
ability to repurchase the CODES in such event may be limited by law, by our
indentures, by the terms of other agreements relating to our senior
indebtedness and by such indebtedness and agreements as may be entered into,
replaced, supplemented or amended from time to time. We may be required to
refinance our senior indebtedness in order to make such payments. We may not
have the financial ability to repurchase the CODES in cash if payment for our
senior indebtedness is accelerated.


THE GUARANTEES MAY BE UNENFORCEABLE DUE TO FRAUDULENT CONVEYANCE STATUTES,
ACCORDINGLY, YOU COULD HAVE NO CLAIM AGAINST THE GUARANTORS.

     Although laws differ among various jurisdictions, a court could, under
fraudulent conveyance laws, further subordinate or avoid the Guarantees if it
found that the Guarantees were incurred with actual intent to hinder, delay or
defraud creditors, or the Guarantor did not receive fair consideration or
reasonably equivalent value for the Guarantees and that the Guarantor was any
of the following:


                                       15


     o insolvent or rendered insolvent because of the Guarantees;

     o engaged in a business or transaction for which its remaining assets
       constituted unreasonably small capital; or

     o intended to incur, or believed that it would incur, debts beyond its
       ability to pay at maturity.

     If a court voided a guaranty by one or more of our subsidiaries as the
result of a fraudulent conveyance, or held it unenforceable for any other
reason, holders of the CODES would cease to have a claim against the subsidiary
based on the guaranty and would solely be creditors of L-3 Holdings and any
Guarantor whose Guarantee was not similarly held unenforceable.


NOT ALL OF THE SUBSIDIARIES OF L-3 HOLDINGS ARE GUARANTORS, AND YOUR CLAIMS
WILL BE SUBORDINATED TO ALL OF THE CREDITORS OF THE NON-GUARANTOR SUBSIDIARIES.

     Many, but not all, of the direct and indirect subsidiaries of L-3 Holdings
guarantee the CODES. In the event of a bankruptcy, liquidation or
reorganization of any of the non-guarantor subsidiaries, holders of their
indebtedness and their trade creditors will generally be entitled to payment of
their claims from the assets of those non-guarantor subsidiaries before any
assets of the non-guarantor subsidiaries are made available for distribution to
L-3 Holdings. Assuming this offering were completed on September 30, 2001 these
CODES would have been effectively junior to $43.5 million of indebtedness and
other liabilities, including trade payables, of these non-guarantor
subsidiaries. The non-guarantor subsidiaries generated 6.1% of our consolidated
revenues, generated earnings of $1.8 million and cash from operating activities
of $22.8 million for the nine months ended September 30, 2001. The
non-guarantor subsidiaries held 14.5% of our consolidated assets as of
September 30, 2001.


THE GUARANTEES ARE SUBORDINATED TO THE SENIOR DEBT OF THE GUARANTORS.

     The Guarantees are subordinated to all existing and future senior debt of
the Guarantors, which shall consist of all of the indebtedness and other
liabilities of the Guarantors designated as senior, including borrowings under
the L-3 Communications' bank credit facilities. The Guarantee rendered by L-3
Communications in connection with this offering will be pari passu with the
Senior Subordinated Notes sold by L-3 Communications in April 1997, May 1998
and December 1998, and with L-3 Communications' guarantee of the 5 1/4%
Convertible Senior Subordinated Notes due 2009 sold by L-3 Holdings in November
2000, and the Guarantees made by subsidiaries of L-3 Communications in
connection with this offering will be pari passu with the guarantees made by
those subsidiaries relating to the Senior Subordinated Notes and the
Convertible Senior Subordinated Notes. As of September 30, 2001, our
subsidiaries had no senior debt outstanding, but L-3 Communications had the
ability to borrow up to $499.5 million, after reduction for outstanding letters
of credit of $100.5 million, under its bank credit facilities, which if
borrowed would be senior debt. Any right of L-3 Holdings to receive the assets
of any of its subsidiaries upon their liquidation or reorganization, and the
consequent right of the holders of the CODES to participate in those assets,
will be subject to the claims of that subsidiary's creditors, including trade
creditors. To the extent that L-3 Holdings is recognized as a creditor of that
subsidiary, L-3 Holdings may have such claim, but it would still be subordinate
to any security interests in the assets of that subsidiary and any indebtedness
and other liabilities of that subsidiary senior to that held by L-3 Holdings.


FUTURE SALES OF THE COMMON STOCK OF L-3 HOLDINGS IN THE PUBLIC MARKET COULD
LOWER THE STOCK PRICE.

     We may, in the future, sell additional shares of our common stock in
subsequent public offerings. We may also issue additional shares of our common
stock to finance future acquisitions, including acquisitions larger than those
we have done in the past through the use of equity. Additionally, a substantial
number of shares of our common stock is available for future sale pursuant to
stock options, registration rights agreements and upon conversion of our 5.25%
Convertible Senior Subordinated Notes due 2009 or of these CODES. We cannot
predict the size of future issuances of our common stock or the effect, if any,
that future sales and issuances of shares of our common stock will have on the
market price of our common stock. Sales of substantial amounts of our common


                                       16


stock, including shares issued upon the exercise of stock options, acquisition
financing or the conversion of our 5.25% Convertible Senior Subordinated Notes
due 2009 or these CODES, or the perception that such sales could occur, may
adversely affect prevailing market prices for our common stock.


DELAWARE LAW AND THE CHARTER DOCUMENTS OF L-3 HOLDINGS MAY IMPEDE OR DISCOURAGE
A TAKEOVER, WHICH COULD CAUSE THE MARKET PRICE OF ITS SHARES TO DECLINE.

     We are a Delaware corporation and the anti-takeover provisions of Delaware
law impose various impediments to the ability of a third party to acquire
control of us, even if a change in control would be beneficial to our existing
stockholders. In addition, our board of directors has the power, without
stockholders' approval, to designate the terms of one or more series of
preferred stock and issue shares of preferred stock, which could be used
defensively if a takeover is threatened. Our certificate of incorporation and
by-laws provide for a classified board of directors serving staggered
three-year terms, restrictions on who may call a special meeting of
stockholders and a prohibition on stockholder action by written consent. All
options issued under our stock option plans automatically vest upon a change in
control of L-3 Holdings. Our incorporation under Delaware law, the ability of
our board of directors to create and issue a new series of preferred stock, the
acceleration of the vesting of the outstanding stock options that we have
granted upon a change in control of L-3 Holdings, and certain provisions of L-3
Holdings' certificate of incorporation and by-laws could impede a merger,
takeover or other business combination involving L-3 Holdings or discourage a
potential acquiror from making a tender offer for the common stock of L-3
Holdings, which, under certain circumstances, could reduce the market value of
our common stock.


THIS PROSPECTUS CONTAINS FORWARD LOOKING STATEMENTS, WHICH MAY NOT BE CORRECT.

     Certain of the matters discussed concerning our operations, economic
performance and financial condition, including in particular, the likelihood of
our success in developing and expanding our business and the realization of
sales from backlog, include forward-looking statements within the meaning of
Section 27A of the Securities Act and Section 21E of the Securities Exchange
Act of 1934 ("Exchange Act"). Statements that are predictive in nature, that
depend upon or refer to future events or conditions or that include words such
as "expects," "anticipates," "intends," "plans," "believes," "estimates" and
similar expressions are forward-looking statements. Although we believe that
these statements are based upon reasonable assumptions, we can give no
assurance that their goals will be achieved.


                                       17


                                USE OF PROCEEDS

     We will not receive any proceeds from the resale of the CODES or the
shares of common stock which are issuable upon conversion of the CODES.


                                DIVIDEND POLICY

     L-3 Holdings currently intends to retain its earnings to finance future
growth and, therefore, does not anticipate paying any cash dividends on its
common stock in the foreseeable future. Any determination as to the payment of
dividends will depend upon the future results of operations, capital
requirements and financial condition of L-3 Holdings and its subsidiaries and
such other facts as the board of directors of Holdings may consider, including
any contractual or statutory restrictions on L-3 Holdings' ability to pay
dividends. Moreover, L-3 Holdings is a holding company and its ability to pay
dividends is dependent upon receipt of dividends, distributions, advances,
loans or other cash transfers from L-3 Communications. Certain outstanding debt
instruments of L-3 Communications limit its ability to pay dividends or other
distributions on its common stock or to make advances, loans or other cash
transfers to L-3 Holdings.


                            SELLING SECURITYHOLDERS

     The selling holders are offering CODES and shares of common stock issuable
upon conversion of the CODES under this prospectus pursuant to existing
registration rights conferred by the Registration Rights Agreement dated as of
October 24, 2001 among L-3 Holdings, the Guarantors named therein and Lehman
Brothers Inc., Bear, Stearns & Co., Inc. and Credit Suisse First Boston
Corporation, as initial purchasers. The following table sets forth information,
as of December 18, 2001, with respect to the selling holders and the principal
amounts of CODES and number of shares of common stock into which the CODES are
convertible beneficially owned by each selling holder that may be offered under
this prospectus. The information is based on information provided by or on
behalf of the selling holders. The selling holders may offer all, some or none
of the CODES or common stock into which the CODES are convertible. Because the
selling holders may offer all or some portion of the CODES or the common stock,
no estimate can be given as to the amount of the CODES or the common stock that
will be held by the selling holders upon termination of any sales. In addition,
the selling holders identified below may have sold, transferred or otherwise
disposed of all or a portion of their CODES in transactions exempt from the
registration requirements of the Securities Act or pursuant to our Registration
Statement on Form S-3 and amendments or supplements thereto. Selling holders,
including their transferees, pledgees or donees or their successors, may from
time to time offer and sell pursuant to this prospectus any or all of the CODES
and common stock into which the CODES are convertible. Identification of any
additional selling holders who exercise their registration rights, if any, will
be made in the applicable prospectus supplement.



                                                                                                        SHARES OF
                                                                                                      COMMON STOCK
                                                             PRINCIPAL AMOUNT       PERCENTAGE OF     ISSUABLE UPON
                                                          OF CODES BENEFICIALLY      OUTSTANDING      CONVERSION OF
NAME                                                              OWNED              CODES OWNED        THE CODES
----                                                      ---------------------     -------------     -------------
                                                                                             
Amaranth Securities LLC ...............................         $1,500,000               0.36%           13,937
American Samoa Government .............................         $   51,000               0.01%              473
Bancroft Convertible Fund, Inc. .......................         $1,000,000               0.24%            9,291
Black Diamond Capital I, Ltd. .........................         $  537,000               0.13%            4,989
Black Diamond Convertible Offshore LDC ................         $  908,000               0.22%            8,436
Black Diamond Convertible Offshore Ltd. ...............         $1,640,000               0.39%           15,238
BP Amoco PLC Master Trust .............................         $1,498,000               0.36%           13,918
CALAMOS (Registered Trademark) Market Neutral Fund
  CALAMOS (Registered Trademark) Investment Trust .....         $7,000,000               1.67%           65,040
Chrysler Corporation Master Retirement Trust ..........         $5,490,000               1.31%           51,010
Consulting Group Capital Markets Funds ................         $  500,000               0.12%            4,645



                                       18




                                                                                                  SHARES OF
                                                                                                COMMON STOCK
                                                       PRINCIPAL AMOUNT       PERCENTAGE OF     ISSUABLE UPON
                                                    OF CODES BENEFICIALLY      OUTSTANDING      CONVERSION OF
NAME                                                        OWNED              CODES OWNED        THE CODES
----                                                ---------------------     --------------    -------------
                                                                                       
Delta Air Lines Master Trust ...................         $ 1,465,000               0.35%            13,612
Delta Pilots D&S Trust .........................         $   740,000               0.18%             6,875
Deeprock & Co. .................................         $ 2,300,000               0.55%            21,370
Double Black Diamond Offshore LDC ..............         $ 8,447,000               2.01%            78,485
Ellsworth Convertible Growth and Income
  Fund, Inc. ...................................         $ 1,000,000               0.24%             9,291
The Estate of James Campbell ...................         $   160,000               0.04%             1,486
GLG Global Convertible Fund ....................         $ 7,100,000               1.69%            65,969
GLG Global Convertible UCITS Fund ..............         $   400,000               0.10%             3,716
GLG Market Neutral Fund ........................         $ 7,500,000               1.79%            69,686
GM Employees Global GRP Pen Tr. (ABS Return
  Portfolio) ...................................         $ 1,600,000               0.38%            14,866
Goldman Sachs & Company ........................         $   250,000               0.06%             2,322
HBK Master Fund L.P. ...........................         $ 7,500,000               1.79%            69,686
HFR Master Fund ................................         $    50,000               0.01%               464
Highbridge International LLC ...................         $20,000,000               4.76%           185,830
Hotel Union & Hotel Industry of Hawaii .........         $   270,000               0.06%             2,508
James Campbell Corporation .....................         $   210,000               0.05%             1,951
Jeffries & Company Inc. ........................         $     6,000                 --                 55
Microsoft Corporation ..........................         $   795,000               0.19%             7,386
Motion Picture Industry Health Plan -- Active
  Member Fund ..................................         $   505,000               0.12%             4,692
Motion Picture Industry Health Plan -- Retiree
  Member Fund ..................................         $   215,000               0.05%             1,997
OCM Convertible Trust ..........................         $ 3,330,000               0.79%            30,940
Onex Industrial Partners Limited ...............         $ 3,770,000               0.90%            35,029
Paloma Securities LLC ..........................         $42,500,000              10.12%           394,889
Partner Reinsurance Company Ltd. ...............         $   880,000               0.21%             8,176
Pebble Capital Inc. ............................         $ 2,060,000               0.49%            19,140
Peoples Benefit Life Insurance Company
  TEAMSTERS ....................................         $ 6,900,000               1.64%            64,111
Qwest Occupational Health Trust ................         $   200,000               0.05%             1,858
Retail Clerks Pension #2 .......................         $ 2,300,000               0.55%            21,370
Silvercreek II Limited .........................         $ 7,570,000               1.80%            70,336
Silvercreek Limited Partnership ................         $ 2,600,000               0.62%            24,157
St. Albans Partners Ltd. .......................         $ 6,900,000               1.64%            64,111
State Employees' Retirement Fund of the State
  of Delaware ..................................         $ 2,185,000               0.52%            20,301
State of Connecticut Combined Investment Funds .         $ 4,595,000               1.09%            42,694
Viacom Inc. Pension Plan Master Trust ..........         $    24,000                 --                222
Zurich Institutional Benchmarks ................         $   281,000               0.07%             2,610




                                       19


                           PRICE RANGE OF COMMON STOCK


     The common stock of L-3 Holdings trades on the New York Stock Exchange
under the symbol "LLL." The last reported sale price for our common stock on
December 17, 2001 was $88.30 per share, as reported on the NYSE. The table below
sets forth closing information on the high and low closing prices for our
common stock during the periods indicated.



                                                                 PRICE RANGE
                                                               OF COMMON STOCK
                                                            --------------------
                                                              HIGH        LOW
                                                            --------    --------
                                                                    
FISCAL YEAR ENDED DECEMBER 31, 1999:
Quarter Ended:
   March 31, 1999 .......................................    $47.88      $39.38
   June 30, 1999 ........................................     52.88       44.31
   September 30, 1999 ...................................     48.44       36.38
   December 31, 1999 ....................................     45.13       34.81
FISCAL YEAR ENDED DECEMBER 31, 2000:
Quarter Ended:
   March 31, 2000 .......................................    $51.94      $35.69
   June 30, 2000 ........................................     58.63       45.25
   September 30, 2000 ...................................     63.75       52.56
   December 31, 2000 ....................................     77.56       57.19
FISCAL YEAR ENDED DECEMBER 31, 2001:
Quarter Ended:
   March 31, 2001 .......................................    $90.00      $65.00
   June 30, 2001 ........................................     88.90       76.08
   September 30, 2001 ...................................     87.45       62.48
   December 31, 2001 (through December 17, 2001) ........     96.47       79.39




                                       20


                                 CAPITALIZATION

     The following table sets forth our capitalization at September 30, 2001,
on a pro forma basis to give effect to the sale of $420.0 million of CODES,
less underwriting commissions and discounts and other estimated offering
expenses payable by us of approximately $12.6 million.



                                                                            SEPTEMBER 30, 2001
                                                                          ----------------------
                                                                               (in millions)
                                                                                           AS
                                                                           ACTUAL       ADJUSTED
                                                                          --------      --------
                                                                                  
Cash and cash equivalents ............................................    $   98.5      $  505.9
                                                                          ========      ========
Senior credit facilities(1) ..........................................    $     --      $     --
10 3/8% Senior Subordinated Notes due May 1, 2007 ....................       225.0         225.0
8 1/2% Senior Subordinated Notes due May 15, 2008 ....................       180.0         180.0
8% Senior Subordinated Notes due August 1, 2008 ......................       200.0         200.0
5 1/4% Convertible Senior Subordinated Notes due June 1, 2009 ........       300.0         300.0
4% Senior Subordinated Convertible Contingent Debt Securities
  due September 15, 2011 .............................................          --         420.0
                                                                          --------      --------
   Total debt ........................................................    $  905.0      $1,325.0
                                                                          --------      --------
Minority interest ....................................................    $   71.9      $   71.9
                                                                          --------      --------
Shareholders' equity:
  Common stock .......................................................    $    0.4      $    0.4
  Additional paid-in capital .........................................       925.8         925.8
  Retained earnings ..................................................       257.2         257.2
  Equity adjustments .................................................         7.8)          7.8)
                                                                          --------      --------
    Total stockholders' equity .......................................    $1,175.6      $1,175.6
                                                                          --------      --------
    Total capitalization .............................................    $2,152.5      $2,572.5
                                                                          ========      ========


----------
(1)   There were no outstanding borrowings under the bank credit facilities as
      of September 30, 2001. Availability under the bank credit facilities at
      any given time is $600.0 million, subject to compliance with covenants,
      less the amount of outstanding borrowings and outstanding letters of
      credit, which amounted to $100.5 million at September 30, 2001.



                                       21


                       DESCRIPTION OF OTHER INDEBTEDNESS


SENIOR CREDIT FACILITIES OF L-3 COMMUNICATIONS

     The senior credit facilities of L-3 Communications have been provided by a
syndicate of banks led by Bank of America, N.A., as administrative agent. The
senior credit facilities provide for:

     (A) $400 million in revolving credit loans which must be repaid by May 15,
2006 (the "Revolving Credit Facility"); and

     (B) $200 million in revolving credit loans which must be repaid by May 15,
2002 (the "Revolving 364 Day Facility"), together with (A) above (the "senior
credit facilities");

provided that all or a portion of the Revolving 364 Day Facility may be
extended annually on the maturity date of the Revolving 364 Day Facility for a
period of 364 days with the consent of lenders holding not less than 50% of the
commitments to make 364-day loans (May 15, 2002, as extended in accordance with
the foregoing, the "364 Day Termination Date"); and provided further that L-3
Communications may convert the outstanding principal amount of any or all of
the loans outstanding under (B) above to term loans on the 364 Day Termination
Date. The Revolving Credit Facility includes borrowing capacity available for
letters of credit and for borrowings on same-day notice (the "Swingline
Loans").

     All borrowings under the senior credit facilities bear interest, at L-3
Communications' option, at either:

     (A) "base rate" equal to, for any day, the higher of:

         o 0.50% per annum above the latest Federal Funds Rate; and

         o the rate of interest in effect for such day as publicly announced
           from time to time by Bank of America, N.A. as its "reference rate"
           plus a spread ranging from 2.00% to 0.50% per annum, depending on L-3
           Communications' ratio of debt to EBITDA, as the ratio is defined in
           the senior credit facilities (the "Debt Ratio"), at the time of
           determination or

     (B) "LIBOR" equal to, for any Interest Period (as defined in the senior
credit facilities), the London interbank offered rate of interest per annum for
such Interest Period as determined by the administrative agent, plus a spread
ranging from 3.00% to 1.50% per annum, depending on L-3 Communications' Debt
Ratio at the time of determination, provided that Swingline Loans can only bear
interest at a "base rate" plus the applicable spread.

     L-3 Communications will pay commitment fees calculated at a rate ranging
from 0.50% to 0.30% per annum, depending on L-3 Communications' Debt Ratio in
effect at the time of determination, on the daily amount of the available
unused commitment under the senior credit facilities. These commitment fees are
payable quarterly in arrears and upon termination of the senior credit
facilities.

     L-3 Communications will pay a letter of credit fee calculated at a rate
ranging from (A) 1.50% to 0.750% per annum in the case of performance letters
of credit and (B) 3.00% to 1.50% in the case of all other letters of credit, in
each case depending on L-3 Communications' Debt Ratio at the time of
determination. L-3 Communications will also pay a fronting fee equal to 0.1250%
per annum on the aggregate face amount of all outstanding letters of credit.
Such fees will be payable quarterly in arrears and upon the termination of the
senior credit facilities. In addition, L-3 Communications will pay customary
transaction charges in connection with any letters of credit. The senior credit
facilities provide for the issuance of letters of credit in currencies other
than United States dollars.

     The above interest rates are adjusted for changes in L-3 Communications'
Debt Ratio, and reach their maximum if the Debt Ratio is greater than 4.25 to
1.0 and reach their minimum if that ratio is less than 2.75 to 1.0.

     In the event that we convert any or all of the outstanding principal
amount under the Revolving 364 Day Facility into term loans (the "Applicable
Converted Commitment") on any 364 Termination Date, we would have to repay the
principal amount of the resulting term loans by May 16, 2006 or if earlier the
second anniversary date of the effectiveness of such conversion into term
loans.


                                       22


     Borrowings under the senior credit facilities are subject to mandatory
prepayment (i) with the net proceeds of any incurrence of indebtedness and (ii)
with the proceeds of asset sales, in both cases subject to certain exceptions.

     L-3 Communications' obligations under the senior credit facilities are
secured by:

     o a pledge by L-3 Holdings of the stock of L-3 Communications; and

     o a pledge by L-3 Communications and its material direct and indirect
       subsidiaries of all of the stock of their respective material domestic
       subsidiaries and 65% of the stock of L-3 Communications' material
       first-tier foreign subsidiaries. In addition, indebtedness under the
       senior credit facilities is guaranteed by L-3 Holdings and by all of L-3
       Communications' direct and indirect material domestic subsidiaries.

     The senior credit facilities contain customary covenants and restrictions
on L-3 Communications' ability to engage in certain activities. In addition,
the senior credit facilities provide that L-3 Communications must meet or
exceed an interest coverage ratio and must not exceed a leverage ratio. The
senior credit facilities also include customary events of default.


10 3/8% SENIOR SUBORDINATED NOTES DUE 2007

     L-3 Communications has outstanding $225.0 million in aggregate principal
amount of its 10 3/8% Senior Subordinated Notes due 2007, the "1997 Notes". The
1997 Notes are subject to the terms and conditions of an Indenture, the "1997
Indenture", dated as of April 30, 1997 between L-3 Communications and The Bank
of New York, as trustee. The 1997 Notes are subject to all of the terms and
conditions of the 1997 Indenture. The following summary of the material
provisions of the 1997 Indenture does not purport to be complete, and is
subject to, and qualified in its entirety by reference to, all of the
provisions of the 1997 Indenture and those terms made a part of the 1997
Indenture by the Trust Indenture Act of 1939, as amended. All terms defined in
the 1997 Indenture and not otherwise defined herein are used below with the
meanings set forth in the 1997 Indenture.

 General

     The 1997 Notes will mature on May 1, 2007 and bear interest at 10 3/8% per
annum, payable semi-annually on May 1 and November 1 of each year. The 1997
Notes are general unsecured obligations of L-3 Communications and are
subordinated in right of payment to all existing and future senior debt of L-3
Communications and rank pari passu with the May 1998 Notes and the December
1998 Notes. The 1997 Notes are unconditionally guaranteed, on an unsecured
senior subordinated basis, jointly and severally, by all of L-3 Communications'
restricted subsidiaries other than its foreign subsidiaries.

 Optional Redemption

     The 1997 Notes are subject to redemption at any time, at the option of L-3
Communications, in whole or in part, on or after May 1, 2002 at redemption
prices, plus accrued and unpaid interest, starting at 105.188% of principal,
plus accrued and unpaid interest, during the 12-month period beginning May 1,
2002 and declining annually to 100% of principal, plus accrued and unpaid
interest, on May 1, 2005 and thereafter.

 Change of Control

     Upon the occurrence of a change of control, each holder of the 1997 Notes
may require L-3 Communications to repurchase all or a portion of such holders
of the 1997 Notes at a purchase price equal to 101% of the principal amount
thereof, plus accrued and unpaid interest. Generally, a change of control means
the occurrence of any of the following:

     o the disposition of all or substantially all of L-3 Communications' assets
       to any person;

     o the adoption of a plan relating to the liquidation or dissolution of L-3
       Communications;


                                       23


     o the consummation of any transaction in which a person other than the
       principals and their related parties becomes the beneficial owner of more
       than 50% of the voting stock of L-3 Communications; or

     o the first day on which a majority of the members of the Board of
       Directors of L-3 Communications are not continuing directors.

 Subordination

     The 1997 Notes are general unsecured obligations of L-3 Communications and
are subordinate to all of its existing and future senior debt. The 1997 Notes
rank senior in right of payment to all subordinated indebtedness of L-3
Communications. The guarantees of L-3 Communictions' subsidiaries under the
1997 Notes are general unsecured obligations of the guarantors and are
subordinated to the senior debt and to the guarantees of senior debt of those
guarantors. These guarantees under the 1997 Notes rank senior in right of
payment to all subordinated indebtedness of those guarantors.

 Certain Covenants

     The 1997 Indenture contains a number of covenants restricting the
operations of L-3 Communications, which, among other things, limit the ability
of L-3 Communications to incur additional indebtedness, pay dividends or make
distributions, sell assets, issue subsidiary stock, restrict distributions from
subsidiaries, create certain liens, enter into certain consolidations or
mergers and enter into certain transactions with affiliates.

 Events of Default

     Events of default under the 1997 Indenture include the following:

     o a default for 30 days in the payment when due of interest on the 1997
       Notes;

     o default in payment when due of the principal of or premium, if any, on
       the 1997 Notes;

     o failure by L-3 Communications to comply with certain provisions of the
       1997 Indenture, subject, in some but not all cases, to notice and cure
       periods;

     o default under indebtedness for money borrowed by L-3 Communications or
       any of its restricted subsidiaries in excess of $10.0 million;

     o failure by L-3 Communications or any restricted subsidiary that would be
       a significant subsidiary to pay final judgments aggregating in excess of
       $10.0 million, which judgments are not paid, discharged or stayed for a
       period of 60 days;

     o except as permitted by the Indenture, any guarantee under the 1997 Notes
       shall be held in any judicial proceeding to be unenforceable or invalid
       or shall cease for any reason to be in full force and effect or any
       guarantor, or any person acting on behalf of any guarantor under the 1997
       Notes, shall deny or disaffirm its obligations under its guarantee; or

     o certain events of bankruptcy or insolvency with respect to L-3
       Communications or any of its restricted subsidiaries.

     Upon the occurrence of an event of default with certain exceptions, the
trustee or the holders of at least 25% in principal amount of the then
outstanding 1997 Notes may accelerate the maturity of all the 1997 Notes as
provided in the 1997 Indenture.


8 1/2% SENIOR SUBORDINATED NOTES DUE 2008

     L-3 Communications has outstanding $180.0 million in aggregate principal
amount of 8 1/2% Senior Subordinated Notes due 2008, the "May 1998 Notes". The
May 1998 Notes are subject to the terms and conditions of an Indenture, the
"May 1998 Indenture", dated as of May 22, 1998, between L-3 Communications and
The Bank of New York as trustee. The May 1998 Notes are subject to all of the
terms and conditions of the May 1998 Indenture. The following summary of the
material provisions of


                                       24


the May 1998 Indenture is complete, and is subject to, and qualified in its
entirety by reference to, all of the provisions of the May 1998 Indenture and
those terms made a part of the May 1998 Indenture by the Trust Indenture Act of
1939, as amended. All terms defined in the May 1998 Indenture and not otherwise
defined herein are used below with the meanings set forth in the May 1998
Indenture.

 General

     The May 1998 Notes will mature on May 15, 2008 and bear interest at 8 1/2%
per annum, payable semi-annually on May 15 and November 15 of each year. The
May 1998 Notes are general unsecured obligations of L-3 Communications and are
subordinated in right of payment to all existing and future senior debt of L-3
Communications and rank pari passu with the 1997 Notes and the December 1998
Notes. The May 1998 Notes are unconditionally guaranteed, on an unsecured
senior subordinated basis, jointly and severally by all of L-3 Communications'
restricted subsidiaries other than its foreign subsidiaries.

 Optional Redemption

     The May 1998 Notes are subject to redemption at any time, at the option of
L-3 Communications, in whole or in part, on or after May 15, 2003 at redemption
prices, plus accrued and unpaid interest, starting at 104.250% of principal,
plus accrued and unpaid interest, during the 12-month period beginning May 15,
2003 and declining annually to 100% of principal, plus accrued and unpaid
interest, on May 15, 2006 and thereafter.

 Change of Control

     Upon the occurrence of a change of control, each holder of the May 1998
Notes may require L-3 Communications to repurchase all or a portion of the
holder's May 1998 Notes at a purchase price equal to 101% of the principal
amount, plus accrued and unpaid interest: Generally, a change of control means
the occurrence of any of the following:

     o the disposition of all or substantially all of L-3 Communications' assets
       to any person;

     o the adoption of a plan relating to the liquidation or dissolution of L-3
       Communications;

     o the consummation of any transaction in which a person other than the
       principals and their related parties becomes the beneficial owner of more
       than 50% of the voting stock of L-3 Communications; or

     o the first day on which a majority of the members of the Board of
       Directors of L-3 Communications are not continuing directors.

 Subordination

     The May 1998 Notes are general unsecured obligations of L-3 Communications
and are subordinate to all existing and future senior debt of L-3
Communications. The May 1998 Notes rank senior in right of payment to all
subordinated indebtedness of L-3 Communications. The guarantees of L-3
Communications subsidiaries under the May 1998 Notes are general unsecured
obligations of the guarantors and are subordinated to the senior debt and to
the guarantees of senior debt of those guarantors. These guarantees under the
May 1998 Notes rank senior in right of payment to all subordinated indebtedness
of those guarantors.

 Certain Covenants

     The May 1998 Indenture contains a number of covenants restricting the
operations of L-3 Communications. They limit the ability of L-3 Communications
to incur additional indebtedness, pay dividends or make distributions, sell
assets, issue subsidiary stock, restrict distributions from Subsidiaries,
create certain liens, enter into certain consolidations or mergers and enter
into certain transactions with affiliates.


                                       25


 Events of Default

     Events of Default under the May 1998 Indenture include the following:

     o a default for 30 days in the payment when due of interest on the May 1998
       Notes;

     o default in payment when due of the principal of or premium, if any, on
       the May 1998 Notes;

     o failure by L-3 Communications to comply with certain provision of the May
       1998 Indenture, subject, in some but not all cases, to notice and cure
       periods;

     o default under indebtedness for money borrowed by L-3 Communications or
       any of its Restricted Subsidiaries in excess of $10.0 million;

     o failure by L-3 Communications or any Restricted Subsidiary that would be
       a Significant Subsidiary to pay final judgments aggregating in excess of
       $10.0 million, which judgments are not paid, discharged or stayed for a
       period of 60 days;

     o except as permitted by the May 1998 Indenture, any guarantee under the
       May 1998 Notes shall be held in any judicial proceeding to be
       unenforceable or invalid or shall cease for any reason to be in full
       force and effect or any guarantor, or any person acting on behalf of any
       guarantor under the May 1998 Notes, shall deny or disaffirm its
       obligations under its guarantee; or

     o certain events of bankruptcy or insolvency with respect to L-3
       Communications or any of its restricted subsidiaries.

     Upon the occurrence of an event of default, with certain exceptions, the
Trustee or the holders of at least 25% in principal amount of the then
outstanding May 1998 Notes may accelerate the maturity of all the May 1998
Notes as provided in the May 1998 Indenture.


8% SENIOR SUBORDINATED NOTES DUE 2008

     L-3 Communications has outstanding $200.0 million in aggregate principal
amount of 8% Senior Subordinated Notes due 2008, the "December 1998 Notes". The
December 1998 Notes are subject to the terms and conditions of an Indenture
dated as of December 11, 1998, among L-3 Communications, the guarantors named
therein and The Bank of New York as trustee, the "December 1998 Indenture". The
December 1998 Notes are subject to all of the terms and conditions of the
December 1998 Indenture. The following summary of the material provisions of
the December 1998 Indenture does not purport to be complete, and is subject to
and qualified in its entirety by reference to, all of the provisions of the
December 1998 Indenture and those terms made a part of the December 1998
Indenture by the Trust Indenture Act of 1939, as amended. All terms defined in
the December 1998 Indenture and not otherwise defined herein are used below
with the meanings set forth in the December 1998 Indenture.

 General

     The December 1998 Notes will mature on August 1, 2008 and bear interest at
8% per annum, payable semi-annually on February 1 and August 1 of each year.
The December 1998 Notes are general unsecured obligations of L-3 Communications
and are subordinated in right of payment to all existing and future senior debt
of L-3 Communications and rank pari passu with the 1997 Notes and the May 1998
Notes. The December 1998 Notes are unconditionally guaranteed, on an unsecured
senior subordinated basis, jointly and severally by all of L-3 Communications'
restricted subsidiaries other than its foreign subsidiaries.

 Optional Redemption

     The December 1998 Notes are subject to redemption at any time, at the
option of L-3 Communications, in whole or in part, on or after August 1, 2003
at redemption prices, plus accrued and unpaid interest, starting at 104% of
principal, plus accrued and unpaid interest, during the 12-month period
beginning August 1, 2003 and declining annually to 100% of principal, plus
accrued and unpaid interest, on August 1, 2006 and thereafter.


                                       26


 Change of Control

     Upon the occurrence of a change of control, each holder of the December
1998 Notes may require L-3 Communications to repurchase all or a portion of
such holder's December 1998 Notes at a purchase price equal to 101% of the
principal amount, plus accrued and unpaid interest and liquidated damages, if
any. Generally, a change of control means the occurrence of any of the
following:

     o the disposition of all or substantially all of L-3 Communications' assets
       to any person;

     o the adoption of a plan relating to the liquidation or dissolution of L-3
       Communications;

     o the consummation of any transaction in which a person other than the
       principals and their related parties becomes the beneficial owner of more
       than 50% of the voting stock of L-3 Communications; or

     o the first day on which a majority of the members of the Board of
       Directors of L-3 Communications are not continuing directors.

 Subordination

     The December 1998 Notes are general unsecured obligations of L-3
Communications and are subordinate to all existing and future senior debt of
L-3 Communications. The December 1998 Notes rank senior in right of payment to
all subordinated indebtedness of L-3 Communications. The guarantees of L-3
Communications' subsidiaries under the December 1998 Notes are general
unsecured obligations of the guarantors and are subordinated to the senior debt
and to the guarantees of senior debt of those guarantors. These guarantees
under the December 1998 Notes rank senior in right of payment to all
subordinated Indebtedness of those guarantors.

 Certain Covenants

     The December 1998 Indenture contains a number of covenants restricting the
operations of L-3 Communications, limiting the ability of L-3 Communications to
incur additional Indebtedness, pay dividends or make distributions, sell
assets, issue subsidiary stock, restrict distributions from subsidiaries,
create certain liens, enter into certain consolidations or mergers and enter
into certain transactions with affiliates.

 Events of Default

     Events of Default under the December 1998 Indenture include the following:

     o a default for 30 days in the payment when due of interest on, or
       liquidated damages with respect to the December 1998 Notes;

     o default in payment when due of the principal of or premium, if any, on
       the December 1998 Notes;

     o failure by L-3 Communications to comply with certain provision of the
       December 1998 Indenture, subject, in some but not all cases, to notice
       and cure periods;

     o default under indebtedness for money borrowed by L-3 Communications or
       any of its restricted subsidiaries in excess of $10.0 million;

     o failure by L-3 Communications or any restricted subsidiary that would be
       a significant subsidiary to pay final judgments aggregating in excess of
       $10.0 million, which judgments are not paid, discharged or stayed for a
       period of 60 days;


                                       27


     o except as permitted by the December 1998 Indenture, any guarantee under
       the December 1998 Notes shall be held in any judicial proceeding to be
       unenforceable or invalid or shall cease for any reason to be in full
       force and effect or any guarantor, or any person acting on behalf of any
       guarantor under the December 1998 Notes, shall deny or disaffirm its
       obligations under its guarantee; or

     o certain events of bankruptcy or insolvency with respect to L-3
       Communications or any of its restricted subsidiaries.

     Upon the occurrence of an Event of Default, with certain exceptions, the
Trustee or the holders of at least 25% in principal amount of the then
outstanding December 1998 Notes may accelerate the maturity of all the December
1998 Notes as provided in the December 1998 Indenture.


5 1/4% CONVERTIBLE SENIOR SUBORDINATED NOTES DUE 2009

     L-3 Holdings has outstanding $300.0 million in aggregate principal amount
of 5 1/4% Convertible Senior Subordinated Notes due 2009, the "2000 Convertible
Notes". The 2000 Convertible Notes are subject to the terms and conditions of
an Indenture dated as of November 21, 2000, among L-3 Holdings, the guarantors
named therein and The Bank of New York as trustee, the "2000 Indenture". The
2000 Convertible Notes are subject to all of the terms and conditions of the
2000 Indenture. The following summary of the material provisions of the 2000
Indenture does not purport to be complete, and is subject to and qualified in
its entirety by reference to, all of the provisions of the 2000 Indenture and
those terms made a part of the 2000 Indenture by the Trust Indenture Act of
1939, as amended. All terms defined in the 2000 Indenture and not otherwise
defined herein are used below with the meanings set forth in the 2000
Indenture.

 General

     The 2000 Convertible Notes will mature on June 1, 2009 and bear interest
at 5 1/4% per annum, subject to certain circumstances, payable semi-annually on
June 1 and December 1 of each year. The 2000 Convertible Notes are unsecured
senior subordinated obligations of L-3 Holdings and are subordinated in right
of payment to all existing and future senior debt of L-3 Holdings and rank pari
passu with the 1997 Notes, the May 1998 Notes, and the December 1998 Notes. The
2000 Convertible Notes are unconditionally guaranteed, on an unsecured senior
subordinated basis, jointly and severally by all of L-3 Communications'
restricted subsidiaries other than its foreign subsidiaries. Holders of the
2000 Convertible Notes may convert the 2000 Convertible Notes into shares of
L-3 Holdings' common stock at a conversion rate of $81.50 per share, equal to a
conversion rate of 12.2699 shares per $1,000 principal amount of 2000
Convertible Notes, subject to adjustment under certain circumstances.

 Optional Redemption

     The 2000 Convertible Notes are subject to redemption at any time, at the
option of L-3 Holdings, in whole or in part, on or after December 1, 2003 at
redemption prices, plus accrued and unpaid interest, starting at 102.625% of
principal, plus accrued and unpaid interest, during the 12-month period
beginning December 1, 2003 and declining annually to 100% of principal, plus
accrued and unpaid interest, on December 1, 2005 and thereafter. No interest
will be paid on the 2000 Convertible Notes that are converted into common stock
of L-3 Holdings, except the 2000 Convertible Notes that are called for
redemption on a date that is after a record date but prior to the corresponding
interest payment date if the 2000 Convertible Notes are converted into common
stock after the record date.

 Change of Control

     Upon the occurrence of a change of control, each holder of the 2000
Convertible Notes may require L-3 Holdings to repurchase all or a portion of
such holder's 2000 Convertible Notes at a purchase price equal to 100% of the
principal amount, plus accrued and unpaid interest and liquidated damages, if
any. Generally, a change of control means the occurrence of any of the
following:

     o the disposition of all or substantially all of the assets of L-3 Holdings
       and certain of its subsidiaries to any person;


                                       28


     o the adoption of a plan relating to the liquidation or dissolution of L-3
       Holdings;

     o the consummation of any transaction in which a person other than the
       principals and their related parties becomes the beneficial owner of more
       than 50% of the voting stock of L-3 Holdings;

     o the first day on which a majority of the members of the Board of
       Directors of L-3 Holdings are not continuing directors; or

     o the consolidation or merger of L-3 Holdings with or into any other
       person, the merger of another person into L-3 Holdings or any conveyance,
       transfer, sale, lease, or other disposition of all or substantially all
       of the properties and assets of L-3 Holdings to another person, subject
       to certain exceptions.

 Subordination

     The 2000 Convertible Notes are unsecured senior subordinated obligations
of L-3 Holdings and are subordinate to all existing and future senior debt of
L-3 Holdings. The guarantees of L-3 Holdings' subsidiaries under the 2000
Convertible Notes are general unsecured obligations of the guarantors and are
subordinated to the senior debt and to the guarantees of senior debt of those
guarantors. These guarantees under the 2000 Convertible Notes rank pari passu
with all subordinated indebtedness of those guarantors.

 Antilayering Provision

     The 2000 Indenture provides that (i) L-3 Holdings will not incur, create,
issue, assume, guarantee or otherwise become liable for any indebtedness that
is subordinate or junior in right of payment to any senior debt and senior in
any respect in right of payment to the 2000 Convertible Notes, and (ii) no
guarantor of the 2000 Convertible Notes will incur, create, issue, assume,
guarantee or otherwise become liable for any indebtedness that is subordinate
or junior in right of payment to any senior debt of a guarantor and senior in
any respect in right of payment to any of the subsidiary guarantees of the 2000
Convertible Notes.

 Events of Default

     Events of Default under the 2000 Indenture include the following:

     o a default for 30 days in the payment when due of interest on, or
       liquidated damages with respect to, the 2000 Convertible Notes;

     o default in payment when due of the principal of or premium, if any, on
       the 2000 Convertible Notes;

     o failure by L-3 Holdings for 60 days after notice to comply with certain
       provisions of the 2000 Convertible Indenture, subject, in some but not
       all cases, to notice and cure periods;

     o default under indebtedness for money borrowed by L-3 Holdings or any of
       its restricted subsidiaries that would be a significant subsidiary in
       excess of $10.0 million;

     o failure by L-3 Holdings or any restricted subsidiary that would be a
       significant subsidiary to pay final judgments aggregating in excess of
       $10.0 million, which judgments are not paid, discharged or stayed for a
       period of 60 days;

     o except as permitted by the 2000 Indenture, any guarantee under the 2000
       Convertible Notes shall be held in any judicial proceeding to be
       unenforceable or invalid; and

     o certain events of bankruptcy, insolvency or reorganization with respect
       to L-3 Holdings or any of its restricted subsidiaries that would be
       significant subsidiaries.

     Upon the occurrence of an Event of Default, with certain exceptions, the
Trustee or the holders of at least 25% in principal amount of the then
outstanding 2000 Convertible Notes may accelerate the maturity of all the 2000
Convertible Notes as provided in the 2000 Indenture.


                                       29


                           DESCRIPTION OF THE CODES

     The CODES were issued under an indenture, dated October 24, 2001 among us,
the Guarantors and The Bank of New York, as trustee. The terms of the CODES
include those provided in the indenture and those provided in the registration
rights agreement, which we and the Guarantors entered into with the initial
purchasers on October 24, 2001.

     The following description is only a summary of the material provisions of
the CODES, the indenture and the registration rights agreement. We urge you to
read these documents in their entirety because they, and not this description,
define your rights as holders of these CODES. You may request copies of these
documents at our address set forth under the caption "Prospectus Summary -- The
Company."

     When we refer to L-3 Holdings in this section, we refer only to L-3
Communications Holdings, Inc., a Delaware corporation, and not its
subsidiaries.


BRIEF DESCRIPTION OF THE CODES

     The CODES:

     o are limited to $420.0 million in aggregate principal amount, which
       includes $350.0 million in aggregate principal amount issued to the
       initial purchasers in the initial offering and $70.0 million in aggregate
       principal amount issued to the initial purchasers upon exercise in full
       of their option to purchase additional CODES;

     o bear interest at a rate of 4.00% per year, subject to interest rate
       adjustments as described below;

     o bear contingent interest in the circumstances described under "--
       Contingent Interest";

     o are general unsecured obligations, junior in right of payment to all
       existing and future Senior Debt of us and of the Guarantors, and pari
       passu with our outstanding 2000 Convertible Notes and guaranteed on a
       pari passu basis with the Guarantors' senior subordinated indebtedness,
       including the 1997 Notes, May 1998 Notes and December 1998 Notes;

     o are convertible into our common stock at a conversion price of $107.625
       per share, subject to adjustment as described below under "-- Conversion
       Rights," in the following circumstances:

       o if the sale price of our common stock is above 120% of the conversion
         price measured over a specified number of trading days;

       o if the ratio of the trading price of the CODES to the conversion value
         of the CODES is below 105% measured over a specified number of trading
         days;

       o during any period in which the credit ratings assigned to the CODES by
         Moody's is lower than "B3" or by Standard & Poor's is lower than "B-,"
         or in which the credit rating assigned to the CODES is suspended or
         withdrawn by either rating agency or in which neither agency continues
         to rate the CODES or provide ratings services or coverage to L-3
         Holdings;

       o if the CODES have been called for redemption; or

       o upon the occurrence of specified corporate transactions;

     o are redeemable at our option in whole or in part beginning on October 24,
       2004 upon the terms and the redemption prices set forth below under "--
       Optional Redemption by L-3 Holdings";

     o are unconditionally guaranteed by the Guarantors;

     o are subject to repurchase by us at your option if a Change of Control
       occurs; and

     o are due on September 15, 2011, unless earlier converted, redeemed by us
       at our option or repurchased by us at your option.

     The indenture does not contain any financial covenants and does not
restrict L-3 Holdings or the Guarantors from paying dividends, incurring Senior
Debt or any other indebtedness or issuing or repurchasing their other
securities. The indenture also does not protect you in the event of a highly


                                       30


leveraged transaction or a change in control of L-3 Holdings except to the
extent described under "-- Repurchase at Option of Holders -- Change of
Control" below.

     Under the indenture, we agree, and by purchasing a beneficial interest in
the CODES each holder of the CODES is deemed to have agreed, among other things,
for United States federal income tax purposes, to treat the CODES as
indebtedness that is subject to the regulations governing contingent payment
debt instruments, and, for purposes of those regulations, to treat the fair
market value of any stock received upon any conversion of the CODES as a
contingent payment, and the discussion herein assumes that such treatment is
correct. However, the characterization of instruments such as the CODES and the
application of such regulations is uncertain in several respects. See "Certain
United States Federal Income Tax Considerations -- Classification of the CODES."

     You may present definitive CODES for conversion, registration of transfer
or exchange, without service charge, at our office or agency in New York City,
which shall initially be the office or agency of the trustee in New York City.
For information regarding conversion, registration of transfer and exchange of
global CODES, see "-- Form, Denomination and Registration."


BRIEF DESCRIPTION OF THE GUARANTEES

     These CODES are jointly and severally guaranteed by certain of L-3
Holdings' existing and future domestic subsidiaries as described below under
"-- Subsidiary Guarantees."

     The Guarantees of these CODES:

     o are general unsecured obligations of each Guarantor;

     o are subordinated in right of payment to all existing and future Senior
       Debt of each Guarantor;

     o rank pari passu with the obligations of L-3 Communications and the other
       Guarantors under L-3 Communications' outstanding:

       o 10 3/8% Senior Subordinated Notes due 2007;

       o 8 1/2% Senior Subordinated Notes due 2008; and

       o 8% Senior Subordinated Notes due 2008 (collectively, the "Outstanding
         Senior Subordinated Notes"); and

     o rank pari passu with the obligations of L-3 Communications and the other
       Guarantors under L-3 Holdings' outstanding 5 1/4% Convertible Senior
       Subordinated Notes due 2009.


INTEREST

     The CODES bear interest from October 24, 2001 at the rate of 4.00% per
year, subject to adjustment upon the occurrence of a Reset Transaction. See "--
Interest Rate Adjustments" below. We will also pay contingent interest on the
CODES in the circumstances described under "-- Contingent Interest." We will
pay interest semiannually on March 15 and September 15 of each year to the
holders of record at the close of business on the preceding March 1 and
September 1, respectively, beginning March 15, 2002. There are two exceptions
to the preceding sentence:

     o In general, we will not pay interest accrued and unpaid on any CODES that
       is converted into our common stock. See "-- Conversion Rights." If a
       holder of CODES converts after a record date for an interest payment but
       prior to the corresponding interest payment date, it will receive on the
       interest payment date interest accrued and paid on such CODES,
       notwithstanding the conversion of such CODES prior to such interest
       payment date, because that holder will have been the holder of record on
       the corresponding record date. However, at the time the holder surrenders
       those CODES for conversion, except as provided below, it must pay us an
       amount equal to the interest that will be paid on the interest payment
       date. The preceding sentence does not apply, however, to a holder that
       converts CODES that are


                                       31


       called by us for redemption. Accordingly, if we elect to redeem CODES on
       a date after a record date for an interest payment but prior to the
       corresponding interest payment date, and prior to the redemption date the
       holder of those CODES chooses to convert the CODES, the holder will not
       be required to pay us, at the time it surrenders the CODES for
       conversion, the amount of interest on the CODES it will receive on the
       interest payment date. In addition and notwithstanding the foregoing,
       upon conversion of any CODES on or after October 24, 2004 and prior to
       March 15, 2005, we will pay to the holder of such CODES at the time of
       such conversion (unless that conversion takes place after March 1, 2005,
       in which case the payment will be made on the interest payment date) all
       unpaid interest (including contingent interest) accrued to October 24,
       2004, if any, on the CODES so converted, regardless of whether such
       converted CODES have been called for redemption.

     o We will pay interest to a person other than the holder of record on the
       record date if we redeem the CODES on a date that is after the record
       date and prior to the corresponding interest payment date. In this
       instance, we will pay interest accrued and unpaid on the CODES being
       redeemed to but not including the redemption date to the same person to
       whom we will pay the principal of such CODES.

     Except as provided below, we will pay interest on:

     o the global CODES to DTC in immediately available funds;

     o any definitive CODES having an aggregate principal amount of $5,000,000
       or less by check mailed to the holders of these CODES; and

     o any definitive CODES having an aggregate principal amount of more than
       $5,000,000 by wire transfer in immediately available funds at the
       election of the holders of these CODES.

     At maturity, we will pay interest on the definitive CODES at our office or
agency in New York City, which initially will be the office or agency of the
trustee in New York City.

     We will pay principal and premium, if any, on:

     o the global CODES to DTC in immediately available funds; and

     o the definitive CODES by wire transfer in immediately available funds or,
       at our option, at our office or agency in New York City, which initially
       will be the office or agency of the trustee in New York City.

     Interest generally will be computed on the basis of a 360-day year
comprised of twelve 30-day months.


INTEREST RATE ADJUSTMENTS

     If a Reset Transaction occurs, the interest rate will be adjusted to equal
the Adjusted Interest Rate from the effective date of such Reset Transaction
to, but not including, the effective date of any succeeding Reset Transaction.

     A "Reset Transaction" means:

     o a merger, consolidation or statutory share exchange to which the entity
       that is the issuer of the common stock into which the CODES are then
       convertible is a party;

     o a sale of all or substantially all the assets of that entity;

     o a recapitalization of that common stock; or

     o a distribution described in the fourth bullet point under "-- Conversion
       Rights -- Conversion Price Adjustments" below,

after the effective date of which transaction or distribution the CODES would
be convertible into:

                                       32


     o shares of an entity the common stock of which had a dividend yield for
       the four fiscal quarters of such entity immediately preceding the public
       announcement of the transaction or distribution that was more than 2.5%
       higher than the dividend yield on our common stock (or other common stock
       then issuable upon conversion of the CODES) for the four fiscal quarters
       preceding the public announcement of the transaction or distribution; or

     o shares of an entity that announces a dividend policy prior to the
       effective date of the transaction or distribution which policy, if
       implemented, would result in a dividend yield on that entity's common
       stock for the next four fiscal quarters that would result in such a 2.5%
       increase.

     The "Adjusted Interest Rate" with respect to any Reset Transaction will be
the rate per year that is the arithmetic average of the rates quoted by two
dealers engaged in the trading of convertible securities selected by us or our
successor as the rate at which interest should accrue so that the fair market
value, expressed in dollars, of the CODES immediately after the later of:

     o the public announcement of the Reset Transaction; or

     o the public announcement of a change in dividend policy in connection with
       the Reset Transaction,

will equal the average trading price (as described below, under "-- Conversion
Rights -- Conversion Upon Satisfaction of Market Price Conditions") of the
CODES for the 20 trading days preceding the date of public announcement of the
Reset Transaction. However, the Adjusted Interest Rate will not be less than
4.00% per year.

     For purposes of the definition of "Reset Transaction," the dividend yield
on any security for any period means the dividends paid or proposed to be paid
pursuant to an announced dividend policy on the security for that period
divided by, if with respect to dividends paid on that security, the average
sale price (as defined below) of the security during that period and, if with
respect to dividends proposed to be paid on the security, the sale price of
such security on the effective date of the related Reset Transaction.

     The "sale price" of a security on any date of determination means:

     o the closing sale price (or, if no closing sale price is reported, the
       last reported sale price) of a security (regular way) on the New York
       Stock Exchange on that date;

     o if that security is not listed on the New York Stock Exchange on that
       date, the closing sale price as reported in the composite transactions
       for the principal U.S. securities exchange on which that security is
       listed;

     o if that security is not so listed on a U.S. national or regional
       securities exchange, the closing sale price as reported by the Nasdaq
       National Market;

     o if that security is not so reported, the last price quoted by Interactive
       Data Corporation for that security or, if Interactive Data Corporation is
       not quoting such price, a similar quotation service selected by us;

     o if that security is not so quoted, the average of the mid-point of the
       last bid and ask prices for that security from at least two dealers
       recognized as market-makers for that security; or

     o if that security is not so quoted, the average of that last bid and ask
       prices for that security from a dealer engaged in the trading of
       convertible securities.


                                       33


CONTINGENT INTEREST

     In addition to the interest we will pay as described under "-- Interest"
and "-- Interest Rate Adjustments," we will pay contingent interest, subject to
the accrual and record date provisions described above, to the holders of CODES
during the six-month periods from March 15 to September 14 and from September
15 to March 14, as appropriate, commencing with the six-month period beginning
March 15, 2002, if the average trading price, as described below under "--
Conversion Rights -- Conversion Upon Satisfaction of Market Price Conditions,"
of a CODES for the five trading days ending on the second trading day
immediately preceding the beginning of the relevant six-month period equals
120% or more of the principal amount of CODES.

     The rate of contingent interest payable in respect of any six-month period
will equal the greater of (i) a per annum rate equal to 5.0% of our estimated
per annum borrowing rate for senior subordinated non-convertible fixed-rate
indebtedness with a maturity date comparable to the CODES and (ii) 0.40% per
annum, but in no event may the rate of contingent interest exceed a per annum
rate of 0.50%, in each case based on the outstanding principal amount of the
CODES. Contingent interest will be computed on the basis of a 360-day year
comprised of twelve 30-day months.

     Upon determination that holders of CODES will be entitled to receive
contingent interest during any relevant six-month period, on or prior to the
start of the relevant six-month period, we will issue a press release and
publish information with respect to any contingent interest on our website.

     We will pay contingent interest, if any, in the same manner as we will pay
interest described above under "-- Interest," and your obligations in respect
of the payment of contingent interest in connection with the conversion of any
CODES will also be the same as described above under "-- Interest."


CONVERSION RIGHTS

 General

     You may convert any outstanding CODES (or portions of outstanding CODES)
into our common stock, initially at the conversion price of $107.625 per share
(equal to a conversion rate of 9.2915 shares per $1,000 principal amount of
CODES) under the circumstances summarized below. The conversion price is,
however, subject to adjustment as described below. We will not issue fractional
shares of common stock upon conversion of CODES. Instead, we will pay a cash
adjustment based upon the closing sale price of our common stock on the
business day immediately preceding the conversion date. You may convert CODES
only in denominations of $1,000 and whole multiples of $1,000.

     Holders may surrender CODES for conversion into our common stock prior to
the stated maturity only under the following circumstances:

     o during any conversion period, as described below, if the sale price of
       our common stock (as described above under "-- Interest Rate
       Adjustments") for at least 20 trading days in the 30 consecutive
       trading-day period ending on the first day of the conversion period was
       more than 120% of the conversion price on that thirtieth trading day;

     o during the five business-day period following any 10 consecutive
       trading-day period in which the average of the trading prices (as
       described below under "-- Conversion Rights -- Conversion Upon
       Satisfaction of Market Price Conditions") for the CODES for that 10
       trading-day period was less than 105% of the average conversion value, as
       described below, for the CODES during that period;

     o during any period in which the credit rating assigned to the CODES by
       either Moody's or Standard & Poor's is lower than B3 or B-, respectively,
       or in which the credit rating assigned to the CODES is suspended or
       withdrawn by either rating agency or in which neither rating agency
       continues to rate the CODES or provide rating services or coverage to L-3
       Holdings;

     o if we have called the CODES for redemption; or



                                       34


     o upon the occurrence of the corporate transactions summarized below.

     If you have exercised your right to require us to repurchase your CODES as
described under "-- Repurchase at Option of Holders," you may convert your
CODES into our common stock only if you withdraw your notice of exercise and
convert your CODES prior to the close of business on the business day
immediately preceding the applicable repurchase date.

 Conversion Upon Satisfaction of Market Price Conditions

     A holder may convert its CODES into our common stock during any conversion
period if the sale price of our common stock for at least 20 consecutive
trading days in the 30 trading-day period ending on the first day of the
conversion period exceeds 120% of the conversion price on that thirtieth
trading day. A conversion period will be the period from and including the
thirtieth trading day in a fiscal quarter to, but not including, the thirtieth
trading day in the immediately following fiscal quarter.

     A holder also may convert its CODES into our common stock during the five
business-day period following any 10 consecutive trading-day period in which
the average of the trading prices for the CODES for that 10 trading-day period
was less than 105% of the average conversion value for the CODES during that
period.

     "Conversion value" is equal to the product of the sale price for our
common stock on a given day multiplied by the then current conversion rate,
which is the number of shares of common stock into which each CODES is then
convertible.

     The "trading price" of the CODES on any date of determination means the
average of the secondary market bid quotations per CODES obtained by us or the
calculation agent for $10,000,000 principal amount of the CODES at
approximately 3:30 p.m., New York City time, on such determination date from
three independent nationally recognized securities dealers we select, provided
that if at least three such bids cannot reasonably be obtained by us or the
calculation agent, but two such bids are obtained, then the average of the two
bids shall be used, and if only one such bid can reasonably be obtained by us
or the calculation agent, this one bid shall be used. If either we or the
calculation agent cannot reasonably obtain at least one bid for $10,000,000
principal amount of the CODES from a nationally recognized securities dealer or
in our reasonable judgment, the bid quotations are not indicative of the
secondary market value of the CODES, then the trading price of the CODES will
equal (1) the then-applicable conversion rate of the CODES multiplied by (2)
the sale price of our common stock on such determination date.

 Conversion Upon Credit Rating Event

     A holder may convert any of its CODES during any period in which the
credit ratings assigned to the CODES by either Moody's or Standard & Poor's is
lower than B3 or B-, respectively, or in which the credit rating assigned to
the CODES is suspended or withdrawn by either rating agency or in which neither
rating agency continues to rate the CODES or provide ratings services or
coverage to L-3 Holdings.

 Conversion Upon Notice of Redemption

     A holder may surrender for conversion any CODES that we elect to call for
redemption at any time prior to the close of business on the day that is two
business days prior to the redemption date, even if the CODES are not otherwise
convertible at that time. If a holder already has delivered a purchase notice
or a change of control purchase notice with respect to a CODES, however, the
holder may not surrender that CODES for conversion until the holder has
withdrawn the notice in accordance with the indenture.

 Conversion Upon Specified Corporate Transactions

     If:

     o we distribute to all holders of our common stock certain rights entitling
       them to purchase, for a period expiring within 60 days of the date of
       distribution, common stock at less than the sale price of the common
       stock at the time of the announcement of such distribution;


                                       35


     o we elect to distribute to all holders of our common stock cash or other
       assets, debt securities or certain rights to purchase our securities,
       which distribution has a per share value exceeding 10% of the sale price
       of the common stock on the day preceding the declaration date for the
       distribution; or

     o a Change of Control occurs but holders of CODES do not have the right to
       require us to repurchase their CODES as a result of such Change of
       Control because either (1) the trading price of our common stock for a
       specified period prior to such Change of Control exceeds a specified
       level or (2) because the consideration received in such Change of Control
       consists of capital stock that is freely tradeable and the CODES become
       convertible into that capital stock (each as more fully described under
       "Repurchase at Option of Holders -- Change of Control"),

then we must notify the holders of CODES at least 20 days prior to the
ex-dividend date for the distribution or within 30 days of the occurrence of
the Change of Control, as the case may be. Once we have given that notice,
holders may convert their CODES at any time until either (1) the earlier of
close of business on the business day prior to the ex-dividend date and our
announcement that the distribution will not take place, in the case of a
distribution, or (2) within 30 days of the change of control notice, in the
case of a Change of Control. In the case of a distribution, no adjustment to
the ability of a holder of CODES to convert will be made if the holder
participates or will participate in the distribution without conversion.

     In addition, if we are party to a consolidation, merger or binding share
exchange pursuant to which our common stock will be converted into cash,
securities or other property, a holder may convert CODES at any time from and
after the date which is 15 days prior to the anticipated effective date of the
transaction until 15 days after the effective date of the transaction. If we
are a party to a consolidation, merger or binding share exchange pursuant to
which our common stock is converted into cash, securities or other property,
then at the effective time of the transaction, the right to convert a CODES
into common stock will be changed into a right to convert the CODES into the
kind and amount of cash, securities or other property which the holder would
have received if the holder had converted such CODES immediately prior to the
transaction. If the transaction also constitutes a Change of Control, the
holder can require us to repurchase all or a portion of its CODES as described
under "-- Repurchase at Option of Holders -- Change of Control."

 Conversion Procedures

     Except as provided below, if you convert your CODES into our common stock
on any day other than an interest payment date, you will not receive any
interest, including contingent interest, that has accrued on those CODES. By
delivering to the holder the number of shares issuable upon conversion,
determined by dividing the principal amount of the CODES being converted by the
conversion price, together with a cash payment, if any, in lieu of fractional
shares, we will satisfy our obligation with respect to the CODES. That is,
accrued but unpaid interest will be deemed to be paid in full rather than
canceled, extinguished or forfeited. If you convert after a record date for an
interest payment but prior to the corresponding interest payment date, you will
receive on the interest payment date interest accrued and paid on the converted
CODES, notwithstanding the conversion of such CODES prior to the interest
payment date, because you will have been the holder of record on the
corresponding record date. However, at the time you surrender such CODES for
conversion, you must pay us an amount equal to the interest that will be paid
on the CODES being converted on the interest payment date. However, the
preceding sentence does not apply to CODES that are converted after being
called by us for redemption. Accordingly, if we elect to call your CODES for
redemption on a date that is after a record date for an interest payment but
prior to the corresponding interest payment date, and prior to the redemption
date you choose to convert your CODES, you will not be required to pay us at
the time you surrender such CODES for conversion the amount of interest on such
CODES you will receive on the date that has been fixed for redemption. In
addition and notwithstanding the foregoing, upon conversion of any CODES on or
after October 24, 2004 and prior to March 15, 2005, we will pay to the holder
of such CODES at the time of such conversion (unless that conversion takes
place after March 1, 2005, in which case the payment will be made on the
interest payment date) all unpaid interest, including contingent interest,
accrued to October 24, 2004, if any, on the CODES so converted, regardless of
whether such converted CODES have been called for redemption.


                                       36


     You will not be required to pay any taxes or duties relating to the
issuance or delivery of our common stock if you exercise your conversion
rights, but you will be required to pay any tax or duty which may be payable
relating to any transfer involved in the issuance or delivery of the common
stock in a name other than yours. Certificates representing shares of common
stock will be issued or delivered only after all applicable taxes and duties,
if any, payable by you have been paid.

     To convert interests in a global CODES, you must deliver to DTC the
appropriate instruction form for conversion pursuant to DTC's conversion
program. To convert a definitive CODES, you must:

     o complete the conversion notice on the back of the CODES (or a facsimile
       thereof);

     o deliver the completed conversion notice and the CODES to be converted to
       the specified office of the conversion agent;

     o pay all funds required, if any, relating to interest on the CODES to be
       converted to which you are not entitled, as described in the second
       preceding paragraph; and

     o pay all taxes or duties, if any, as described in the preceding paragraph.

     The conversion date will be the date on which all of the foregoing
requirements have been satisfied. The CODES will be deemed to have been
converted immediately prior to the close of business on the conversion date. A
certificate for the number of shares of common stock into which the CODES are
converted, and cash in lieu of any fractional shares, will be delivered as soon
as practicable on or after the conversion date.

 Conversion Price Adjustments

     We will adjust the initial conversion price for certain events, including:

     o issuances of our common stock as a dividend or distribution on our common
       stock;

     o certain subdivisions and combinations of our common stock;

     o issuances to all holders of our common stock of certain rights or
       warrants to purchase our common stock (or securities convertible into our
       common stock) at less than (or having a conversion price per share less
       than) the Current Market Price of our common stock (Current Market Price
       is based upon the sale price during the prior 10-day period);

     o distributions to all holders of our common stock of shares of our capital
       stock (other than our common stock), evidences of our indebtedness or
       assets (including securities, but excluding:

       o the rights and warrants referred to in the third bullet point of this
         paragraph;

       o any dividends and distributions in connection with a reclassification,
         change, consolidation, merger, combination, sale or conveyance
         resulting in a change in the conversion consideration pursuant to the
         second succeeding paragraph; or

       o any dividends or distributions paid exclusively in cash);

     o distributions consisting exclusively of cash to all holders of our common
       stock to the extent that such distributions, combined together with:

       o all other such all-cash distributions made within the preceding 12
         months for which no adjustment has been made; plus

       o any cash and the fair market value of other consideration paid for
         any tender offers by us or any of our subsidiaries for our common
         stock expiring within the preceding 12 months for which no adjustment
         has been made,

       exceeds 10% of our Market Capitalization on the record date for such
       distribution (Market Capitalization is the product of the then Current
       Market Price of our common stock times the number of shares of our common
       stock then outstanding); and

     o purchases of our common stock pursuant to a tender offer made by us or
       any of our subsidiaries to the extent that the same involves an aggregate
       consideration that, together with:


                                       37


     o any cash and the fair market value of any other consideration paid in any
       other tender offer by us or any of our subsidiaries for our common stock
       expiring within the 12 months preceding such tender offer for which no
       adjustment has been made; plus

     o the aggregate amount of any all-cash distributions referred to in the
       preceding bullet point to all holders of our common stock within 12
       months preceding the expiration of tender offer for which no adjustments
       have been made,

       exceeds 10% of our Market Capitalization on the expiration of such
tender offer.

     We will not make an adjustment in the conversion price unless the
adjustment would require a change of at least 1% in the conversion price then
in effect. We will carry forward and take into account in any subsequent
adjustment any adjustment that would otherwise be required to be made. Except
as stated above, we will not adjust the conversion price for the issuance of
our common stock or any securities convertible into or exchangeable for our
common stock or carrying the right to purchase any of the foregoing.

     If we:

     o reclassify or change our common stock (other than changes resulting from
       a subdivision or combination); or

     o consolidate or combine with or merge with or into any person or sell or
       convey to another person all or substantially all of our property and
       assets,

and the holders of our common stock receive stock, other securities or other
property or assets (including cash or any combination thereof) with respect to
or in exchange for their common stock, the holders of the CODES may thereafter
convert the CODES into the consideration they would have received if they had
converted their CODES immediately prior to such reclassification, change,
consolidation, combination, merger, sale or conveyance. We may not become a
party to any such transaction unless its terms are consistent with the
foregoing.

     In the event that we distribute shares of capital stock of a subsidiary of
ours, the conversion rate will be adjusted, if at all, based on the market
value of the subsidiary stock so distributed relative to the market value of
our common stock, in each case over a measurement period following the
distribution.

     In the event we elect to make a distribution described in the third or
fourth bullet points of the first paragraph of this subsection "-- Conversion
Price Adjustment," which, in the case of the fourth bullet, has a per share
value equal to more than 10% of the sale price of our shares of common stock on
the day preceding the declaration date for the distribution, then, if the
distribution would also trigger a conversion right under "-- Conversion Upon
Specified Corporate Transaction," or if the CODES are otherwise convertible, we
will be required to give notice to the holders of CODES at least 20 days prior
to the ex-dividend date for the distribution and, upon the giving of notice,
the CODES may be surrendered for conversion at any time until the close of
business on the business day prior to the ex-dividend date or until we announce
that the distribution will not take place. No adjustment to the conversion
price or the ability of a holder of a CODES to convert will be made if the
holder will otherwise participate in the distribution without conversion or in
certain other cases.

     If a taxable distribution to holders of our common stock or other
transaction occurs that results in any adjustment of the conversion price, you
may, in certain circumstances, be deemed to have received a distribution
subject to U.S. income tax as a dividend. In certain other circumstances, the
absence of an adjustment may result in a taxable dividend to the holders of our
common stock. See "Certain United States Federal Income Tax Consequences."

     We may from time to time, to the extent permitted by law, reduce the
conversion price of the CODES by any amount for any period of at least 20 days.
In that case, we will give at least 15 days' notice of such decrease. We may
make such reductions in the conversion price, in addition to those set


                                       38


forth above, as our board of directors deems advisable to avoid or diminish any
income tax to holders of our common stock resulting from any dividend or
distribution of stock (or rights to acquire stock) or from any event treated as
such for income tax purposes.


OPTIONAL REDEMPTION BY L-3 HOLDINGS

 Optional Redemption

     We may not redeem the CODES in whole or in part at any time prior to
October 24, 2004. At any time on or after October 24, 2004, we may redeem some
or all of the CODES on at least 20 but not more than 60 days' notice, at the
following redemption prices (expressed in percentages of the principal amount)
and on or after the following dates:



                                     REDEMPTION
DURING THE PERIODS COMMENCING           PRICE
-----------------------------        ----------
                                  
October 24, 2004 ...........           102.0%
September 15, 2005 .........           101.0%
September 15, 2006 .........           100.0%


     In addition, we will pay interest, including contingent interest, on the
CODES being redeemed, including those CODES which are converted into our common
stock after the date the notice of the redemption is mailed and prior to the
redemption date. This interest will include interest accrued and unpaid to, but
excluding, the redemption date. If the redemption date is an interest payment
date, we will pay the interest to the holder of record on the corresponding
record date, which may or may not be the same person to whom we will pay the
redemption price. No accrued interest will be paid on CODES that are converted
into our common stock, except CODES that are called for redemption on a date
that is after a record date but prior to the corresponding interest payment
date if those CODES are converted into common stock after the record date;
provided, however, that you will be entitled to interest accrued for the period
beginning September 15, 2004 through October 23, 2004 if you convert subsequent
to October 23, 2004.

 Partial Redemption

     If we do not redeem all of the CODES, the trustee will select the CODES to
be redeemed in principal amounts of $1,000 or whole multiples of $1,000 by lot
or on a pro rata basis. If any CODES are to be redeemed in part only, we will
issue a new CODES in principal amount equal to the unredeemed principal portion
thereof. If a portion of your CODES is selected for partial redemption and you
convert a portion of your CODES, the converted portion will be deemed to be
taken from the portion selected for redemption.


REPURCHASE AT OPTION OF HOLDERS -- CHANGE OF CONTROL

     If a Change of Control occurs, you will have the right to require us to
repurchase all of your CODES not previously called for redemption, or any
portion of those CODES that is equal to $1,000 or a whole multiple of $1,000.
The repurchase price is equal to 100% of the principal amount of the CODES to
be repurchased. We will also pay interest, including contingent interest,
accrued and unpaid to, but excluding, the repurchase date.

     Instead of paying the repurchase price in cash, we may pay the repurchase
price in common stock. In such event, the number of shares of common stock a
holder will receive will equal the repurchase price divided by 95% of the
average of the closing sale prices of our common stock for the five trading
days immediately preceding and including the third trading day prior to the
repurchase date. However, we may not pay in common stock unless we satisfy
certain conditions prior to the repurchase date as provided in the indenture.

     Within 30 days after the occurrence of a Change of Control, we are
required to give you notice of the occurrence of the Change of Control and of
your resulting repurchase right. The repurchase date is no earlier than 30 days
and no later than 60 days after the date we give notice of a Change of


                                       39


Control. To exercise the repurchase right, you must deliver prior to the close
of business on the business day immediately preceding the repurchase date,
written notice to the trustee of your exercise of your repurchase right,
together with the CODES with respect to which your right is being exercised.
You may withdraw this notice by delivering to the paying agent a notice of
withdrawal prior to the close of business on the business day immediately
preceding the repurchase date.

     The indenture will provide that, prior to mailing a Change of Control
notice, but in any event within 90 days following a Change of Control, L-3
Holdings will either repay all outstanding Senior Debt or offer to repay all
Senior Debt and terminate all commitments thereunder of each lender who has
accepted such offer or obtain the requisite consents, if any, under all
agreements governing outstanding Senior Debt to permit the repurchase of CODES
required by this covenant. L-3 Holdings will publicly announce the results of
the Change of Control offer on or as soon as practicable after it closes.

     A "Change of Control" will be deemed to have occurred at such time after
the original issuance of the CODES when any of the following has occurred:

     o the sale, lease, transfer, conveyance or other disposition (other than by
       way of merger or consolidation), in one or a series of related
       transactions, of all or substantially all of the assets of L-3 Holdings
       and its subsidiaries (other than the Excluded Subsidiaries (as defined
       below)) taken as a whole to any "person" (as such term is used in Section
       13(d)(3) of the Exchange Act) other than the Principals or their Related
       Parties;

     o the consummation of any transaction (including, without limitation, any
       merger or consolidation) the result of which is that any "person" (as
       defined above), other than the Principals and their Related Parties,
       becomes the "beneficial owner," directly or indirectly, of more than 50%
       of the Voting Stock of L-3 Holdings (measured by voting power rather than
       number of shares);

     o the first day on which a majority of the members of the board of
       directors of L-3 Holdings are not Continuing Directors; or

     o the consolidation or merger of L-3 Holdings with or into any other
       person, any merger of another person into L-3 Holdings, or any
       conveyance, transfer, sale, lease or other disposition of all or
       substantially all of our properties and assets to another person, other
       than:

       (1) any transaction:

           o that does not result in any reclassification, conversion, exchange
             or cancellation of outstanding shares of our capital stock; and

           o pursuant to which holders of our capital stock immediately prior to
             such transaction have the entitlement to exercise, directly or
             indirectly, 50% or more of the total voting power of all shares of
             our capital stock entitled to vote generally in elections of
             directors of the continuing or surviving person immediately after
             giving effect to such issuance; and

       (2) any merger solely for the purpose of changing our jurisdiction of
           incorporation and resulting in a reclassification, conversion or
           exchange of outstanding shares of common stock solely into shares of
           common stock of the surviving entity.

     However, a Change of Control will be deemed not to have occurred if:

     o the closing sale price per share of our common stock for any five trading
       days within:

       o the period of 10 consecutive trading days ending immediately after the
         later of the Change of Control or the public announcement of the Change
         of Control, in the case of a Change of Control under the first bullet
         point above; or

       o the period of 10 consecutive trading days ending immediately before the
         Change of Control, in the case of a Change of Control under the second
         bullet point above,


                                       40


         equals or exceeds 110% of the conversion price of the CODES in effect
         on each such trading day; or

       o at least 90% of the consideration in the transaction or transactions
         constituting a Change of Control consists of shares of common stock
         traded or to be traded immediately following such Change of Control on
         a national securities exchange or the Nasdaq National Market and, as a
         result of the transaction or transactions, the CODES become convertible
         solely into such common stock (and any rights attached thereto).

     Beneficial ownership shall be determined in accordance with Rule 13d-3
promulgated by the SEC under the Exchange Act. The term "person" includes any
syndicate or group which would be deemed to be a "person" under Section
13(d)(3) of the Exchange Act.

     "Continuing Directors" means, as of any date of determination, any member
of the board of directors of L-3 Holdings who:

     o was a member of the board of directors on May 22, 1998; or

     o was nominated for election or elected to the board of directors with the
       approval of a majority of the Continuing Directors who were members of
       the board at the time of new director's nomination or election.

     "Excluded Subsidiaries" means:

     o any domestic subsidiary of L-3 Holdings that is not a Guarantor; and

     o foreign subsidiaries of L-3 Holdings and L-3 Communications that have
       been designated as, or, if the indentures governing the Outstanding
       Senior Subordinated Notes are no longer in effect, could have been
       designated as "Unrestricted Subsidiaries" pursuant to the terms of the
       indentures governing any of the Outstanding Senior Subordinated Notes of
       L-3 Communications as the same are in effect on the date of the closing
       of this offering (whether or not those indentures are subsequently
       amended, waived, modified or terminated or expire and whether or not any
       of those CODES continue to be outstanding).

     "Principals" means Lehman Brothers Holdings Inc. and any of its
affiliates, Lockheed Martin, Frank C. Lanza and Robert V. LaPenta.

     "Related Party" with respect to any Principal means:

     o any controlling stockholder, 50% (or more) owned subsidiary, or spouse or
       immediate family member (in the case of an individual) of such Principal;
       or

     o any trust, corporation, partnership or other entity, the beneficiaries,
       stockholders, partners, owners or Persons beneficially holding a more
       than 50% controlling interest of which consist of such Principal and/or
       such other Persons referred to above.

     "Voting Stock" means the capital stock that is entitled to vote in the
election of the board of directors at that time.

     Rule 13e-4 under the Exchange Act, requires the dissemination of certain
information to security holders if an L-3 Holdings tender offer occurs and may
apply if the repurchase option becomes available to holders of the CODES. We
will comply with this rule to the extent applicable at that time.

     We may, to the extent permitted by applicable law and our Senior Debt, at
any time purchase the CODES in the open market or by tender at any price or by
private agreement. Any CODES so purchased by us may, to the extent permitted by
applicable law, be reissued or resold or may be surrendered to the trustee for
cancellation. Any CODES surrendered to the trustee may not be reissued or
resold and will be canceled promptly.

     The foregoing provisions would not necessarily protect holders of the
CODES if highly leveraged or other transactions involving us occur that may
adversely affect holders.


                                       41


     Our ability to repurchase CODES upon the occurrence of a Change in Control
is subject to important limitations. The occurrence of a Change of Control
could cause an event of default under, or be prohibited or limited by, the
terms of our existing or future Senior Debt. As a result, any repurchase of the
CODES could, absent a waiver, be prohibited under the subordination provisions
of the indenture until the Senior Debt is paid in full. Further, we cannot
assure you that we would have the financial resources, or would be able to
arrange financing, to pay the repurchase price for all the CODES that might be
delivered by holders of CODES seeking to exercise the repurchase right. Any
failure by us to repurchase the CODES when required following a Change of
Control would result in an event of default under the indenture, whether or not
such repurchase is permitted by the subordination provisions of the indenture.
Any such default may, in turn, cause a default under our existing or future
Senior Debt. See "-- Subordination" below.


SUBSIDIARY GUARANTEES

     The Guarantors have jointly and severally guaranteed L-3 Holdings'
obligations under the CODES. Each guarantee is subordinated to the prior
payment in full of all Senior Debt of that Guarantor. The obligations of each
Guarantor under its guarantee are limited as necessary to prevent that
guarantee from constituting a fraudulent conveyance under applicable law. See
"Risk Factors -- The Guarantees may be unenforceable due to fraudulent
conveyance statutes, accordingly, you could have no claim against the
Guarantors."

     Guarantors may, without the consent of the holders of CODES, consolidate
with, merge with or into or transfer all or substantially all of their assets
to any other corporation organized under the laws of the United States or any
of its political subdivisions provided that:

     o the surviving corporation assumes all of the Guarantor's obligations
       under the indenture;

     o at the time of such transaction, no event of default, and no event which,
       after notice or lapse of time, would become an event of default, shall
       have happened and be continuing; and

     o certain other conditions are met.

     The Guarantee of a Guarantor will be released:

     o in connection with any sale or other disposition of all or substantially
       all of the assets of that Guarantor (including by way of merger or
       consolidation); or

     o in connection with any sale of all of the capital stock of a Guarantor.

     The indenture provides that if L-3 Holdings or any of its subsidiaries
acquires or creates a subsidiary (other than a foreign subsidiary) after the
date of this offering, then such subsidiary will execute a guarantee in
accordance with the terms of the indenture; provided, however, that no domestic
subsidiary shall be required to guarantee these CODES if that subsidiary would
not have had to become a guarantor of any of the Outstanding Senior
Subordinated Notes of L-3 Communications pursuant to the terms of the
indentures governing those Notes as the same are in effect on the date of the
closing of this offering (whether or not those indentures are subsequently
amended, waived, modified or terminated or expire and whether or not any of
those Notes continue to be outstanding).


SUBORDINATION

     The payment of principal of, premium and additional amounts, if any, and
interest, including contingent interest, on the CODES is subordinated in right
of payment, as set forth in the indenture, to the prior payment in full of all
Senior Debt, whether outstanding on the issue date or thereafter incurred.

     Upon any distribution to creditors of L-3 Holdings in a liquidation or
dissolution of L-3 Holdings or in a bankruptcy, reorganization, insolvency,
receivership or similar proceeding relating to L-3 Holdings or its property, an
assignment for the benefit of creditors or any marshalling of L-3 Holdings'


                                       42


assets and liabilities, the holders of Senior Debt will be entitled to receive
payment in full in cash of all obligations due in respect of such Senior Debt
(including interest after the commencement of any such proceeding at the rate
specified in the applicable Senior Debt, whether or not an allowable claim in
any such proceeding) before the holders of CODES will be entitled to receive
any payment with respect to the CODES, and until all obligations with respect
to Senior Debt are paid in full, any distribution to which the holders of CODES
would be entitled shall be made to the holders of Senior Debt.

     L-3 Holdings also may not make any payment upon or in respect of the CODES
if:

     o a default in the payment of the principal of, premium, if any, or
       interest on Designated Senior Debt occurs and is continuing; or

     o any other default occurs and is continuing with respect to Designated
       Senior Debt that permits holders of the Designated Senior Debt as to
       which such default relates to accelerate its maturity (or that would
       permit such holders to accelerate with the giving of notice or the
       passage of time or both) and the trustee receives a notice of such
       default (a "Payment Blockage Notice") from L-3 Holdings or the holders of
       any Designated Senior Debt.

     Payments on the CODES may and shall be resumed:

     o in the case of a payment default, upon the date on which such default is
       cured or waived; and

     o in case of a nonpayment default, the earlier of the date on which such
       nonpayment default is cured or waived or 179 days after the date on which
       the applicable Payment Blockage Notice is received, unless the maturity
       of any Designated Senior Debt has been accelerated.

     No new period of payment blockage may be commenced unless and until:

     o 360 days have elapsed since the effectiveness of the immediately prior
       Payment Blockage Notice; and

     o all scheduled payments of principal, premium and additional amounts, if
       any, and interest (including contingent interest) on the CODES that have
       come due have been paid in full in cash.

     No nonpayment default that existed or was continuing on the date of
delivery of any Payment Blockage Notice to the trustee shall be, or be made,
the basis for a subsequent Payment Blockage Notice unless such default shall
have been waived for a period of not less than 90 days.

     The indenture further requires that L-3 Holdings promptly notify holders
of Senior Debt if payment of the CODES is accelerated because of an Event of
Default.

     As a result of the subordination provisions described above, in the event
of a liquidation or insolvency, holders of CODES may recover less ratably than
creditors of L-3 Holdings who are holders of Senior Debt. On a pro forma basis,
after giving effect to the offering, there would have been no Senior Debt
outstanding at September 30, 2001; however, as of September 30, 2001, L-3
Communications had the ability to borrow up to $499.5 million (after reductions
for outstanding letters of credit of $100.5 million) under its bank credit
facilities, which if borrowed would be Senior Debt.

     "Senior Debt" means:

     o all Indebtedness of L-3 Holdings outstanding under credit facilities and
       all hedging obligations with respect thereto;

     o any other Indebtedness permitted to be incurred by L-3 Holdings under the
       terms of the indenture, unless the instrument under which such
       Indebtedness is incurred expressly provides that it is on a parity with
       or subordinated in right of payment to the CODES; and

     o all principal, premium (if any), interest (including interest accruing on
       or after the filing of any petition in bankruptcy or for reorganization,
       whether or not a claim for post-filing interest is


                                       43


       allowed in such proceeding), penalties, fees, charges, expenses,
       indemnification, reimbursement obligations, damages, guarantees and other
       liabilities or amounts payable under the documentation governing any
       indebtedness referred to above.

Notwithstanding anything to the contrary in the foregoing, Senior Debt will not
include:

     o L-3 Holdings' outstanding 5 1/4% Convertible Senior Subordinated Notes
       due 2009;

     o any liability for federal, state, local or other taxes owed or owing by
       L-3 Holdings;

     o any Indebtedness of L-3 Holdings to any of its subsidiaries or other
       affiliates;

     o any trade payables; or

     o any indebtedness that is incurred in violation of the Indenture.

     "Indebtedness" means, with respect to any person, any indebtedness of such
person, whether or not contingent, in respect of borrowed money or evidenced by
bonds, notes, debentures or similar instruments or letters of credit (or
reimbursement agreements in respect thereof) or banker's acceptances or
representing capital lease obligations or the balance deferred and unpaid of
the purchase price of any property or representing any hedging obligations,
except any such balance that constitutes an accrued expense or trade payable,
if and to the extent any of the foregoing indebtedness (other than letters of
credit and hedging obligations) would appear as a liability upon a balance
sheet of such person prepared in accordance with GAAP, as well as all
indebtedness of others secured by a lien on any assets of such person (whether
or not such indebtedness is assumed by such person) and, to the extent not
otherwise included, the guarantee by such person of any indebtedness of any
other person. The amount of any Indebtedness outstanding as of any date shall
be:

     o the accreted value thereof, in the case of any Indebtedness that does not
       require current payments of interest; and

     o the principal amount thereof, together with any interest thereon that is
       more than 30 days past due, in the case of any other Indebtedness.

     "Designated Senior Debt" means (1) any Senior Debt outstanding under any
credit facility and (2) any other Senior Debt permitted under the indenture,
the principal amount of which is $25.0 million or more and that has been
designated by L-3 Holdings as "Designated Senior Debt." The indenture does not
restrict the creation of Senior Debt or any other indebtedness in the future.
For information concerning our potential incurrence of additional Senior Debt,
see "Management's Discussion of and Analysis of Financial Condition and Results
of Operations -- Liquidity and Capital Resources," incorporated herein by
reference to L-3 Holdings' annual report on Form 10-K for the year ended
December 31, 2000.

     We are obligated to pay reasonable compensation to the trustee and to
indemnify the trustee against any losses, liabilities or expenses incurred by
it in connection with its duties relating to the CODES. The trustee's claims
for such payments will be senior to those of holders of the CODES in respect of
all funds collected or held by the trustee.


SUBORDINATION OF SUBSIDIARY GUARANTEES

     The guarantees of the Guarantors are subordinated in right of payment to
all Senior Debt of the Guarantors to the same extent that the CODES are
subordinated to the Senior Debt of L-3 Holdings. "Senior Debt of a Guarantor"
means:

     (1) all Indebtedness of the Guarantors outstanding under credit
         facilities and all hedging obligations with respect thereto;

     (2) any other Indebtedness permitted to be incurred by the Guarantors
         under the terms of the indenture, unless the instrument under which
         such Indebtedness is incurred expressly provides that it is on a
         parity with or subordinated in right of payment to the CODES; and


                                       44


     (3) all principal, premium (if any), interest (including interest
         accruing on or after the filing of any petition in bankruptcy or for
         reorganization, whether or not a claim for post-filing interest is
         allowed in such proceeding), penalties, fees, charges, expenses,
         indemnification, reimbursement obligations, damages, guarantees and
         other liabilities or amounts payable under the documentation governing
         any Indebtedness referred to above. Notwithstanding anything to the
         contrary in the foregoing, the term "Senior Debt of a Guarantor" does
         not include:

         (1) any liability for federal, state, local or other taxes owed or
             owing by that Guarantor;

         (2) any Indebtedness of that Guarantor to any of its subsidiaries or
             other affiliates;

         (3) any trade payables; or

         (4) any obligations with respect to the Outstanding Senior
             Subordinated Notes of L-3 Communications (and the related
             guarantees).


ANTILAYERING PROVISION

     The indenture provides that (i) L-3 Holdings will not incur, create,
issue, assume, guarantee or otherwise become liable for any Indebtedness that
is subordinate or junior in right of payment to any Senior Debt and senior in
any respect in right of payment to the CODES, and (ii) no Guarantor will incur,
create, issue, assume, guarantee or otherwise become liable for any
Indebtedness that is subordinate or junior in right of payment to any Senior
Debt of a Guarantor and senior in any respect in right of payment to any of the
Subsidiary Guarantees.


EVENTS OF DEFAULT

     Each of the following constitutes an event of default under the indenture:

     (1) default for 30 days in the payment when due of interest, including
         contingent interest, or additional amounts on the CODES, whether or not
         prohibited by the subordination provisions of the indenture;

     (2) default in payment when due of the principal of or premium, if any, on
         the CODES, whether or not prohibited by the subordination provisions of
         the indenture;

     (3) failure by L-3 Holdings for 60 days after notice to comply with any of
         its other agreements in the indenture or the CODES;

     (4) a default under any mortgage, indenture or instrument under which there
         may be issued or by which there may be secured or evidenced any
         Indebtedness of L-3 Holdings or any of its subsidiaries (other than the
         Excluded Subsidiaries) for money borrowed (or the payment of which is
         guaranteed by L-3 Holdings or any of those subsidiaries) whether such
         Indebtedness or guarantee now exists, or is created after the date of
         the indenture, which default results in the acceleration of such
         Indebtedness prior to its express maturity and, in each case, the
         principal amount of any such Indebtedness, together with the principal
         amount of any other such Indebtedness the maturity of which has been so
         accelerated, aggregates $10.0 million or more;

     (5) failure by the Company or any of its subsidiaries (other than the
         Excluded Subsidiaries) to pay final judgments aggregating in excess of
         $10.0 million, which judgments are not paid, discharged or stayed for a
         period of 60 days;

     (6) certain events of bankruptcy, insolvency or reorganization with respect
         to L-3 Holdings or any subsidiary of L-3 Holdings (other than the
         Excluded Subsidiaries); and

     (7) except as permitted by the indenture, any Guarantee shall be held in
         any judicial proceeding to be unenforceable or invalid.

     The indenture provides that the trustee shall, within 90 days of the
occurrence of a default, give to the registered holders of the CODES notice of
all uncured defaults known to it, but the trustee


                                       45


shall be protected in withholding such notice if it, in good faith, determines
that the withholding of such notice is in the best interest of such registered
holders, except in the case of a default in the payment of the principal of, or
premium, if any, or interest on, any of the CODES when due or in the payment of
any redemption or repurchase obligation.

     If an event of default specified in clause (6) above occurs and is
continuing with respect to L-3 Holdings, then automatically the principal of
all the CODES and the interest thereon shall become immediately due and
payable. If any other event of default shall occur and be continuing (the
default not having been cured or waived as provided under "-- Modifications,
Amendments and Meetings" below), the trustee or the holders of at least 25% in
aggregate principal amount of the CODES then outstanding may declare the CODES
due and payable at their principal amount together with accrued interest, and
thereupon the trustee may, at its discretion, proceed to protect and enforce
the rights of the holders of CODES by appropriate judicial proceedings. Such
declaration may be rescinded or annulled either with the written consent of the
holders of a majority in aggregate principal amount of the CODES then
outstanding or a majority in aggregate principal amount of the CODES
represented at a meeting at which a quorum (as specified under "--
Modifications, Amendments and Meetings" below) is present, in each case upon
the conditions provided in the indenture.

     The indenture contains a provision entitling the trustee, subject to the
duty of the trustee during default to act with the required standard of care,
to be indemnified by the holders of CODES before proceeding to exercise any
right or power under the indenture at the request of such holders. The
indenture provides that the holders of a majority in aggregate principal amount
of the CODES then outstanding through their written consent, or the holders of
a majority in aggregate principal amount of the CODES then outstanding
represented at a meeting at which a quorum is present by a written resolution,
may direct the time, method and place of conducting any proceeding for any
remedy available to the trustee or exercising any trust or power conferred upon
the trustee.

     We are required to furnish annually to the trustee a statement as to the
fulfillment of our obligations under the indenture.


CONSOLIDATION, MERGER OR ASSUMPTION

     We may, without the consent of the holders of CODES, consolidate with,
merge with or into or transfer all or substantially all of our assets to any
other corporation organized under the laws of the United States or any of its
political subdivisions provided that:

     o the surviving corporation assumes all our obligations under the
       indenture;

     o at the time of such transaction, no event of default, and no event which,
       after notice or lapse of time, would become an event of default, shall
       have happened and be continuing; and

     o certain other conditions are met.


MODIFICATIONS, AMENDMENTS AND MEETINGS

 Changes Requiring Approval of Each Affected Holder

     The indenture (including the terms and conditions of the CODES and the
Guarantees) cannot be modified or amended without the written consent or the
affirmative vote of the holder of each CODES affected by such change to:

     o change the maturity of the principal of or any installment of interest
       (including contingent interest) or any payment of additional amounts, if
       any, on any CODES;

     o reduce the principal amount of, or any premium or interest (including
       contingent interest) or additional amounts, if any, on any CODES;

     o impair or adversely affect the conversion rights of any holder of CODES;

     o impair or adversely affect the rights of any holder of CODES with respect
       to the Guarantees;


                                       46


     o change the currency of payment of such CODES or interest thereon;

     o impair the right to institute suit for the enforcement of any payment on
       or with respect to any CODES;

     o modify our obligations to maintain an office or agency in New York City;

     o except as otherwise permitted or contemplated by provisions concerning
       corporate reorganizations, adversely affect the repurchase option of
       holders upon a Change of Control or the conversion rights of holders of
       the CODES;

     o modify the subordination provisions of the indenture in a manner adverse
       to the holders of CODES;

     o modify the redemption provisions of the indenture (other than the
       provisions of the indenture governing the repurchase of CODES upon the
       occurrence of a Change in Control) in a manner adverse to the holders of
       CODES;

     o reduce the percentage in aggregate principal amount of CODES outstanding
       necessary to modify or amend the indenture or to waive any past default;
       or

     o reduce the percentage in aggregate principal amount of CODES outstanding
       required for the adoption of a resolution or the quorum required at any
       meeting of holders of CODES at which a resolution is adopted.

 Changes Requiring Majority Approval

     The indenture (including the terms and conditions of the CODES and the
Guarantees) may be modified or amended either:

     o with the written consent of the holders of at least a majority in
       aggregate principal amount of the CODES at the time outstanding; or

     o by the adoption of a resolution at a meeting of holders by at least a
       majority in aggregate principal amount of the CODES represented at such
       meeting.

 Changes Requiring No Approval

     The indenture (including the terms and conditions of the CODES and the
Guarantees) may be modified or amended by us and the trustee, without the
consent of the holder of any CODES, for the purposes of, among other things:

     o adding to our covenants for the benefit of the holders of CODES;

     o surrendering any right or power conferred upon us;

     o providing for conversion rights of holders of CODES if any
       reclassification or change of our common stock or any consolidation,
       merger or sale of all or substantially all of our assets occurs;

     o providing for the assumption of our obligations to the holders of CODES
       in the case of a merger, consolidation, conveyance, transfer or lease;

     o reducing the conversion price, provided that the reduction will not
       adversely affect the interests of the holders of CODES;

     o complying with the requirements of the SEC in order to effect or maintain
       the qualification of the indenture under the Trust Indenture Act of 1939,
       as amended;

     o making any changes or modifications necessary in connection with the
       registration of the CODES under the Securities Act as contemplated in the
       registration rights agreement; provided that such change or modification
       does not, in the good faith opinion of our board of directors and the
       trustee, adversely affect the interests of the holders of CODES in any
       material respect;


                                       47


     o curing any ambiguity or correcting or supplementing any defective
       provision contained in the indenture; provided that such modification or
       amendment does not, in the good faith opinion of our board of directors
       and the trustee, adversely affect the interests of the holders of CODES
       in any material respect; or

     o adding or modifying any other provisions with respect to matters or
       questions arising under the indenture which we and the trustee may deem
       necessary or desirable and which will not adversely affect the interests
       of the holders of CODES.


MEETINGS

     The indenture contains provisions for convening meetings of the holders of
CODES to consider matters affecting their interests.

 Quorum

     The quorum at any meeting called to adopt a resolution will be persons
holding or representing a majority in aggregate principal amount of the CODES
at the time outstanding and, at any reconvened meeting adjourned for lack of a
quorum, 25% of the aggregate principal amount.


SATISFACTION AND DISCHARGE

     We may satisfy and discharge our obligations under the indenture while
CODES remain outstanding, subject to certain conditions, if:

     o all outstanding CODES will become due and payable at their scheduled
       maturity within one year; or

     o all outstanding CODES are scheduled for redemption within one year,

and, in either case, we have deposited with the trustee an amount sufficient to
pay and discharge all outstanding CODES on the date of their scheduled maturity
or the scheduled date of redemption.


GOVERNING LAW

     The indenture and the CODES will be governed by, and construed in
accordance with, the law of the State of New York.


INFORMATION CONCERNING THE TRUSTEE

     The Bank of New York, as trustee under the indenture, has been appointed
by us as paying agent, conversion agent, registrar and custodian with regard to
the CODES. EquiServe Trust Company, N.A. is the transfer agent and registrar
for our common stock. The trustee or its affiliates may from time to time in
the future provide banking and other services to us in the ordinary course of
their business.


CALCULATIONS IN RESPECT OF CODES

     We will be responsible for making many of the calculations called for
under the CODES. These calculations include, but are not limited to,
determination of the trading prices of the CODES and the sale price of our
common stock and amounts of contingent interest payments, if any, payable on
the CODES. We will make all these calculations in good faith and, absent
manifest error, our calculations will be final and binding on holders of CODES.
We will provide a schedule of our calculations to the trustee, and the trustee
is entitled to rely conclusively on the accuracy of our calculations without
independent verification.


REGISTRATION RIGHTS

     We and the Guarantors entered into a registration rights agreement with
the initial purchasers for the benefit of the holders of the CODES, the
Guarantees and the common stock issuable upon


                                       48


conversion of the CODES. Under the terms of that agreement, we have filed with
the SEC a registration statement, of which this prospectus forms a part,
covering resales by holders of the CODES, the guarantees and the common stock
issuable upon conversion of the CODES. Under the terms of the registration
rights agreement, we also agreed to use all commercially reasonable efforts to
cause the registration statement to become effective as promptly as is
practicable, but in no event later than 180 days after the date of issuance of
the CODES, and keep the registration statement effective until the earliest of:

     o two years after the last date of issuance of the CODES;

     o the date when the holders of the CODES and the common stock issuable upon
       conversion of the CODES are able to sell all such securities immediately
       without restriction pursuant to the volume limitation provisions of Rule
       144 under the Securities Act; and

     o the date when all of the CODES, the Guarantees and the common stock into
       which the CODES are convertible that are owned by the holders who
       complete and deliver in a timely manner the selling securityholder
       election and questionnaire described below are registered under the
       registration statement and disposed of in accordance with the
       registration statement.

     We will mail a notice of registration statement and selling securityholder
election and questionnaire to each holder to obtain certain information
regarding the holder for inclusion in the prospectus. To be named as selling
securityholders in the related prospectus at the time of effectiveness, holders
must complete and deliver the questionnaire within 20 business days of the date
of the questionnaire. Holders that do not complete and deliver a questionnaire
in a timely manner will not be named as selling securityholders in the
prospectus and therefore will not be permitted to sell any of their securities
pursuant to the registration statement.

     When we file the registration statement, we will:

     o provide to each holder for whom the registration statement was filed
       copies of the prospectus that is a part of the registration statement;

     o notify each such holder when the registration statement has become
       effective; and

     o take certain other actions as are required to permit unrestricted resales
       of the CODES and the common stock issuable upon conversion of the CODES.

     Each holder who sells securities pursuant to the registration statement
generally will be:

     o required to be named as a selling stockholder in the related prospectus;

     o required to deliver a prospectus to purchasers;

     o subject to certain of the civil liability provisions under the Securities
       Act in connection with the holder's sales; and

     o bound by the provisions of the registration rights agreement which are
       applicable to the holder (including certain indemnification rights and
       obligations).

     Each holder must notify us not later than three business days prior to any
proposed sale by that holder pursuant to the registration statement, of which
this prospectus forms a part. This notice will be effective for five business
days. We may suspend the holder's use of the prospectus for a reasonable period
not to exceed 45 days in any 90-day period, and not to exceed an aggregate of
90 days in any 360-day period, if:

     o the prospectus would, in our judgment, contain a material misstatement or
       omission as a result of an event that has occurred and is continuing; and

     o we reasonably determine that the disclosure of this material non-public
       information would have a material adverse effect on us and our
       subsidiaries taken as a whole.


                                       49




     However, if the disclosure relates to a previously undisclosed proposed or
pending material business transaction, the disclosure of which would impede our
ability to consummate such transaction, we may extend the suspension period
from 45 days to 60 days. Each holder, by its acceptance of a CODES, agrees to
hold any communication by us in response to a notice of a proposed sale in
confidence.

     Upon the initial sale of CODES or common stock issued upon conversion of
the CODES, each selling holder will be required to deliver a notice of such
sale in substantially the form attached to this prospectus to the trustee and
us. The notice will, among other things:

     o identify the sale as a transfer pursuant to the registration statement;

     o certify that the prospectus delivery requirements, if any, of the
       Securities Act have been complied with; and

     o certify that the selling holder and the aggregate principal amount of
       CODES or number of shares, as the case may be, owned by such holder are
       identified in the related prospectus in accordance with the applicable
       rules and regulations under the Securities Act.

     If,

     o we have not filed the registration statement with the SEC prior to or on
       the 90th day following the earliest date of original issuance of any of
       the CODES;

     o the registration statement has not been declared effective prior to or on
       the 180th day following the earliest date of original issuance of any of
       the CODES; or

     o the registration statement, of which this prospectus forms a part, ceases
       to be effective or fails to be usable and (1) we do not cure the
       registration statement within five business days by a post-effective
       amendment or a report filed pursuant to the Exchange Act or (2) if
       applicable, we do not terminate the suspension period, described in the
       preceding paragraph, by the 45th or 60th day, as the case may be (each, a
       "registration default,")

additional amounts will accrue on the CODES, from and including the day
following the registration default to but excluding the day on which the
registration default has been cured. Additional amounts will be paid
semiannually in arrears, with the first semiannual payment due on the first
interest payment date, as applicable, following the date on which such
additional amounts begin to accrue, and will accrue at a rate per year equal
to:

     o an additional 0.25% of the principal amount to and including the 90th day
       following such registration default; and

     o an additional 0.50% of the principal amount from and after the 91st day
       following such registration default.

In no event will additional amounts accrue at a rate per year exceeding 0.50%.
If a holder has converted some or all of its CODES into common stock, the
holder will be entitled to receive equivalent amounts based on the principal
amount of the CODES converted. A holder will not be entitled to additional
amounts unless it has provided all information requested by the questionnaire
prior to the deadline.

     The specific provisions relating to the registration described above are
contained in the registration rights agreement dated October 24, 2001 among us,
the guarantors and the initial purchasers.


FORM, DENOMINATION AND REGISTRATION

     Denomination and Registration. The CODES were issued in fully registered
form, without coupons, in denominations of $1,000 principal amount and whole
multiples of $1,000.

     Global CODES: Book-Entry Form. Except as provided below, all CODES sold in
this offering are evidenced by one or more global CODES (the "global CODES")
deposited with the trustee as custodian for DTC, and registered in the name of
Cede & Co. as DTC's nominee.


                                       50


     Record ownership of the global CODES may be transferred, in whole or in
part, only to another nominee of DTC or to a successor of DTC or its nominee,
except as set forth below. A purchaser of CODES may hold its interests in the
global CODES directly through DTC if such purchaser is a participant in DTC, or
indirectly through organizations which are direct DTC participants if such
purchaser is not a participant in DTC. Transfers between direct DTC
participants will be effected in the ordinary way in accordance with DTC's
rules and will be settled in same-day funds. Purchasers may also beneficially
own interests in the global CODES held by DTC through certain banks, brokers,
dealers, trust companies and other parties that clear through or maintain a
custodial relationship with a direct DTC participant, either directly or
indirectly.

     So long as Cede & Co., as nominee of DTC, is the registered owner of the
global CODES, Cede & Co. for all purposes will be considered the sole holder of
the global CODES. Except as provided below, owners of beneficial interests in
the global CODES:

     o will not be entitled to have certificates registered in their names;

     o will not receive or be entitled to receive physical delivery of
       certificates in definitive form; and

     o will not be considered holders of the global CODES.

The laws of some states require that certain persons take physical delivery of
securities in definitive form. Consequently, the ability of an owner of a
beneficial interest in a global CODES to transfer the beneficial interest in
the global CODES to such persons may be limited.

     We will wire, through the facilities of the trustee, payments of
principal, premium, if any, and interest payments on the global CODES to Cede &
Co., the nominee of DTC, as the registered owner of the global CODES. None of
L-3 Holdings, the trustee and any paying agent will have any responsibility or
be liable for paying amounts due on the global CODES to owners of beneficial
interests in the global CODES.

     It is DTC's current practice, upon receipt of any payment of principal of
and premium, if any, and interest on the global CODES, to credit participants'
accounts on the payment date in amounts proportionate to their respective
beneficial interests in the global CODES, as shown on the records of DTC,
unless DTC believes that it will not receive payment on the payment date.
Payments by DTC participants to owners of beneficial interests in global CODES
held through DTC participants will be the responsibility of DTC participants,
as is now the case with securities held for the accounts of customers
registered in "street name."

     Because of time zone differences, the securities accounts of a Euroclear
System ("Euroclear") or Clearstream Bank, societe anonyme ("Clearstream")
participant purchasing an interest in a global CODES from a participant in DTC
will be credited, and any such crediting will be reported to the relevant
Euroclear or Clearstream participant, during the securities settlement
processing day (which must be a business day for Euroclear or Clearstream)
immediately following the settlement date of DTC. Cash received in Euroclear or
Clearstream as a result of sales of interests in a global CODES by or through a
Euroclear or Clearstream participant to a participant in DTC will be received
with value on the settlement date of DTC but will be available in the relevant
Euroclear or Clearstream cash account only as of the business day for Euroclear
or Clearstream following DTC's settlement date.

     If you would like to convert your CODES into common stock pursuant to the
terms of the CODES, you should contact your broker or other direct or indirect
DTC participant to obtain information on procedures, including proper forms and
cut-off times, for submitting those requests.

     Because DTC can only act on behalf of DTC participants, who in turn act on
behalf of indirect DTC participants and other banks, your ability to pledge
your interest in the CODES represented by global CODES to persons or entities
that do not participate in the DTC system, or otherwise take actions in respect
of such interest, may be affected by the lack of a physical certificate.

     Neither L-3 Holdings nor the trustee (nor any registrar, paying agent or
conversion agent under the indenture) will have any responsibility for the
performance by DTC or direct or indirect DTC


                                       51


participants of their obligations under the rules and procedures governing
their operations. DTC has advised us that it will take any action permitted to
be taken by a holder of CODES, including, without limitation, the presentation
of CODES for conversion as described below, only at the direction of one or
more direct DTC participants to whose account with DTC interests in the global
CODES are credited and only for the principal amount of the CODES for which
directions have been given.

     DTC has advised us as follows: DTC is a limited purpose trust company
organized under the laws of the State of New York, a member of the Federal
Reserve System, a "clearing corporation" within the meaning of the Uniform
Commercial Code and a "clearing agency" registered pursuant to the provisions
of Section 17A of the Securities Exchange Act of 1934, as amended. DTC was
created to hold securities for DTC participants and to facilitate the clearance
and settlement of securities transactions between DTC participants through
electronic book-entry changes to the accounts of its participants, thereby
eliminating the need for physical movement of certificates. Participants
include securities brokers and dealers, banks, trust companies and clearing
corporations and may include certain other organizations, such as the initial
purchasers of the CODES. Certain DTC participants or their representatives,
together with other entities, own DTC. Indirect access to the DTC system is
available to others such as banks, brokers, dealers and trust companies that
clear through, or maintain a custodial relationship with, a participant, either
directly or indirectly.

     Although DTC has agreed to the foregoing procedures in order to facilitate
transfers of interests in the global CODES among DTC participants, it is under
no obligation to perform or continue to perform such procedures, and such
procedures may be discontinued at any time. If DTC is at any time unwilling or
unable to continue as depositary and a successor depositary is not appointed by
us within 90 days, we will cause CODES to be issued in definitive form in
exchange for the global CODES. None of L-3 Holdings, the trustee or any of
their respective agents will have any responsibility for the performance by
DTC, direct or indirect DTC participants of their obligations under the rules
and procedures governing their operations, including maintaining, supervising
or reviewing the records relating to, or payments made on account of,
beneficial ownership interests in global CODES.

     According to DTC, the foregoing information with respect to DTC has been
provided to its participants and other members of the financial community for
informational purposes only and is not intended to serve as a representation,
warranty or contract modification of any kind.

     Definitive Notes. A beneficial owner of CODES may request that its CODES
be issued in definitive form, and may request at any time that its interest in
a global CODES be exchanged for a CODES in definitive form. Definitive CODES
may also be issued in exchange for CODES represented by the global CODES if we
do not appoint a successor depositary as set forth above under "-- Global
CODES: Book-Entry Form" or in certain other circumstances set forth in the
indenture.


                                       52


                          DESCRIPTION OF CAPITAL STOCK


GENERAL

     The current certificate of incorporation of L-3 Holdings authorizes
100,000,000 shares of common stock and 25,000,000 shares of preferred stock. As
of September 30, 2001, the outstanding capital stock of L-3 Holdings consisted
of 39,122,326 shares of common stock. The following summaries of certain
provisions of the common stock do not purport to be complete and are subject
to, and qualified in their entirety by, the provisions of the certificate of
incorporation and bylaws of Holdings and by applicable law.


COMMON STOCK

     Holders of common stock are entitled to one vote per share on all matters
to be voted upon by stockholders of L-3 Holdings, and do not have cumulative
voting rights. The holders of common stock are entitled to receive ratably such
dividends, if any, as may be declared from time to time by the Board of
Directors out of funds legally available for that purpose, subject to
preferences that may be applicable to any outstanding preferred stock and any
other provisions of L-3 Holdings' certificate of incorporation. L-3 Holdings
does not, however, anticipate paying any cash dividends in the foreseeable
future. Holders of common stock have no preemptive or other rights to subscribe
for additional shares. No shares of common stock are subject to redemption or a
sinking fund. In the event of any liquidation, dissolution or winding up of L-3
Holdings, after payment of the debts and other liabilities of L-3 Holdings, and
subject to the rights of holders of shares of preferred stock, holders of
common stock are entitled to share in any distribution to the stockholders on a
pro-rata basis. All of the outstanding shares of common stock of L-3 Holdings
are, and the shares offered hereby will be, fully paid and non-assessable. See
"Dividend Policy."


PREFERRED STOCK

     Our Board of Directors is authorized, without further vote or action by
holders of common stock, to issue 25,000,000 shares of preferred stock in one
or more series and to designate the rights, preferences, limitations and
restrictions of and upon shares of each series, including voting, redemption
and conversion rights. The Board of Directors may also designate dividend
rights and preferences in liquidation. It is not possible to state the effect
of the authorization and issuance of any series of preferred stock upon the
rights of such shares without further action by holders of common stock. In
addition, under certain circumstances, the issuance of preferred stock may
render more difficult or tend to discourage a merger, tender offer or proxy
contest, the assumption of control by a holder of a large block of L-3
Holdings' securities or the removal of incumbent management, which could
thereby depress the market price of L-3 Holdings' common stock. We do not
currently have any preferred stock outstanding.


TRANSFER AGENT AND REGISTRAR

     The transfer agent and registrar for the common stock is EquiServe Trust
Company, N.A.


ANTI-TAKEOVER EFFECTS OF PROVISIONS OF OUR CHARTER AND BYLAWS

     The certificate of incorporation of L-3 Holdings provides for our board of
directors to be divided into three classes, with staggered three-year terms. As
a result, only one class of directors will be elected at each annual meeting of
stockholders, with the other classes continuing for the remainder of their
respective three-year terms. Stockholders have no cumulative voting rights, and
the stockholders representing a majority of the shares of common stock
outstanding are able to elect all of the directors.

     The certificate of incorporation of L-3 Holdings also requires that any
action required or permitted to be taken by our stockholders must be effected
at a duly called annual or special meeting of the stockholders and may not be
effected by a consent in writing. Our stockholders may amend our


                                       53


bylaws or adopt new bylaws, by the affirmative vote of 66 2/3% of the
outstanding voting securities. A special meeting of the stockholders may be
called by our Chairman, Chief Executive Officer or stockholders owning 10% or
more of the outstanding voting capital stock. These provisions may have the
effect of delaying, deferring or preventing a change in control.

     The classification of the board of directors and lack of cumulative voting
will make it more difficult not only for another party to obtain control of us
by replacing our board of directors, but also for our existing stockholders to
replace our board of directors. Since the board of directors has the power to
retain and discharge our officers, these provisions could also make it more
difficult for existing stockholders or another party to effect a change in
management.

     Our anti-takeover and other provisions may have the effect of deterring
hostile takeovers or delaying changes in control or management. They are
intended to enhance the likelihood of continued stability in the composition of
our board of directors and in the policies of our board of directors and to
discourage certain types of transactions that may involve an actual or
threatened change in control. Additionally, these provisions are designed to
reduce our vulnerability to an unsolicited acquisition proposal. The provisions
also are intended to discourage certain tactics that may be used in proxy
fights. However, such provisions could have the effect of discouraging others
from making tender offers for our shares and, as a consequence, they also may
inhibit fluctuations in the market price of our shares that could result from
actual or rumored takeover attempts. Such provisions also may have the effect
of preventing changes in our management.


SECTION 203 OF THE DELAWARE GENERAL CORPORATION LAW

     We, as a Delaware corporation, are subject to Section 203 of the Delaware
General Corporation Law, which, subject to certain exceptions, prohibits us
from engaging in any business combination with any interested stockholder for a
period of three years following the time that such stockholder became an
interested stockholder, unless:

     o prior to such time, our board of directors approved either the business
       combination or the transaction that resulted in the stockholder becoming
       an interested holder;

     o upon consummation of the transaction that resulted in the stockholder
       becoming an interested stockholder, the interested stockholder owned at
       least 85.0% of our outstanding voting stock at the time the transaction
       commenced, excluding for purposes of determining the number of shares
       outstanding those shares owned (a) by persons who are directors and also
       officers and (b) by employee stock plans in which employee participants
       do not have the right to determine confidentially whether shares held
       subject to the plan will be tendered in a tender or exchange offer; or

     o at or subsequent to such time, the business combination is approved by
       our board of directors and authorized at an annual or special meeting of
       stockholders, and not by written consent, by the affirmative vote of at
       least 66 2/3% of our outstanding voting stock that is not owned by the
       interested stockholder.

     In general, Section 203 defines "business combination" to include the
following:

     o any merger or consolidation involving the interested stockholder and us;

     o any sale, transfer, pledge or other disposition of 10.0% or more of
       assets involving the interested stockholder;

     o subject to certain exceptions, any transaction that results in our
       issuance or transfer of any of our stock to the interested stockholder;



                                       54


     o any transaction involving us that has the effect of increasing the
       proportionate share of the stock or any class or series of our stock
       beneficially owned by the interested stockholder; or

     o the receipt by the interested stockholder of the benefit of any loans,
       advances, guarantees, pledges or other financial benefits by or through
       us.

     In general, Section 203 defines "interested stockholder" as an entity or
person beneficially owning 15.0% or more of our outstanding voting stock and
any entity or person affiliated with or controlling or controlled by such
entity or person.








                                       55


             CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS

     In the opinion of Simpson Thacher & Bartlett, the following is a summary of
the material United States federal income tax consequences of the purchase,
ownership, and disposition of CODES, and where noted, the common stock, as of
the date of this prospectus. Except where noted, this summary deals only with a
CODES held as a capital asset by a United States holder and it does not deal
with holders in special situations. For example, this summary does not address:

     o tax consequences to holders who may be subject to special tax treatment,
       such as dealers in securities or currencies, traders in securities that
       elect to use the mark-to-market method of accounting for their
       securities, financial institutions, regulated investment companies, real
       estate investment trusts, tax-exempt entities or insurance companies;

     o tax consequences to persons holding CODES as part of a hedging,
       integrated, constructive sale or conversion transaction or a straddle;

     o tax consequences to holders of CODES whose "functional currency" is not
       the U.S. dollar;

     o alternative minimum tax consequences, if any; or

     o any state, local or foreign tax consequences.

     The discussion below is based upon the provisions of the Internal Revenue
Code of 1986, as amended (the "Code"), and regulations, rulings and judicial
decisions as of the date of this prospectus. Those authorities may be changed,
perhaps retroactively, so as to result in United States federal income tax
consequences different from those discussed below.

     If a partnership holds the CODES, the tax treatment of a partner will
generally depend upon the status of the partner and the activities of the
partnership. If you are a partner of a partnership holding the CODES, you
should consult your own tax advisors.

     No statutory, administrative or judicial authority directly addresses the
treatment of the CODES or instruments similar to the CODES for United States
federal income tax purposes. No rulings have been sought or are expected to be
sought from the Internal Revenue Service (the "IRS") with respect to any of the
United States federal income tax consequences discussed below, and no assurance
can be given that the IRS will not take contrary positions.

     IF YOU ARE CONSIDERING THE PURCHASE OF CODES, YOU SHOULD CONSULT YOUR OWN
TAX ADVISORS CONCERNING THE UNITED STATES FEDERAL INCOME TAX CONSEQUENCES IN
LIGHT OF YOUR PARTICULAR SITUATION AND ANY CONSEQUENCES ARISING UNDER THE LAWS
OF ANY OTHER TAXING JURISDICTION.


UNITED STATES HOLDERS

     The following discussion is a summary of certain United States federal
income tax consequences that will apply to you if you are a United States
holder of CODES.

     For purposes of this discussion, a United States holder is a beneficial
owner of a CODES that is:

     o a citizen or resident of the United States;

     o a corporation (or any entity treated as a corporation for United States
       federal income tax purposes) or partnership created or organized in or
       under the laws of the United States or any political subdivision of the
       United States;

     o an estate the income of which is subject to United States federal income
       taxation regardless of its source; or

     o a trust (1) that is subject to the primary supervision of a court within
       the United States and the control of one or more United States persons as
       defined in Section 7701(a)(30) of the Code or (2) that has a valid
       election in effect under applicable United States Treasury regulations to
       be treated as a United States person.


                                       56


 CLASSIFICATION OF THE CODES

     Under the indenture governing the CODES, we and each holder of the CODES
agree, for United States federal income tax purposes, to treat the CODES as
indebtedness that is subject to the regulations governing contingent payment
debt instruments (the "Contingent Debt Regulations") in the manner described
below. The remainder of this discussion assumes that the CODES will be so
treated and does not address any possible differing treatments of the CODES.
However, the application of the Contingent Debt Regulations to instruments such
as the CODES is uncertain in several respects, and no rulings have been sought
from the IRS or a court with respect to any of the tax consequences discussed
below. Accordingly, no assurance can be given that the IRS or a court will
agree with the treatment described herein. Any differing treatment could affect
the amount, timing and character of income, gain or loss in respect of an
investment in the CODES. In particular, a holder might be required to accrue
original issue discount at a lower rate, might not recognize income, gain or
loss upon conversion of the CODES to common stock, and might recognize capital
gain or loss upon a taxable disposition of its CODES. Holders should consult
their tax advisors concerning the tax treatment of holding the CODES.


 ACCRUAL OF INTEREST

     Under the Contingent Debt Regulations, actual cash payments on the CODES,
including payments of contingent interest, if any, will not be reported
separately as taxable income, but will be taken into account under such
regulations. As discussed more fully below, the effect of these Contingent Debt
Regulations will be to:

     o require you, regardless of your usual method of tax accounting, to use
       the accrual method with respect to the CODES;

     o require you to accrue original issue discount at the comparable yield (as
       described below) which will be substantially in excess of interest
       payments actually received by you; and

     o generally result in ordinary rather than capital treatment of any gain,
       and to some extent loss, on the sale, exchange, repurchase or redemption
       of the CODES.

     You will be required to accrue an amount of original issue discount for
United States federal income tax purposes, for each accrual period prior to and
including the maturity date of the CODES that equals:

     o the product of (1) the adjusted issue price (as defined below) of the
       CODES as of the beginning of the accrual period; and (2) the comparable
       yield to maturity (as defined below) of the CODES, adjusted for the
       length of the accrual period;

     o divided by the number of days in the accrual period; and

     o multiplied by the number of days during the accrual period that you held
       the CODES.

     The issue price of a CODES was the first price at which a substantial
amount of the CODES was sold to the public, excluding bond houses, brokers or
similar persons or organizations acting in the capacity of underwriters,
placement agents or wholesalers. The adjusted issue price of a CODES will be its
issue price increased by any original issue discount previously accrued,
determined without regard to any adjustments to original issue discount accruals
described below, and decreased by the projected amounts of any payments
previously made with respect to the CODES. If you purchase a CODES at a price
other than its issue price, see the discussion under "Purchases of CODES at a
price other than the Adjusted Issue Price".

     Under the Contingent Debt Regulations, you will be required to include
original issue discount in income each year, regardless of your usual method of
tax accounting, based on the comparable yield of the CODES. We have determined
the comparable yield of the CODES based on the rate, as of the initial issue
date, at which we would issue a fixed rate nonconvertible debt instrument with
no contingent payments but with terms and conditions similar to the CODES.
Accordingly, we have determined that the comparable yield is an annual rate of
8.0%, compounded semi-annually.


                                       57


     We are required to furnish annually to you and the IRS the comparable
yield and, solely for tax purposes, a projected payment schedule that includes
the actual interest payments, if any, on the CODES and estimates the amount and
timing of contingent interest payments and payment upon maturity on the CODES,
taking into account the fair market value of the common stock that might be
paid upon a conversion of the CODES. You may obtain the projected payment
schedule by submitting a written request for it to us at the address set forth
in "Available Information". By purchasing the CODES, you agree in the indenture
to be bound by our determination of the comparable yield and projected payment
schedule. For United States federal income tax purposes, you must use the
comparable yield and the schedule of projected payments in determining your
original issue discount accruals, and the adjustments thereto described below,
in respect of the CODES.

     THE COMPARABLE YIELD AND THE PROJECTED PAYMENT SCHEDULE ARE NOT PROVIDED
FOR ANY PURPOSE OTHER THAN THE DETERMINATION OF YOUR ORIGINAL ISSUE DISCOUNT
AND ADJUSTMENTS THEREOF IN RESPECT OF THE CODES AND DO NOT CONSTITUTE A
PROJECTION OR REPRESENTATION REGARDING THE ACTUAL AMOUNT OF THE PAYMENTS ON A
CODES.


 ADJUSTMENTS TO INTEREST ACCRUALS ON THE CODES

     If the actual contingent payments made on the CODES differ from the
projected contingent payments, adjustments will be made for the difference. If,
during any taxable year, you receive actual payments with respect to the CODES
for that taxable year that in the aggregate exceed the total amount of
projected payments for the taxable year, you will incur a positive adjustment
equal to the amount of such excess. Such positive adjustment will be treated as
additional original issue discount in such taxable year. For these purposes,
the payments in a taxable year include the fair market value of property
received in that year. If you receive in a taxable year actual payments with
respect to the CODES for that taxable year that in the aggregate are less than
the amount of projected payments for that taxable year, you will incur a
negative adjustment equal to the amount of such deficit. A negative adjustment
will:

     o first, reduce the amount of original issue discount required to be
       accrued in the current year;

     o second, any negative adjustments that exceed the amount of original issue
       discount accrued in the current year will be treated as ordinary loss to
       the extent of your total prior original issue discount inclusions with
       respect to the CODES, reduced to the extent such prior original issue
       discount was offset by prior negative adjustments; and

     o third, any excess negative adjustments will be treated as a regular
       negative adjustment in the succeeding taxable year.


 SALE, EXCHANGE, CONVERSION OR REDEMPTION

     Upon the sale, exchange, conversion, repurchase or redemption of a CODES,
you will recognize gain or loss equal to the difference between your amount
realized and your adjusted tax basis in the CODES. As a holder of a CODES, you
agree that under the Contingent Debt Regulations, you will report the amount
realized as including the fair market value of our stock that you receive on
conversion as a contingent payment. Such gain on a CODES generally will be
treated as ordinary income. Loss from the disposition of a CODES will be
treated as ordinary loss to the extent of your prior net original issue
discount inclusions with respect to the CODES. Any loss in excess of that
amount will be treated as capital loss, which will be long-term if the CODES
was held for greater than one year. The deductibility of net capital losses by
individuals and corporations is subject to limitations.

     Special rules apply in determining the tax basis of a CODES. Your basis in
a CODES is generally increased by original issue discount you previously
accrued (before taking into account any adjustments) on the CODES, and reduced
by the projected amount of any payments previously scheduled to be made.


                                       58


     Under this treatment, your tax basis in the common stock received upon
conversion of a CODES will equal the then current fair market value of such
common stock. Your holding period for our common stock received will commence
on the day of conversion.

     Given the uncertain tax treatment of instruments such as CODES, you should
contact your tax advisers concerning the tax treatment on conversion of a CODES
and the ownership of the common stock.

PURCHASERS OF CODES AT A PRICE OTHER THAN THE ADJUSTED ISSUE PRICE

     If you purchase a CODES in the secondary market for an amount that differs
from the adjusted issue price of the CODES at the time of purchase, you will be
required to accrue interest income on the CODES in accordance with the
comparable yield even if market conditions have changed since the date of
issuance. You must reasonably determine whether the difference between the
purchase price for a CODES and the adjusted issue price of a CODES is
attributable to a change in expectations as to the contingent amounts
potentially payable in respect of the CODES, a change in interest rates since
the CODES were issued, or both, and allocate the difference accordingly.

     Adjustments allocated to a change in interest rates will cause, as the case
may be, a "positive adjustment" or a "negative adjustment" to your interest
inclusion. If the purchase price of a CODES is less than its adjusted issue
price, a positive adjustment will result, and if the purchase price is more
than the adjusted issue price of a CODES, a negative adjustment will result. To
the extent that an adjustment is attributable to a change in interest rates, it
must be reasonably allocated to the daily portions of interest over the
remaining term of the CODES.

     To the extent that the difference between your purchase price for the CODES
and the adjusted issue price of the CODES is attributable to a change in
expectations as to the contingent amounts potentially payable in respect of the
CODES (and not to a change in market interest rates), you will be required to
reasonably allocate that difference to the contingent payments. Adjustments
allocated to the contingent payments will be taken into account when the
contingent payments are made. Any negative or positive adjustment of the kind
described above made by you will decrease or increase, respectively, your tax
basis in the CODES.

     Certain United States holders will receive Forms 1099-OID reporting
interest accruals on their CODES. Those forms will not, however, reflect the
effect of any positive or negative adjustments resulting from your purchase of a
CODES in the secondary market at a price that differs from its adjusted issue
price on date of the purchase. You are urged to consult your tax advisor as to
whether, and how, such adjustments should be made to the amounts reported on any
Form 1099-OID.


CONSTRUCTIVE DISTRIBUTIONS

     The conversion price of the CODES will be adjusted in certain
circumstances. Under section 305(c) of the Code, adjustments (or failures to
make adjustments) that have the effect of increasing your proportionate
interest in our assets or earnings may in some circumstances result in a deemed
distribution to you. Any deemed distributions will be taxable as a dividend,
return of capital, or capital gain in accordance with the earnings and profits
rules under the Code.


NON-UNITED STATES HOLDERS

     The following is a summary of the United States federal tax consequences
that will apply to you if you are a non-United States holder of CODES or shares
of common stock. The term "non-United States holder" means a beneficial owner
of a CODES that is not a United States holder.

     Special rules may apply to certain non-United States holders such as
"controlled foreign corporations", "passive foreign investment companies",
"foreign personal holding companies", corporations that accumulate earnings to
avoid federal income tax or, in certain circumstances, United States
expatriates. Such non-United States holders should consult their own tax
advisors to determine the United States federal, state, local and other tax
consequences that may be relevant to them.

                                       59



PAYMENTS WITH RESPECT TO THE CODES

     The 30% United States federal withholding tax will not apply to any
payment to you of principal or interest (including amounts taken into income
under the accrual rules described above under "--United States Holders" and a
payment of common stock pursuant to a conversion) on a CODES, provided that:

     o you do not actually, indirectly or constructively own 10% or more of the
       total combined voting power of all classes of our stock that are entitled
       to vote within the meaning of Section 871(h)(3) of the Code;

     o you are not a controlled foreign corporation that is related to us
       through stock ownership;

     o you are not a bank whose receipt of interest (including original issue
       discount) on a CODES is described in Section 881(c)(3)(A) of the Code;
       and

     o our common stock continues to be actively traded within the meaning of
       Section 871(h)(4)(C)(v)(1) of the Code and we are not a "United States
       real property holding corporation"; and

     o (a) you provide your name and address, and certify, under penalties of
       perjury, that you are not a United States person (which certification may
       be made on an IRS Form W-8BEN (or successor form)) or (b) you hold your
       CODES through certain foreign intermediaries and you satisfy the
       certification requirements of applicable Treasury regulations. Special
       certification rules apply to holders that are pass-through entities.

     If you cannot satisfy the requirements described above, payments of
interest (including original issue discount) will be subject to the 30% United
States federal withholding tax, unless you provide us with a properly executed
(1) IRS Form W-8BEN (or successor form) claiming an exemption from or reduction
in withholding under the benefit of an applicable tax treaty or (2) IRS Form
W-8ECI (or successor form) stating that interest (including original issue
discount) paid on the CODES is not subject to withholding tax because it is
effectively connected with your conduct of a trade or business in the United
States.

     If you are engaged in a trade or business in the United States and
interest (including original issue discount) on a CODES is effectively
connected with the conduct of that trade or business, you will be subject to
United States federal income tax on that interest on a net income basis
(although exempt from the 30% withholding tax) in the same manner as if you
were a United States person as defined under the Code. In addition, if you are
a foreign corporation, you may be subject to a "branch profits tax" equal to
30% (or lower applicable treaty rate) of your earnings and profits for the
taxable year, subject to adjustments, that are effectively connected with your
conduct of a trade or business in the United States. For this purpose, interest
(including original issue discount) will be included in the earnings and
profits of such foreign corporation.

     The 30% United States federal withholding tax may not be avoided by
satisfying the conditions in the five bullet points set out above to the extent
interest on the CODES is adjusted to equal the adjusted interest rate, as
described above under "Description of the CODES--Interest Rate Adjustments." In
such a case, the interest would likely be described in section 871(h)(4)(A) of
the Code and therefore would not be eligible for the exemption from withholding
generally provided under section 871(h) of the Code, to which the five bullet
points relate. However, withholding could be reduced or eliminated in the
manner described in the paragraph immediately following the five bullet points
above.


 PAYMENTS ON COMMON STOCK AND CONSTRUCTIVE DIVIDENDS

     Any dividends paid to you with respect to the shares of common stock (and
any deemed dividends resulting from certain adjustments, or failure to make
adjustments, to the number of shares of common stock to be issued upon
conversion, see "--Constructive Distributions" above) will be subject to
withholding tax at a 30% rate or such lower rate as may be specified by an
applicable

                                       60


income tax treaty. However, dividends that are effectively connected with the
conduct of a trade or business within the United States and, where a tax treaty
applies, are attributable to a United States permanent establishment, are not
subject to the withholding tax, but instead are subject to United States federal
income tax on a net income basis at applicable graduated individual or corporate
rates. Certain certification and disclosure requirements must be complied with
in order for effectively connected income to be exempt from withholding. Any
such effectively connected dividends received by a foreign corporation may,
under certain circumstances, be subject to an additional "branch profits tax" at
a 30% rate or such lower rate as may be specified by an applicable income tax
treaty.

     A non-United States holder of shares of common stock who wishes to claim
the benefit of an applicable treaty rate is required to satisfy applicable
certification and other requirements. If you are eligible for a reduced rate of
United States withholding tax pursuant to an income tax treaty, you may obtain
a refund of any excess amounts withheld by filing an appropriate claim for
refund with the IRS.

     As more fully described under "Description of the CODES--Registration
Rights," upon the occurrence of certain enumerated events we may be required to
pay additional amounts to you. Payments of such additional amounts may be
subject to federal withholding.


 SALE, EXCHANGE OR REDEMPTION OF SHARES OF COMMON STOCK

     Any gain realized upon the sale, exchange, redemption or other disposition
of a share of common stock generally will not be subject to United States
federal income tax unless:

     o that gain is effectively connected with the conduct of a trade or
       business in the United States by you,

     o you are an individual who is present in the United States for 183 days or
       more in the taxable year of that disposition, and certain other
       conditions are met, or

     o we are or have been a "United States real property holding corporation"
       for United States federal income tax purposes.

     An individual non-United States holder described in the first bullet point
above will be subject to United States federal income tax on the net gain
derived from the sale. An individual non-United States holder described in the
second bullet point above will be subject to a flat 30% United States federal
income tax on the gain derived from the sale, which may be offset by United
States source capital losses, even though the holder is not considered a
resident of the United States. A non-United States holder that is a foreign
corporation and is described in the first bullet point above will be subject to
tax on gain under regular graduated United States federal income tax rates and,
in addition, may be subject to a "branch profits tax" at a 30% rate or a lower
rate if so specified by an applicable income tax treaty.

     We believe that we are not and do not anticipate becoming a "United States
real property holding corporation" for United States federal income tax
purposes.


 UNITED STATES FEDERAL ESTATE TAX

     The United States federal estate tax will not apply to CODES owned by you
at the time of your death, provided that (1) you do not own 10% or more of the
total combined voting power of all classes of our voting stock (within the
meaning of the Code and the United States Treasury regulations) and (2)
interest on the CODES would not have been, if received at the time of your
death, effectively connected with your conduct of a trade or business in the
United States. However, shares of common stock held by you at the time of your
death will be included in your gross estate for United States federal estate
tax purposes unless an applicable estate tax treaty provides otherwise.


BACKUP WITHHOLDING AND INFORMATION REPORTING

     If you are a United States holder of CODES, information reporting
requirements will generally apply to all payments we make to you and the
proceeds from a sale of a CODES or share of common

                                       61


stock made to you, unless you are an exempt recipient such as a corporation. A
backup withholding tax will apply to those payments if you fail to provide a
taxpayer identification number, or a certification of exempt status, or if you
fail to report in full interest income.

     In general, if you are a non-United States holder you will not be subject
to backup withholding with respect to payments that we make to you provided
that we do not have actual knowledge or reason to know that you are a United
States person and you have given us the statement described above under
"--Payments With Respect to the CODES." We must report annually to the IRS and
to each non-United States holder the amount of dividends paid to such holder
and the tax withheld with respect to such dividends, regardless of whether
withholding was required.

     In addition, if you are a non-United States holder you will not be subject
to backup withholding or information reporting with respect to the proceeds of
the sale of a CODES or share of common stock within the United States or
conducted through certain United States-related financial intermediaries, if
the payor receives the statement described above and does not have actual
knowledge that you are a United States person, as defined under the Code, or
you otherwise establish an exemption.

     Any amounts withheld under the backup withholding rules will be allowed as
a refund or a credit against your United States federal income tax liability
provided the required information is timely furnished to the IRS.


                                       62


                              PLAN OF DISTRIBUTION

     The selling holders and their successors, including their transferees,
pledgees or donees or their successors, may sell the CODES and the common stock
into which the CODES are convertible directly to purchasers or through
underwriters, broker-dealers or agents, who may receive compensation in the
form of discounts, concessions or commissions from the selling holders or the
purchasers. These discounts, concessions or commissions as to any particular
underwriter, broker-dealer or agent may be in excess of those customary in the
types of transactions involved.

     The CODES and the common stock into which the CODES are convertible may be
sold in one or more transactions at fixed prices, at prevailing market prices
at the time of sale, at prices related to the prevailing market prices, at
varying prices determined at the time of sale, or at negotiated prices. These
sales may be effected in transactions, which may involve crosses or block
transactions:

     o on any national securities exchange or U.S. inter-dealer system of a
       registered national securities association on which the CODES or the
       common stock may be listed or quoted at the time of sale;

     o in the over-the-counter market;

     o in transactions otherwise than on these exchanges or systems or in the
       over-the-counter market;

     o through the writing of options, whether the options are listed on an
       options exchange or otherwise; or

     o through the settlement of short sales.

     In connection with the sale of the CODES and the common stock into which
the CODES are convertible or otherwise, the selling holders may enter into
hedging transactions with the broker-dealers or other financial institutions,
which may in turn engage in short sales of the CODES or the common stock into
which the CODES are convertible in the course of hedging the positions they
assume. The selling holders may also sell the CODES or the common stock into
which the CODES are convertible short and deliver these securities to close out
their short positions, or loans or pledge the CODES or the common stock into
which the CODES are convertible to broker-dealers that in turn may sell these
securities.

     The aggregate proceeds to the selling holders from the sale of the CODES
or common stock into which the CODES are convertible offered by them will be
the purchase price of the CODES or common stock less discounts and commissions,
if any. Each of the selling holders reserves the right to accept and, together
with their agents from time to time, to reject, in whole or in part, any
proposed purchase of CODES or common stock to be made directly or through
agents. We will not receive any of the proceeds from the sale by the selling
holders of the CODES or the common stock into which the CODES are convertible.

     Our outstanding common stock is listed for trading on the New York Stock
Exchange. We do not intend to list the CODES on any national market or
exchange. Although the initial purchasers of the CODES have advised us that
they intend to make a market in the CODES, they are not obligated to do so.
Therefore, we cannot assure you of the liquidity of the trading market for the
CODES.

     In order to comply with the securities laws of some states, if applicable,
the CODES and common stock into which the CODES are convertible may be sold in
these jurisdictions only through registered or licensed brokers or dealers. In
addition, in some states the CODES and common stock into which the CODES are
convertible may not be sold unless they have been registered or qualified for
sale or an exemption from registration or qualification requirements is
available and is complied with.

     The selling holders and any underwriters, broker-dealers or agents that
participate in the sale of the CODES and common stock into which the CODES are
convertible may be "underwriters" within the meaning of Section 2(11) of the
Securities Act. Any discounts, commissions, concessions or profit they earn on
any resale of the shares may be underwriting discounts and commissions under
the Securities Act. Selling holders who are "underwriters" within the meaning
of Section 2(11) of the


                                       63

Securities Act will be subject to the prospectus delivery requirements of the
Securities Act. The selling holders have acknowledged that they understand
their obligations to comply with the provisions of the Exchange Act and the
rules thereunder relating to stock manipulation, particularly Regulation M.

     In addition, any securities covered by this prospectus that qualify for
sale pursuant to Rule 144 or Rule 144A of the Securities Act may be sold under
Rule 144 or Rule 144A rather than pursuant to this prospectus. A selling holder
may not sell any CODES or common stock described in this prospectus and may not
transfer, devise or gift these securities by other means not described in this
prospectus.

     To the extent required, the specific CODES or common stock to be sold, the
names of the selling holders, the respective purchase prices and public
offering prices, the names of any agent, dealer or underwriter, and any
applicable commission or discounts with respect to a particular offer will be
set forth in an accompanying prospectus supplement or, if appropriate, a
post-effective amendment to the registration statement of which this prospectus
is a part.

     We entered into a registration rights agreement for the benefit of holders
of the CODES to register their CODES and common stock under applicable federal
and state securities laws under specific circumstances and at specific times.
The registration rights agreement provided for cross-indemnification of the
selling holders and us and their and our respective directors, officers and
controlling persons against specific liabilities in connection with the offer
and sale of the CODES and the common stock, including liabilities under the
Securities Act. We will pay substantially all of the expenses incurred by the
selling holders incident to the offering and sale of the CODES and the common
stock.

                                 LEGAL MATTERS

     The validity of the CODES offered by this prospectus and of the shares of
common stock issuable upon conversion thereof will be passed upon for us by
Simpson Thacher & Bartlett, New York, New York.

                                    EXPERTS

     The following financial statements have been incorporated by reference in
this registration statement in reliance of the report of PricewaterhouseCoopers
LLP, independent accountants, given their authority as experts in accounting and
auditing:

     o    Our consolidated fiancial statements as of December 31, 1999 and 2000
          and for the three years ended December 31, 2000 incorporated by
          reference in this registration statement from our annual report for
          the year ended December 31, 2000.

     o    The financial statements of the Honeywell Traffic Alert and Collision
          Avoidance System Business for the years ended December 31, 1999 and
          1998 incorporated by reference in this registration statement from the
          report on Form 8-K/A dated March 21, 2001.

     o    The financial statements of the Raytheon Training Devices and Training
          Services Business for the year ended December 31, 1999 incorporated by
          reference from the report on Form 8-K/A dated March 21, 2001.

     o    The Consolidated financial statements of EER Systems, Inc. for ther
          year ended December 31, 2000 incorporated by reference from the report
          on Form 8-K dated December 18, 2001.

                             AVAILABLE INFORMATION

     We are subject to the informational requirements of the Securities
Exchange Act of 1934 and, in accordance therewith, files reports and other
information with the SEC. Such reports and other information can be inspected
and copied at the Public Reference Section of the SEC located at Room 1024,
Judiciary Plaza, 450 Fifth Street, N.W., Washington D.C. 20549 and at a
regional public reference facility maintained by the SEC located at Citicorp
Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of
such material can be obtained from the Public Reference Section of the SEC at
prescribed rates. Such material may also be accessed electronically by means of
the SEC's home page on the Internet (http://www.sec.gov).

     So long as we are subject to the periodic reporting requirements of the
Securities Exchange Act, we are required to furnish the information required to
be filed with the SEC to the trustee and the holders of the CODES. We have
agreed that, even if we are not required under the Securities Exchange Act to
furnish such information to the SEC, we will nonetheless continue to furnish
information that would be required to be furnished by us by Section 13 of the
Securities Exchange Act to the trustee and the holders of the CODES as if it
were subject to such periodic reporting requirements.

                                       64


                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     The SEC allows us to "incorporate by reference" the information contained
in documents that we file with them, which means that we can disclose important
information to you by referring you to those documents. The information
incorporated by reference is considered to be part of this prospectus.
Information in this prospectus supersedes information incorporated by reference
that we filed with the SEC prior to the date of this prospectus, while
information that we file later with the SEC will automatically update and
supersede this information. We incorporate by reference the documents listed
below and any future filings we will make with the SEC under Sections 13(a),
13(c), 14 or 15(d) of the Securities Exchange Act of 1934.

     o Our Annual Report on Form 10-K for the fiscal year ended December 31,
       2000;

     o Our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2001,
       June 30, 2001 and September 30, 2001;

     o Our Current Reports on Form 8-K/A dated March 21, 2001 and April 3, 2001;
       and

     o Our Current Reports on Form 8-K dated October 22, 2001 and December 18,
       2001.

     You can request a copy of these filings at no cost, by writing or calling
us at the following address:

          L-3 Communications Holdings, Inc.
          600 Third Avenue
          New York, New York 10016
          (212) 697-1111
          Attention: Corporate Secretary.

     YOU SHOULD ONLY RELY ON THE INFORMATION INCORPORATED BY REFERENCE OR
PROVIDED IN THIS PROSPECTUS. WE HAVE NOT AUTHORIZED ANYONE ELSE TO PROVIDE YOU
WITH DIFFERENT INFORMATION. WE ARE NOT MAKING AN OFFER OF THESE SECURITIES IN
ANY STATE WHERE THE OFFER IS NOT PERMITTED. YOU SHOULD NOT ASSUME THAT THE
INFORMATION IN THIS PROSPECTUS IS ACCURATE AS OF ANY DATE OTHER THAN THE DATE
ON THE FRONT OF THOSE DOCUMENTS.


                                       65





                                  $420,000,000






                                [GRAPHIC OMITTED]
                                 COMMUNICATIONS

                        L-3 COMMUNICATIONS HOLDINGS, INC.



      4.00% SENIOR SUBORDINATED CONVERTIBLE CONTINGENT DEBT SECURITIES(SM)

                              (CODES)(SM) DUE 2011


                      AND 3,902,439 SHARES OF COMMON STOCK
                      ISSUABLE UPON CONVERSION OF THE CODES











                             ----------------------
                                   PROSPECTUS
                               DECEMBER 18, 2001
                            ----------------------


                 PART II INFORMATION NOT REQUIRED IN PROSPECTUS


ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

     The following is an itemization of all fees and expenses incurred or
expected to be incurred by the registrant in connection with the issuance and
distribution of the securities being registered hereby. All but the Securities
and Exchange Commission registration fee and the New York Stock Exchange
listing fee are estimates and remain subject to future contingencies.



                                                              
       Securities and Exchange Commission registration fee .....  $100,380
       New York Stock Exchange listing fee .....................  $  1,500
       Legal fees and expenses .................................  $ 75,000
       Accounting fees and expenses ............................  $ 50,000
       Trustee's fees and expenses .............................  $  2,500
       Printing and engraving expenses .........................  $ 50,000
       Miscellaneous expenses ..................................  $  6,000
                                                                  --------
        Total ..................................................  $285,380
                                                                  ========



ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Section 145 of the Delaware General Corporation Law (the "DGCL") provides
for, among other things:

     (i)   permissive indemnification for expenses (including attorneys' fees),
           judgments, fines and amounts paid in settlement actually and
           reasonably incurred by designated persons, including directors and
           officers of a corporation, in the event such persons are parties to
           litigation other than stockholder derivative actions if certain
           conditions are met;

     (ii)  permissive indemnification for expenses (including attorneys' fees)
           actually and reasonably incurred by designated persons, including
           directors and officers of a corporation, in the event such persons
           are parties to stockholder derivative actions if certain conditions
           are met;

     (iii) mandatory indemnification for expenses (including attorneys' fees)
           actually and reasonably incurred by designated persons, including
           directors and officers of a corporation, in the event such persons
           are successful on the merits or otherwise in defense of litigation
           covered by (i) and (ii) above; and

     (iv)  that the indemnification provided for by Section 145 is not deemed
           exclusive of any other rights which may be provided under any by-law,
           agreement, stockholder or disinterested director vote, or otherwise.

     In addition to the indemnification provisions of the DGCL described above,
our Certificate of Incorporation (the "Certificate of Incorporation") provides
that we shall, to the fullest extent permitted by the DGCL, (i) indemnify our
officers and directors and (ii) advance expenses incurred by such officers or
directors in relation to any action, suit or proceeding.

     Our Bylaws (the "Bylaws") require the advancement of expenses to an
officer or director (without a determination as to his conduct) in advance of
the final disposition of a proceeding if such person furnishes a written
affirmation of his good faith belief that he has met the applicable standard of
conduct and furnishes a written undertaking to repay any advances if it is
ultimately determined that he is not entitled to indemnification. In connection
with proceedings by or in the right of the Registrant, the Bylaws provide that
indemnification shall include not only reasonable expenses, but also judgments,
fines, penalties and amounts paid in settlement. The Bylaws provide that the
Registrant may, subject to authorization on a case by case basis, indemnify and
advance expenses to employees or agents to the same extent as a director or to
a lesser extent (or greater, as permitted by law) as determined by the board of
directors.

     The Bylaws purport to confer upon officers and directors contractual
rights to indemnification and advancement of expenses as provided therein.




                                      II-1


     Our Certificate of Incorporation limits the personal liability of our
directors to us or our stockholders for monetary damages for breach of the
fiduciary duty as a director, other than liability as a director (i) for breach
of duty of loyalty to us or our stockholders, (ii) for acts or omissions not in
good faith or which involve intentional misconduct or a knowing violation of
law, (iii) under Section 174 of the DGCL (certain illegal distributions) or
(iv) for any transaction for which the director derived an improper personal
benefit.

     We maintain officers' and directors' insurance covering certain
liabilities that may be incurred by officers and directors in the performance
of their duties.

     Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers or persons controlling the
registrant pursuant to the foregoing provisions, the registrant has been
informed that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Act and is
therefore unenforceable.


ITEM 16. EXHIBITS

     The following exhibits are filed as part of this registration statement:




EXHIBIT
  NO.     DESCRIPTION
  ---     -----------
       
  1       Purchase Agreement*

  4       Instruments defining the rights of security holders

          a. Certificate of Incorporation (incorporated herein by reference to Exhibit 3.1 of L-3
             Communications Holdings, Inc.'s Registration Statement on Form S-1, as filed with the
             Commission on February 27, 1998 (File No. 333-46975))

          b. By-laws (incorporated herein by reference to Exhibit 3.2 of L-3 Communications
             Holdings, Inc.'s Registration Statement on Form S-1, as filed with the Commission on
             February 27, 1998 (File No. 333-46975))

          c. Form of stock certificate (incorporated herein by reference to Exhibit 4.1 of L-3
             Communications Holdings, Inc.'s Registration Statement on Form S-1 (File No.
             333-46975))

          d. Stockholders Agreement dated as of April 30, 1997 among L-3 Communications
             Holdings, Inc. and the stockholders parties thereto (incorporated by reference to
             Exhibit 10.3 to L-3 Communications Holdings, Inc.'s Registration Statement on Form
             S-1 No. 333-46975)

          e. Registration Rights Agreement dated as of October 24, 2001 among L-3
             Communications Holdings, Inc., the Guarantors named therein and Lehman Brothers
             Inc., Bear, Stearns & Co., Inc. and Credit Suisse First Boston Corporation, as Initial
             Purchasers*

          f. Indenture dated as of October 24, 2001 among L-3 Communications Holdings, Inc., the
             Guarantors named therein and Lehman Brothers Inc., Bear, Stearns & Co., Inc. and
             Credit Suisse First Boston Corporation, as Initial Purchasers*

          g. Form of CODES (included as an Exhibit to the Indenture)

          h. Supplemental Indenture dated as of November 9, 2001 among L-3 Communications Holdings, Inc.
             the Guarantors named therein and The Bank of New York, as Trustee*

  5       Opinion of Simpson Thacher & Bartlett*

  8       Opinion of Simpson Thacher & Bartlett as to certain U.S. federal income tax matters*

 12       Statements re: Computation of Ratios*

 23(a)    Consent of PricewaterhouseCoopers LLP*

 23(b)    Consent of Simpson Thacher & Bartlett (contained in their opinions filed as Exhibits 5 and 8)*

 24       Power of Attorney**

 25       Statement of Eligibility of Trustee on Form T-1*


----------
*     Filed herewith

**    Included on the signature page hereto.


                                      II-2


ITEM 17. UNDERTAKINGS

(a) The undersigned registrant hereby undertakes:

     (1) To file, during any period in which offers or sales are being made, a
         post-effective amendment to this registration statement:

         (i)   To include any prospectus required by Section 10(a)(3) of the
               Securities Act;

         (ii)  To reflect in the prospectus any facts or events arising after
               the effective date of the Registration Statement (or the most
               recent post-effective amendment thereof) which, individually or
               in the aggregate, represent a fundamental change in the
               information set forth in the Registration Statement.
               Notwithstanding the foregoing, any increase or decrease in the
               volume of securities offered (if the total dollar value of
               securities offered would not exceed that which was registered)
               and any deviation from the low or high end of the estimated
               maximum offering range may be reflected on the form of prospectus
               filed with the Commission pursuant to Rule 424(b) if, in the
               aggregate, the changes in volume and price represent no more than
               20 percent change in the maximum aggregate offering price set
               forth in the "Calculation of Registration Fee" table in the
               effective Registration Statement; and

         (iii) To include any material information with respect to the plan of
               distribution not previously disclosed in the Registration
               Statement or any material change to such information in the
               Registration Statement.

     (2) That, for the purpose of determining any liability under the Securities
         Act, each such post-effective amendment shall be deemed to be a new
         registration statement relating to the securities offered therein, and
         the offering of such securities at that time shall be deemed to be the
         initial bona fide offering thereof.

     (3) To remove from registration by means of a post-effective amendment any
         of the securities being registered which remain unsold at the
         termination of the offering.

(b) Insofar as indemnification for liabilities arising under the Securities Act
    may be permitted to directors, officers and controlling persons of the
    registrant pursuant to the foregoing provisions, or otherwise, the
    registrant has been advised that in the opinion of the Commission such
    indemnification is against public policy as expressed in the Securities Act,
    and is, therefore, unenforceable. In the event that a claim for
    indemnification against such liabilities (other than the payment by a
    registrant of expenses incurred or paid by a director, officer or
    controlling person of such registrant in the successful defense of any
    action, suit or proceeding) is asserted by such director, officer or
    controlling person in connection with the securities being registered, the
    registrant will, unless in the opinion of its counsel the matter has been
    settled by controlling precedent, submit to a court of appropriate
    jurisdiction the question whether such indemnification by it is against
    public policy as expressed in the Securities Act and will be governed by the
    final adjudication of such issue.

(c) The undersigned registrant hereby undertakes to file an application for the
    purpose of determining the eligibility of the trustee to act under
    Subsection (a) of Section 310 of the Trust Indenture Act in accordance with
    the rules and regulations prescribed by the Commission under Section
    305(b)(2) of the Trust Indenture Act.


                                      II-3


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and duly caused this registration statement
to be signed on its behalf by the undersigned, thereunto duly authorized, in
the city of New York, state of New York, on December 18, 2001.


                                      L-3 COMMUNICATIONS HOLDINGS, INC.

                                      By: /s/ Christopher C. Cambria
                                          --------------------------------------
                                      Christopher C. Cambria, Senior Vice
                                      President -- General Counsel and Secretary


                       SIGNATURES AND POWERS OF ATTORNEY

     Each person whose signature appears below authorizes Christopher C.
Cambria, Michael T. Strianese, Frank C. Lanza, Robert V. LaPenta, or any of
them, as his attorney in fact and agent, with full power of substitution and
resubstitution, to execute, in his name and on his behalf, in any and all
capacities, this Registration Statement on Form S-3 relating to the CODES,
common stock into which the CODES are convertible and the subsidiary guarantees
and any amendments thereto (and any additional registration statement related
thereto permitted by Rule 462 (b) promulgated under the Securities Act of 1933
(and all further amendments including post-effective amendments thereto)
necessary or advisable to enable the registrant to comply with the Securities
Act of 1933, and any rules, regulations and requirements of the Securities and
Exchange Commission, in respect thereof, in connection with the registration of
the securities which are the subject of such registration statement, which
amendments may make such changes in such registration statement as such
attorney may deem appropriate, and with full power and authority to perform and
do any and all acts and things whatsoever which any such attorney or substitute
may deem necessary or advisable to be performed or done in connection with any
or all of the above-described matters, as fully as each of the undersigned
could do if personally present and acting, herby ratifying and approving all
acts of any such attorney or substitute.

     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.



          SIGNATURE                                  TITLE                               DATE
          ---------                                  -----                               ----
                                                                            
    /s/ Frank C. Lanza               Chairman, Chief Executive Officer and        December 18, 2001
-------------------------------      Director
        Frank C. Lanza

    /s/ Robert V. LaPenta            President, Chief Financial Officer and       December 18, 2001
-------------------------------      Director
        Robert V. LaPenta

  /s/ Christopher C. Cambria         Senior Vice President -- General Counsel     December 18, 2001
-------------------------------      and Secretary
      Christopher C. Cambria

   /s/ Michael T. Strianese          Senior Vice President -- Finance             December 18, 2001
-------------------------------
       Michael T. Strianese

    /s/ Thomas A. Corcoran           Director                                     December 18, 2001
-------------------------------
        Thomas A. Corcoran

    /s/ Robert B. Millard            Director                                     December 18, 2001
-------------------------------
        Robert B. Millard




                                      II-4





           SIGNATURE                TITLE              DATE
           ---------                -----              ----
                                           
    /s/ John E. Montague          Director       December 18, 2001
------------------------------
        John E. Montague

   /s/ John M. Shalikashvili      Director       December 18, 2001
------------------------------
       John M. Shalikashvili

     /s/ Arthur L. Simon          Director       December 18, 2001
------------------------------
         Arthur L. Simon

    /s/ Alan H. Washkowitz        Director       December 18, 2001
------------------------------
        Alan H. Washkowitz




                                      II-5



                               INDEX TO EXHIBITS



EXHIBIT
  NO.       DESCRIPTION
  ---       -----------
         
    1       Purchase Agreement*

    4       Instruments defining the rights of security holders

            a. Certificate of Incorporation (incorporated herein by reference to Exhibit 3.1 of L-3
               Communications Holdings, Inc.'s Registration Statement on Form S-1, as filed with
               the Commission on February 27, 1998 (File No. 333-46975))

            b. By-laws (incorporated herein by reference to Exhibit 3.2 of L-3 Communications
               Holdings, Inc.'s Registration Statement on Form S-1, as filed with the Commission
               on February 27, 1998 (File No. 333-46975))

            c. Form of stock certificate (incorporated herein by reference to Exhibit 4.1 of L-3
               Communications Holdings, Inc.'s Registration Statement on Form S-1 (File No.
               333-46975))

            d. Stockholders Agreement dated as of April 30, 1997 among L-3 Communications
               Holdings, Inc. and the stockholders parties thereto (incorporated by reference to
               Exhibit 10.3 to L-3 Communications Holdings, Inc.'s Registration Statement on
               Form S-1 No. 333-46975)

            e. Registration Rights Agreement dated as of October 24, 2001 among L-3
               Communications Holdings, Inc., the Guarantors named therein and Lehman
               Brothers Inc., Bear, Stearns & Co., Inc. and Credit Suisse First Boston
               Corporation, as Initial Purchasers*

            f. Indenture dated as of October 24, 2001 among L-3 Communications Holdings, Inc.,
               the Guarantors named therein and Lehman Brothers Inc., Bear, Stearns & Co., Inc.
               and Credit Suisse First Boston Corporation, as Initial Purchasers*

            g. Form of CODES (included as an Exhibit to the Indenture)

            h. Supplemental Indenture dated as of November 9, 2001 among L-3 Communications Holdings, Inc.
               the Guarantors named therein and The Bank of New York, as Trustee*

    5       Opinion of Simpson Thacher & Bartlett*

    8       Opinion of Simpson Thacher & Bartlett as to certain U.S. federal income tax matters*

   12       Statements re: Computation of Ratios*

   23(a)    Consent of PricewaterhouseCoopers LLP*

   23(b)    Consent of Simpson Thacher & Bartlett (contained in their opinions filed as Exhibits 5 and 8)*

   24       Power of Attorney**

   25       Statement of Eligibility of Trustee on Form T-1*


----------
*     Filed herewith

**    Included on the signature page hereto.