Document:

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                                                                     Exhibit 4.1
                                                                  EXECUTION COPY

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                         L-3 COMMUNICATIONS CORPORATION,
                                    As Issuer

                    6-1/8% SENIOR SUBORDINATED NOTES DUE 2013

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

                                    INDENTURE

                            Dated as of May 21, 2003

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

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

                              The Bank of New York,
                                   As Trustee

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

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                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
<S>                   <C>                                                                                       <C>
ARTICLE 1. DEFINITIONS AND INCORPORATION BY REFERENCE.............................................................2

   SECTION 1.01       DEFINITIONS.................................................................................2
   SECTION 1.02       OTHER DEFINITIONS..........................................................................19
   SECTION 1.03       INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT..........................................19
   SECTION 1.04       RULES OF CONSTRUCTION......................................................................20

ARTICLE 2. THE NOTES.............................................................................................20

   SECTION 2.01       FORM AND DATING............................................................................20
   SECTION 2.02       EXECUTION AND AUTHENTICATION...............................................................21
   SECTION 2.03       REGISTRAR AND PAYING AGENT.................................................................22
   SECTION 2.04       PAYING AGENT TO HOLD MONEY IN TRUST........................................................22
   SECTION 2.05       HOLDER LISTS...............................................................................22
   SECTION 2.06       TRANSFER AND EXCHANGE......................................................................23
   SECTION 2.07       REPLACEMENT NOTES..........................................................................35
   SECTION 2.08       OUTSTANDING NOTES..........................................................................35
   SECTION 2.09       TREASURY NOTES.............................................................................36
   SECTION 2.10       TEMPORARY NOTES............................................................................36
   SECTION 2.11       CANCELLATION...............................................................................36
   SECTION 2.12       DEFAULTED INTEREST.........................................................................36
   SECTION 2.13       CUSIP NUMBERS..............................................................................37

ARTICLE 3. REDEMPTION AND PREPAYMENT.............................................................................37

   SECTION 3.01       NOTICES TO TRUSTEE.........................................................................37
   SECTION 3.02       SELECTION OF NOTES TO BE REDEEMED..........................................................37
   SECTION 3.03       NOTICE OF REDEMPTION.......................................................................38
   SECTION 3.04       EFFECT OF NOTICE OF REDEMPTION.............................................................39
   SECTION 3.05       DEPOSIT OF REDEMPTION PRICE................................................................39
   SECTION 3.06       NOTES REDEEMED IN PART.....................................................................39
   SECTION 3.07       OPTIONAL REDEMPTION........................................................................39
   SECTION 3.08       MANDATORY REDEMPTION.......................................................................40
   SECTION 3.09       OFFER TO PURCHASE BY APPLICATION OF EXCESS PROCEEDS........................................40

ARTICLE 4. COVENANTS.............................................................................................42

   SECTION 4.01       PAYMENT OF NOTES...........................................................................42
   SECTION 4.02       MAINTENANCE OF OFFICE OR AGENCY............................................................42
   SECTION 4.03       REPORTS....................................................................................43
   SECTION 4.04       COMPLIANCE CERTIFICATE.....................................................................43
   SECTION 4.05       TAXES......................................................................................44
   SECTION 4.06       STAY, EXTENSION AND USURY LAWS.............................................................44
   SECTION 4.07       RESTRICTED PAYMENTS........................................................................44
   SECTION 4.08       DIVIDEND AND OTHER PAYMENT RESTRICTIONS AFFECTING RESTRICTED SUBSIDIARIES..................47
   SECTION 4.09       INCURRENCE OF INDEBTEDNESS AND ISSUANCE OF PREFERRED STOCK.................................48
   SECTION 4.10       ASSET SALES................................................................................50
   SECTION 4.11       TRANSACTIONS WITH AFFILIATES...............................................................51
   SECTION 4.12       LIENS......................................................................................52
   SECTION 4.13       FUTURE SUBSIDIARY GUARANTEES...............................................................52

                                       i

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   SECTION 4.14       CORPORATE EXISTENCE........................................................................54
   SECTION 4.15       OFFER TO REPURCHASE UPON CHANGE OF CONTROL.................................................54
   SECTION 4.16       NO SENIOR SUBORDINATED DEBT................................................................55
   SECTION 4.17       PAYMENTS FOR CONSENT.......................................................................55
   SECTION 4.18       CHANGES IN COVENANTS WHEN NOTES RATED INVESTMENT GRADE.....................................55

ARTICLE 5. SUCCESSORS............................................................................................56

   SECTION 5.01       MERGER, CONSOLIDATION, OR SALE OF ASSETS...................................................56
   SECTION 5.02       SUCCESSOR CORPORATION SUBSTITUTED..........................................................57

ARTICLE 6. DEFAULTS AND REMEDIES.................................................................................57

   SECTION 6.01       EVENTS OF DEFAULT..........................................................................57
   SECTION 6.02       ACCELERATION...............................................................................59
   SECTION 6.03       OTHER REMEDIES.............................................................................60
   SECTION 6.04       WAIVER OF PAST DEFAULTS....................................................................60
   SECTION 6.05       CONTROL BY MAJORITY........................................................................60
   SECTION 6.06       LIMITATION ON SUITS........................................................................60
   SECTION 6.07       RIGHTS OF HOLDERS OF NOTES TO RECEIVE PAYMENT..............................................61
   SECTION 6.08       COLLECTION SUIT BY TRUSTEE.................................................................61
   SECTION 6.09       TRUSTEE MAY FILE PROOFS OF CLAIM...........................................................61
   SECTION 6.10       PRIORITIES.................................................................................62
   SECTION 6.11       UNDERTAKING FOR COSTS......................................................................62

ARTICLE 7. TRUSTEE...............................................................................................63

   SECTION 7.01       DUTIES OF TRUSTEE..........................................................................63
   SECTION 7.02       RIGHTS OF TRUSTEE..........................................................................64
   SECTION 7.03       INDIVIDUAL RIGHTS OF TRUSTEE...............................................................65
   SECTION 7.04       TRUSTEE'S DISCLAIMERS......................................................................65
   SECTION 7.05       NOTICE OF DEFAULTS.........................................................................65
   SECTION 7.06       REPORTS BY TRUSTEE TO HOLDERS OF THE NOTES.................................................65
   SECTION 7.07       COMPENSATION AND INDEMNITY.................................................................66
   SECTION 7.08       REPLACEMENT OF TRUSTEE.....................................................................66
   SECTION 7.09       SUCCESSOR TRUSTEE BY MERGER, ETC...........................................................67
   SECTION 7.10       ELIGIBILITY; DISQUALIFICATION..............................................................68
   SECTION 7.11       PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY..........................................68

ARTICLE 8. LEGAL DEFEASANCE AND COVENANT DEFEASANCE..............................................................68

   SECTION 8.01       OPTION TO EFFECT LEGAL DEFEASANCE OR COVENANT DEFEASANCE...................................68
   SECTION 8.02       LEGAL DEFEASANCE AND DISCHARGE.............................................................68
   SECTION 8.03       COVENANT DEFEASANCE........................................................................69
   SECTION 8.04       CONDITIONS TO LEGAL OR COVENANT DEFEASANCE.................................................69
   SECTION 8.05       DEPOSITED MONEY AND GOVERNMENT SECURITIES TO BE HELD IN TRUST; OTHER MISCELLANEOUS
                           PROVISIONS............................................................................70
   SECTION 8.06       REPAYMENT TO COMPANY.......................................................................71
   SECTION 8.07       REINSTATEMENT..............................................................................71

ARTICLE 9. AMENDMENT, SUPPLEMENT AND WAIVER......................................................................72

   SECTION 9.01       WITHOUT CONSENT OF HOLDERS OF NOTES........................................................72
   SECTION 9.02       WITH CONSENT OF HOLDERS OF NOTES...........................................................72

                                       ii
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   SECTION 9.03       COMPLIANCE WITH TRUST INDENTURE ACT........................................................74
   SECTION 9.04       REVOCATION AND EFFECT OF CONSENTS..........................................................74
   SECTION 9.05       NOTATION ON OR EXCHANGE OF NOTES...........................................................74
   SECTION 9.06       TRUSTEE TO SIGN AMENDMENTS, ETC............................................................74

ARTICLE 10. SUBSIDIARY GUARANTEES................................................................................75

   SECTION 10.01      AGREEMENT TO GUARANTEE.....................................................................75
   SECTION 10.02      EXECUTION AND DELIVERY OF SUBSIDIARY GUARANTEES............................................75
   SECTION 10.03      GUARANTORS MAY CONSOLIDATE, ETC. ON CERTAIN TERMS..........................................76
   SECTION 10.04      RELEASES...................................................................................77
   SECTION 10.05      NO RECOURSE AGAINST OTHERS.................................................................78
   SECTION 10.06      SUBORDINATION OF SUBSIDIARY GUARANTEES.....................................................78

ARTICLE 11. SUBORDINATION........................................................................................78

   SECTION 11.01      AGREEMENT TO SUBORDINATE...................................................................78
   SECTION 11.02      LIQUIDATION; DISSOLUTION; BANKRUPTCY.......................................................79
   SECTION 11.03      DEFAULT ON DESIGNATED SENIOR DEBT..........................................................79
   SECTION 11.04      ACCELERATION OF SECURITIES.................................................................80
   SECTION 11.05      WHEN DISTRIBUTION MUST BE PAID OVER........................................................80
   SECTION 11.06      NOTICE BY COMPANY..........................................................................81
   SECTION 11.07      SUBROGATION................................................................................81
   SECTION 11.08      RELATIVE RIGHTS............................................................................81
   SECTION 11.09      SUBORDINATION MAY NOT BE IMPAIRED BY COMPANY...............................................82
   SECTION 11.10      DISTRIBUTION OR NOTICE TO REPRESENTATIVE...................................................82
   SECTION 11.11      RIGHTS OF TRUSTEE AND PAYING AGENT.........................................................82
   SECTION 11.12      AUTHORIZATION TO EFFECT SUBORDINATION......................................................82
   SECTION 11.13      AMENDMENTS.................................................................................83

ARTICLE 12. MISCELLANEOUS........................................................................................83

   SECTION 12.01      TRUST INDENTURE ACT CONTROLS...............................................................83
   SECTION 12.02      NOTICES....................................................................................83
   SECTION 12.03      COMMUNICATIONS BY HOLDERS OF NOTES WITH OTHER HOLDERS OF NOTES.............................84
   SECTION 12.04      CERTIFICATE AND OPINION AS TO CONDITIONS PRECEDENT.........................................84
   SECTION 12.05      STATEMENTS REQUIRED IN CERTIFICATE OR OPINION..............................................84
   SECTION 12.06      RULE BY TRUSTEE AND AGENTS.................................................................85
   SECTION 12.07      NO PERSONAL LIABILITY OF DIRECTORS, OFFICERS, EMPLOYEES AND STOCKHOLDERS...................85
   SECTION 12.08      GOVERNING LAW..............................................................................85
   SECTION 12.09      NO ADVERSE INTERPRETATION OF OTHER AGREEMENTS..............................................85
   SECTION 12.10      SUCCESSORS.................................................................................85
   SECTION 12.11      SEVERABILITY...............................................................................86
   SECTION 12.12      COUNTERPART ORIGINALS......................................................................86
   SECTION 12.13      TABLE OF CONTENTS, HEADINGS, ETC...........................................................86
</TABLE>

                                      iii

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                                    EXHIBITS
                                    --------

EXHIBIT A           FORM OF NOTE

EXHIBIT B           FORM OF CERTIFICATE OF TRANSFER

EXHIBIT C           FORM OF CERTIFICATE OF EXCHANGE

EXHIBIT D           FORM OF CERTIFICATE FROM ACQUIRING
                    INSTITUTIONAL ACCREDITED INVESTORS

EXHIBIT E           FORM OF SUPPLEMENTAL INDENTURE

EXHIBIT F           FORM OF NOTATION ON SENIOR
                    SUBORDINATED NOTE RELATING TO
                    SUBSIDIARY GUARANTEE

                                       iv

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                             Cross-Reference Table*

Trust Indenture                                                   Indenture
Act Section                                                        Section
310   (a)(1).............................................           7.10
      (a)(2).............................................           7.10
      (a)(3).............................................           N.A.
      (a)(4).............................................           N.A.
      (a)(5).............................................           7.10
      (b)................................................           7.10
      (c)................................................           N.A.
311   (a)................................................           7.11
      (b)................................................           7.11
      (c)................................................           N.A.
312   (a)................................................           2.05
      (b)................................................           12.03
      (c)................................................           12.03
313   (a)................................................           7.06
      (b)(1).............................................           11.03
      (b)(2).............................................           7.07
      (c)................................................        7.06;12.02
      (d)................................................           7.06
314   (a)................................................        4.03;12.02
      (b)................................................           11.02
      (c)(1).............................................           12.04
      (c)(2).............................................           12.04
      (c)(3).............................................           N.A.
      (d)................................................    11.03, 11.04, 11.05
      (e)................................................           12.05
      (f)................................................           N.A.
315   (a)................................................           7.01
      (b)................................................        7.05, 12.02
      (c)................................................           7.01
      (d)................................................           7.01
      (e)................................................           6.11
316   (a)(last sentence).................................           2.09
      (a)(1)(A)..........................................           6.05
      (a)(1)(B)..........................................           6.04
      (a)(2).............................................           N.A.
      (b)................................................           6.07
      (c)................................................           2.12
317   (a)(1).............................................           6.08

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

*This Cross-Reference Table is not part of the Indenture.

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      (a)(2).............................................           6.09
      (b)................................................           2.04
318   (a)................................................           12.01
      (b)................................................           N.A.
      (c)................................................           12.01

N.A. means not applicable.

*This Cross-Reference Table is not part of the Indenture.

                                       vi

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     This INDENTURE, dated as of May 21, 2003, among L-3 Communications
Corporation, a Delaware corporation (the "Company"), Broadcast Sports Inc., a
Delaware corporation, Goodrich Aerospace Component Overhaul & Repair, Inc., a
Delaware corporation, Goodrich Avionics Systems, Inc., a Delaware corporation,
Henschel Inc., a Delaware corporation, Hygienetics Environmental Services, Inc.,
a Delaware corporation, KDI Precision Products, Inc., a Delaware corporation,
L-3 Communications AIS GP Corporation, a Delaware corporation, L-3
Communications Aydin Corporation, a Delaware corporation, L-3 Communications
ESSCO, Inc., a Delaware corporation, L-3 Communications ILEX Systems, Inc., a
Delaware corporation, L-3 Communications Integrated Systems L.P., a Delaware
limited partnership, L-3 Communications Investments, Inc., a Delaware
corporation, L-3 Communications Security and Detection Systems Corporation
Delaware, a Delaware corporation, L-3 Communications SPD Technologies, Inc., a
Delaware corporation, MPRI, Inc., a Delaware corporation, Pac Ord Inc., a
Delaware corporation, Power Paragon, Inc., a Delaware corporation, Ship
Analytics International, Inc., a Delaware corporation, SPD Electrical Systems,
Inc., a Delaware corporation, SPD Holdings, Inc., a Delaware corporation, SPD
Switchgear Inc., a Delaware corporation, Wescam Air Ops Inc., a Delaware
corporation, Wescam Air Ops LLC, a Delaware limited liability company, Wescam
Holdings (US) Inc., a Delaware corporation, and Wescam LLC, a Delaware limited
liability company, AMI Instruments, Inc., an Oklahoma corporation, Apcom, Inc.,
a Maryland corporation, Celerity Systems Incorporated, a California corporation,
EER Systems, Inc., a Virginia corporation, Electrodynamics, Inc., an Arizona
corporation, Goodrich FlightSystems, Inc., an Ohio corporation, Interstate
Electronics Corporation, a California corporation, L-3 Communications Analytics
Corporation, a California corporation, L-3 Communications Atlantic Science and
Technology Corporation, a New Jersey corporation, L-3 Communications IMC
Corporation, a Connecticut corporation, L-3 Communications Security and
Detection Systems Corporation California, a California corporation, L-3
Communications Storm Control Systems, Inc., a California corporation, L-3
Communications TMA Corporation, a Virginia corporation, L-3 Communications
Westwood Corporation, a Nevada corporation, MCTI Acquisition Corporation, a
Maryland corporation, Microdyne Communications Technologies Incorporated, a
Maryland corporation, Microdyne Corporation, a Maryland corporation, Microdyne
Outsourcing Incorporated, a Maryland corporation, Ship Analytics, Inc., a
Connecticut corporation, Ship Analytics USA, Inc., a Connecticut corporation,
Southern California Microwave, Inc., a California corporation, SYColeman
Corporation, a Florida corporation, Telos Corporation, a California corporation,
Troll Technology Corporation, a California corporation, Wescam Incorporated, a
Florida corporation, Wescam Sonoma Inc., a California corporation and Wolf
Coach, Inc., a Massachusetts corporation (collectively, the "Guarantors"), and
The Bank of New York, as trustee (the "Trustee").

     The Company and the Trustee agree as follows for the benefit of each other
and for the equal and ratable benefit of the Holders of the 6-1/8% Senior
Subordinated Notes due 2013 (the "Series A Notes") and the 6-1/8% Senior
Subordinated Notes due 2013 (the "Exchange Notes" and, together with the Series
A Notes, the "Notes"):
<PAGE>

                                   ARTICLE 1.
                          DEFINITIONS AND INCORPORATION
                                  BY REFERENCE

Section 1.01      Definitions.

                  "144A Global Note" means the global note in the form of
Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend
and deposited with and registered in the name of the Depositary or its nominee
that will be issued in a denomination equal to the outstanding principal amount
of the Notes sold in reliance on Rule 144A.

                  "2000 Convertible Notes" means the $300,000,000 in aggregate
principal amount of Holdings' 5.25% Convertible Senior Subordinated Notes due
2009, issued pursuant to the 2000 Convertible Note Indenture in November and
December of 2000 and guaranteed by the Company and the other guarantors thereof.

                  "2000 Convertible Note Indenture" means the indenture, dated
as of November 21, 2000, among The Bank of New York, as trustee, Holdings, the
Company, as a guarantor, and the other guarantors party thereto, with respect to
the 2000 Convertible Notes.

                  "2001 CODES" means the $420,000,000 in aggregate principal
amount of Holdings' 4.00% Senior Subordinated Convertible Contingent Debt
Securities (CODES) due 2011, issued pursuant to the 2001 CODES Indenture in
October and November 2001 and guaranteed by the Company and the other guarantors
thereof.

                  "2001 CODES Indenture" means the indenture, dated as of
October 24, 2001, among The Bank of New York, as trustee, Holdings, the Company,
as a guarantor, and the other guarantors party thereto, with respect to the 2001
CODES.

                  "2002 Indenture" means the indenture, dated as of June 28,
2002, among The Bank of New York, as trustee, the Company and the guarantors
party thereto, with respect to the 2002 Notes.

                  "2002 Notes" means the $750,000,000 in aggregate principal
amount of the Company's 7-5/8% Senior Subordinated Notes due 2012, issued
pursuant to the 2002 Indenture on June 28, 2002.

                  "Acquired Debt" means, with respect to any specified Person,
(i) Indebtedness of any other Person existing at the time such other Person is
merged with or into or became a Restricted Subsidiary of such specified Person,
including, without limitation, Indebtedness incurred in connection with, or in
contemplation of, such other Person merging with or into or becoming a
Restricted Subsidiary of such specified Person, and (ii) Indebtedness secured by
a Lien encumbering any asset acquired by such specified Person.

                  "Additional Amounts" means all additional amounts then owing
pursuant to Section 5 of the Registration Rights Agreement.

                                       2
<PAGE>

                  "Additional Notes" means any Notes (other than the Initial
Notes) issued under this Indenture in accordance with Sections 2.02 and 4.09
hereof.

                  "Affiliate" of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified Person. For purposes of this definition,
"control" (including, with correlative meanings, the terms "controlling",
"controlled by" and "under common control with"), as used with respect to any
Person, shall mean the possession, directly or indirectly, of the power to
direct or cause the direction of the management or policies of such Person,
whether through the ownership of voting securities, by agreement or otherwise;
provided that beneficial ownership of 10% or more of the voting securities of a
Person shall be deemed to be control.

                  "Agent" means any Registrar, Paying Agent or co-registrar.

                  "Applicable Procedures" means, with respect to any transfer or
exchange of or for beneficial interests in any Global Note, the rules and
procedures of the Depositary, Euroclear and Clearstream that apply to such
transfer or exchange.

                  "Asset Sale" means (i) the sale, lease, conveyance or other
disposition of any assets or rights (including, without limitation, by way of a
sale and leaseback) other than sales of inventory in the ordinary course of
business (provided that the sale, lease, conveyance or other disposition of all
or substantially all of the assets of the Company and its Restricted
Subsidiaries taken as a whole shall be governed by the covenant contained in
Section 4.15 and/or the covenant contained in Section 5.01 and not by the
covenant contained in Section 4.10), and (ii) the issue or sale by the Company
or any of its Subsidiaries of Equity Interests of any of the Company's
Restricted Subsidiaries, in the case of either clause (i) or (ii), whether in a
single transaction or a series of related transactions (A) that have a fair
market value in excess of $5.0 million or (B) for net proceeds in excess of $5.0
million. Notwithstanding the foregoing: (i) a transfer of assets by the Company
to a Restricted Subsidiary or by a Restricted Subsidiary to the Company or to
another Restricted Subsidiary, (ii) an issuance of Equity Interests by a
Restricted Subsidiary to the Company or to another Restricted Subsidiary, (iii)
a Restricted Payment that is permitted by the covenant contained in Section 4.07
and (iv) a disposition of Cash Equivalents in the ordinary course of business
shall not be deemed to be an Asset Sale.

                  "Attributable Debt" in respect of a sale and leaseback
transaction means, at the time of determination, the present value (discounted
at the rate of interest implicit in such transaction, determined in accordance
with GAAP) of the obligation of the lessee for net rental payments during the
remaining term of the lease included in such sale and leaseback transaction
(including any period for which such lease has been extended or may, at the
option of the lessor, be extended).

                  "Bankruptcy Law" means Title 11, U.S. Code or any similar
federal or state law for the relief of debtors.

                  "Board of Directors" means the Board of Directors of the
Company, or any authorized committee of the Board of Directors.

                  "Broker-Dealer" has the meaning set forth in the Registration
Rights Agreement.

                                       3
<PAGE>

                  "Business Day" means any day other than a Legal Holiday.

                  "Capital Lease Obligation" means, at the time any
determination thereof is to be made, the amount of the liability in respect of a
capital lease that would at such time be required to be capitalized on a balance
sheet in accordance with GAAP.

                  "Capital Stock" means (i) in the case of a corporation,
corporate stock, (ii) in the case of an association or business entity, any and
all shares, interests, participations, rights or other equivalents (however
designated) of corporate stock, (iii) in the case of a partnership or limited
liability company, partnership or membership interests (whether general or
limited) and (iv) any other interest or participation that confers on a Person
the right to receive a share of the profits and losses of, or distributions of
assets of, the issuing Person.

                  "Cash Equivalents" means (i) United States dollars, (ii)
securities issued or directly and fully guaranteed or insured by the United
States government or any agency or instrumentality thereof having maturities of
not more than one year from the date of acquisition, (iii) certificates of
deposit and eurodollar time deposits with maturities of six months or less from
the date of acquisition, bankers' acceptances with maturities not exceeding six
months and overnight bank deposits, in each case with any domestic financial
institution to the Senior Credit Facilities or with any domestic commercial bank
having capital and surplus in excess of $500.0 million and a Thompson Bank Watch
Rating of "B" or better, (iv) repurchase obligations with a term of not more
than seven days for underlying securities of the types described in clauses (ii)
and (iii) above entered into with any financial institution meeting the
qualifications specified in clause (iii) above, (v) commercial paper having the
highest rating obtainable from Moody's or S&P and in each case maturing within
six months after the date of acquisition, (vi) investment funds investing 95% of
their assets in securities of the types described in clauses (i)-(v) above, and
(vii) readily marketable direct obligations issued by any State of the United
States of America or any political subdivision thereof having maturities of not
more than one year from the date of acquisition and having one of the two
highest rating categories obtainable from either Moody's or S&P.

                  "Change of Control" means the occurrence of any of the
following: (i) 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 the Company and its
Restricted Subsidiaries 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 (as defined below), (ii) the adoption of a plan relating to the
liquidation or dissolution of the Company, (iii) 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" (as such
term is defined in Rule 13d-3 and Rule 13d-5 under the Exchange Act), directly
or indirectly, of more than 50% of the Voting Stock of the Company (measured by
voting power rather than number of shares) or (iv) the first day on which a
majority of the members of the Board of Directors of the Company are not
Continuing Directors.

                  "Clearstream" means Clearstream Banking, societe anonyme
(formerly Cedelbank).

                                       4
<PAGE>

                  "Consolidated Cash Flow" means, with respect to any Person for
any period, the Consolidated Net Income of such Person for such period plus (i)
an amount equal to any extraordinary loss plus any net loss realized in
connection with an Asset Sale (to the extent such losses were deducted in
computing such Consolidated Net Income), plus (ii) provision for taxes based on
income or profits of such Person and its Restricted Subsidiaries for such
period, to the extent that such provision for taxes was included in computing
such Consolidated Net Income, plus (iii) consolidated interest expense of such
Person and its Restricted Subsidiaries for such period, whether paid or accrued
and whether or not capitalized (including, without limitation, original issue
discount, non-cash interest payments, the interest component of any deferred
payment obligations, the interest component of all payments associated with
Capital Lease Obligations, imputed interest with respect to Attributable Debt,
commissions, discounts and other fees and charges incurred in respect of letter
of credit or bankers' acceptance financings, and net payments (if any) pursuant
to Hedging Obligations), to the extent that any such expense was deducted in
computing such Consolidated Net Income, plus (iv) depreciation, amortization
(including amortization of goodwill, debt issuance costs and other intangibles
but excluding amortization of other prepaid cash expenses that were paid in a
prior period) and other non-cash expenses (excluding any such non-cash expense
to the extent that it represents an accrual of or reserve for cash expenses in
any future period or amortization of a prepaid cash expense that was paid in a
prior period) of such Person and its Restricted Subsidiaries for such period to
the extent that such depreciation, amortization and other non-cash expenses were
deducted in computing such Consolidated Net Income, minus (v) non-cash items
(excluding any items that were accrued in the ordinary course of business)
increasing such Consolidated Net Income for such period, in each case, on a
consolidated basis and determined in accordance with GAAP.

                  "Consolidated Net Income" means, with respect to any Person
for any period, the aggregate of the Net Income of such Person and its
Restricted Subsidiaries for such period, on a consolidated basis, determined in
accordance with GAAP; provided that (i) the Net Income of any Person that is not
a Restricted Subsidiary or that is accounted for by the equity method of
accounting shall be included only to the extent of the amount of dividends or
distributions paid in cash to the referent Person or a Restricted Subsidiary
thereof, (ii) the Net Income of any Restricted Subsidiary shall be excluded to
the extent that the declaration or payment of dividends or similar distributions
by that Restricted Subsidiary of that Net Income is not at the date of
determination permitted without any prior governmental approval (that has not
been obtained) or, directly or indirectly, by operation of the terms of its
charter or any agreement, instrument, judgment, decree, order, statute, rule or
governmental regulation applicable to that Restricted Subsidiary or its
stockholders, (iii) the Net Income of any Person acquired in a pooling of
interests transaction for any period prior to the date of such acquisition shall
be excluded, (iv) the cumulative effect of a change in accounting principles
shall be excluded, (v) the Net Income of any Unrestricted Subsidiary shall be
excluded, whether or not distributed to the Company or one of its Restricted
Subsidiaries, and (vi) the Net Income of any Restricted Subsidiary shall be
calculated after deducting preferred stock dividends payable by such Restricted
Subsidiary to Persons other than the Company and its other Restricted
Subsidiaries.

                  "Consolidated Tangible Assets" means, with respect to the
Company, the total consolidated assets of the Company and its Restricted
Subsidiaries, less the total intangible assets of the Company and its Restricted
Subsidiaries, as shown on the most recent internal

                                       5
<PAGE>

consolidated balance sheet of the Company and such Restricted Subsidiaries
calculated on a consolidated basis in accordance with GAAP.

                  "Continuing Directors" means, as of any date of determination,
any member of the Board of Directors of the Company who (i) was a member of such
Board of Directors on the date of this Indenture or (ii) was nominated for
election or elected to such Board of Directors with the approval of a majority
of the Continuing Directors who were members of such Board at the time of such
nomination or election.

                  "Corporate Trust Office of the Trustee" shall be at the
address of the Trustee specified in Section 12.02 hereof or such other address
as to which the Trustee may give notice to the Company.

                  "Credit Facilities" means, with respect to the Company, one or
more debt facilities (including, without limitation, the Senior Credit
Facilities) or commercial paper facilities with banks or other institutional
lenders providing for revolving credit loans, term loans, receivables financing
(including through the sale of receivables to such lenders or to special purpose
entities formed to borrow from such lenders against such receivables) or letters
of credit, in each case, as amended, restated, modified, renewed, refunded,
replaced or refinanced in whole or in part from time to time.

                  "December 1998 Indenture" means the indenture, dated as of
December 11, 1998, among The Bank of New York, as trustee, the Company and the
guarantors party thereto, with respect to the December 1998 Notes.

                  "December 1998 Notes" means the $200,000,000 in aggregate
principal amount of the Company's 8% Senior Subordinated Notes due 2008, issued
pursuant to the December 1998 Indenture on December 11, 1998.

                  "Default" means any event that is, or with the passage of time
or the giving of notice or both would be, an Event of Default.

                  "Definitive Note" means a certificated Note registered in the
name of the Holder thereof and issued in accordance with Article 2 hereof,
substantially in the form of Exhibit A hereto, except that such Note shall not
bear the Global Note Legend and shall not have the "Schedule of Exchanges of
Interests in the Global Note" attached thereto.

                  "Depositary" means, with respect to the Notes issuable or
issued in whole or in part in global form, the Person specified in Section 2.03
hereof as the Depositary with respect to the Notes, until a successor shall have
been appointed and become such pursuant to the applicable provision of this
Indenture, and, thereafter, "Depositary" shall mean or include such successor.

                  "Designated Senior Debt" means (i) any Indebtedness
outstanding under the Senior Credit Facilities and (ii) 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 the Company as "Designated Senior Debt".

                                       6
<PAGE>

                  "Disqualified Stock" means any Capital Stock that, by its
terms (or by the terms of any security into which it is convertible, or for
which it is exchangeable, at the option of the holder thereof), or upon the
happening of any event, matures or is mandatorily redeemable, pursuant to a
sinking fund obligation or otherwise, or redeemable at the option of the Holder
thereof, in whole or in part, on or prior to the date that is 91 days after the
date on which the Notes mature; provided, however, that any Capital Stock that
would constitute Disqualified Stock solely because the holders thereof have the
right to require the Company to repurchase such Capital Stock upon the
occurrence of a Change of Control or an Asset Sale shall not constitute
Disqualified Stock if the terms of such Capital Stock provide that the Company
may not repurchase or redeem any such Capital Stock pursuant to such provisions
unless such repurchase or redemption complies with Section 4.07 hereof; and
provided further, that if such Capital Stock is issued to any plan for the
benefit of employees of the Company or its Subsidiaries or by any such plan to
such employees, such Capital Stock shall not constitute Disqualified Stock
solely because it may be required to be repurchased by the Company in order to
satisfy applicable statutory or regulatory obligations.

                  "Equity Interests" means Capital Stock and all warrants,
options or other rights to acquire Capital Stock (but excluding any debt
security that is convertible into, or exchangeable for, Capital Stock).

                  "Equity Offering" means any public or private sale of equity
securities (excluding Disqualified Stock) of the Company or Holdings, other than
any private sales to an Affiliate of the Company or Holdings.

                  "Euroclear" means Morgan Guaranty Trust Company of New York,
Brussels office, as operator of the Euroclear system.

                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

                  "Exchange Notes" means the Notes issued in the Exchange Offer
pursuant to Section 2.06(f).

                  "Exchange Offer" has the meaning set forth in the Registration
Rights Agreement.

                  "Exchange Offer Registration Statement" has the meaning set
forth in the Registration Rights Agreement.

                  "Existing Indebtedness" means any Indebtedness of the Company
and its Restricted Subsidiaries (other than Indebtedness under the Senior Credit
Facilities and the Notes) in existence on the date of the Indenture, until such
amounts are repaid.

                  "Fixed Charges" means, with respect to any Person for any
period, the sum, without duplication, of (i) the consolidated interest expense
of such Person and its Restricted Subsidiaries for such period, whether paid or
accrued (including, without limitation, original issue discount, non-cash
interest payments, the interest component of any deferred payment obligations,
the interest component of all payments associated with Capital Lease
Obligations, imputed interest with respect to Attributable Debt, commissions,
discounts and other fees and charges incurred in respect of letter of credit or
bankers' acceptance financings, and net

                                       7
<PAGE>

payments (if any) pursuant to Hedging Obligations, but excluding amortization of
debt issuance costs) and (ii) the consolidated interest of such Person and its
Restricted Subsidiaries that was capitalized during such period, and (iii) any
interest expense on Indebtedness of another Person that is guaranteed by such
Person or one of its Restricted Subsidiaries or secured by a Lien on assets of
such Person or one of its Restricted Subsidiaries (whether or not such Guarantee
or Lien is called upon) and (iv) the product of (A) all dividend payments,
whether or not in cash, on any series of preferred stock of such Person or any
of its Restricted Subsidiaries, other than dividend payments on Equity Interests
payable solely in Equity Interests of the Company, times (B) a fraction, the
numerator of which is one and the denominator of which is one minus the then
current combined federal, state and local statutory tax rate of such Person,
expressed as a decimal, in each case, on a consolidated basis and in accordance
with GAAP.

                  "Fixed Charge Coverage Ratio" means with respect to any Person
for any period, the ratio of the Consolidated Cash Flow of such Person for such
period to the Fixed Charges of such Person and its Restricted Subsidiaries for
such period. In the event that the Company or any of its Restricted Subsidiaries
incurs, assumes, Guarantees or redeems any Indebtedness (other than revolving
credit borrowings) or issues preferred stock subsequent to the commencement of
the period for which the Fixed Charge Coverage Ratio is being calculated but on
or prior to the date on which the event for which the calculation of the Fixed
Charge Coverage Ratio is made (the "Calculation Date"), then the Fixed Charge
Coverage Ratio shall be calculated giving pro forma effect to such incurrence,
assumption, Guarantee or redemption of Indebtedness, or such issuance or
redemption of preferred stock, as if the same had occurred at the beginning of
the applicable four-quarter reference period. In addition, for purposes of
making the computation referred to above, (i) acquisitions that have been made
by the Company or any of its Restricted Subsidiaries, including through mergers
or consolidations and including any related financing transactions, during the
four-quarter reference period or subsequent to such reference period and on or
prior to the Calculation Date shall be deemed to have occurred on the first day
of the four-quarter reference period and Consolidated Cash Flow for such
reference period shall be calculated without giving effect to clause (iii) of
the proviso set forth in the definition of Consolidated Net Income, (ii) the
Consolidated Cash Flow attributable to discontinued operations, as determined in
accordance with GAAP, and operations or businesses disposed of prior to the
Calculation Date, shall be excluded, and (iii) the Fixed Charges attributable to
discontinued operations, as determined in accordance with GAAP, and operations
or businesses disposed of prior to the Calculation Date, shall be excluded, but
only to the extent that the obligations giving rise to such Fixed Charges will
not be obligations of the referent Person or any of its Restricted Subsidiaries
following the Calculation Date.

                  "Foreign Subsidiary" means a Restricted Subsidiary of the
Company that was not organized or existing under the laws of the United States,
any state thereof, the District of Columbia or any territory thereof or that has
not guaranteed or otherwise provided direct credit support for any Indebtedness
of the Company.

                  "GAAP" means generally accepted accounting principles set
forth in the opinions and pronouncements of the Accounting Principles Board of
the American Institute of Certified Public Accountants and statements and
pronouncements of the Financial Accounting Standards Board or in such other
statements by such other entity as have been approved by a significant segment
of the accounting profession, which were in effect on April 30, 1997.

                                       8
<PAGE>

                  "Global Notes" means, individually and collectively, each of
the Restricted Global Notes and the Unrestricted Global Notes, substantially in
the form of Exhibit A hereto issued in accordance with Article 2 hereof.

                  "Global Note Legend" means the legend set forth in Section
2.06(g)(ii) to be placed on all Global Notes issued under this Indenture.

                  "Government Securities" means direct obligations of, or
obligations guaranteed by, the United States of America for the payment of which
guarantee or obligations the full faith and credit of the United States is
pledged.

                  "Guarantee" means a guarantee (other than by endorsement of
negotiable instruments for collection in the ordinary course of business),
direct or indirect, in any manner (including, without limitation, letters of
credit and reimbursement agreements in respect thereof), of all or any part of
any Indebtedness.

                  "Guarantors" means each Person listed in the preamble to the
Indenture and each Subsidiary of the Company that executes a Subsidiary
Guarantee in accordance with the provisions of the Indenture, and their
respective successors and assigns.

                  "Hedging Obligations" means, with respect to any Person, the
obligations of such Person under (i) currency exchange or interest rate swap
agreements, interest rate cap agreements and currency exchange or interest rate
collar agreements and (ii) other agreements or arrangements designed to protect
such Person against fluctuations in currency exchange rates or interest rates.

                  "Holder" means a Person in whose name a Note is registered.

                  "Holdings" means L-3 Communications Holdings, Inc., a Delaware
corporation.

                  "IAI Global Note" means the global Note in the form of Exhibit
A hereto bearing the Global Note Legend and the Private Placement Legend and
deposited with and registered in the name of the Depositary or its nominee that
will be issued in a denomination equal to the outstanding principal amount of
the Notes sold to Institutional Accredited Investors.

                  "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 asset 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
(i) the accreted value thereof, in the case of any Indebtedness that does not
require current payments of interest, and (ii) the

                                       9
<PAGE>

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

                  "Indenture" means this Indenture, as amended or supplemented
from time to time.

                  "Indirect Participant" means a Person who holds a beneficial
interest in a Global Note through a Participant.

                  "Initial Notes" means $400.0 million in aggregate principal
amount of Notes issued under this Indenture on the date hereof.

                  "Institutional Accredited Investor" means an institution that
is an "accredited investor" as defined in Rule 501(a)(1), (2), (3) or (7) under
the Securities Act.

                  "Investments" means, with respect to any Person, all
investments by such Person in other Persons (including Affiliates) in the forms
of direct or indirect loans (including guarantees of Indebtedness or other
obligations), advances or capital contributions (excluding commission, travel,
moving and similar loans or advances to officers and employees made in the
ordinary course of business), purchases or other acquisitions for consideration
of Indebtedness, Equity Interests or other securities, together with all items
that are or would be classified as investments on a balance sheet prepared in
accordance with GAAP. If the Company or any Restricted Subsidiary of the Company
sells or otherwise disposes of any Equity Interests of any direct or indirect
Restricted Subsidiary of the Company such that, after giving effect to any such
sale or disposition, such Person is no longer a Subsidiary of the Company, the
Company shall be deemed to have made an Investment on the date of any such sale
or disposition equal to the fair market value of the Equity Interests of such
Subsidiary not sold or disposed of in an amount determined as provided in the
last paragraph of the covenant contained in Section 4.07.

                  "Legal Holiday" means a Saturday, a Sunday or a day on which
banking institutions in The City of New York or at a place of payment are
authorized by law, regulation or executive order to remain closed. If a payment
date is a Legal Holiday at a place of payment, payment may be made at that place
on the next succeeding day that is not a Legal Holiday, and no interest shall
accrue for the intervening period.

                  "Lehman Investor" means Lehman Brothers Holdings Inc. and any
of its Affiliates.

                  "Letter of Transmittal" means the letter of transmittal to be
prepared by the Company and sent to all Holders of the Series A Notes for use by
such Holders in connection with the Exchange Offer.

                  "Lien" means, with respect to any asset, any mortgage, lien,
pledge, charge, security interest or encumbrance of any kind in respect of such
asset, whether or not filed, recorded or otherwise perfected under applicable
law (including any conditional sale or other title retention agreement, any
lease in the nature thereof, any option or other agreement to sell or give a
security interest in and any filing of or agreement to give any financing
statement under the Uniform Commercial Code (or equivalent statutes) of any
jurisdiction).

                                       10
<PAGE>

                  "Marketable Securities" means, with respect to any Asset Sale,
any readily marketable equity securities that are (i) traded on The New York
Stock Exchange, the American Stock Exchange or the Nasdaq National Market; and
(ii) issued by a corporation having a total equity market capitalization of not
less than $250.0 million; provided that the excess of (A) the aggregate amount
of securities of any one such corporation held by the Company and any Restricted
Subsidiary over (B) ten times the average daily trading volume of such
securities during the 20 immediately preceding trading days shall be deemed not
to be Marketable Securities; as determined on the date of the contract relating
to such Asset Sale.

                  "May 1998 Notes" means the $180,000,000 in aggregate principal
amount of the Company's 8 1/2% Senior Subordinated Notes due 2008, issued
pursuant to the May 1998 Indenture on May 22, 1998.

                  "May 1998 Indenture" means the indenture, dated as of May 22,
1998, among The Bank of New York, as trustee, the Company and the guarantors
party thereto, with respect to the May 1998 Notes.

                  "Moody's" means Moody's Investors Services, Inc.

                  "Net Income" means, with respect to any Person, the net income
(loss) of such Person, determined in accordance with GAAP and before any
reduction in respect of preferred stock dividends, excluding, however, (i) any
gain or loss, together with any related provision for taxes thereon, realized in
connection with (A) any Asset Sale (including, without limitation, dispositions
pursuant to sale and leaseback transactions) or (B) the disposition of any
securities by such Person or any of its Restricted Subsidiaries or the
extinguishment of any Indebtedness of such Person or any of its Restricted
Subsidiaries and (ii) any extraordinary gain or loss, together with any related
provision for taxes on such extraordinary gain or loss and (iii) the cumulative
effect of a change in accounting principles.

                  "Net Proceeds" means the aggregate cash proceeds received by
the Company or any of its Subsidiaries in respect of any Asset Sale (including,
without limitation, any cash received upon the sale or other disposition of any
non-cash consideration received in any Asset Sale), net of the direct costs
relating to such Asset Sale (including, without limitation, legal, accounting
and investment banking fees, and sales commissions) and any relocation expenses
incurred as a result thereof, taxes paid or payable as a result thereof (after
taking into account any available tax credits or deductions and any tax sharing
arrangements), amounts required to be applied to the repayment of Indebtedness
secured by a Lien on the asset or assets that were the subject of such Asset
Sale and any reserve for adjustment in respect of the sale price of such asset
or assets established in accordance with GAAP.

                  "Non-Recourse Debt" means Indebtedness (i) as to which neither
the Company nor any of its Restricted Subsidiaries (A) provides credit support
of any kind (including any undertaking, agreement or instrument that would
constitute Indebtedness), (B) is directly or indirectly liable (as a guarantor
or otherwise), or (C) constitutes the lender; and (ii) no default with respect
to which (including any rights that the holders thereof may have to take
enforcement action against an Unrestricted Subsidiary) would permit (upon
notice, lapse of time or both) any holder of any other Indebtedness (other than
Indebtedness incurred under Credit Facilities) of the

                                       11
<PAGE>

Company or any of its Restricted Subsidiaries to declare a default on such other
Indebtedness or cause the payment thereof to be accelerated or payable prior to
its stated maturity; and (iii) as to which the lenders have been notified in
writing that they will not have any recourse to the stock or assets of the
Company or any of its Restricted Subsidiaries.

                  "Non-U.S. Person" means a person who is not a U.S. Person.

                  "Note Custodian" means the Trustee, as custodian with respect
to the Notes in global form, or any successor entity thereto.

                  "Notes" has the meaning assigned to it in the preamble to this
Indenture. The Initial Notes and the Additional Notes shall be treated as a
single class for all purposes under this Indenture, and unless the context
otherwise requires, all references to the Notes shall include the Initial Notes
and any Additional Notes.

                  "Obligations" means any principal, premium and Additional
Amounts (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, indemnifications, reimbursement obligations, damages, guarantees and
other liabilities or amounts payable under the documentation governing any
Indebtedness or in respect thereto.

                  "Offering" means the offering of the Notes by the Company.

                  "Officer" means, with respect to any Person, the Chairman of
the Board, the Chief Executive Officer, the President, the Chief Operating
Officer, the Chief Financial Officer, the Treasurer, any Assistant Treasurer,
the Controller, the Secretary, any Assistant Secretary or any Vice-President of
such Person.

                  "Officers' Certificate" means a certificate signed on behalf
of the Company by two Officers of the Company, one of whom must be the principal
executive officer, the principal financial officer, the treasurer or the
principal accounting officer of the Company, that meets the requirements of
Section 12.05 hereof.

                  "Opinion of Counsel" means an opinion from legal counsel who
is reasonably acceptable to the Trustee, that meets the requirements of Section
12.05 hereof. The counsel may be an employee of or counsel to the Company, any
Subsidiary of the Company or the Trustee.

                  "Participant" means, with respect to DTC, Euroclear or
Clearstream, a Person who has an account with DTC, Euroclear or Clearstream,
respectively (and, with respect to DTC, shall include Euroclear and
Clearstream).

                  "Permitted Investment" means (i) any Investment in the Company
or in a Restricted Subsidiary of the Company that is a Guarantor; (ii) any
Investment in cash or Cash Equivalents; (iii) any Investment by the Company or
any Restricted Subsidiary of the Company in a Person, if as a result of such
Investment (A) such Person becomes a Restricted Subsidiary of the Company and a
Guarantor or (B) such Person is merged, consolidated or amalgamated with or
into, or transfers or conveys substantially all of its assets to, or is
liquidated into, the Company

                                       12
<PAGE>

or a Restricted Subsidiary of the Company that is a Guarantor; (iv) any
Restricted Investment made as a result of the receipt of non-cash consideration
from an Asset Sale that was made pursuant to and in compliance with Section 4.10
or any disposition of assets not constituting an Asset sale; (v) any acquisition
of assets solely in exchange for the issuance of Equity Interests (other than
Disqualified Stock) of the Company; (vi) advances to employees not to exceed
$2.5 million at any one time outstanding; (vii) any Investment acquired in
connection with or as a result of a workout or bankruptcy of a customer or
supplier; (viii) Hedging Obligations permitted to be incurred under Section
4.09; (ix) any Investment in a Similar Business that is not a Restricted
Subsidiary; provided that the aggregate fair market value of all Investments
outstanding pursuant to this clause (ix) (valued on the date each such
Investment was made and without giving effect to subsequent changes in value)
may not at any one time exceed 10% of the Consolidated Tangible Assets of the
Company; and (x) other Investments in any Person having an aggregate fair market
value (measured on the date each such Investment was made and without giving
effect to subsequent changes in value), when taken together with all other
Investments made pursuant to this clause (x) that are at the time outstanding,
not to exceed $30.0 million.

                  "Permitted Joint Venture" means any joint venture, partnership
or other Person designated by the Board of Directors (until designation by the
Board of Directors to the contrary); provided that (i) at least 25% of the
Capital Stock thereof with voting power under ordinary circumstances to elect
directors (or Persons having similar or corresponding powers and
responsibilities) is at the time owned (beneficially or directly) by the Company
and/or by one or more Restricted Subsidiaries of the Company and (ii) such joint
venture, partnership or other Person is engaged in a Similar Business. Any such
designation or designation to the contrary shall be evidenced to the Trustee by
promptly filing with the Trustee a copy of the resolution giving effect to such
designation and an Officers' Certificate certifying that such designation
complied with the foregoing provisions.

                  "Permitted Junior Securities" means Equity Interests in the
Company or debt securities that are subordinated to all Senior Debt (and any
debt securities issued in exchange for Senior Debt) to substantially the same
extent as, or to a greater extent than, the Notes and the Subsidiary Guarantees
are subordinated to Senior Debt pursuant to Article 11 of this Indenture.

                  "Permitted Liens" means (i) Liens securing Senior Debt of the
Company or any Guarantor that was permitted by the terms of this Indenture to be
incurred; (ii) Liens in favor of the Company or any Guarantor; (iii) Liens on
property of a Person existing at the time such Person is merged into or
consolidated with the Company or any Restricted Subsidiary of the Company;
provided that such Liens were in existence prior to the contemplation of such
merger or consolidation and do not extend to any assets other than those of the
Person merged into or consolidated with the Company; (iv) Liens on property
existing at the time of acquisition thereof by the Company or any Subsidiary of
the Company, provided that such Liens were in existence prior to the
contemplation of such acquisition and do not extend to any other assets of the
Company or any of its Restricted Subsidiaries; (v) Liens to secure the
performance of statutory obligations, surety or appeal bonds, performance bonds
or other obligations of a like nature incurred in the ordinary course of
business; (vi) Liens to secure Indebtedness (including Capital Lease
Obligations) permitted by clause (iv) of the second paragraph of Section 4.09
covering only the assets acquired with such Indebtedness; (vii) Liens existing
on the date of this

                                       13
<PAGE>

Indenture; (viii) Liens for taxes, assessments or governmental charges or claims
that are not yet delinquent or that are being contested in good faith by
appropriate proceedings promptly instituted and diligently concluded, provided
that any reserve or other appropriate provision as shall be required in
conformity with GAAP shall have been made therefor; (ix) Liens incurred in the
ordinary course of business of the Company or any Restricted Subsidiary of the
Company with respect to obligations that do not exceed $50.0 million at any one
time outstanding; (x) Liens on assets of Guarantors to secure Senior Debt of
such Guarantors that was permitted by this Indenture to be incurred; (xi) Liens
securing Permitted Refinancing Indebtedness, provided that any such Lien does
not extend to or cover any property, shares or debt other than the property,
shares or debt securing the Indebtedness so refunded, refinanced or extended;
(xii) Liens incurred or deposits made to secure the performance of tenders,
bids, leases, statutory obligations, surety and appeal bonds, government
contracts, performance and return of money bonds and other obligations of a like
nature, in each case incurred in the ordinary course of business (exclusive of
obligations for the payment of borrowed money); (xiii) Liens upon specific items
of inventory or other goods and proceeds of any Person securing such Person's
obligations in respect of bankers' acceptances issued or created for the account
of such Person to facilitate the purchase, shipment or storage of such inventory
or other goods in the ordinary course of business; (xiv) Liens encumbering
customary initial deposits and margin deposits, and other Liens incurred in the
ordinary course of business that are within the general parameters customary in
the industry, in each case securing Indebtedness under Hedging Obligations; and
(xv) Liens encumbering deposits made in the ordinary course of business to
secure nondelinquent obligations arising from statutory or regulatory,
contractual or warranty requirements of the Company or its Subsidiaries for
which a reserve or other appropriate provision, if any, as shall be required by
GAAP shall have been made.

                  "Permitted Refinancing Indebtedness" means any Indebtedness of
the Company or any of its Subsidiaries issued in exchange for, or the net
proceeds of which are used to extend, refinance, renew, replace, defease or
refund other Indebtedness of the Company or any of its Restricted Subsidiaries;
provided that: (i) the principal amount (or accreted value, if applicable) of
such Permitted Refinancing Indebtedness does not exceed the principal amount of
(or accreted value, if applicable), plus accrued interest on, the Indebtedness
so extended, refinanced, renewed, replaced, defeased or refunded (plus the
amount of reasonable expenses and prepayment premiums incurred in connection
therewith); (ii) such Permitted Refinancing Indebtedness has a final maturity
date no earlier than the final maturity date of, and has a Weighted Average Life
to Maturity equal to or greater than the Weighted Average Life to Maturity of,
the Indebtedness being extended, refinanced, renewed, replaced, defeased or
refunded; (iii) if the Indebtedness being extended, refinanced, renewed,
replaced, defeased or refunded is subordinated in right of payment to the Notes,
such Permitted Refinancing Indebtedness is subordinated in right of payment to
the Notes on terms at least as favorable to the Holders of Notes as those
contained in the documentation governing the Indebtedness being extended,
refinanced, renewed, replaced, defeased or refunded; and (iv) such Indebtedness
is incurred either by the Company or by the Restricted Subsidiary who is the
obligor on the Indebtedness being extended, refinanced, renewed, replaced,
defeased or refunded.

                  "Permitted Securities" means, with respect to any Asset Sale,
Voting Stock of a Person primarily engaged in one or more Similar Businesses;
provided that after giving effect to the Asset Sale such Person shall become a
Restricted Subsidiary and, unless the Asset Sale

                                       14
<PAGE>

relates to a Foreign Subsidiary, a Guarantor (to the extent required by the
terms of this Indenture).

                  "Person" means any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization or
government or agency or political subdivision thereof (including any subdivision
or ongoing business of any such entity or substantially all of the assets of any
such entity, subdivision or business).

                  "Principals" means any Lehman Investor, Frank C. Lanza and
Robert V. LaPenta.

                  "Private Placement Legend" means the legend set forth in
Section 2.06(g)(i) to be placed on all Notes issued under this Indenture except
as otherwise permitted by the provisions of this Indenture.

                  "Purchase Agreement" means the Purchase Agreement, dated as of
May 14, 2003, among the Company, the Guarantors, Lehman Brothers Inc., Morgan
Stanley & Co. Incorporated, Banc of America Securities LLC and Credit Suisse
First Boston LLC, as representatives of the several initial purchasers named
therein.

                  "QIB" means a "qualified institutional buyer" as defined in
Rule 144A.

                  "Registration Rights Agreement" means the Debt Registration
Rights Agreement, dated as of the date hereof, by and among the Company and the
other parties named on the signature pages thereof, as such agreement may be
amended, modified or supplemented from time to time and, with respect to any
Additional Notes, one or more registration rights agreements between the Company
and the other parties thereto, as such agreement(s) may be amended, modified or
supplemented from time to time, relating to rights given by the Company to the
purchasers of Additional Notes to register such Additional Notes under the
Securities Act.

                  "Regulation S" means Regulation S promulgated under the
Securities Act.

                  "Regulation S Global Note" means a global Note bearing the
Private Placement Legend and deposited with and registered in the name of the
Depositary or its nominee that will be issued in a denomination equal to the
outstanding principal amount of the Notes sold in reliance on Regulation S.

                  "Related Party" with respect to any Principal means (i) any
controlling stockholder, 50% (or more) owned Subsidiary, or spouse or immediate
family member (in the case of an individual) of such Principal or (ii) 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 in the immediately preceding clause (i).

                  "Representative" means the indenture trustee or other trustee,
agent or representative for any Senior Debt.

                  "Responsible Officer" when used with respect to the Trustee,
means any officer within the Corporate Trust Administration of the Trustee (or
any successor group of the Trustee)

                                       15
<PAGE>

or any other officer of the Trustee customarily performing functions similar to
those performed by any of the above designated officers and also means, with
respect to a particular corporate trust matter, any other officer to whom such
matter is referred because of his knowledge of and familiarity with the
particular subject.

                  "Restricted Definitive Note" means a Definitive Note bearing
the Private Placement Legend.

                  "Restricted Global Notes" means the 144A Global Note, the IAI
Global Note and the Regulation S Global Note, each of which shall bear the
Private Placement Legend.

                  "Restricted Investment" means an Investment other than a
Permitted Investment.

                  "Restricted Period" means the 40-day restricted period as
defined in Regulation S.

                  "Restricted Subsidiary" means, with respect to any Person,
each Subsidiary of such Person that is not an Unrestricted Subsidiary.

                  "Rule 144" means Rule 144 under the Securities Act.

                  "Rule 144A" means Rule 144A under the Securities Act.

                  "Rule 903" means Rule 903 under the Securities Act.

                  "Rule 904" means Rule 904 under the Securities Act.

                  "SEC" means the Securities and Exchange Commission.

                  "Securities Act" means the Securities Act of 1933, as amended.

                  "Senior Credit Facilities" means the Second Amended and
Restated 364 Day Credit Agreement, dated as of May 16, 2001, as in effect on the
date of this Indenture, among the Company, the lenders party thereto, Bank of
America, N.A., as administrative agent, and Lehman Commercial Paper Inc., as
syndication agent and documentation agent, and the Third Amended and Restated
Credit Agreement, dated as of May 16, 2001, as in effect on the date of this
Indenture among the Company, the lenders party thereto, Bank of America, N.A.,
as administrative agent, and Lehman Commercial Paper Inc., as syndication agent
and documentation agent, and any related notes, collateral documents, letters of
credit and guarantees, including any appendices, exhibits or schedules to any of
the foregoing (as the same may be in effect from time to time), in each case, as
such agreements may be amended, modified, supplemented or restated from time to
time, or refunded, refinanced, restructured, replaced, renewed, repaid or
extended from time to time (whether with the original agents and lenders or
other agents and lenders or otherwise, and whether provided under the original
credit agreement or other credit agreements or otherwise).

                  "Senior Debt" means (i) all Indebtedness of the Company or any
of its Restricted Subsidiaries outstanding under Credit Facilities and all
Hedging Obligations with respect thereto, (ii) any other Indebtedness permitted
to be incurred by the Company or any of its Restricted

                                       16
<PAGE>

Subsidiaries 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 Notes and (iii) all Obligations with
respect to the foregoing. Notwithstanding anything to the contrary in the
foregoing, Senior Debt will not include (i) any liability for federal, state,
local or other taxes owed or owing by the Company, (ii) any Indebtedness of the
Company to any of its Subsidiaries or other Affiliates, (iii) any trade payables
or (iv) any Indebtedness that is incurred in violation of the Indenture. The May
1998 Notes, the December 1998 Notes, the 2000 Convertible Notes, the 2001 CODES
and the 2002 Notes shall be deemed to rank pari pasu with the Notes and shall
not constitute Senior Debt.

                  "Shelf Registration Statement" means the Shelf Registration
Statement as defined in the Registration Rights Agreement.

                  "Significant Subsidiary" means any Subsidiary which is a
"significant subsidiary" within the meaning of Rule 405 under the Securities
Act.

                  "Similar Business" means a business, a majority of whose
revenues in the most recently ended calendar year were derived from (i) the sale
of defense products, electronics, communications systems, aerospace products,
avionics products and/or communications products, (ii) any services related
thereto, (iii) any business or activity that is reasonably similar thereto or a
reasonable extension, development or expansion thereof or ancillary thereto, and
(iv) any combination of any of the foregoing.

                  "Stated Maturity" means, with respect to any installment of
interest or principal on any series of Indebtedness, the date on which such
payment of interest or principal was scheduled to be paid in the original
documentation governing such Indebtedness, and shall not include any contingent
obligations to repay, redeem or repurchase any such interest or principal prior
to the date originally scheduled for the payment thereof.

                  "Subsidiary" means, with respect to any Person, (i) any
corporation, association or other business entity of which more than 50% of the
total voting power of shares of Capital Stock entitled (without regard to the
occurrence of any contingency) to vote in the election of directors, managers or
trustees thereof is at the time owned or controlled, directly or indirectly, by
such Person or one or more of the other Subsidiaries of that Person (or a
combination thereof) and (ii) any partnership (A) the sole general partner or
the managing general partner of which is such Person or a Subsidiary of such
Person or (B) the only general partners of which are such Person or of one or
more Subsidiaries of such Person (or any combination thereof).

                  "S&P" means Standard and Poor's Corporation.

                  "TIA" means the Trust Indenture Act of 1939 (15 U.S.C. ss.ss.
77aaa-77bbbb) as in effect on the date on which this Indenture is qualified
under TIA.

                  "Transaction Documents" means the Indenture, the Notes, the
Purchase Agreement and the Registration Rights Agreement.

                  "Transfer Restricted Securities" means securities that bear or
are required to bear the Private Placement Legend set forth in Section
2.06(g)(i) hereof.

                                       17
<PAGE>

                  "Trustee" means the party named as such above until a
successor replaces it in accordance with the applicable provisions of this
Indenture and thereafter means the successor serving hereunder.

                  "Unrestricted Global Note" means one or more Global Notes, in
the form of Exhibit A attached hereto, that do not and are not required to bear
the Private Placement Legend and are deposited with and registered in the name
of the Depositary or its nominee.

                  "Unrestricted Definitive Note" means one or more Definitive
Notes that do not and are not required to bear the Private Placement Legend.

                  "Unrestricted Subsidiary" means any Subsidiary that is
designated by the Board of Directors as an Unrestricted Subsidiary pursuant to a
resolution of the Board of Directors, but only to the extent that such
Subsidiary: (i) has no Indebtedness other than Non-Recourse Debt; (ii) is not
party to any agreement, contract, arrangement or understanding with the Company
or any Restricted Subsidiary of the Company unless the terms of any such
agreement, contract, arrangement or understanding are no less favorable to the
Company or such Restricted Subsidiary than those that might be obtained at the
time from Persons who are not Affiliates of the Company; (iii) is a Person with
respect to which neither the Company nor any of its Restricted Subsidiaries has
any direct or indirect obligation (A) to subscribe for additional Equity
Interests or (B) to maintain or preserve such Person's financial condition or to
cause such Person to achieve any specified levels of operating results; (iv) has
not guaranteed or otherwise directly or indirectly provided credit support for
any Indebtedness of the Company or any of its Restricted Subsidiaries; and (v)
has at least one director on its board of directors that is not a director or
executive officer of the Company or any of its Restricted Subsidiaries. Any such
designation by the Board of Directors shall be evidenced to the Trustee by
filing with the Trustee a certified copy of a resolution of the Board of
Directors giving effect to such designation and an Officers' Certificate
certifying that such designation complied with the foregoing conditions and was
permitted by Section 4.07. If, at any time, any Unrestricted Subsidiary would
fail to meet the foregoing requirements as an Unrestricted Subsidiary, it shall
thereafter cease to be an Unrestricted Subsidiary for purposes of this Indenture
and any Indebtedness of such Subsidiary shall be deemed to be incurred by a
Restricted Subsidiary of the Company as of such date (and, if such Indebtedness
is not permitted to be incurred as of such date under Section 4.09, the Company
shall be in default of such covenant). The Board of Directors of the Company may
at any time designate any Unrestricted Subsidiary to be a Restricted Subsidiary;
provided that such designation shall be deemed to be an incurrence of
Indebtedness by a Restricted Subsidiary of the Company of any outstanding
Indebtedness of such Unrestricted Subsidiary and such designation shall only be
permitted if (i) such Indebtedness is permitted under Section 4.09, calculated
on a pro forma basis as if such designation had occurred at the beginning of the
four-quarter reference period, and (ii) no Default or Event of Default would be
in existence following such designation.

                  "U.S. Person" means a U.S. person as defined in Rule 902(k)
under the Securities Act.

                  "Voting Stock" of any Person as of any date means the Capital
Stock of such Person that is at the time entitled to vote in the election of the
Board of Directors of such Person.

                                       18
<PAGE>

                  "Weighted Average Life to Maturity" means, when applied to any
Indebtedness at any date, the number of years obtained by dividing (i) the sum
of the products obtained by multiplying (A) the amount of each then remaining
installment, sinking fund, serial maturity or other required payments of
principal, including payment at final maturity, in respect thereof, by (B) the
number of years (calculated to the nearest one-twelfth) that will elapse between
such date and the making of such payment, by (ii) the then outstanding principal
amount of such Indebtedness.

                  "Wholly Owned" means, when used with respect to any Subsidiary
or Restricted Subsidiary of a Person, a Subsidiary (or Restricted Subsidiary, as
appropriate) of such Person all of the outstanding Capital Stock or other
ownership interests of which (other than directors' qualifying shares) shall at
the time be owned by such Person or by one or more Wholly Owned Subsidiaries (or
Wholly Owned Restricted Subsidiaries, as appropriate) of such Person and one or
more Wholly Owned Subsidiaries (or Wholly Owned Restricted Subsidiaries, as
appropriate) of such Person.

Section 1.02      Other Definitions.

                                                                     Defined in
                   Term                                                Section
        "Affiliate Transaction"..........................................4.11
        "Asset Sale Offer"...............................................3.09
        "Change of Control Offer"........................................4.15
        "Change of Control Payment"......................................4.15
        "Change of Control Payment Date".................................4.15
        "Covenant Defeasance"............................................8.03
        "DTC"............................................................2.03
        "Event of Default"...............................................6.01
        "Excess Proceeds"................................................4.10
        "Global Note Legend".............................................2.06
        "incur"..........................................................4.09
        "Legal Defeasance"...............................................8.02
        "Offer Amount"...................................................3.09
        "Offer Period"...................................................3.09
        "Paying Agent"...................................................2.03
        "Payment Blockage Notice" ......................................11.03
        "Permitted Debt" ................................................4.09
        "Purchase Date"..................................................3.09
        "Registrar"......................................................2.03
        "Restricted Payments"............................................4.07
        "Series A Notes".............................................preamble

Section 1.03      Incorporation by Reference of Trust Indenture Act.

                  Whenever this Indenture refers to a provision of the TIA, the
provision is incorporated by reference in and made a part of this Indenture.

                                       19
<PAGE>

                  The following TIA terms used in this Indenture have the
following meanings:

                  "indenture securities" means the Notes;

                  "indenture security Holder" means a Holder of a Note;

                  "indenture to be qualified" means this Indenture;

                  "indenture trustee" or "institutional trustee" means the
Trustee;

                  "obligor" on the Notes means the Company and any successor
obligor upon the Notes.

                  All other terms used in this Indenture that are defined by the
TIA, defined by TIA reference to another statute or defined by SEC rule under
the TIA have the meanings so assigned to them.

Section 1.04      Rules of Construction.

                  Unless the context otherwise requires:

                  (1)      a term has the meaning assigned to it;

                  (2)      an accounting  term not otherwise  defined has the
         meaning  assigned to it in accordance with GAAP;

                  (3)      "or" is not exclusive;

                  (4)      words in the singular include the plural, and in the
         plural include the singular;

                  (5)      provisions apply to successive events and
         transactions; and

                  (6) references to sections of or rules under the Securities
         Act shall be deemed to include substitute, replacement of successor
         sections or rules adopted by the SEC from time to time.

                                    ARTICLE 2.
                                    THE NOTES

Section 2.01      Form and Dating.

                  The Notes and the Trustee's certificate of authentication
shall be substantially in the form of Exhibit A hereto. The Notes may be issued
in the form of Definitive Notes or Global Notes, as specified by the Company.
The Notes may have notations, legends or endorsements required by law, stock
exchange rule or usage. Each Note shall be dated the date of its authentication.
The Notes shall be in denominations of $1,000 and integral multiples thereof.

                                       20
<PAGE>

                  The terms and provisions contained in the Notes shall
constitute, and are hereby expressly made, a part of this Indenture and the
Company and the Trustee, by their execution and delivery of this Indenture,
expressly agree to such terms and provisions and to be bound thereby. However,
to the extent any provision of any Note conflicts with the express provisions of
this Indenture, the provisions of this Indenture shall govern and be
controlling.

                  Notes issued in global form shall be substantially in the form
of Exhibit A attached hereto (including the Global Note Legend and the "Schedule
of Exchanges in the Global Note" attached thereto). Notes issued in definitive
form shall be substantially in the form of Exhibit A attached hereto (but
without the Global Note Legend and without the "Schedule of Exchanges of
Interests in the Global Note" attached thereto). Each Global Note shall
represent such of the outstanding Notes as shall be specified therein and each
shall provide that it shall represent the aggregate principal amount of
outstanding Notes from time to time endorsed thereon and that the aggregate
principal amount of outstanding Notes represented thereby may from time to time
be reduced or increased, as appropriate, to reflect exchanges and redemptions.
Any endorsement of a Global Note to reflect the amount of any increase or
decrease in the aggregate principal amount of outstanding Notes represented
thereby shall be made by the Trustee or the Note Custodian, at the direction of
the Trustee, in accordance with instructions given by the Holder thereof as
required by Section 2.06 hereof.

                  The provisions of the "Operating Procedures of the Euroclear
System" and "Terms and Conditions Governing Use of Euroclear" and the "General
Terms and Conditions of Clearstream Banking" and "Customer Handbook" of
Clearstream shall be applicable to interests in the Regulation S Global Notes
that are held by the Agent Members through Euroclear or Clearstream.

Section 2.02      Execution and Authentication.

                  Two Officers shall sign the Notes for the Company by manual or
facsimile signature.

                  If an Officer whose signature is on a Note no longer holds
that office at the time a Note is authenticated, the Note shall nevertheless be
valid.

                  A Note shall not be valid until authenticated by the manual
signature of the Trustee. The signature shall be conclusive evidence that the
Note has been authenticated under this Indenture.

                  The Trustee shall, upon a written order of the Company signed
by two Officers, authenticate the Initial Notes for original issue up to $400.0
million in aggregate principal amount and, upon receipt of an authentication
order in accordance with this Section 2.02, at any time and from time to time
thereafter, the Trustee shall authenticate Additional Notes and Exchange Notes
for original issue in an aggregate principal amount specified in such
authentication order.

                  The Trustee may appoint an authenticating agent acceptable to
the Company to authenticate Notes. An authenticating agent may authenticate
Notes whenever the Trustee may do so. Each reference in this Indenture to
authentication by the Trustee includes authentication

                                       21
<PAGE>

by such agent. An authenticating agent has the same rights as an Agent to deal
with Holders or an Affiliate of the Company.

Section 2.03      Registrar and Paying Agent.

                  The Company shall maintain an office or agency where Notes may
be presented for registration of transfer or for exchange ("Registrar") and an
office or agency where Notes may be presented for payment ("Paying Agent"). The
Registrar shall keep a register of the Notes and of their transfer and exchange.
The Company may appoint one or more co-registrars and one or more additional
paying agents. The term "Registrar" includes any co-registrar and the term
"Paying Agent" includes any additional paying agent. The Company may change any
Paying Agent or Registrar without notice to any Holder. The Company shall notify
the Trustee in writing of the name and address of any Agent not a party to this
Indenture. If the Company fails to appoint or maintain another entity as
Registrar or Paying Agent, the Trustee shall act as such. The Company or any of
its Subsidiaries may act as Paying Agent or Registrar.

                  The Company initially appoints The Depository Trust Company
("DTC") to act as Depositary with respect to the Global Notes.

                  The Company initially appoints the Trustee to act as the
Registrar and Paying Agent and to act as Note Custodian with respect to the
Global Notes.

Section 2.04      Paying Agent To Hold Money In Trust.

                  The Company shall require each Paying Agent other than the
Trustee to agree in writing that the Paying Agent will hold in trust for the
benefit of Holders or the Trustee all money held by the Paying Agent for the
payment of principal, premium or Additional Amounts, if any, or interest on the
Notes, and will notify the Trustee of any default by the Company in making any
such payment. While any such default continues, the Trustee may require a Paying
Agent to pay all money held by it to the Trustee. The Company at any time may
require a Paying Agent to pay all money held by it to the Trustee. Upon payment
over to the Trustee, the Paying Agent (if other than the Company or a
Subsidiary) shall have no further liability for the money. If the Company or a
Subsidiary acts as Paying Agent, it shall segregate and hold in a separate trust
fund for the benefit of the Holders all money held by it as Paying Agent. Upon
any bankruptcy or reorganization proceedings relating to the Company, the
Trustee shall serve as Paying Agent for the Notes.

Section 2.05      Holder Lists.

                  The Trustee shall preserve in as current a form as is
reasonably practicable the most recent list available to it of the names and
addresses of all Holders and shall otherwise comply with TIA ss. 312(a). If the
Trustee is not the Registrar, the Company shall furnish to the Trustee at least
five Business Days before each interest payment date and at such other times as
the Trustee may request in writing, a list in such form and as of such date as
the Trustee may reasonably require of the names and addresses of the Holders of
Notes and the Company shall otherwise comply with TIA ss. 312(a).

                                       22
<PAGE>

Section 2.06      Transfer and Exchange.

                  (a) Transfer and Exchange of Global Notes. A Global Note may
not be transferred as a whole except by the Depositary to a nominee of the
Depositary, by a nominee of the Depositary to the Depositary or to another
nominee of the Depositary, or by the Depositary or any such nominee to a
successor Depositary or a nominee of such successor Depositary. All Global Notes
will be exchanged by the Company for Definitive Notes if (i) the Company
delivers to the Trustee notice from the Depositary that it is unwilling or
unable to continue to act as Depositary or that it is no longer a clearing
agency registered under the Exchange Act and, in either case, a successor
Depositary is not appointed by the Company within 120 days after the date of
such notice from the Depositary or (ii) the Company in its sole discretion
determines that the Global Notes (in whole but not in part) should be exchanged
for Definitive Notes and delivers a written notice to such effect to the
Trustee. Upon the occurrence of either of the preceding events in (i) or (ii)
above, Definitive Notes shall be issued in such names as the Depositary shall
instruct the Trustee. Global Notes also may be exchanged or replaced, in whole
or in part, as provided in Sections 2.07 and 2.11 hereof. Every Note
authenticated and made available for delivery in exchange for, or in lieu of, a
Global Note or any portion thereof, pursuant to Section 2.07 or 2.11 hereof,
shall be authenticated and made available for delivery in the form of, and shall
be, a Global Note. A Global Note may not be exchanged for another Note other
than as provided in this Section 2.06(a), however beneficial interests in a
Global Note may be transferred and exchanged as provided in Section 2.06(b), (c)
or (f) hereof.

                    (b) Transfer and Exchange of Beneficial Interests in the
Global Notes. The transfer and exchange of beneficial interests in the Global
Notes shall be effected through the Depositary, in accordance with the
provisions of this Indenture and the procedures of the Depositary therefor.
Beneficial interests in the Restricted Global Notes shall be subject to
restrictions on transfer comparable to those set forth herein to the extent
required by the Securities Act. The Trustee shall have no obligation to
ascertain the Depositary's compliance with any such restrictions on transfer.
Transfers of beneficial interests in the Global Notes also shall require
compliance with either subparagraph (i) or (ii) below, as applicable, as well as
one or more of the other following subparagraphs as applicable:

          (i) Transfer of Beneficial Interests in the Same Global Note.
     Beneficial interests in any Restricted Global Note may be transferred to
     Persons who take delivery thereof in the form of a beneficial interest in
     the same Restricted Global Note in accordance with the transfer
     restrictions set forth in the Private Placement Legend; provided, however,
     that prior to the expiration of the Restricted Period transfers of
     beneficial interests in the Regulation S Global Note may not be made to a
     U.S. Person or for the account or benefit of a U.S. Person (other than an
     Initial Purchaser). Beneficial interests in any Unrestricted Global Note
     may be transferred only to Persons who take delivery thereof in the form of
     a beneficial interest in an Unrestricted Global Note. No written orders or
     instructions shall be required to be delivered to the Registrar to effect
     the transfers described in this Section 2.06(b)(i).

          (ii) All Other Transfers and Exchanges of Beneficial Interests in
     Global Notes. In connection with all transfers and exchanges of beneficial
     interests (other than transfers of beneficial interests in a Global Note to
     Persons who take delivery thereof in

                                       23
<PAGE>

     the form of a beneficial interest in the same Global Note), the transferor
     of such beneficial interest must deliver to the Registrar either (A)(1) a
     written order from a Participant or an Indirect Participant given to the
     Depositary in accordance with the Applicable Procedures directing the
     Depositary to credit or cause to be credited a beneficial interest in the
     specified Global Note in an amount equal to the beneficial interest to be
     transferred or exchanged and (2) instructions given in accordance with the
     Applicable Procedures containing information regarding the Participant
     account to be credited with such increase or (B)(1) a written order from a
     Participant or an Indirect Participant given to the Depositary in
     accordance with the Applicable Procedures directing the Depositary to cause
     to be issued a Definitive Note in an amount equal to the beneficial
     interest to be transferred or exchanged and (2) instructions given by the
     Depositary to the Registrar containing information regarding the Person in
     whose name such Definitive Note shall be registered to effect the transfer
     or exchange referred to in (1) above. Upon an Exchange Offer by the Company
     in accordance with Section 2.06(f) hereof, the requirements of this Section
     2.06(b)(ii) shall be deemed to have been satisfied upon receipt by the
     Registrar of the instructions contained in the Letter of Transmittal
     delivered by the Holder of such beneficial interests in the Restricted
     Global Notes. Upon satisfaction of all of the requirements for transfer or
     exchange of beneficial interests in Global Notes contained in this
     Indenture, the Notes and otherwise applicable under the Securities Act, the
     Trustee shall adjust the principal amount of the relevant Global Note(s)
     pursuant to Section 2.06(h) hereof.

          (iii) Transfer of Beneficial Interests to Another Restricted Global
     Note. Beneficial interests in any Restricted Global Note may be transferred
     to Persons who take delivery thereof in the form of a beneficial interest
     in another Restricted Global Note if the Registrar receives the following:

               (A) if the transferee will take delivery in the form of a
          beneficial interest in the 144A Global Note, then the transferor must
          deliver a certificate in the form of Exhibit B hereto, including the
          certifications in item (1) thereof;

               (B) if the transferee will take delivery in the form of a
          beneficial interest in the Regulation S Global Note, then the
          transferor must deliver a certificate in the form of Exhibit B hereto,
          including the certifications in item (2) thereof; and

               (C) if the transferee will take delivery in the form of a
          beneficial interest in the IAI Global Note, then the transferor must
          deliver (x) a certificate in the form of Exhibit B hereto, including
          the certifications in item (3) thereof, (y) to the extent required by
          item 3(d) of Exhibit B hereto, an Opinion of Counsel in form
          reasonably acceptable to the Company to the effect that such transfer
          is in compliance with the Securities Act and such beneficial interest
          is being transferred in compliance with any applicable blue sky
          securities laws of any State of the United States and (z) if the
          transfer is being made to an Institutional Accredited Investor and
          effected pursuant to an exemption from the registration requirements
          of the Securities Act other than Rule 144A under the Securities Act,

                                       24
<PAGE>

          Rule 144 under the Securities Act or Rule 904 under the Securities
          Act, a certificate from the transferee in the form of Exhibit D
          hereto.

          (iv) Transfer and Exchange of Beneficial Interests in a Restricted
     Global Note for Beneficial Interests in the Unrestricted Global Note.
     Beneficial interests in any Restricted Global Note may be exchanged by any
     holder thereof for a beneficial interest in the Unrestricted Global Note or
     transferred to Persons who take delivery thereof in the form of a
     beneficial interest in the Unrestricted Global Note if:

               (A) such exchange or transfer is effected pursuant to the
          Exchange Offer in accordance with the Registration Rights Agreement
          and the holder, in the case of an exchange, or the transferee, in the
          case of a transfer, is not (1) a broker-dealer, (2) a Person
          participating in the distribution of the Exchange Notes or (3) a
          Person who is an affiliate (as defined in Rule 144) of the Company;

               (B) any such transfer is effected pursuant to the Shelf
          Registration Statement in accordance with the Registration Rights
          Agreement;

               (C) any such transfer is effected by a Broker-Dealer pursuant to
          the Exchange Offer Registration Statement in accordance with the
          Registration Rights Agreement; or

               (D) the Registrar receives the following:

                    (1) if the holder of such beneficial interest in a
               Restricted Global Note proposes to exchange such beneficial
               interest for a beneficial interest in the Unrestricted Global
               Note, a certificate from such holder in the form of Exhibit C
               hereto, including the certifications in item (1)(a) thereof;

                    (2) if the holder of such beneficial interest in a
               Restricted Global Note proposes to transfer such beneficial
               interest to a Person who shall take delivery thereof in the form
               of a beneficial interest in the Unrestricted Global Note, a
               certificate from such holder in the form of Exhibit B hereto,
               including the certifications in item (4) thereof;

                    (3) in each such case set forth in this subparagraph (D), an
               Opinion of Counsel in form reasonably acceptable to the Registrar
               to the effect that such exchange or transfer is in compliance
               with the Securities Act, that the restrictions on transfer
               contained herein and in the Private Placement Legend are not
               required in order to maintain compliance with the Securities Act,
               and such beneficial interest is being exchanged or transferred in
               compliance with any applicable blue sky securities laws of any
               State of the United States.

                  If any such transfer is effected pursuant to subparagraph (B)
or (D) above at a time when an Unrestricted Global Note has not yet been issued,
the Company shall issue and, upon receipt of an authentication order in
accordance with Section 2.02 hereof, the Trustee shall

                                       25
<PAGE>

authenticate one or more Unrestricted Global Notes in an aggregate principal
amount equal to the principal amount of beneficial interests transferred
pursuant to subparagraph (B) or (D) above.

                  Beneficial interests in an Unrestricted Global Note cannot be
exchanged for, or transferred to Persons who take delivery thereof in the form
of, a beneficial interest in any Restricted Global Note.

                  (c) Transfer or Exchange of Beneficial Interests for
Definitive Notes.

          (i) If any holder of a beneficial interest in a Restricted Global Note
     proposes to exchange such beneficial interest for a Definitive Note or to
     transfer such beneficial interest to a Person who takes delivery thereof in
     the form of a Definitive Note, then, upon receipt by the Registrar of the
     following documentation (all of which may be submitted by facsimile):

               (A) if the holder of such beneficial interest in a Restricted
          Global Note proposes to exchange such beneficial interest for a
          Definitive Note, a certificate from such holder in the form of Exhibit
          C hereto, including the certifications in item (2)(a) thereof;

               (B) if such beneficial interest is being transferred to a QIB in
          accordance with Rule 144A under the Securities Act, a certificate to
          the effect set forth in Exhibit B hereto, including the certifications
          in item (1) thereof;

               (C) if such beneficial interest is being transferred to a
          Non-U.S. Person in an offshore transaction in accordance with Rule 904
          under the Securities Act, a certificate to the effect set forth in
          Exhibit B hereto, including the certifications in item (2) thereof;

               (D) if such beneficial interest is being transferred pursuant to
          an exemption from the registration requirements of the Securities Act
          in accordance with Rule 144 under the Securities Act, a certificate to
          the effect set forth in Exhibit B hereto, including the certifications
          in item (3)(a) thereof;

               (E) if such beneficial interest is being transferred to an
          Institutional Accredited Investor in reliance on an exemption from the
          registration requirements of the Securities Act other than those
          listed in subparagraphs (B) through (D) above, a certificate to the
          effect set forth in Exhibit B hereto, including the certifications in
          item (3)(d) thereof, a certificate from the transferee to the effect
          set forth in Exhibit D hereof and, to the extent required by item 3(d)
          of Exhibit B, an Opinion of Counsel from the transferee or the
          transferor reasonably acceptable to the Company to the effect that
          such transfer is in compliance with the Securities Act and such
          beneficial interest is being transferred in compliance with any
          applicable blue sky securities laws of any State of the United States;

                                       26
<PAGE>

               (F) if such beneficial interest is being transferred to the
          Company or any of its Subsidiaries, a certificate to the effect set
          forth in Exhibit B hereto, including the certifications in item (3)(b)
          thereof; or

               (G) if such beneficial interest is being transferred pursuant to
          an effective registration statement under the Securities Act, a
          certificate to the effect set forth in Exhibit B hereto, including the
          certifications in item (3)(c) thereof, the Trustee shall cause the
          aggregate principal amount of the applicable Global Note to be reduced
          accordingly pursuant to Section 2.06(h) hereof, and the Company shall
          execute and the Trustee shall authenticate and deliver to the Person
          designated in the instructions a Definitive Note in the appropriate
          principal amount. Definitive Notes issued in exchange for beneficial
          interests in a Restricted Global Note pursuant to this Section 2.06(c)
          shall be registered in such names and in such authorized denominations
          as the holder shall instruct the Registrar through instructions from
          the Depositary and the Participant or Indirect Participant. The
          Trustee shall deliver such Definitive Notes to the Persons in whose
          names such Notes are so registered. Definitive Notes issued in
          exchange for a beneficial interest in a Restricted Global Note
          pursuant to this Section 2.06(c)(i) shall bear the Private Placement
          Legend and shall be subject to all restrictions on transfer contained
          therein.

          (ii) Notwithstanding 2.06(c)(i), a holder of a beneficial interest in
     a Restricted Global Note may exchange such beneficial interest for an
     Unrestricted Definitive Note or may transfer such beneficial interest to a
     Person who takes delivery thereof in the form of an Unrestricted Definitive
     Note only if:

               (A) such exchange or transfer is effected pursuant to the
          Exchange Offer in accordance with the Registration Rights Agreement
          and the holder, in the case of an exchange, or the transferee, in the
          case of a transfer, is not (1) a broker-dealer, (2) a Person
          participating in the distribution of the Exchange Notes or (3) a
          Person who is an affiliate (as defined in Rule 144) of the Company;

               (B) any such transfer is effected pursuant to the Shelf
          Registration Statement in accordance with the Registration Rights
          Agreement;

               (C) any such transfer is effected by a Broker-Dealer pursuant to
          the Exchange Offer Registration Statement in accordance with the
          Registration Rights Agreement; or

               (D) the Registrar receives the following:

                    (1) if the holder of such beneficial interest in a
               Restricted Global Note proposes to exchange such beneficial
               interest for a Definitive Note that does not bear the Private
               Placement Legend, a certificate from such holder in the form of
               Exhibit C hereto, including the certifications in item (1)(b)
               thereof;

                                       27
<PAGE>

                    (2) if the holder of such beneficial interest in a
               Restricted Global Note proposes to transfer such beneficial
               interest to a Person who shall take delivery thereof in the form
               of a Definitive Note that does not bear the Private Placement
               Legend, a certificate from such holder in the form of Exhibit B
               hereto, including the certifications in item (4) thereof; and

                    (3) in each such case set forth in this subparagraph (D), an
               Opinion of Counsel in form reasonably acceptable to the Company,
               to the effect that such exchange or transfer is in compliance
               with the Securities Act, that the restrictions on transfer
               contained herein and in the Private Placement Legend are not
               required in order to maintain compliance with the Securities Act,
               and such beneficial interest in a Restricted Global Note is being
               exchanged or transferred in compliance with any applicable blue
               sky securities laws of any State of the United States.

          (iii) If any holder of a beneficial interest in an Unrestricted Global
     Note proposes to exchange such beneficial interest for a Definitive Note or
     to transfer such beneficial interest to a Person who takes delivery thereof
     in the form of a Definitive Note, then, upon satisfaction of the conditions
     set forth in Section 2.06(b)(ii), the Trustee shall cause the aggregate
     principal amount of the applicable Global Note to be reduced accordingly
     pursuant to Section 2.06(h) hereof, and the Company shall execute and the
     Trustee shall authenticate and deliver to the Person designated in the
     instructions a Definitive Note in the appropriate principal amount.
     Definitive Notes issued in exchange for a beneficial interest pursuant to
     this Section 2.06(c)(iii) shall be registered in such names and in such
     authorized denominations as the holder shall instruct the Registrar through
     instructions from the Depositary and the Participant or Indirect
     Participant. The Trustee shall deliver such Definitive Notes to the Persons
     in whose names such Notes are so registered. Definitive Notes issued in
     exchange for a beneficial interest pursuant to this section 2.06(c)(iii)
     shall not bear the Private Placement Legend. Beneficial interests in an
     Unrestricted Global Note cannot be exchanged for a Definitive Note bearing
     the Private Placement Legend or transferred to a Person who takes delivery
     thereof in the form of a Definitive Note bearing the Private Placement
     Legend.

                  (d) Transfer or Exchange of Definitive Notes for Beneficial
Interests.

          (i) If any Holder of Restricted Definitive Notes proposes to exchange
     such Notes for a beneficial interest in a Restricted Global Note or to
     transfer such Definitive Notes to a Person who takes delivery thereof in
     the form of a beneficial interest in a Restricted Global Note, then, upon
     receipt by the Registrar of the following documentation (all of which may
     be submitted by facsimile):

               (A) if the Holder of such Restricted Definitive Notes proposes to
          exchange such Notes for a beneficial interest in a Restricted Global
          Note, a certificate from such Holder in the form of Exhibit C hereto,
          including the certifications in item (2)(b) thereof;

                                       28
<PAGE>

               (B) if such Definitive Notes are being transferred to a QIB in
          accordance with Rule 144A under the Securities Act, a certificate to
          the effect set forth in Exhibit B hereto, including the certifications
          in item (1) thereof;

               (C) if such Definitive Notes are being transferred to a Non-U.S.
          Person in an offshore transaction in accordance with Rule 904 under
          the Securities Act, a certificate to the effect set forth in Exhibit B
          hereto, including the certifications in item (2) thereof;

               (D) if such Definitive Notes are being transferred pursuant to an
          exemption from the registration requirements of the Securities Act in
          accordance with Rule 144 under the Securities Act, a certificate to
          the effect set forth in Exhibit B hereto, including the certifications
          in item (3)(a) thereof;

               (E) if such Definitive Notes are being transferred to an
          Institutional Accredited Investor in reliance on an exemption from the
          registration requirements of the Securities Act other than those
          listed in subparagraphs (B) through (D) above, a certificate to the
          effect set forth in Exhibit B hereto, including the certifications in
          item (3)(d) thereof, a certificate from the transferee to the effect
          set forth in Exhibit D hereof and, to the extent required by item 3(d)
          of Exhibit B, an Opinion of Counsel from the transferee or the
          transferor reasonably acceptable to the Company to the effect that
          such transfer is in compliance with the Securities Act and such
          Definitive Notes are being transferred in compliance with any
          applicable blue sky securities laws of any State of the United States;

               (F) if such Definitive Notes are being transferred to the Company
          or any of its Subsidiaries, a certificate to the effect set forth in
          Exhibit B hereto, including the certifications in item (3)(b) thereof;
          or

               (G) if such Definitive Notes are being transferred pursuant to an
          effective registration statement under the Securities Act, a
          certificate to the effect set forth in Exhibit B hereto, including the
          certifications in item (3)(c) thereof,

     the Trustee shall cancel the Definitive Notes, increase or cause to be
     increased the aggregate principal amount of, in the case of clause (A)
     above, the appropriate Restricted Global Note, in the case of clause (B)
     above, the 144A Global Note, in the case of clause (C) above, the
     Regulation S Global Note, and in all other cases, the IAI Global Note.

          (ii) A Holder of Restricted Definitive Notes may exchange such Notes
     for a beneficial interest in the Unrestricted Global Note or transfer such
     Restricted Definitive Notes to a Person who takes delivery thereof in the
     form of a beneficial interest in the Unrestricted Global Note only if:

               (A) such exchange or transfer is effected pursuant to the
          Exchange Offer in accordance with the Registration Rights Agreement
          and the Holder, in the case of an exchange, or the transferee, in the
          case of a transfer, is not (1) a

                                       29
<PAGE>

          broker-dealer, (2) a Person participating in the distribution of the
          Exchange Notes or (3) a Person who is an affiliate (as defined in Rule
          144) of the Company;

               (B) any such transfer is effected pursuant to the Shelf
          Registration Statement in accordance with the Registration Rights
          Agreement;

               (C) any such transfer is effected by a Broker-Dealer pursuant to
          the Exchange Offer Registration Statement in accordance with the
          Registration Rights Agreement; or

               (D) the Registrar receives the following:

                    (1) if the Holder of such Definitive Notes proposes to
               exchange such Notes for a beneficial interest in the Unrestricted
               Global Note, a certificate from such Holder in the form of
               Exhibit C hereto, including the certifications in item (1)(c)
               thereof;

                    (2) if the Holder of such Definitive Notes proposes to
               transfer such Notes to a Person who shall take delivery thereof
               in the form of a beneficial interest in the Unrestricted Global
               Note, a certificate from such Holder in the form of Exhibit B
               hereto, including the certifications in item (4) thereof; and

                    (3) in each such case set forth in this subparagraph (D), an
               Opinion of Counsel in form reasonably acceptable to the Company
               to the effect that such exchange or transfer is in compliance
               with the Securities Act, that the restrictions on transfer
               contained herein and in the Private Placement Legend are not
               required in order to maintain compliance with the Securities Act,
               and such Definitive Notes are being exchanged or transferred in
               compliance with any applicable blue sky securities laws of any
               State of the United States.

     Upon satisfaction of the conditions of any of the subparagraphs in this
     Section 2.06(d)(ii), the Trustee shall cancel the Definitive Notes and
     increase or cause to be increased the aggregate principal amount of the
     Unrestricted Global Note.

          (iii) A Holder of Unrestricted Definitive Notes may exchange such
     Notes for a beneficial interest in the Unrestricted Global Note or transfer
     such Definitive Notes to a Person who takes delivery thereof in the form of
     a beneficial interest in the Unrestricted Global Note. Upon receipt of a
     request for such an exchange or transfer, the Trustee shall cancel the
     Unrestricted Definitive Notes and increase or cause to be increased the
     aggregate principal amount of the Unrestricted Global Note.

                  If any such exchange or transfer from a Definitive Note to a
beneficial interest is effected pursuant to subparagraphs (ii)(B), (ii)(D) or
(iii) above at a time when an Unrestricted Global Note has not yet been issued,
the Company shall issue and, upon receipt of an authentication order in
accordance with Section 2.02 hereof, the Trustee shall authenticate one or

                                       30
<PAGE>

more Unrestricted Global Notes in an aggregate principal amount equal to the
principal amount of beneficial interests transferred pursuant to subparagraphs
(ii)(B), (ii)(D) or (iii) above.

                  (e) Transfer and Exchange of Definitive Notes. Upon request by
a Holder of Definitive Notes and such Holder's compliance with the provisions of
this Section 2.06(e), the Registrar shall register the transfer or exchange of
Definitive Notes. Prior to such registration of transfer or exchange, the
requesting Holder shall present or surrender to the Registrar the Definitive
Notes duly endorsed or accompanied by a written instruction of transfer in form
satisfactory to the Registrar duly executed by such Holder or by his attorney,
duly authorized in writing. In addition, the requesting Holder shall provide any
additional certifications, documents and information, as applicable, pursuant to
the provisions of this Section 2.06(e).

          (i) Restricted Definitive Notes may be transferred to and registered
     in the name of Persons who take delivery thereof if the Registrar receives
     the following:

               (A) if the transfer will be made pursuant to Rule 144A under the
          Securities Act, then the transferor must deliver a certificate in the
          form of Exhibit B hereto, including the certifications in item (1)
          thereof;

               (B) if the transfer will be made pursuant to Rule 904, then the
          transferor must deliver a certificate in the form of Exhibit B hereto,
          including the certifications in item (2) thereof; and

               (C) if the transfer will be made pursuant to any other exemption
          from the registration requirements of the Securities Act, then the
          transferor must deliver (x) a certificate in the form of Exhibit B
          hereto, including the certifications in item (3) thereof, (y) to the
          extent required by item 3(d) of Exhibit B hereto, an Opinion of
          Counsel in form reasonably acceptable to the Company to the effect
          that such transfer is in compliance with the Securities Act and such
          beneficial interest is being transferred in compliance with any
          applicable blue sky securities laws of any State of the United States
          and (z) if the transfer is being made to an Institutional Accredited
          Investor and effected pursuant to an exemption from the registration
          requirements of the Securities Act other than Rule 144A under the
          Securities Act, Rule 144 under the Securities Act or Rule 904 under
          the Securities Act, a certificate from the transferee in the form of
          Exhibit D hereto.

          (ii) Restricted Definitive Notes may be exchanged by any Holder
     thereof for an Unrestricted Definitive Note or transferred to Persons who
     take delivery thereof in the form of an Unrestricted Definitive Note if:

               (A) such exchange or transfer is effected pursuant to the
          Exchange Offer in accordance with the Registration Rights Agreement
          and the holder, in the case of an exchange, or the transferee, in the
          case of a transfer, is not (1) a broker-dealer, (2) a Person
          participating in the distribution of the Exchange Notes or (3) a
          Person who is an affiliate (as defined in Rule 144) of the Company;

               (B) any such transfer is effected pursuant to the Shelf
          Registration Statement in accordance with the Registration Rights
          Agreement;

                                       31
<PAGE>

               (C) any such transfer is effected by a Broker-Dealer pursuant to
          the Exchange Offer Registration Statement in accordance with the
          Registration Rights Agreement; or

               (D) the Registrar receives the following:

                    (1) if the Holder of such Restricted Definitive Notes
               proposes to exchange such Notes for an Unrestricted Definitive
               Note, a certificate from such Holder in the form of Exhibit C
               hereto, including the certifications in item (1)(a) thereof;

                    (2) if the Holder of such Restricted Definitive Notes
               proposes to transfer such Notes to a Person who shall take
               delivery thereof in the form of an Unrestricted Definitive Note,
               a certificate from such Holder in the form of Exhibit B hereto,
               including the certifications in item (4) thereof; and

                    (3) in each such case set forth in this subparagraph (D), an
               Opinion of Counsel in form reasonably acceptable to the Company
               to the effect that such exchange or transfer is in compliance
               with the Securities Act, that the restrictions on transfer
               contained herein and in the Private Placement Legend are not
               required in order to maintain compliance with the Securities Act,
               and such Restricted Definitive Note is being exchanged or
               transferred in compliance with any applicable blue sky securities
               laws of any State of the United States.

          (iii) A Holder of Unrestricted Definitive Notes may transfer such
     Notes to a Person who takes delivery thereof in the form of an Unrestricted
     Definitive Note. Upon receipt of a request for such a transfer, the
     Registrar shall register the Unrestricted Definitive Notes pursuant to the
     instructions from the Holder thereof. Unrestricted Definitive Notes cannot
     be exchanged for or transferred to Persons who take delivery thereof in the
     form of a Restricted Definitive Note.

                  (f) Exchange Offer. Upon the occurrence of the Exchange Offer
in accordance with the Registration Rights Agreement, the Company shall issue
and, upon receipt of an authentication order in accordance with Section 2.02,
the Trustee shall authenticate (i) one or more Unrestricted Global Notes in an
aggregate principal amount equal to the principal amount of the beneficial
interests in the Restricted Global Notes tendered for acceptance by persons that
are not (x) broker-dealers, (y) Persons participating in the distribution of the
Exchange Notes or (z) Persons who are affiliates (as defined in Rule 144) of the
Company and accepted for exchange in the exchange Offer and (ii) Definitive
Notes in an aggregate principal amount equal to the principal amount of the
Restricted Definitive Notes accepted for exchange in the Exchange Offer.
Concurrent with the issuance of such Notes, the Trustee shall cause the
aggregate principal amount of the applicable Restricted Global Notes to be
reduced accordingly, and the Company shall execute and the Trustee shall
authenticate and make available for delivery to the Persons designated by the
Holders of Definitive Notes so accepted Definitive Notes in the appropriate
principal amount.

                                       32
<PAGE>

                  (g) Legends. The following legends shall appear on the face of
all Global Notes and Definitive Notes issued under this Indenture unless
specifically stated otherwise in the applicable provisions of this Indenture.

          (i) Private Placement Legend.

               (A) Except as permitted by subparagraph (B) below, each Global
          Note and each Definitive Note (and all Notes issued in exchange
          therefor or substitution thereof) shall bear the legend in
          substantially the following form:

     "THE SECURITY (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED
     IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE UNITED
     STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND THE
     SECURITY EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED
     IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM.
     EACH PURCHASER OF THE SECURITY EVIDENCED HEREBY IS HEREBY NOTIFIED THAT THE
     SELLER MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF
     THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THE
     SECURITY EVIDENCED HEREBY AGREES FOR THE BENEFIT OF L-3 COMMUNICATIONS
     CORPORATION THAT (A) SUCH SECURITY MAY BE RESOLD, PLEDGED OR OTHERWISE
     TRANSFERRED, ONLY (1)(a) TO A PERSON WHO THE SELLER REASONABLY BELIEVES IS
     A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE
     SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (b)
     IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144 UNDER THE SECURITIES
     ACT, (c) OUTSIDE THE UNITED STATES TO A FOREIGN PERSON IN A TRANSACTION
     MEETING THE REQUIREMENTS OF RULE 904 UNDER THE SECURITIES ACT OR (d) IN
     ACCORDANCE WITH ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
     SECURITIES ACT (AND BASED UPON AN OPINION OF COUNSEL IF L-3 COMMUNICATIONS
     CORPORATION SO REQUESTS), (2) TO L-3 COMMUNICATIONS CORPORATION OR (3)
     PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT AND, IN EACH CASE, IN
     ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED
     STATES OR ANY OTHER APPLICABLE JURISDICTION AND (B) THE HOLDER WILL, AND
     EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER FROM IT OF THE
     SECURITY EVIDENCED HEREBY OF THE RESALE RESTRICTIONS SET FORTH IN (A)
     ABOVE."

               (B) Notwithstanding the foregoing, any Global Note or Definitive
          Note issued pursuant to subparagraphs (b)(iv), (c)(ii), (c)(iii),
          (d)(ii), (d)(iii), (e)(ii), (e)(iii) or (f) to this Section 2.06 (and
          all Notes issued in exchange therefor or substitution thereof) shall
          not bear the Private Placement Legend.

                                       33
<PAGE>

          (ii) Global Note Legend. Each Global Note shall bear a legend in
     substantially the following form:

     "THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE
     GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE
     BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY
     CIRCUMSTANCES EXCEPT THAT (I) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS
     MAY BE REQUIRED PURSUANT TO SECTION 2.07 OF THE INDENTURE, (II) THIS GLOBAL
     NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a)
     OF THE INDENTURE, (III) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE
     FOR CANCELLATION PURSUANT TO SECTION 2.11 OF THE INDENTURE AND (IV) THIS
     GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR
     WRITTEN CONSENT OF THE COMPANY."

                  (h) Cancellation and/or Adjustment of Global Notes. At such
time as all beneficial interests in a particular Global Note have been exchanged
for Definitive Notes or a particular Global Note has been redeemed, repurchased
or canceled in whole and not in part, each such Global Note shall be returned to
or retained and canceled by the Trustee in accordance with Section 2.11 hereof.
At any time prior to such cancellation, if any beneficial interest in a Global
Note is exchanged for or transferred to a Person who will take delivery thereof
in the form of a beneficial interest in another Global Note or for Definitive
Notes, the principal amount of Notes represented by such Global Note shall be
reduced accordingly and an endorsement shall be made on such Global Note, by the
Trustee or by the Depositary at the direction of the Trustee, to reflect such
reduction; and if the beneficial interest is being exchanged for or transferred
to a Person who will take delivery thereof in the form of a beneficial interest
in another Global Note, such other Global Note shall be increased accordingly
and an endorsement shall be made on such Global Note, by the Trustee or by the
Depositary at the direction of the Trustee, to reflect such increase.

                  (i) General Provisions Relating to Transfers and Exchanges.

          (i) To permit registrations of transfers and exchanges, the Company
     shall execute and the Trustee shall authenticate Global Notes and
     Definitive Notes upon the Company's order or at the Registrar's request.

          (ii) No service charge shall be made to a holder of a beneficial
     interest in a Global Note or to a Holder of a Definitive Note for any
     registration of transfer or exchange, but the Company may require payment
     of a sum sufficient to cover any transfer tax or similar governmental
     charge payable in connection therewith (other than any such transfer taxes
     or similar governmental charge payable upon exchange or transfer pursuant
     to Sections 2.10, 3.06, 4.10, 4.15 and 9.05 hereof).

          (iii) The Registrar shall not be required to register the transfer of
     or exchange any Note selected for redemption in whole or in part, except
     the unredeemed portion of any Note being redeemed in part.

                                       34
<PAGE>

          (iv) All Global Notes and Definitive Notes issued upon any
     registration of transfer or exchange of Global Notes or Definitive Notes
     shall be the valid obligations of the Company, evidencing the same debt,
     and entitled to the same benefits under this Indenture, as the Global Notes
     or Definitive Notes surrendered upon such registration of transfer or
     exchange.

          (v) The Company shall not be required (A) to issue, to register the
     transfer of or to exchange Notes during a period beginning at the opening
     of business 15 days before the day of any selection of Notes for redemption
     under Section 3.02 hereof and ending at the close of business on the day of
     selection, (B) to register the transfer of or to exchange any Note so
     selected for redemption in whole or in part, except the unredeemed portion
     of any Note being redeemed in part or (C) to register the transfer of or to
     exchange a Note between a record date and the next succeeding interest
     payment date.

          (vi) Prior to due presentment for the registration of a transfer of
     any Note, the Trustee, any Agent and the Company may deem and treat the
     Person in whose name any Note is registered as the absolute owner of such
     Note for the purpose of receiving payment of principal of and interest on
     such Notes and for all other purposes, and none of the Trustee, any Agent
     or the Company shall be affected by notice to the contrary.

          (vii) The Trustee shall authenticate Global Notes and Definitive Notes
     in accordance with the provisions of Section 2.02 hereof.

Section 2.07      Replacement Notes.

                  If any mutilated Note is surrendered to the Trustee, or the
Company and the Trustee receives evidence to its satisfaction of the
destruction, loss or theft of any Note, the Company shall issue and the Trustee,
upon the written order of the Company signed by two Officers of the Company,
shall authenticate a replacement Note if the Trustee's requirements are met. If
required by the Trustee or the Company, an indemnity bond must be supplied by
the Holder that is sufficient in the judgment of the Trustee and the Company to
protect the Company, the Trustee, any Agent and any authenticating agent from
any loss that any of them may suffer if a Note is replaced. The Company may
charge for its expenses in replacing a Note.

                  Every replacement Note is an additional obligation of the
Company and shall be entitled to all of the benefits of this Indenture equally
and proportionately with all other Notes duly issued hereunder.

Section 2.08      Outstanding Notes.

                  The Notes outstanding at any time are all the Notes
authenticated by the Trustee except for those canceled by it, those delivered to
it for cancellation, those reductions in the interest in a Global Note effected
by the Trustee in accordance with the provisions hereof, and those described in
this Section as not outstanding. Except as set forth in Section 2.09 hereof, a
Note does not cease to be outstanding because the Company or an Affiliate of the
Company holds the Note.

                                       35
<PAGE>

                  If a Note is replaced pursuant to Section 2.07 hereof, it
ceases to be outstanding unless the Trustee receives proof satisfactory to it
that the replaced Note is held by a bona fide purchaser.

                  If the principal amount of any Note is considered paid under
Section 4.01 hereof, it ceases to be outstanding and interest on it ceases to
accrue.

                  If the Paying Agent (other than the Company, a Subsidiary or
an Affiliate of any thereof) holds, on a redemption date or maturity date, money
sufficient to pay Notes payable on that date, then on and after that date such
Notes shall be deemed to be no longer outstanding and shall cease to accrue
interest.

Section 2.09      Treasury Notes.

                  In determining whether the Holders of the required principal
amount of Notes have concurred in any direction, waiver or consent, Notes owned
by the Company, or by any Person directly or indirectly controlling or
controlled by or under direct or indirect common control with the Company, shall
be considered as though not outstanding, except that for the purposes of
determining whether the Trustee shall be protected in relying on any such
direction, waiver or consent, only Notes that a Trustee knows are so owned shall
be so disregarded.

Section 2.10      Temporary Notes.

                  Until Definitive Notes are ready for delivery, the Company may
prepare and the Trustee shall authenticate temporary Notes upon a written order
of the Company signed by two Officers of the Company. Temporary Notes shall be
substantially in the form of Definitive Notes but may have variations that the
Company considers appropriate for temporary Notes and as shall be reasonably
acceptable to the Trustee. Without unreasonable delay, the Company shall prepare
and the Trustee shall authenticate Definitive Notes in exchange for temporary
Notes.

                  Holders of temporary Notes shall be entitled to all of the
benefits of this Indenture.

Section 2.11      Cancellation.

                  The Company at any time may deliver Notes to the Trustee for
cancellation. The Registrar and Paying Agent shall forward to the Trustee any
Notes surrendered to them for registration of transfer, exchange or payment. The
Trustee and no one else shall cancel all Notes surrendered for registration of
transfer, exchange, payment, replacement or cancellation and shall destroy
canceled Notes (subject to the record retention requirement of the Exchange
Act). Certification of the destruction of all canceled Notes shall be delivered
to the Company. The Company may not issue new Notes to replace Notes that it has
paid or that have been delivered to the Trustee for cancellation.

Section 2.12      Defaulted Interest.

                  If the Company defaults in a payment of interest on the Notes,
it shall pay the defaulted interest in any lawful manner plus, to the extent
lawful, interest payable on the

                                       36
<PAGE>

defaulted interest, to the Persons who are Holders on a subsequent special
record date, in each case at the rate provided in the Notes and in Section 4.01
hereof. The Company shall notify the Trustee in writing of the amount of
defaulted interest proposed to be paid on each Note and the date of the proposed
payment. The Company shall fix or cause to be fixed each such special record
date and payment date, provided that no such special record date shall be less
than 10 days prior to the related payment date for such defaulted interest. At
least 15 days before the special record date, the Company (or, upon the written
request of the Company, the Trustee in the name and at the expense of the
Company) shall mail or cause to be mailed to Holders a notice that states the
special record date, the related payment date and the amount of such interest to
be paid.

Section 2.13      CUSIP Numbers.

                  The Company in issuing the Notes may use CUSIP numbers (if
then generally in use), and, if so, the Trustee shall use CUSIP numbers in
notices of redemption as a convenience to Holders; provided that any such notice
may state that no representation is made as to the correctness of such numbers
either as printed on the Notes or as contained in any notice of a redemption and
that reliance may be placed only on the other identification numbers printed on
the Notes, and any such redemption shall not be affected by any defect in or
omission of such numbers. The Company will promptly notify the Trustee of any
change in the CUSIP numbers.

                                   ARTICLE 3.
                            REDEMPTION AND PREPAYMENT

Section 3.01      Notices to Trustee.

                  If the Company elects to redeem Notes pursuant to the optional
redemption provisions of Section 3.07 hereof, it shall furnish to the Trustee,
at least 30 days but not more than 60 days before a redemption date, an
Officers' Certificate setting forth (i) the clause of this Indenture pursuant to
which the redemption shall occur, (ii) the redemption date, (iii) the principal
amount of Notes to be redeemed and (iv) the redemption price.

Section 3.02      Selection of Notes to Be Redeemed.

                  If less than all of the Notes are to be redeemed at any time,
selection of Notes for redemption shall be made by the Trustee in compliance
with the requirements of the principal national securities exchange, if any, on
which the Notes are listed, or, if the Notes are not so listed, on a pro rata
basis, by lot or by such method as the Trustee shall deem fair and appropriate;
provided that no Notes of $1,000 or less shall be redeemed in part. Notices of
redemption shall be mailed by first class mail at least 30 but not more than 60
days before the redemption date to each Holder of Notes to be redeemed at its
registered address. Notices of redemption may not be conditional. If any Note is
to be redeemed in part only, the notice of redemption that relates to such Note
shall state the portion of the principal amount thereof to be redeemed. A new
Note in principal amount equal to the unredeemed portion thereof shall be issued
in the name of the Holder thereof upon cancellation of the original Note. Notes
called for redemption become due on the date fixed for redemption. On and after
the redemption date, interest ceases to accrue on Notes or portions of them
called for redemption.

                                       37
<PAGE>

                  The Trustee shall promptly notify the Company in writing of
the Notes selected for redemption and, in the case of any Note selected for
partial redemption, the principal amount thereof to be redeemed. Notes and
portions of Notes selected shall be in amounts of $1,000 or whole multiples of
$1,000; except that if all of the Notes of a Holder are to be redeemed, the
entire outstanding amount of Notes held by such Holder, even if not a multiple
of $1,000, shall be redeemed. Except as provided in the preceding sentence,
provisions of this Indenture that apply to Notes called for redemption also
apply to portions of Notes called for redemption.

Section 3.03      Notice Of Redemption.

                  Subject to the provisions of Section 3.09 hereof, at least 30
days but not more than 60 days before a redemption date, the Company shall mail
or cause to be mailed, by first class mail, a notice of redemption to each
Holder whose Notes are to be redeemed at its registered address.

                  The notice shall identify the Notes to be redeemed (including
CUSIP Numbers, if any) and shall state:

          (a) the redemption date;

          (b) the redemption price;

          (c) if any Note is being redeemed in part, the portion of the
     principal amount of such Note to be redeemed and that, after the redemption
     date upon surrender of such Note, a new Note or Notes in principal amount
     equal to the unredeemed portion shall be issued upon cancellation of the
     original Note;

          (d) the name and address of the Paying Agent;

          (e) that Notes called for redemption must be surrendered to the Paying
     Agent to collect the redemption price;

          (f) that, unless the Company defaults in making such redemption
     payment, interest on Notes called for redemption ceases to accrue on and
     after the redemption date;

          (g) the paragraph of the Notes and/or Section of this Indenture
     pursuant to which the Notes called for redemption are being redeemed; and

          (h) that no representation is made as to the correctness or accuracy
     of the CUSIP number, if any, listed in such notice or printed on the Notes.

                  At the Company's request, the Trustee shall give the notice of
redemption in the Company's name and at its expense; provided, however, that the
Company shall have delivered to the Trustee, at least 45 days prior to the
redemption date, an Officers' Certificate requesting that the Trustee give such
notice and setting forth the information to be stated in such notice as provided
in the preceding paragraph.

                                       38
<PAGE>

Section 3.04      Effect Of Notice Of Redemption.

                  Once notice of redemption is mailed in accordance with Section
3.03 hereof, Notes called for redemption become irrevocably due and payable on
the redemption date at the redemption price. A notice of redemption may not be
conditional.

Section 3.05      Deposit Of Redemption Price.

                  Prior to 11:00 a.m. on the Business Day prior to the
redemption date, the Company shall deposit with the Trustee or with the Paying
Agent money sufficient to pay the redemption price of and accrued interest on
all Notes to be redeemed on that date. The Trustee or the Paying Agent shall
promptly return to the Company any money deposited with the Trustee or the
Paying Agent by the Company in excess of the amounts necessary to pay the
redemption price of, and accrued interest on, all Notes to be redeemed.

                  If the Company complies with the provisions of the preceding
paragraph, on and after the redemption date, interest shall cease to accrue on
the Notes or the portions of Notes called for redemption. If a Note is redeemed
on or after an interest record date but on or prior to the related interest
payment date, then any accrued and unpaid interest shall be paid to the Person
in whose name such Note was registered at the close of business on such record
date. If any Note called for redemption shall not be so paid upon surrender for
redemption because of the failure of the Company to comply with the preceding
paragraph, interest shall be paid on the unpaid principal, from the redemption
date until such principal is paid, and to the extent lawful on any interest not
paid on such unpaid principal, in each case at the rate provided in the Notes
and in Section 4.01 hereof.

Section 3.06      Notes Redeemed In Part.

                  Upon surrender of a Note that is redeemed in part, the Company
shall issue and, upon the Company's written request, the Trustee shall
authenticate for the Holder at the expense of the Company a new Note equal in
principal amount to the unredeemed portion of the Note surrendered.

Section 3.07      Optional Redemption.

                  (a) Except as set forth in clause (b) of this Section 3.7, the
Notes shall not be redeemable at the Company's option prior to July 15, 2008.
Thereafter, the Notes shall be subject to redemption at any time at the option
of the Company, in whole or in part, upon not less than 30 nor more than 60
days' notice, at the redemption prices (expressed as percentages of principal
amount) set forth below plus accrued and unpaid interest and Additional Amounts
thereon, if any, to the applicable redemption date, if redeemed during the
twelve-month period beginning on July 15 of the years indicated below:

                  Year                                        Percentage
                  2008.......................................  103.063%
                  2009.......................................  102.042%
                  2010.......................................  101.021%
                  2011 and thereafter........................  100.000%

                                       39
<PAGE>

                  (b) Notwithstanding the foregoing clause (a), before July 15,
2006, the Company may on any one or more occasions redeem up to an aggregate of
35% of the Notes originally issued at a redemption price of 106.125% of the
principal amount thereof, plus accrued and unpaid interest and Additional
Amounts thereon, if any, to the redemption date, with the net cash proceeds of
one or more Equity Offerings by the Company or the net cash proceeds of one or
more Equity Offerings by Holdings that are contributed to the Company as common
equity capital; provided that at least 65% of the Notes originally issued remain
outstanding immediately after the occurrence of each such redemption; and
provided, further, that any such redemption must occur within 120 days of the
date of the closing of such Equity Offering.

Section 3.08      Mandatory Redemption.

                  Except as set forth under Sections 4.10 and 4.15, the Company
is not required to make mandatory redemption or sinking fund payments with
respect to the Notes.

Section 3.09      Offer To Purchase By Application Of Excess Proceeds.

                  In the event that, pursuant to Section 4.10 hereof, the
Company shall be required to commence an offer to all Holders to purchase Notes
(an "Asset Sale Offer"), it shall follow the procedures specified below.

                  The Asset Sale Offer shall remain open for a period of 20
Business Days following its commencement and no longer, except to the extent
that a longer period is required by applicable law (the "Offer Period"). No
later than five Business Days after the termination of the Offer Period (the
"Purchase Date"), the Company shall purchase the principal amount of Notes
required to be purchased pursuant to Section 4.10 hereof (the "Offer Amount")
or, if less than the Offer Amount has been tendered, all Notes tendered in
response to the Asset Sale Offer. Payment for any Notes so purchased shall be
made in the same manner as interest payments are made.

                  If the Purchase Date is on or after an interest record date
and on or before the related interest payment date, any accrued and unpaid
interest shall be paid to the Person in whose name a Note is registered at the
close of business on such record date, and no additional interest shall be
payable to Holders who tender Notes pursuant to the Asset Sale Offer.

                  Upon the commencement of an Asset Sale Offer, the Company
shall send, by first class mail, a notice to the Trustee and each of the
Holders, with a copy to the Trustee. The notice shall contain all instructions
and materials necessary to enable such Holders to tender Notes pursuant to the
Asset Sale Offer. The Asset Sale Offer shall be made to all Holders. The notice,
which shall govern the terms of the Asset Sale Offer, shall state:

          (a) that the Asset Sale Offer is being made pursuant to this Section
     3.09 and Section 4.10 hereof and the length of time the Asset Sale Offer
     shall remain open;

          (b) the Offer Amount, the purchase price and the Purchase Date;

                                       40
<PAGE>

          (c) that any Note not tendered or accepted for payment shall continue
     to accrete or accrue interest;

          (d) that, unless the Company defaults in making such payment, any Note
     accepted for payment pursuant to the Asset Sale Offer shall cease to
     accrete or accrue interest after the Purchase Date;

          (e) that Holders electing to have a Note purchased pursuant to an
     Asset Sale Offer may only elect to have all of such Note purchased and may
     not elect to have only a portion of such Note purchased;

          (f) that Holders electing to have a Note purchased pursuant to any
     Asset Sale Offer shall be required to surrender the Note, with the form
     entitled "Option of Holder to Elect Purchase" on the reverse of the Note
     completed, or transfer by book-entry transfer, to the Company, a
     depositary, if appointed by the Company, or a Paying Agent at the address
     specified in the notice at least three days before the Purchase Date;

          (g) that Holders shall be entitled to withdraw their election if the
     Company, the Depositary or the Paying Agent, as the case may be, receives,
     not later than the expiration of the Offer Period, a facsimile transmission
     or letter setting forth the name of the Holder, the principal amount of the
     Note the Holder delivered for purchase and a statement that such Holder is
     withdrawing his election to have such Note purchased;

          (h) that, if the aggregate principal amount of Notes surrendered by
     Holders exceeds the Offer Amount, the Company shall select the Notes to be
     purchased on a pro rata basis (with such adjustments as may be deemed
     appropriate by the Company so that only Notes in denominations of $1,000,
     or integral multiples thereof, shall be purchased); and

          (i) that Holders whose Notes were purchased only in part shall be
     issued new Notes equal in principal amount to the unpurchased portion of
     the Notes surrendered (or transferred by book-entry transfer).

                  On or before the Purchase Date, the Company shall, to the
extent lawful, accept for payment, on a pro rata basis to the extent necessary,
the Offer Amount of Notes or portions thereof tendered pursuant to the Asset
Sale Offer, or if less than the Offer Amount has been tendered, all Notes
tendered, and shall deliver to the Trustee an Officers' Certificate stating that
such Notes or portions thereof were accepted for payment by the Company in
accordance with the terms of this Section 3.09. The Company, the Depositary or
the Paying Agent, as the case may be, shall promptly (but in any case not later
than five days after the Purchase Date) mail or deliver to each tendering Holder
an amount equal to the purchase price of the Notes tendered by such Holder and
accepted by the Company for purchase, and the Company shall promptly issue a new
Note, and the Trustee, upon written request from the Company shall authenticate
and mail or deliver such new Note to such Holder, in a principal amount equal to
any unpurchased portion of the Note surrendered. Any Note not so accepted shall
be promptly mailed or delivered by the Company to the Holder thereof. The
Company shall publicly announce the results of the Asset Sale Offer on the
Purchase Date.

                                       41
<PAGE>

                  Other than as specifically provided in this Section 3.09, any
purchase pursuant to this Section 3.09 shall be made pursuant to the provisions
of Sections 3.01 through 3.06 hereof.

                                    ARTICLE 4.
                                    COVENANTS

Section 4.01      Payment Of Notes.

                  The Company shall pay or cause to be paid the principal of,
premium, if any, and interest on the Notes on the dates and in the manner
provided in the Notes. Principal, premium, if any, and interest shall be
considered paid on the date due if the Paying Agent, if other than the Company
or a Subsidiary thereof, holds as of 10:00 a.m. Eastern Time on the due date
money deposited by the Company in immediately available funds and designated for
and sufficient to pay all principal, premium, if any, and interest then due. The
Company shall pay all Additional Amounts, if any, in the same manner on the
dates and in the amounts set forth in the Registration Rights Agreement.

                  The Company shall pay interest (including post-petition
interest in any proceeding under any Bankruptcy Law) on overdue principal at the
rate equal to 1.0% per annum in excess of the then applicable interest rate on
the Notes to the extent lawful; it shall pay interest (including post-petition
interest in any proceeding under any Bankruptcy Law) on overdue installments of
interest and Additional Amounts (without regard to any applicable grace period)
at the same rate to the extent lawful.

Section 4.02      Maintenance Of Office Or Agency.

                  The Company shall maintain in the Borough of Manhattan, The
City of New York, an office or agency (which may be an office of the Trustee or
an affiliate of the Trustee, Registrar or co-registrar) where Notes may be
surrendered for registration of transfer or for exchange and where notices and
demands to or upon the Company in respect of the Notes and this Indenture may be
served. The Company shall give prompt written notice to the Trustee of the
location, and any change in the location, of such office or agency. If at any
time the Company shall fail to maintain any such required office or agency or
shall fail to furnish the Trustee with the address thereof, such presentations,
surrenders, notices and demands may be made or served at the Corporate Trust
Office of the Trustee.

                  The Company may also from time to time designate one or more
other offices or agencies where the Notes may be presented or surrendered for
any or all such purposes and may from time to time rescind such designations;
provided, however, that no such designation or rescission shall in any manner
relieve the Company of its obligation to maintain an office or agency in the
Borough of Manhattan, The City of New York for such purposes. The Company shall
give prompt written notice to the Trustee of any such designation or rescission
and of any change in the location of any such other office or agency.

                  The Company hereby designates the Corporate Trust Office of
the Trustee as one such office or agency of the Company in accordance with
Section 2.03.

                                       42
<PAGE>

Section 4.03      Reports.

                  Notwithstanding that the Company may not be subject to the
reporting requirements of Section 13 or 15(d) of the Exchange Act or otherwise
report on an annual and quarterly basis on forms provided for such annual and
quarterly reporting pursuant to rules and regulations promulgated by the SEC,
the Company shall file with the SEC (and provide the Trustee and Holders with
copies thereof), without cost to each Holder, within 15 days after it files them
with the SEC:

          (a) within 90 days after the end of each fiscal year, annual reports
     on Form 10-K (or any successor or comparable form) containing the
     information required to be contained therein (or required in such successor
     or comparable form);

          (b) within 45 days after the end of each of the first three fiscal
     quarters of each fiscal year, reports on Form 10-Q (or any successor or
     comparable form);

          (c) promptly from time to time after the occurrence of an event
     required to be therein reported, such other reports on Form 8-K (or any
     successor or comparable form); and

          (d) any other information, documents and other reports which the
     Company would be required to file with the SEC if it were subject to
     Section 13 or 15(d) of the Exchange Act; provided, however, the Company
     shall not be so obligated to file such reports with the SEC if the SEC does
     not permit such filing, in which event the Company will make available such
     information to prospective purchasers of Notes, in addition to providing
     such information to the Trustee and the Holders, in each case within 15
     days after the time the Company would be required to file such information
     with the SEC, if it were subject to Sections 13 or 15(d) of the Exchange
     Act.

                  Subject to the provisions of Article 7, delivery of such
reports, information and documents to the Trustee is for informational purposes
only and the Trustee's receipt of such shall not constitute constructive notice
of any information contained therein or determinable from information contained
therein, including the Company's compliance with any of its covenants hereunder
(as to which the Trustee is entitled to rely exclusively on Officers'
Certificates).

Section 4.04      Compliance Certificate.

                  (a) The Company shall deliver to the Trustee, within 90 days
after the end of each fiscal year, an Officers' Certificate stating that a
review of the activities of the Company and its Subsidiaries during the
preceding fiscal year has been made under the supervision of the signing
Officers with a view to determining whether the Company has kept, observed,
performed and fulfilled its obligations under this Indenture, and further
stating, as to each such Officer signing such certificate, that to the best of
his or her knowledge the Company has kept, observed, performed and fulfilled
each and every covenant contained in this Indenture and is not in default in the
performance or observance of any of the terms, provisions and conditions of this
Indenture (or, if a Default or Event of Default shall have occurred, describing
all such Defaults or Events of Default of which he or she may have knowledge and
what action the Company is taking or

                                       43
<PAGE>

proposes to take with respect thereto) and that to the best of his or her
knowledge no event has occurred and remains in existence by reason of which
payments on account of the principal of or interest, if any, on the Notes is
prohibited or if such event has occurred, a description of the event and what
action the Company is taking or proposes to take with respect thereto.

                  (b) So long as not contrary to the then current
recommendations of the American Institute of Certified Public Accountants, the
year-end financial statements delivered pursuant to Section 4.03(a) above shall
be accompanied by a written statement of the Company's independent public
accountants (who shall be a firm of established national reputation) that in
making the examination necessary for certification of such financial statements,
nothing has come to their attention that would lead them to believe that the
Company has violated any provisions of Article 4 or Article 5 hereof or, if any
such violation has occurred, specifying the nature and period of existence
thereof, it being understood that such accountants shall not be liable directly
or indirectly to any Person for any failure to obtain knowledge of any such
violation.

                  (c) The Company shall, so long as any of the Notes are
outstanding, deliver to the Trustee, as soon as possible and in any event within
five Business Days after any Officer becoming aware of any Default or Event of
Default, an Officers' Certificate specifying such Default or Event of Default
and what action the Company is taking or proposes to take with respect thereto.

Section 4.05      Taxes.

                  The Company shall pay, and shall cause each of its
Subsidiaries to pay, prior to delinquency, all material taxes, assessments, and
governmental levies except such as are contested in good faith and by
appropriate proceedings or where the failure to effect such payment is not
adverse in any material respect to the Holders of the Notes.

Section 4.06       Stay, Extension and Usury Laws

                  The Company and each of the Guarantors covenants (to the
extent that it may lawfully do so) that it will not at any time insist upon,
plead, or in any manner whatsoever claim or take the benefit or advantage of,
any stay, extension or usury law wherever enacted, now or at any time hereafter
in force, that may affect the covenants or the performance of this Indenture;
and, to the extent that it may lawfully do so, the Company and each of the
Guarantors hereby expressly waives all benefit or advantage of any such law, and
covenants that it will not, by resort to any such law, hinder, delay or impede
the execution of any power herein granted to the Trustee, but will suffer and
permit the execution of every such power as though no such law has been enacted.

Section 4.07      Restricted Payments.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, directly or indirectly: (i) declare or pay any
dividend or make any other payment or distribution on account of the Company's
or any of its Restricted Subsidiaries' Equity Interests (including, without
limitation, any payment in connection with any merger or consolidation involving
the Company) or to the direct or indirect holders of the Company's or any of its
Restricted

                                       44
<PAGE>

Subsidiaries' Equity Interests in their capacity as such (other than (A)
dividends or distributions payable in Equity Interests (other than Disqualified
Stock) of the Company or (B) dividends or distributions by a Restricted
Subsidiary so long as, in the case of any dividend or distribution payable on or
in respect of any class or series of securities issued by a Restricted
Subsidiary other than a Wholly Owned Restricted Subsidiary, the Company or a
Restricted Subsidiary receives at least its pro rata share of such dividend or
distribution in accordance with its Equity Interests in such class or series of
securities); (ii) purchase, redeem or otherwise acquire or retire for value
(including without limitation, in connection with any merger or consolidation
involving the Company) any Equity Interests of the Company or any direct or
indirect parent of the Company; (iii) make any payment on or with respect to, or
purchase, redeem, defease or otherwise acquire or retire for value any
Indebtedness that is subordinated to the Notes except a payment of interest or
principal at Stated Maturity; or (iv) make any Restricted Investment (all such
payments and other actions set forth in clauses (i) through (iv) above being
collectively referred to as "Restricted Payments"), unless, at the time of and
after giving effect to such Restricted Payment:

          (a) no Default or Event of Default shall have occurred and be
     continuing or would occur as a consequence thereof; and

          (b) the Company would, at the time of such Restricted Payment and
     after giving pro forma effect thereto as if such Restricted Payment had
     been made at the beginning of the applicable four-quarter period, have been
     permitted to incur at least $1.00 of additional Indebtedness pursuant to
     the Fixed Charge Coverage Ratio test set forth in the first paragraph of
     Section 4.09; and

          (c) such Restricted Payment, together with the aggregate amount of all
     other Restricted Payments made by the Company and its Restricted
     Subsidiaries since April 30, 1997 (excluding Restricted Payments permitted
     by clauses (ii) through (viii) of the next succeeding paragraph or of the
     kind contemplated by such clauses that were made prior to the date of this
     Indenture), is less than the sum of (i) 50% of the Consolidated Net Income
     of the Company for the period (taken as one accounting period) from July 1,
     1997 to the end of the Company's most recently ended fiscal quarter for
     which internal financial statements are available at the time of such
     Restricted Payment (or, if such Consolidated Net Income for such period is
     a deficit, less 100% of such deficit), plus (ii) 100% of the aggregate net
     cash proceeds received by the Company since April 30, 1997 as a
     contribution to its common equity capital or from the issue or sale of
     Equity Interests of the Company (other than Disqualified Stock) or from the
     issue or sale of Disqualified Stock or debt securities of the Company that
     have been converted into such Equity Interests (other than Equity Interests
     (or Disqualified Stock or convertible debt securities) sold to a Subsidiary
     of the Company and other than Disqualified Stock or convertible debt
     securities that have been converted into Disqualified Stock), plus (iii) to
     the extent that any Restricted Investment that was made after April 30,
     1997 is sold for cash or otherwise liquidated or repaid for cash, the
     amount of cash received in connection therewith (or from the sale of
     Marketable Securities received in connection therewith), plus (iv) to the
     extent not already included in such Consolidated Net Income of the Company
     for such period and without duplication, (A) 100% of the aggregate amount
     of cash received as a dividend from an Unrestricted Subsidiary, (B) 100% of
     the cash

                                       45
<PAGE>

     received upon the sale of Marketable Securities received as a dividend from
     an Unrestricted Subsidiary, and (C) 100% of the net assets of any
     Unrestricted Subsidiary on the date that it becomes a Restricted
     Subsidiary.

                  The foregoing provisions shall not prohibit: (i) the payment
of any dividend within 60 days after the date of declaration thereof, if at said
date of declaration such payment would have complied with the provisions of this
Indenture; (ii) the redemption, repurchase, retirement, defeasance or other
acquisition of any subordinated Indebtedness or Equity Interests of the Company
in exchange for, or out of the net cash proceeds of the substantially concurrent
sale (other than to a Subsidiary of the Company) of, other Equity Interests of
the Company (other than any Disqualified Stock); provided that the amount of any
such net cash proceeds that are utilized for any such redemption, repurchase,
retirement, defeasance or other acquisition shall be excluded from clause
(c)(ii) of the preceding paragraph; (iii) the defeasance, redemption, repurchase
or other acquisition of subordinated Indebtedness (other than intercompany
Indebtedness) in exchange for, or with the net cash proceeds from an incurrence
of, Permitted Refinancing Indebtedness; (iv) the repurchase, retirement or other
acquisition or retirement for value of common Equity Interests of the Company or
Holdings held by any future, present or former employee, director or consultant
of the Company or any Subsidiary or Holdings issued pursuant to any management
equity plan or stock option plan or any other management or employee benefit
plan or agreement; provided, however, that the aggregate amount of Restricted
Payments made under this clause (iv) does not exceed $1.5 million in any
calendar year and provided further that cancellation of Indebtedness owing to
the Company from members of management of the Company or any of its Restricted
Subsidiaries in connection with a repurchase of Equity Interests of the Company
shall not be deemed to constitute a Restricted Payment for purposes of this
covenant or any other provision of this Indenture; (v) repurchases of Equity
Interests deemed to occur upon exercise of stock options upon surrender of
Equity Interests to pay the exercise price of such options; (vi) payments to
Holdings (A) in amounts equal to the amounts required for Holdings to pay
franchise taxes and other fees required to maintain its legal existence and
provide for other operating costs of up to $500,000 per fiscal year and (B) in
amounts equal to amounts required for Holdings to pay federal, state and local
income taxes to the extent such income taxes are actually due and owing;
provided that the aggregate amount paid under this clause (B) does not exceed
the amount that the Company would be required to pay in respect of the income of
the Company and its Subsidiaries if the Company were a stand alone entity that
was not owned by Holdings; (vii) dividends paid to Holdings in amounts equal to
amounts required for Holdings to pay interest and/or principal on Indebtedness
that has been guaranteed by, or is otherwise considered Indebtedness of, the
Company; and (viii) other Restricted Payments in an aggregate amount since May
22, 1998 not to exceed $20.0 million.

                  The Board of Directors of the Company may designate any
Restricted Subsidiary to be an Unrestricted Subsidiary if such designation would
not cause a Default. For purposes of making such determination, all outstanding
Investments by the Company and its Restricted Subsidiaries (except to the extent
repaid in cash) in the Subsidiary so designated shall be deemed to be Restricted
Payments at the time of such designation and shall reduce the amount available
for Restricted Payments under the first paragraph of this covenant. All such
outstanding Investments shall be deemed to constitute Investments in an amount
equal to the fair market value of such Investments at the time of such
designation. Such designation shall only be

                                       46
<PAGE>

permitted if such Restricted Payment would be permitted at such time and if such
Restricted Subsidiary otherwise meets the definition of an Unrestricted
Subsidiary.

                  The amount of all Restricted Payments (other than cash) shall
be the fair market value on the date of the Restricted Payment of the asset(s)
or securities proposed to be transferred or issued by the Company or such
Restricted Subsidiary, as the case may be, pursuant to the Restricted Payment.
The fair market value of any non-cash Restricted Payment shall be determined by
the Board of Directors whose resolution with respect thereto shall be delivered
to the Trustee. Not later than the date of making any Restricted Payment, the
Company shall deliver to the Trustee an Officers' Certificate stating that such
Restricted Payment is permitted and setting forth the basis upon which the
calculations required by Section 4.07 were computed.

Section 4.08      Dividend And Other Payment Restrictions Affecting Restricted
                  Subsidiaries.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, directly or indirectly, create or otherwise cause or
suffer to exist or become effective any encumbrance or restriction on the
ability of any Restricted Subsidiary to (i)(A) pay dividends or make any other
distributions to the Company or any of its Restricted Subsidiaries (1) on its
Capital Stock or (2) with respect to any other interest or participation in, or
measured by, its profits, or (B) pay any indebtedness owed to the Company or any
of its Restricted Subsidiaries, (ii) make loans or advances to the Company or
any of its Restricted Subsidiaries, or (iii) transfer any of its properties or
assets to the Company or any of its Restricted Subsidiaries. However, the
preceding restrictions will not apply to encumbrances or restrictions existing
under or by reason of (A) the provisions of security agreements that restrict
the transfer of assets that are subject to a Lien created by such security
agreements, (B) the provisions of agreements governing Indebtedness incurred
pursuant to clause (v) of the second paragraph of Section 4.09, (C) the Senior
Credit Facilities, this Indenture, the Notes, the Exchange Notes, the May 1998
Indenture, the May 1998 Notes, the December 1998 Indenture, the December 1998
Notes, the 2002 Notes and the 2002 Indenture, (D) applicable law, (E) any
instrument governing Indebtedness or Capital Stock of a Person acquired by the
Company or any of its Restricted Subsidiaries as in effect at the time of such
acquisition (except to the extent such Indebtedness was incurred in connection
with or in contemplation of such acquisition), which encumbrance or restriction
is not applicable to any Person, or the properties or assets of any Person,
other than the Person, or the property or assets of the Person, so acquired,
provided that, in the case of Indebtedness, such Indebtedness was permitted by
the terms of this Indenture to be incurred, (F) by reason of customary
non-assignment provisions in leases entered into in the ordinary course of
business and consistent with past practices, (G) purchase money obligations for
property acquired in the ordinary course of business that impose restrictions of
the nature described in this clause (iii) of the preceding paragraph, (H)
Permitted Refinancing Indebtedness, provided that the restrictions contained in
the agreements governing such Permitted Refinancing Indebtedness are not
materially more restrictive, taken as a whole, than those contained in the
agreements governing the Indebtedness being refinanced, (I) contracts for the
sale of assets, including, without limitation, customary restrictions with
respect to a Subsidiary pursuant to an agreement that has been entered into for
the sale or disposition of all or substantially all of the Capital Stock or
assets of such Subsidiary, (J) agreements relating to secured Indebtedness
otherwise permitted to be incurred pursuant to 4.09 and 4.12 that limit the
right of the debtor to dispose of the assets securing such Indebtedness, (K)
restrictions on cash or other deposits or net worth imposed by

                                       47
<PAGE>

customers under contracts entered into in the ordinary course of business, or
(L) customary provisions in joint venture agreements and other similar
agreements entered into in the ordinary course of business.

Section 4.09      Incurrence of Indebtedness and Issuance Of Preferred Stock.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, directly or indirectly, create, incur, issue,
assume, guarantee or otherwise become directly or indirectly liable,
contingently or otherwise, with respect to (collectively, "incur") any
Indebtedness (including Acquired Debt) and that the Company shall not issue any
Disqualified Stock and shall not permit any of its Restricted Subsidiaries to
issue any shares of preferred stock; provided, however, that the Company and any
Restricted Subsidiary may incur Indebtedness (including Acquired Debt) or issue
shares of preferred stock if the Fixed Charge Coverage Ratio for the Company's
most recently ended four full fiscal quarters for which internal financial
statements are available immediately preceding the date on which such additional
Indebtedness is incurred or such preferred stock is issued would have been at
least 2.0 to 1.0, determined on a pro forma basis (including a pro forma
application of the net proceeds therefrom), as if the additional Indebtedness
had been incurred, or the preferred stock had been issued, as the case may be,
at the beginning of such four-quarter period.

                  The provisions of the first paragraph of this Section 4.09
shall not apply to the incurrence of any of the following items of Indebtedness
(collectively, "Permitted Debt"):

          (i) the incurrence by the Company of additional Indebtedness under
     Credit Facilities (and the guarantee thereof by the Guarantors) in an
     aggregate principal amount outstanding pursuant to this clause (i) at any
     one time (with letters of credit being deemed to have a principal amount
     equal to the maximum potential liability of the Company and its Restricted
     Subsidiaries thereunder), including all Permitted Refinancing Indebtedness
     then outstanding incurred to refund, refinance or replace any other
     Indebtedness incurred pursuant to this clause (i), not to exceed $750.0
     million less the aggregate amount of all Net Proceeds of Asset Sales
     applied to repay any such Indebtedness pursuant to Section 4.10;

          (ii) the incurrence by the Company and its Restricted Subsidiaries of
     the Existing Indebtedness;

          (iii) the incurrence by the Company and the Guarantors of $400.0
     million in aggregate principal amount of each of the Notes and the Exchange
     Notes and the Subsidiary Guarantees thereof;

          (iv) the incurrence by the Company or any of its Restricted
     Subsidiaries of Indebtedness represented by Capital Lease Obligations,
     mortgage financings or purchase money obligations, in each case incurred
     for the purpose of financing all or any part of the purchase price or cost
     of construction or improvement of property, plant or equipment used in the
     business of the Company or such Restricted Subsidiary, in an aggregate
     principal amount, including all Permitted Refinancing Indebtedness then
     outstanding

                                       48
<PAGE>

     incurred to refund, refinance or replace any other Indebtedness incurred
     pursuant to this clause (iv), not to exceed $100.0 million at any time
     outstanding;

          (v) the incurrence by the Company or any of its Restricted
     Subsidiaries of Indebtedness in connection with the acquisition of assets
     or a new Restricted Subsidiary; provided that such Indebtedness was
     incurred by the prior owner of such assets or such Restricted Subsidiary
     prior to such acquisition by the Company or one of its Restricted
     Subsidiaries and was not incurred in connection with, or in contemplation
     of, such acquisition by the Company or one of its Restricted Subsidiaries;
     and provided further that the principal amount (or accreted value, as
     applicable) of such Indebtedness, together with any other outstanding
     Indebtedness incurred pursuant to this clause (v), does not exceed $50.0
     million;

          (vi) the incurrence by the Company or any of its Restricted
     Subsidiaries of Permitted Refinancing Indebtedness in exchange for, or the
     net proceeds of which are used to refund, refinance or replace,
     Indebtedness that was permitted by this Indenture to be incurred (other
     than intercompany Indebtedness or Indebtedness incurred pursuant to clause
     (i) above);

          (vii) Indebtedness incurred by the Company or any of its Restricted
     Subsidiaries constituting reimbursement obligations with respect to letters
     of credit issued in the ordinary course of business in respect of workers'
     compensation claims or self-insurance, or other Indebtedness with respect
     to reimbursement type obligations regarding workers' compensation claims;
     provided, however, that upon the drawing of such letters of credit or the
     incurrence of such Indebtedness, such obligations are reimbursed within 30
     days following such drawing or incurrence;

          (viii) Indebtedness arising from agreements of the Company or a
     Restricted Subsidiary providing for indemnification, adjustment of purchase
     price or similar obligations, in each case, incurred or assumed in
     connection with the disposition of any business, assets or a Subsidiary,
     other than guarantees of Indebtedness incurred by any Person acquiring all
     or any portion of such business, assets or a Subsidiary for the purpose of
     financing such acquisition; provided, however, that (A) such Indebtedness
     is not reflected on the balance sheet of the Company or any Restricted
     Subsidiary (contingent obligations referred to in a footnote to financial
     statements and not otherwise reflected on the balance sheet shall not be
     deemed to be reflected on such balance sheet for purposes of this clause
     (A)) and (B) the maximum assumable liability in respect of all such
     Indebtedness shall at no time exceed the gross proceeds including noncash
     proceeds (the fair market value of such noncash proceeds being measured at
     the time received and without giving effect to any subsequent changes in
     value) actually received by the Company and its Restricted Subsidiaries in
     connection with such disposition;

          (ix) the incurrence by the Company or any of its Restricted
     Subsidiaries of intercompany Indebtedness between or among the Company and
     any of its Restricted Subsidiaries; provided, however, that (A) if the
     Company is the obligor on such Indebtedness, such Indebtedness is expressly
     subordinated to the prior payment in full in cash of all Obligations with
     respect to the Notes and (B)(1) any subsequent issuance or

                                       49
<PAGE>

     transfer of Equity Interests that results in any such Indebtedness being
     held by a Person other than the Company or one of its Restricted
     Subsidiaries and (2) any sale or other transfer of any such Indebtedness to
     a Person that is not either the Company or one of its Restricted
     Subsidiaries shall be deemed, in each case, to constitute an incurrence of
     such Indebtedness by the Company or such Restricted Subsidiary, as the case
     may be;

          (x) the incurrence by the Company or any of the Guarantors of Hedging
     Obligations that are incurred for the purpose of (A) fixing, hedging or
     capping interest rate risk with respect to any floating rate Indebtedness
     that is permitted by the terms of this Indenture to be outstanding or (B)
     protecting the Company and its Restricted Subsidiaries against changes in
     currency exchange rates;

          (xi) the guarantee by the Company or any of the Guarantors of
     Indebtedness of the Company or a Restricted Subsidiary of the Company that
     was permitted to be incurred by another provision of this Section 4.09;

          (xii) the incurrence by the Company's Unrestricted Subsidiaries of
     Non-Recourse Debt, provided, however, that if any such Indebtedness ceases
     to be Non-Recourse Debt of an Unrestricted Subsidiary, such event shall be
     deemed to constitute an incurrence of Indebtedness by a Restricted
     Subsidiary of the Company that was not permitted by this clause (xii), and
     the issuance of preferred stock by Unrestricted Subsidiaries;

          (xiii) obligations in respect of performance and surety bonds and
     completion guarantees provided by the Company or any Restricted
     Subsidiaries in the ordinary course of business; and

          (xiv) the incurrence by the Company or any of its Restricted
     Subsidiaries of additional Indebtedness in an aggregate principal amount
     (or accreted value, as applicable) at any time outstanding, including all
     Permitted Refinancing Indebtedness then outstanding incurred to refund,
     refinance or replace any other Indebtedness incurred pursuant to this
     clause (xiv), not to exceed $100.0 million.

                  For purposes of determining compliance with this Section 4.09,
in the event that an item of Indebtedness meets the criteria of more than one of
the categories of Permitted Debt described in clauses (i) through (xiv) above or
is entitled to be incurred pursuant to the first paragraph of this Section 4.09,
the Company shall, in its sole discretion, classify, or later reclassify, such
item of Indebtedness in any manner that complies with this covenant. Accrual of
interest, the accretion of accreted value and the payment of interest in the
form of additional Indebtedness shall not be deemed to be an incurrence of
Indebtedness for purposes of this Section 4.09.

Section 4.10      Asset Sales.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, consummate an Asset Sale unless (i) the Company or
the Restricted Subsidiary, as the case may be, receives consideration at the
time of such Asset Sale at least equal to the fair market value (evidenced by an
Officers' Certificate delivered to the Trustee which will include a resolution
of

                                       50
<PAGE>

the Board of Directors with respect to such fair market value in the event such
Asset Sale involves aggregate consideration in excess of $10.0 million) of the
assets or Equity Interests issued or sold or otherwise disposed of and (ii) at
least 80% of the consideration therefor received by the Company or such
Restricted Subsidiary, as the case may be, consists of cash, Cash Equivalents
and/or Marketable Securities; provided, however, that (A) the amount of any
Senior Debt of the Company or such Restricted Subsidiary that is assumed by the
transferee in any such transaction and (B) any consideration received by the
Company or such Restricted Subsidiary, as the case may be, that consists of (1)
all or substantially all of the assets of one or more Similar Businesses, (2)
other long-term assets that are used or useful in one or more Similar Businesses
and (3) Permitted Securities shall be deemed to be cash for purposes of this
provision.

                  Within 365 days after the receipt of any Net Proceeds from an
Asset Sale, the Company may apply such Net Proceeds, at its option, (i) to repay
Indebtedness under a Credit Facility, (ii) to the acquisition of Permitted
Securities, (iii) to the acquisition of all or substantially all of the assets
of one or more Similar Businesses, (iv) to the making of a capital expenditure
or (v) to the acquisition of other long-term assets in a Similar Business.
Pending the final application of any such Net Proceeds, the Company may
temporarily reduce Indebtedness under a Credit Facility or otherwise invest such
Net Proceeds in any manner that is not prohibited by this Indenture. Any Net
Proceeds from Asset Sales that are not applied or invested as provided in the
first sentence of this paragraph shall be deemed to constitute "Excess
Proceeds". When the aggregate amount of Excess Proceeds exceeds $10.0 million,
the Company will be required to make an offer to all Holders of the Notes (an
"Asset Sale Offer") and any other Indebtedness that ranks pari passu with the
Notes (including, without limitation, the May 1998 Notes, the December 1998
Notes and the 2002 Notes) that, by its terms, requires the Company to offer to
repurchase such Indebtedness with such Excess Proceeds to purchase the maximum
principal amount of Notes and pari passu Indebtedness that may be purchased out
of such Excess Proceeds at an offer price in cash in an amount equal to 100% of
the principal amount thereof plus accrued and unpaid interest thereon, if any,
to the date of purchase, in accordance with the procedures set forth in this
Indenture. To the extent that the aggregate amount of Notes or pari passu
Indebtedness tendered pursuant to an Asset Sale Offer is less than the Excess
Proceeds, the Company may use any Excess Proceeds for general corporate
purposes. If the aggregate principal amount of Notes or pari passu Indebtedness
surrendered by Holders thereof exceeds the amount of Excess Proceeds in an Asset
Sale Offer, the Company shall repurchase such Indebtedness on a pro rata basis
and the Trustee shall select the Notes to be purchased on a pro rata basis. Upon
completion of such offer to purchase, the amount of Excess Proceeds shall be
reset at zero.

Section 4.11      Transactions With Affiliates.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, make any payment to, or sell, lease, transfer or
otherwise dispose of any of its properties or assets to, or purchase any
property or assets from, or enter into or make or amend any transaction,
contract, agreement, understanding, loan, advance or guarantee with, or for the
benefit of, any Affiliate (each of the foregoing, an "Affiliate Transaction"),
unless (i) such Affiliate Transaction is on terms that are no less favorable to
the Company or the relevant Restricted Subsidiary than those that would have
been obtained in a comparable transaction by

                                       51
<PAGE>

the Company or such Restricted Subsidiary with an unrelated Person and (ii) the
Company delivers to the Trustee (A) with respect to any Affiliate Transaction or
series of related Affiliate Transactions involving aggregate consideration in
excess of $5.0 million, a resolution of the Board of Directors set forth in an
Officers' Certificate certifying that such Affiliate Transaction complies with
clause (i) above and that such Affiliate Transaction has been approved by a
majority of the disinterested members of the Board of Directors and (B) with
respect to any Affiliate Transaction or series of related Affiliate Transactions
involving aggregate consideration in excess of $15.0 million, an opinion as to
the fairness to the Holders of such Affiliate Transaction from a financial point
of view issued by an accounting, appraisal or investment banking firm of
national standing.

                  The foregoing provisions shall not prohibit: (i) any
employment agreement entered into by the Company or any of its Restricted
Subsidiaries in the ordinary course of business; (ii) any transaction with a
Lehman Investor; (iii) any transaction between or among the Company and/or its
Restricted Subsidiaries; (iv) transactions between the Company or any of its
Restricted Subsidiaries, on the one hand, and a Permitted Joint Venture, on the
other hand, on terms that are not materially less favorable to the Company or
the applicable Restricted Subsidiary of the Company than those that could have
been obtained from an unaffiliated third party; provided that (A) in the case of
any such transaction or series of related transactions pursuant to this clause
(iv) involving aggregate consideration in excess of $5.0 million but less than
$25.0 million, such transaction or series of transactions (or the agreement
pursuant to which the transactions were executed) was approved by the Company's
Chief Executive Officer or Chief Financial Officer and (B) in the case of any
such transaction or series of related transactions pursuant to this clause (iv)
involving aggregate consideration equal to or in excess of $25.0 million, such
transaction or series of related transactions (or the agreement pursuant to
which the transactions were executed) was approved by a majority of the
disinterested members of the Board of Directors; (v) any transaction pursuant to
and in accordance with the provisions of the Transaction Documents as the same
are in effect on the date of this Indenture; and (vi) any Restricted Payment
that is permitted by the provisions of Section 4.07.

Section 4.12      Liens.

                  The Company shall not, and shall not permit any of its
Restricted Subsidiaries to, directly or indirectly, create, incur, assume or
suffer to exist any Lien (other than Permitted Liens) securing Indebtedness on
any asset now owned or hereafter acquired, or any income or profits therefrom or
assign or convey any right to receive income therefrom, unless all payments due
under this Indenture and the Notes are secured on an equal and ratable basis
with the Obligations so secured until such time as such Obligations are no
longer secured by a Lien.

Section 4.13      Future Subsidiary Guarantees.

                  If the Company or any of its Subsidiaries shall acquire or
create a Subsidiary (other than a Foreign Subsidiary or an Unrestricted
Subsidiary) after the date of this Indenture, then such Subsidiary shall execute
a Subsidiary Guarantee, in the form of the Supplemental Indenture attached
hereto as Exhibit E, and the Form of Notation on Senior Subordinated Note,
attached hereto as Exhibit F, and deliver an opinion of counsel as to the
validity of such Subsidiary Guarantee, in accordance with the terms of this
Indenture. The Subsidiary Guarantee

                                       52
<PAGE>

of each Guarantor will be subordinated to the prior payment in full of all
Senior Debt of such Guarantor, which would include the guarantees of amounts
borrowed under the Senior Credit Facilities. The obligations of each Guarantor
under its Subsidiary Guarantee will be limited so as not to constitute a
fraudulent conveyance under applicable law.

                  Notwithstanding the foregoing paragraph, for so long as
certain covenants are suspended pursuant to Section 4.18 hereof, no newly
acquired or created Subsidiary will be required to execute a Subsidiary
Guarantee or the related Notation on Senior Subordinated Note unless such
Subsidiary Guarantees Indebtedness of the Company under a Credit Facility.
However, any Subsidiary (other than a Foreign Subsidiary or an Unrestricted
Subsidiary) that Guarantees any Indebtedness of the Company under a Credit
Facility will become a Subsidiary Guarantor and, if at any time certain
covenants are reinstituted pursuant to Section 4.18 hereof, any newly acquired
or created Subsidiary (other than a Foreign Subsidiary or an Unrestricted
Subsidiary) will Guarantee the Notes on the terms and conditions set forth in
this Indenture.

                  No Guarantor may consolidate with or merge with or into
(whether or not such Guarantor is the surviving Person) another Person (except
the Company or another Guarantor) unless (i) subject to the provisions of the
following paragraph, the Person formed by or surviving any such consolidation or
merger (if other than such Guarantor) or to which such sale, assignment,
transfer, lease, conveyance or other disposition shall have been made assumes
all the obligations of such Guarantor pursuant to a supplemental indenture in
form and substance reasonably satisfactory to the Trustee, under the Notes and
this Indenture; (ii) immediately after giving effect to such transaction, no
Default or Event of Default exists; and (iii) the Company (A) would be permitted
by virtue of the Company's pro forma Fixed Charge Coverage Ratio, immediately
after giving effect to such transaction, to incur at least $1.00 of additional
Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in
Section 4.09 or (B) would have a pro forma Fixed Charge Coverage Ratio that is
greater than the actual Fixed Charge Coverage Ratio for the same four-quarter
period without giving pro forma effect to such transaction.

                  Notwithstanding the foregoing clause (iii), (i) any Guarantor
may consolidate with, merge into or transfer all or part of its properties and
assets to the Company or to another Guarantor and (ii) any Guarantor may merge
with an Affiliate that has no significant assets or liabilities and was
incorporated solely for the purpose of reincorporating such Guarantor in another
State of the United States so long as the amount of Indebtedness of the Company
and its Restricted Subsidiaries is not increased thereby.

                  In the event of a sale or other disposition of all of the
assets of any Guarantor, by way of merger, consolidation or otherwise, or a sale
or other disposition of all of the capital stock of any Guarantor, then such
Guarantor (in the event of a sale or other disposition, by way of such a merger,
consolidation or otherwise, of all of the capital stock of such Guarantor) or
the corporation acquiring the property (in the event of a sale or other
disposition of all of the assets of such Guarantor) will be released and
relieved of any obligations under its Subsidiary Guarantee; provided that the
Net Proceeds of such sale or other disposition are applied in accordance with
the applicable provisions of Section 4.10.

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<PAGE>

Section 4.14      Corporate Existence.

                  Subject to Article 5 hereof, the Company shall do or cause to
be done all things necessary to preserve and keep in full force and effect (i)
its corporate existence, and the corporate, partnership or other existence of
each of its Restricted Subsidiaries, in accordance with the respective
organizational documents (as the same may be amended from time to time) of the
Company or any such Restricted Subsidiary and (ii) the rights (charter and
statutory), licenses and franchises of the Company and its Restricted
Subsidiaries; provided, however, that the Company shall not be required to
preserve any such right, license or franchise, or the corporate, partnership or
other existence of any of its Restricted Subsidiaries, if the Board of Directors
shall determine that the preservation thereof is no longer desirable in the
conduct of the business of the Company and its Restricted Subsidiaries, taken as
a whole, and that the loss thereof is not adverse in any material respect to the
Holders of the Notes.

Section 4.15      Offer To Repurchase Upon Change Of Control.

                  (a) Upon the occurrence of a Change of Control, each Holder of
Notes shall have the right to require the Company to repurchase all or any part
(equal to $1,000 or an integral multiple thereof) of such Holder's Notes
pursuant to the offer described below (the "Change of Control Offer") at an
offer price in cash equal to 101% of the aggregate principal amount thereof plus
accrued and unpaid interest and Additional Amounts thereon, if any, to the date
of purchase (the "Change of Control Payment"). Within ten days following any
Change of Control, the Company shall mail a notice to each Holder describing the
transaction or transactions that constitute the Change of Control and offering
to repurchase Notes on the date specified in such notice, which date shall be no
earlier than 30 days and no later than 60 days from the date such notice is
mailed (the "Change of Control Payment Date"). Such notice, which shall govern
the terms of the Change of Control offer, shall state: (i) that the Change of
Control Offer is being made pursuant to this Section 4.15 and that all Notes
tendered will be accepted for payment; (ii) the purchase price and the purchase
date; (iii) that any Note not tendered will continue to accrue interest; (iv)
that, unless the Company defaults in the payment of the Change of Control
Payment, all Notes accepted for payment pursuant to the Change of Control Offer
shall cease to accrue interest after the Change of Control Payment Date; (v)
that Holders electing to have any Notes purchased pursuant to a Change of
Control Offer will be required to surrender the Notes, with the form entitled
"Option of Holder to Elect Purchase" on the reverse of the Notes completed, to
the Paying Agent at the address specified in the notice prior to the close of
business on the third Business Day preceding the Change of Control Payment Date;
(vi) that Holders will be entitled to withdraw their election if the Paying
Agent receives, not later than the close of business on the second Business Day
preceding the Change of Control Payment Date, a telegram, telex, facsimile
transmission or letter setting forth the name of the Holder, the principal
amount of Notes delivered for purchase, and a statement that such Holder is
withdrawing his election to have the Notes purchased; and (vii) that Holders
whose Notes are being purchased only in part will be issued new Notes equal in
principal amount to the unpurchased portion of the Notes surrendered, which
unpurchased portion must be equal to $1,000 in principal amount or an integral
multiple thereof. The Company shall comply with the requirements of Rule 14e-1
under the Exchange Act and any other securities laws and regulations thereunder
to the extent such laws and regulations are applicable in connection with the
repurchase of Notes in connection with a Change of Control.

                                       54
<PAGE>

                  (b) On the Change of Control Payment Date, the Company shall,
to the extent lawful, (i) accept for payment all Notes or portions thereof
properly tendered pursuant to the Change of Control Offer, (ii) deposit with the
Paying Agent an amount equal to the Change of Control Payment in respect of all
Notes or portions thereof so tendered and (iii) deliver or cause to be delivered
to the Trustee the Notes so accepted together with an Officers' Certificate
stating the aggregate principal amount of Notes or portions thereof being
purchased by the Company. The Paying Agent shall promptly mail to each Holder of
Notes so tendered the Change of Control Payment for such Notes, and the Trustee
shall promptly authenticate and mail (or cause to be transferred by book entry)
to each Holder a new Note equal in principal amount to any unpurchased portion
of the Notes surrendered, if any; provided that each such new Note shall be in a
principal amount of $1,000 or an integral multiple thereof. Prior to mailing a
Change of Control Offer, but in any event within 90 days following a Change of
Control, the Company shall 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 Notes
required by this Section 4.15. The Company shall publicly announce the results
of the Change of Control Offer on or as soon as practicable after the Change of
Control Payment Date.

Section 4.16      No Senior Subordinated Debt.

                  The Company shall 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 Notes. No Guarantor shall 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.

Section 4.17      Payments For Consent.

                  Neither the Company nor any of its Subsidiaries shall,
directly or indirectly, pay or cause to be paid any consideration, whether by
way of interest, fee or otherwise, to any Holder of any Notes for or as an
inducement to any consent, waiver or amendment of any of the terms or provisions
of this Indenture or the Notes unless such consideration is offered to be paid
or is paid to all Holders of the Notes that consent, waive or agree to amend in
the time frame set forth in the solicitation documents relating to such consent,
waiver or agreement.

Section 4.18      Changes in Covenants when Notes Rated Investment Grade.

                  If on any date following the date of this Indenture: (i) the
Notes are rated Baa3 or better by Moody's and BBB- or better by S&P (or, if
either such entity ceases to rate the Notes for reasons outside of the control
of the Company, the equivalent investment grade credit rating from any other
"nationally recognized statistical rating organization" within the meaning of
Rule 15c3-1(c)(2)(vi)(F) under the Exchange Act selected by Company as a
replacement agency) and (ii) no Default or Event of Default shall have occurred
and be continuing, then, beginning on that day and subject to the provisions of
the following paragraph, the provisions and covenants contained in Sections
4.07, 4.08, 4.09, 4.10, 4.11 and 4.17 hereof, clauses (iii)(A) and (B) of the

                                       55
<PAGE>

third paragraph of Section 4.13 hereof and clauses (iv)(A) and (B) of the first
paragraph of Section 5.01 hereof will be suspended.

                  In addition, following the achievement of such investment
grade ratings, (i) the Subsidiary Guarantees of the Company's Restricted
Subsidiaries will be released at the time of the release of Guarantees under all
outstanding Credit Facilities; provided that in the event that any such
Restricted Subsidiary thereafter Guarantees any Indebtedness of the Company
under any Credit Facility (or if any released Guarantee under any Credit
Facility is reinstated or renewed), or if at any time certain covenants are
reinstituted as provided in the following paragraph, then such Restricted
Subsidiary will Guarantee the Notes on the terms and conditions set forth in
this Indenture and (ii) as described in Section 4.13 hereof, no Restricted
Subsidiary thereafter acquired or created will be required to execute a
Subsidiary Guarantee unless such Subsidiary Guarantees Indebtedness of the
Company under a Credit Facility.

                  Notwithstanding the foregoing, if the rating assigned to the
Notes by any such rating agency should subsequently decline to below Baa3 or
BBB-, respectively, the foregoing covenants shall be reinstituted as of and from
the date of such rating decline. For purposes of determining whether a
Restricted Payment exceeds the allowable amount under the calculation described
in subparagraphs (i) through (iv) of Section 4.07(c) hereof, the covenant
contained in Section 4.07 hereof will be interpreted as if it had been in effect
since the date of this Indenture. However, no default will be deemed to have
occurred as a result of the provisions and covenants contained in Sections 4.07,
4.08, 4.09, 4.10, 4.11 and 4.17 hereof, clauses (iii)(A) and (B) of the third
paragraph of Section 4.13 hereof and clauses (iv)(A) and (B) of the first
paragraph of Section 5.01 hereof while those provisions and covenants were
suspended.

                                   ARTICLE 5.
                                   SUCCESSORS

Section 5.01      Merger, Consolidation, Or Sale Of Assets.

                  The Company may not consolidate or merge with or into (whether
or not the Company is the surviving corporation), or sell, assign, transfer,
lease, convey or otherwise dispose of all or substantially all of its properties
or assets in one or more related transactions, to another Person unless (i) the
Company is the surviving corporation or the Person formed by or surviving any
such consolidation or merger (if other than the Company) or to which such sale,
assignment, transfer, lease, conveyance or other disposition shall have been
made is a corporation organized or existing under the laws of the United States,
any state thereof or the District of Columbia; (ii) the Person formed by or
surviving any such consolidation or merger (if other than the Company) or the
Person to which such sale, assignment, transfer, lease, conveyance or other
disposition shall have been made assumes all the obligations of the Company
under the Registration Rights Agreement, the Notes and this Indenture pursuant
to a supplemental indenture in a form reasonably satisfactory to the Trustee;
(iii) immediately after such transaction no Default or Event of Default exists;
and (iv) except in the case of a merger of the Company with or into a Wholly
Owned Restricted Subsidiary of the Company, the Company or the Person formed by
or surviving any such consolidation or merger (if other than the Company), or to
which such sale, assignment, transfer, lease, conveyance or other disposition
shall have been made, after giving pro forma effect to such transaction as if
such transaction had

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occurred at the beginning of the most recently ended four full fiscal quarters
for which internal financial statements are available immediately preceding such
transaction either: (A) would be permitted to incur at least $1.00 of additional
Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the
first paragraph of Section 4.09 or (B) would have a pro forma Fixed Charge
Coverage Ratio that is greater than the actual Fixed Charge Coverage Ratio for
the same four-quarter period without giving pro forma effect to such
transaction.

                  Notwithstanding clause (iv) in the immediately foregoing
paragraph, (i) any Restricted Subsidiary may consolidate with, merge into or
transfer all or part of its properties and assets to the Company; and (ii) the
Company may merge with an Affiliate that has no significant assets or
liabilities and was incorporated solely for the purpose of reincorporating the
Company in another State of the United States so long as the amount of
Indebtedness of the Company and its Restricted Subsidiaries is not increased
thereby.

Section 5.02      Successor Corporation Substituted.

                  Upon any consolidation or merger, or any sale, assignment,
transfer, lease, conveyance or other disposition of all or substantially all of
the assets of the Company in accordance with Section 5.01 hereof, the successor
corporation formed by such consolidation or into or with which the Company is
merged or to which such sale, assignment, transfer, lease, conveyance or other
disposition is made shall succeed to, be substituted for (so that from and after
the date of such consolidation, merger, sale, lease, conveyance or other
disposition, the provisions of this Indenture referring to the "Company" shall
refer instead to the successor corporation and not to the Company), and may
exercise every right and power of, the Company under this Indenture with the
same effect as if such successor Person had been named as the Company herein;
provided, however, that the predecessor Company shall not be relieved from the
obligation to pay the principal of and interest on the Notes except in the case
of a sale of all of the Company's assets that meets the requirements of Section
5.01 hereof.

                                   ARTICLE 6.
                              DEFAULTS AND REMEDIES

Section 6.01      Events of Default.

                  An "Event of Default" occurs if:

          (a) the Company defaults in the payment when due of interest on, or
     Additional Amounts, if any, with respect to, the Notes and such default
     continues for a period of 30 days (whether or not prohibited by the
     subordination provisions of this Indenture);

          (b) the Company defaults in the payment when due of the principal of
     or premium, if any, on the Notes (whether or not prohibited by the
     subordination provisions of this Indenture);

          (c) the Company fails to comply with any of the provisions of Section
     4.10, 4.15, or 5.01 hereof;

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          (d) the Company fails to observe or perform any other covenant or
     other agreement in this Indenture or the Notes for 60 days after notice to
     the Company by the Trustee or the Holders of at least 25% in aggregate
     principal amount of the Notes then outstanding;

          (e) a default occurs under any mortgage, indenture or instrument under
     which there may be issued or by which there may be secured or evidenced any
     Indebtedness for money borrowed by the Company or any of its Restricted
     Subsidiaries (or the payment of which is guaranteed by the Company or any
     of its Restricted Subsidiaries), whether such Indebtedness or guarantee now
     exists, or is created after the date of this Indenture, which default
     results in the acceleration of such Indebtedness prior to its express
     maturity and, in each case, the principal amount of such Indebtedness,
     together with the principal amount of any other such Indebtedness, the
     maturity of which has been so accelerated, aggregates $25.0 million or
     more;

          (f) the Company or any of its Restricted Subsidiaries is subject to a
     final judgments aggregating in excess of $25.0 million, which judgments are
     not paid, discharged or stayed for a period of 60 days;

          (g) the Company or any of its Significant Subsidiaries or any group of
     Subsidiaries that, taken as a whole, would constitute a Significant
     Subsidiary pursuant to or within the meaning of Bankruptcy Law:

               (i) commences a voluntary case,

               (ii) consents to the entry of an order for relief against it in
          an involuntary case,

               (iii) consents to the appointment of a custodian of it or for all
          or substantially all of its property,

               (iv) makes a general assignment for the benefit of its creditors,
          or

               (v) generally is not paying its debts as they become due;

          (h) a court of competent jurisdiction enters an order or decree under
     any Bankruptcy Law that:

               (i) is for relief against the Company or any of its Significant
          Subsidiaries or any group of Subsidiaries that, taken as a whole,
          would constitute a Significant Subsidiary in an involuntary case;

               (ii) appoints a custodian of the Company or any of its
          Significant Subsidiaries or any group of Subsidiaries that, taken as a
          whole, would constitute a Significant Subsidiary or for all or
          substantially all of the property of the Company or any of its
          Significant Subsidiaries or any group of Subsidiaries that, taken as a
          whole, would constitute a Significant Subsidiary; or

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<PAGE>

               (iii) orders the liquidation of the Company or any of its
          Significant Subsidiaries or any group of Subsidiaries that, taken as a
          whole, would constitute a Significant Subsidiary;

          and the order or decree remains unstayed and in effect for 60
          consecutive days; or

               (i) except as permitted herein, any Subsidiary Guarantee shall be
          held in any judicial proceeding to be unenforceable or invalid.

                  The Holders of a majority in aggregate principal amount of the
Notes then outstanding by notice to the Trustee may on behalf of the Holders of
all of the Notes waive any existing Default or Event of Default and its
consequences under this Indenture except a continuing Default or Event of
Default in the payment of interest on, or the principal of, the Notes.

Section 6.02      Acceleration.

                  If any Event of Default occurs and is continuing, the Trustee
or the Holders of at least 25% in principal amount of the then outstanding Notes
may declare all the Notes to be due and payable immediately; provided, however,
that so long as any Designated Senior Debt is outstanding, such declaration
shall not become effective until the earlier of (i) the day which is five
Business Days after receipt by the Representatives of Designated Senior Debt of
such notice of acceleration or (ii) the date of acceleration of any Designated
Senior Debt. Notwithstanding the foregoing, in the case of an Event of Default
arising from certain events of bankruptcy or insolvency, with respect to the
Company or any Significant Subsidiary or any group of Subsidiaries that, taken
as a whole, would constitute a Significant Subsidiary, all outstanding Notes
will become due and payable without further action or notice. Holders of the
Notes may not enforce this Indenture or the Notes except as provided in this
Indenture. Subject to certain limitations, Holders of a majority in principal
amount of the then outstanding Notes may direct the Trustee in its exercise of
any trust or power. The Trustee may withhold from Holders of the Notes notice of
any continuing Default or Event of Default (except a Default or Event of Default
relating to the payment of principal or interest) if it determines that
withholding notice is in their interest.

                  In the case of any Event of Default occurring by reason of any
willful action (or inaction) taken (or not taken) by or on behalf of the Company
with the intention of avoiding payment of the premium that the Company would
have had to pay if the Company then had elected to redeem the Notes pursuant to
the optional redemption provisions of this Indenture, an equivalent premium
shall also become and be immediately due and payable to the extent permitted by
law upon the acceleration of the Notes. If an Event of Default occurs prior to
July 15, 2008 by reason of any willful action (or inaction) taken (or not taken)
by or on behalf of the Company with the intention of avoiding the prohibition on
redemption of the Notes prior to July 15, 2008 then the premium specified below
(expressed as a percentage of the principal amount of the Notes on the date of
payment that would otherwise be due but for the provisions of this sentence)
shall also become immediately due and payable to the extent permitted by law
upon the acceleration of the Notes during the twelve-month period ending on July
15 of the years indicated below:

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<PAGE>

                  Year                                              Percentage
                  ----                                              ----------
                  2003.................................................6.125%
                  2004.................................................5.513%
                  2005.................................................4.900%
                  2006.................................................4.288%
                  2007.................................................3.675%
                  2008.................................................3.063%

Section 6.03      Other Remedies.

                  If an Event of Default occurs and is continuing, the Trustee
may pursue any available remedy to collect the payment of principal, premium, if
any, and interest on the Notes or to enforce the performance of any provision of
the Notes or this Indenture.

                  The Trustee may maintain a proceeding even if it does not
possess any of the Notes or does not produce any of them in the proceeding. A
delay or omission by the Trustee or any Holder of a Note in exercising any right
or remedy accruing upon an Event of Default shall not impair the right or remedy
or constitute a waiver of or acquiescence in the Event of Default. All remedies
are cumulative to the extent permitted by law.

Section 6.04      Waiver of Past Defaults.

                  Holders of not less than a majority in aggregate principal
amount of the then outstanding Notes by notice to the Trustee may on behalf of
the Holders of all of the Notes waive an existing Default or Event of Default
and its consequences hereunder, except a continuing Default or Event of Default
in the payment of the principal of, premium or Additional Amounts, if any, or
interest on, the Notes including in connection with an offer to purchase;
provided, however, that the Holders of a majority in aggregate principal amount
at maturity of the then outstanding Notes may rescind an acceleration and its
consequences, including any related payment default that resulted from such
acceleration. Upon any such waiver, such Default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured for every
purpose of this Indenture; but no such waiver shall extend to any subsequent or
other Default or impair any right consequent thereon.

Section 6.05      Control By Majority.

                  Holders of a majority in principal amount of the then
outstanding Notes may direct the time, method and place of conducting any
proceeding for exercising any remedy available to the Trustee or exercising any
trust or power conferred on it. However, the Trustee may refuse to follow any
direction that conflicts with law or this Indenture or that the Trustee
determines may be unduly prejudicial to the rights of other Holders of Notes or
that may involve the Trustee in personal liability.

Section 6.06      Limitation On Suits.

                  A Holder of a Note may pursue a remedy with respect to this
Indenture or the Notes only if:

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          (a) the Holder of a Note gives to the Trustee written notice of a
     continuing Event of Default;

          (b) the Holders of at least 25% in principal amount of the then
     outstanding Notes make a written request to the Trustee to pursue the
     remedy;

          (c) such Holder of a Note or Holders of Notes offer and, if requested,
     provide to the Trustee indemnity satisfactory to the Trustee against any
     loss, liability or expense;

          (d) the Trustee does not comply with the request within 60 days after
     receipt of the request and the offer and, if requested, the provision of
     indemnity; and

          (e) during such 60-day period the Holders of a majority in principal
     amount of the then outstanding Notes do not give the Trustee a direction
     inconsistent with the request.

A Holder of a Note may not use this Indenture to prejudice the rights of another
Holder of a Note or to obtain a preference or priority over another Holder of a
Note.

Section 6.07      Rights of Holders of Notes to Receive Payment.

                  Notwithstanding any other provision of this Indenture, the
right of any Holder of a Note to receive payment of principal, premium and
Additional Amounts, if any, and interest on the Note, on or after the respective
due dates expressed in the Note (including in connection with an offer to
purchase), or to bring suit for the enforcement of any such payment on or after
such respective dates, shall not be impaired or affected without the consent of
such Holder.

Section 6.08      Collection Suit by Trustee.

                  If an Event of Default specified in Section 6.01(a) or (b)
occurs and is continuing, the Trustee is authorized to recover judgment in its
own name and as trustee of an express trust against the Company for the whole
amount of principal of, premium and Additional Amounts, if any, and interest
remaining unpaid on the Notes and interest on overdue principal and, to the
extent lawful, interest and such further amount as shall be sufficient to cover
the costs and expenses of collection, including the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel.

Section 6.09      Trustee May File Proofs Of Claim.

                  The Trustee is authorized to file such proofs of claim and
other papers or documents as may be necessary or advisable in order to have the
claims of the Trustee (including any claim for the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel) and
the Holders of the Notes allowed in any judicial proceedings relative to the
Company (or any other obligor upon the Notes), its creditors or its property and
shall be entitled and empowered to collect, receive and distribute any money or
other property payable or deliverable on any such claims and any custodian in
any such judicial proceeding is hereby authorized by each Holder to make such
payments to the Trustee, and in the event that the Trustee shall consent to the
making of such payments directly to the Holders, to pay to the

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<PAGE>

Trustee any amount due to it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 7.07 hereof. To the extent that the
payment of any such compensation, expenses, disbursements and advances of the
Trustee, its agents and counsel, and any other amounts due the Trustee under
Section 7.07 hereof out of the estate in any such proceeding, shall be denied
for any reason, payment of the same shall be secured by a Lien on, and shall be
paid out of, any and all distributions, dividends, money, securities and other
properties that the Holders may be entitled to receive in such proceeding
whether in liquidation or under any plan of reorganization or arrangement or
otherwise. Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the Notes or
the rights of any Holder, or to authorize the Trustee to vote in respect of the
claim of any Holder in any such proceeding.

Section 6.10      Priorities.

                  If the Trustee collects any money pursuant to this Article, it
shall pay out the money in the following order:

                  First: to the Trustee, its agents and attorneys for amounts
         due under Section 7.07 hereof, including payment of all compensation,
         expense and liabilities incurred, and all advances made, by the Trustee
         and the costs and expenses of collection;

                  Second: to Holders of Notes for amounts due and unpaid on the
         Notes for principal, premium and Additional Amounts, if any, and
         interest, ratably, without preference or priority of any kind,
         according to the amounts due and payable on the Notes for principal,
         premium and Additional Amounts, if any, and interest, respectively; and

                  Third: to the Company or to such party as a court of competent
         jurisdiction shall direct.

                  The Trustee may fix a record date and payment date for any
payment to Holders of Notes pursuant to this Section 6.10.

Section 6.11      Undertaking for Costs.

                  In any suit for the enforcement of any right or remedy under
this Indenture or in any suit against the Trustee for any action taken or
omitted by it as a Trustee, a court in its discretion may require the filing by
any party litigant in the suit of an undertaking to pay the costs of the suit,
and the court in its discretion may assess reasonable costs, including
reasonable attorneys' fees, against any party litigant in the suit, having due
regard to the merits and good faith of the claims or defenses made by the party
litigant. This Section does not apply to a suit by the Trustee, a suit by a
Holder of a Note pursuant to Section 6.07 hereof, or a suit by Holders of more
than 10% in principal amount of the then outstanding Notes.

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                                   ARTICLE 7.
                                    TRUSTEE

Section 7.01      Duties Of Trustee.

     (a) If an Event of Default has occurred and is continuing, the Trustee
shall exercise such of the rights and powers vested in it by this Indenture, and
use the same degree of care and skill in its exercise, as a prudent person would
exercise or use under the circumstances in the conduct of such person's affairs.

     (b) Except during the continuance of an Event of Default:

          (i) the duties of the Trustee shall be determined solely by the
     express provisions of this Indenture and the Trustee need perform only
     those duties that are specifically set forth in this Indenture and no
     others, and no implied covenants or obligations shall be read into this
     Indenture against the Trustee; and

          (ii) in the absence of bad faith or negligence on its part, the
     Trustee may conclusively rely, as to the truth of the statements and the
     correctness of the opinions expressed therein, upon certificates or
     opinions furnished to the Trustee and conforming to the requirements of
     this Indenture. However, the Trustee shall examine the certificates and
     opinions to determine whether or not they conform to the requirements of
     this Indenture (but need not confirm or investigate the accuracy of
     mathematical calculations or other facts stated therein).

     (c) The Trustee may not be relieved from liabilities for its own negligent
action, its own negligent failure to act, or its own willful misconduct, except
that:

          (i) this paragraph does not limit the effect of paragraph (b) of this
     Section;

          (ii) the Trustee shall not be liable for any error of judgment made in
     good faith by a Responsible Officer, unless it is proved that the Trustee
     was negligent in ascertaining the pertinent facts; and

          (iii) the Trustee shall not be liable with respect to any action it
     takes or omits to take in good faith in accordance with a direction
     received by it pursuant to Section 6.05 hereof.

     (d) Whether or not therein expressly so provided, every provision of this
Indenture that in any way relates to the Trustee is subject to paragraphs (a),
(b), and (c) of this Section.

     (e) No provision of this Indenture shall require the Trustee to expend or
risk its own funds or incur any liability. The Trustee shall be under no
obligation to exercise any of its rights and powers under this Indenture at the
request of any Holders, unless such Holder shall have offered to the Trustee
security and indemnity satisfactory to it against any loss, liability or
expense.

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<PAGE>

     (f) The Trustee shall not be liable for interest on any money received by
it except as the Trustee may agree in writing with the Company. Money held in
trust by the Trustee need not be segregated from other funds except to the
extent required by law.

Section 7.02      Rights Of Trustee.

     (a) The Trustee may conclusively rely upon any document believed by it to
be genuine and to have been signed or presented by the proper Person. The
Trustee need not investigate any fact or matter stated in such document.

     (b) Before the Trustee acts or refrains from acting, it may require an
Officers' Certificate or an Opinion of Counsel or both. The Trustee shall not be
liable for any action it takes or omits to take in good faith in reliance on
such Officers' Certificate or Opinion of Counsel. The Trustee may consult with
counsel and the advice of such counsel or any Opinion of Counsel shall be full
and complete authorization and protection from liability in respect of any
action taken, suffered or omitted by it hereunder in good faith and in reliance
thereon.

     (c) The Trustee may act through its attorneys and agents and shall not be
responsible for the misconduct or negligence of any agent appointed with due
care.

     (d) The Trustee shall not be liable for any action it takes or omits to
take in good faith that it believes to be authorized or within the rights or
powers conferred upon it by this Indenture.

     (e) Unless otherwise specifically provided in this Indenture, any demand,
request, direction or notice from the Company shall be sufficient if signed by
an Officer of the Company.

     (f) The Trustee shall be under no obligation to exercise any of the rights
or powers vested in it by this Indenture at the request or direction of any of
the Holders unless such Holders shall have offered to the Trustee reasonable
security or indemnity against the costs, expenses and liabilities that might be
incurred by it in compliance with such request or direction.

     (g) The Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents or
attorneys and the Trustee shall not be responsible for any misconduct or
negligence on the part of any agent or attorney appointed with due care by it
hereunder.

     (h) The Trustee shall not be deemed to have notice of any Default or Event
of Default unless a Responsible Officer of the Trustee has actual knowledge
thereof or unless written notice of any event which is in fact such a default is
received by the Trustee at the Corporate Trust Office of the Trustee, and such
notice references the Notes and this Indenture.

     (i) Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law. The Trustee shall be
under no liability for interest on any money received by it hereunder except as
otherwise agreed in writing with the Company.

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<PAGE>

     (j) The rights, privileges, protections, immunities and benefits given to
the Trustee, including, without limitation, its right to be indemnified, are
extended to, and shall be enforceable by, the Trustee in each of its capacities
hereunder, and to each agent, custodian and other Person employed to act
hereunder.

     (k) The Trustee may request that the Company deliver an Officers'
Certificate setting forth the names of individuals and/or titles of officers
authorized at such time to take specified actions pursuant to this Indenture,
which Officers' Certificate may be signed by any person authorized to sign an
Officers' Certificate, including any person specified as so authorized in any
such certificate previously delivered send not superseded.

Section 7.03      Individual Rights of Trustee.

                  The Trustee in its individual or any other capacity may become
the owner or pledgee of Notes and may otherwise deal with the Company or any
Affiliate of the Company with the same rights it would have if it were not
Trustee. However, in the event that the Trustee acquires any conflicting
interest it must eliminate such conflict within 90 days, apply to the SEC for
permission to continue as trustee or resign. Any Agent may do the same with like
rights and duties. The Trustee is also subject to Sections 7.10 and 7.11 hereof.

Section 7.04      Trustee's Disclaimers.

                  The Trustee shall not be responsible for and makes no
representation as to the validity or adequacy of this Indenture or the Notes, it
shall not be accountable for the Company's use of the proceeds from the Notes or
any money paid to the Company or upon the Company's direction under any
provision of this Indenture, it shall not be responsible for the use or
application of any money received by any Paying Agent other than the Trustee,
and it shall not be responsible for any statement or recital herein or any
statement in the Notes or any other document in connection with the sale of the
Notes or pursuant to this Indenture other than its certificate of
authentication.

Section 7.05      Notice of Defaults.

                  If a Default or Event of Default occurs and is continuing and
if it is known to the Trustee, the Trustee shall mail to Holders of Notes a
notice of the Default or Event of Default within 90 days after it occurs. Except
in the case of a Default or Event of Default in payment of principal of,
premium, if any, or interest on any Note, the Trustee may withhold the notice if
and so long as a committee of its Responsible Officers in good faith determines
that withholding the notice is in the interests of the Holders of the Notes.

Section 7.06      Reports by Trustee to Holders of the Notes.

                  Within 60 days after each July 15 beginning with the July 15
following the date of this Indenture, and for so long as Notes remain
outstanding, the Trustee shall mail to the Holders of the Notes a brief report
dated as of such reporting date that complies with TIA ss. 313(a) (but if no
event described in TIA ss. 313(a) has occurred within the twelve months
preceding the reporting date, no report need be transmitted). The Trustee also
shall comply with TIA ss. 313(b)(2). The Trustee shall also transmit by mail all
reports as required by TIA ss. 313(c).

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<PAGE>

                  A copy of each report at the time of its mailing to the
Holders of Notes shall be mailed to the Company and filed with the SEC and each
stock exchange on which the Notes are listed in accordance with TIA ss. 313(d).
The Company shall promptly notify the Trustee when the Notes are listed on any
stock exchange.

Section 7.07      Compensation and Indemnity.

                  The Company shall pay to the Trustee from time to time such
compensation as the Company and the Trustee shall from time to time agree in
writing for its acceptance of this Indenture and services hereunder. The
Trustee's compensation shall not be limited by any law on compensation of a
trustee of an express trust. The Company shall reimburse the Trustee promptly
upon request for all reasonable disbursements, advances and expenses incurred or
made by it in addition to the compensation for its services. Such expenses shall
include the reasonable compensation, disbursements and expenses of the Trustee's
agents and counsel.

                  The Company shall indemnify the Trustee or any predecessor
Trustee against any and all losses, liabilities or expenses, including taxes
(except for taxes based upon the income of the Trustee), incurred by it arising
out of or in connection with the acceptance or administration of its duties
under this Indenture, including the costs and expenses of enforcing this
Indenture against the Company (including this Section 7.07) and defending itself
against any claim (whether asserted by the Company or any Holder or any other
person) or liability in connection with the exercise or performance of any of
its powers or duties hereunder, except to the extent any such loss, liability or
expense may be attributable to its negligence or bad faith. The Trustee shall
notify the Company promptly of any claim for which it may seek indemnity.
Failure by the Trustee to so notify the Company shall not relieve the Company of
its obligations hereunder. The Company shall defend the claim and the Trustee
shall cooperate in the defense. The Trustee may have separate counsel and the
Company shall pay the reasonable fees and expenses of such counsel. The Company
need not pay for any settlement made without its consent, which consent shall
not be unreasonably withheld.

                  The obligations of the Company under this Section 7.07 shall
survive the satisfaction and discharge of this Indenture and the resignation or
removal of the Trustee.

                  When the Trustee incurs expenses or renders services after an
Event of Default specified in Section 6.01(g) or (h) hereof occurs, the expenses
and the compensation for the services (including the fees and expenses of its
agents and counsel) are intended to constitute expenses of administration under
any Bankruptcy Law.

                  The Trustee shall comply with the provisions of TIA ss.
313(b)(2) to the extent applicable.

Section 7.08      Replacement of Trustee.

                  A resignation or removal of the Trustee and appointment of a
successor Trustee shall become effective only upon the successor Trustee's
acceptance of appointment as provided in this Section.

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                  The Trustee may resign in writing at any time and be
discharged from the trust hereby created by so notifying the Company. The
Holders of Notes of a majority in principal amount of the then outstanding Notes
may remove the Trustee by so notifying the Trustee and the Company in writing.
The Company may remove the Trustee if:

          (a) the Trustee fails to comply with Section 7.10 hereof;

          (b) the Trustee is adjudged a bankrupt or an insolvent or an order for
     relief is entered with respect to the Trustee under any Bankruptcy Law;

          (c) a custodian or public officer takes charge of the Trustee or its
     property; or

          (d) the Trustee becomes incapable of acting.

                  If the Trustee resigns or is removed or if a vacancy exists in
the office of Trustee for any reason, the Company shall promptly appoint a
successor Trustee. Within one year after the successor Trustee takes office, the
Holders of a majority in principal amount of the then outstanding Notes may
appoint a successor Trustee to replace the successor Trustee appointed by the
Company.

                  If a successor Trustee does not take office within 30 days
after the retiring Trustee resigns or is removed, the retiring Trustee (at the
Company's expense), the Company, or the Holders of Notes of at least 10% in
principal amount of the then outstanding Notes may petition any court of
competent jurisdiction for the appointment of a successor Trustee.

                  If the Trustee, after written request by any Holder of a Note
who has been a Holder of a Note for at least six months, fails to comply with
Section 7.10, such Holder of a Note may petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.

                  A successor Trustee shall deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Thereupon, the
resignation or removal of the retiring Trustee shall become effective, and the
successor Trustee shall have all the rights, powers and duties of the Trustee
under this Indenture. The successor Trustee shall mail a notice of its
succession to Holders of the Notes. The retiring Trustee shall promptly transfer
all property held by it as Trustee to the successor Trustee, provided all sums
owing to the Trustee hereunder have been paid and subject to the Lien provided
for in Section 7.07 hereof. Notwithstanding replacement of the Trustee pursuant
to this Section 7.08, the Company's obligations under Section 7.07 hereof shall
continue for the benefit of the retiring Trustee.

Section 7.09      Successor Trustee by Merger, Etc.

                  If the Trustee consolidates, merges or converts into, or
transfers all or substantially all of its corporate trust business to, another
corporation, the successor corporation without any further act shall be the
successor Trustee.

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<PAGE>

Section 7.10      Eligibility; Disqualification.

                  There shall at all times be a Trustee hereunder that is a
corporation organized and doing business under the laws of the United States of
America or of any state thereof that is authorized under such laws to exercise
corporate trustee power, that is subject to supervision or examination by
federal or state authorities and that has a combined capital and surplus of at
least $50 million as set forth in its most recent published annual report of
condition.

                  This Indenture shall always have a Trustee who satisfies the
requirements of TIA ss. 310(a)(1), (2) and (5). The Trustee is subject to TIA
ss. 310(b).

Section 7.11      Preferential Collection of Claims Against Company.

                  The Trustee is subject to TIA ss. 311(a), excluding any
creditor relationship listed in TIA ss. 311(b). A Trustee who has resigned or
been removed shall be subject to TIA ss. 311(a) to the extent indicated therein.

                                   ARTICLE 8.
                    LEGAL DEFEASANCE AND COVENANT DEFEASANCE

Section 8.01      Option to Effect Legal Defeasance or Covenant Defeasance.

                  The Company may, at the option of its Board of Directors
evidenced by a resolution set forth in an Officers' Certificate, at any time,
elect to have either Section 8.02 or 8.03 hereof be applied to all outstanding
Notes upon compliance with the conditions set forth below in this Article 8.

Section 8.02      Legal Defeasance and Discharge.

                  Upon the Company's exercise under Section 8.01 hereof of the
option applicable to this Section 8.02, the Company shall, subject to the
satisfaction of the conditions set forth in Section 8.04 hereof, be deemed to
have been discharged from its obligations with respect to all outstanding Notes
on the date the conditions set forth below are satisfied (hereinafter, "Legal
Defeasance"). For this purpose, Legal Defeasance means that the Company shall be
deemed to have paid and discharged the entire Indebtedness represented by the
outstanding Notes, which shall thereafter be deemed to be "outstanding" only for
the purposes of Section 8.05 hereof and the other Sections of this Indenture
referred to in (a) and (b) below, and to have satisfied all its other
obligations under such Notes and this Indenture (and the Trustee, on demand of
and at the expense of the Company, shall execute proper instruments
acknowledging the same), except for the following provisions which shall survive
until otherwise terminated or discharged hereunder: (a) the rights of Holders of
outstanding Notes to receive solely from the trust fund described in Section
8.04 hereof, and as more fully set forth in such Section, payments in respect of
the principal of, premium and Additional Amounts, if any, and interest on such
Notes when such payments are due, (b) the Company's obligations with respect to
such Notes under Sections 2.06, 2.07, 2.10 and 4.02 hereof, (c) the rights,
powers, trusts, duties and immunities of the Trustee hereunder and the Company's
obligations in connection therewith and (d) this Article 8. Subject to
compliance with this Article 8, the Company may exercise its option under this
Section 8.02 notwithstanding the prior exercise of its option under Section 8.03
hereof.

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<PAGE>

Section 8.03      Covenant defeasance.

                  Upon the Company's exercise under Section 8.01 hereof of the
option applicable to this Section 8.03, the Company shall, subject to the
satisfaction of the conditions set forth in Section 8.04 hereof, be released
from its obligations under Sections 4.03, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12,
4.13, 4.15 and 4.16 and Article 5 hereof with respect to the outstanding Notes
on and after the date the conditions set forth below are satisfied (hereinafter,
"Covenant Defeasance"), and the Notes shall thereafter be deemed not
"outstanding" for the purposes of any direction, waiver, consent or declaration
or act of Holders (and the consequences of any thereof) in connection with such
covenants, but shall continue to be deemed "outstanding" for all other purposes
hereunder (it being understood that such Notes shall not be deemed outstanding
for accounting purposes). For this purpose, Covenant Defeasance means that, with
respect to the outstanding Notes, the Company may omit to comply with and shall
have no liability in respect of any term, condition or limitation set forth in
any such covenant, whether directly or indirectly, by reason of any reference
elsewhere herein to any such covenant or by reason of any reference in any such
covenant to any other provision herein or in any other document and such
omission to comply shall not constitute a Default or an Event of Default under
Section 6.01 hereof, but, except as specified above, the remainder of this
Indenture and such Notes shall be unaffected thereby. In addition, upon the
Company's exercise under Section 8.01 hereof of the option applicable to this
Section 8.03 hereof, subject to the satisfaction of the conditions set forth in
Section 8.04 hereof, Sections 6.01(d) through 6.01(f) hereof shall not
constitute Events of Default.

Section 8.04      Conditions to Legal or Covenant Defeasance.

                  The following shall be the conditions to the application of
either Section 8.02 or 8.03 hereof to the outstanding Notes:

                  In order to exercise either Legal Defeasance or Covenant
Defeasance:

          (a) the Company must irrevocably deposit with the Trustee, in trust,
     for the benefit of the Holders, cash in United States dollars, non-callable
     Government Securities, or a combination thereof, in such amounts as will be
     sufficient, in the opinion of a nationally recognized firm of independent
     public accountants, to pay the principal of, premium and Additional
     Amounts, if any, and interest on the outstanding Notes on the stated date
     for payment thereof or on the applicable redemption date, as the case may
     be, and the Company must specify whether the Notes are being defeased to
     maturity or to a particular redemption date;

          (b) in the case of an election under Section 8.02 hereof, the Company
     shall have delivered to the Trustee an Opinion of Counsel in the United
     States reasonably acceptable to the Trustee confirming that (A) the Company
     has received from, or there has been published by, the Internal Revenue
     Service a ruling or (B) since the date of this Indenture, there has been a
     change in the applicable federal income tax law, in either case to the
     effect that, and based thereon such Opinion of Counsel shall confirm that,
     the Holders of the outstanding Notes will not recognize income, gain or
     loss for federal income tax purposes as a result of such Legal Defeasance
     and will be subject to federal

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<PAGE>

     income tax on the same amounts, in the same manner and at the same times as
     would have been the case if such Legal Defeasance had not occurred;

          (c) in the case of an election under Section 8.03 hereof, the Company
     shall have delivered to the Trustee an Opinion of Counsel in the United
     States reasonably acceptable to the Trustee confirming that the Holders of
     the outstanding Notes will not recognize income, gain or loss for federal
     income tax purposes as a result of such Covenant Defeasance and will be
     subject to federal income tax on the same amounts, in the same manner and
     at the same times as would have been the case if such Covenant Defeasance
     had not occurred;

          (d) no Default or Event of Default shall have occurred and be
     continuing on the date of such deposit (other than a Default or Event of
     Default resulting from the incurrence of Indebtedness all or a portion of
     the proceeds of which will be used to defease the Notes pursuant to this
     Article 8 concurrently with such incurrence) or insofar as Sections 6.01(g)
     or 6.01(h) hereof is concerned, at any time in the period ending on the
     91st day after the date of deposit;

          (e) such Legal Defeasance or Covenant Defeasance shall not result in a
     breach or violation of, or constitute a default under, any material
     agreement or instrument (other than this Indenture) to which the Company or
     any of its Restricted Subsidiaries is a party or by which the Company or
     any of its Restricted Subsidiaries is bound;

          (f) the Company shall have delivered to the Trustee an opinion of
     counsel to the effect that on the 91st day following the deposit, the trust
     funds will not be subject to the effect of any applicable bankruptcy,
     insolvency, reorganization or similar laws affecting creditors' rights
     generally;

          (g) the Company shall have delivered to the Trustee an Officers'
     Certificate stating that the deposit was not made by the Company with the
     intent of preferring the Holders over any other creditors of the Company or
     with the intent of defeating, hindering, delaying or defrauding any other
     creditors of the Company; and

          (h) the Company shall have delivered to the Trustee an Officers'
     Certificate and an Opinion of Counsel, each stating that all conditions
     precedent provided for or relating to the Legal Defeasance or the Covenant
     Defeasance have been complied with.

Section 8.05      Deposited Money and Government Securities to be held in Trust;
                  Other Miscellaneous Provisions.

                  Subject to Section 8.06 hereof, all money and non-callable
Government Securities (including the proceeds thereof) deposited with the
Trustee (or other qualifying trustee, collectively for purposes of this Section
8.05, the "Trustee") pursuant to Section 8.04 hereof in respect of the
outstanding Notes shall be held in trust and applied by the Trustee, in
accordance with the provisions of such Notes and this Indenture, to the payment,
either directly or through any Paying Agent (including the Company acting as
Paying Agent) as the Trustee may determine, to the Holders of such Notes of all
sums due and to become due thereon in respect of

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<PAGE>

principal, premium and Additional Amounts, if any, and interest, but such money
need not be segregated from other funds except to the extent required by law.

                  The Company shall pay and indemnify the Trustee against any
tax, fee or other charge imposed on or assessed against the cash or non-callable
Government Securities deposited pursuant to Section 8.04 hereof or the principal
and interest received in respect thereof other than any such tax, fee or other
charge which by law is for the account of the Holders of the outstanding Notes.

                  Anything in this Article 8 to the contrary notwithstanding,
the Trustee shall deliver or pay to the Company from time to time upon the
request of the Company any money or non-callable Government Securities held by
it as provided in Section 8.04 hereof which, in the opinion of a nationally
recognized firm of independent public accountants expressed in a written
certification thereof delivered to the Trustee (which may be the opinion
delivered under Section 8.04(a) hereof), are in excess of the amount thereof
that would then be required to be deposited to effect an equivalent Legal
Defeasance or Covenant Defeasance.

Section 8.06      Repayment to Company.

                  Any money deposited with the Trustee or any Paying Agent, or
then held by the Company, in trust for the payment of the principal of, premium
and Additional Amounts, if any, or interest on any Note and remaining unclaimed
for two years after such principal, premium and Additional Amounts, if any, or
interest has become due and payable shall be paid to the Company on its request
or (if then held by the Company) shall be discharged from such trust; and the
Holder of such Note shall thereafter, as a secured creditor, look only to the
Company for payment thereof, and all liability of the Trustee or such Paying
Agent with respect to such trust money, and all liability of the Company as
trustee thereof, shall thereupon cease; provided, however, that the Trustee or
such Paying Agent, before being required to make any such repayment, may at the
expense of the Company cause to be published once, in The New York Times and The
Wall Street Journal (national edition), notice that such money remains unclaimed
and that, after a date specified therein, which shall not be less than 30 days
from the date of such notification or publication, any unclaimed balance of such
money then remaining will be repaid to the Company.

Section 8.07      Reinstatement.

                  If the Trustee or Paying Agent is unable to apply any United
States dollars or non-callable Government Securities in accordance with Section
8.02 or 8.03 hereof, as the case may be, by reason of any order or judgment of
any court or governmental authority enjoining, restraining or otherwise
prohibiting such application, then the Company's obligations under this
Indenture and the Notes shall be revived and reinstated as though no deposit had
occurred pursuant to Section 8.02 or 8.03 hereof until such time as the Trustee
or Paying Agent is permitted to apply all such money in accordance with Section
8.02 or 8.03 hereof, as the case may be; provided, however, that, if the Company
makes any payment of principal of, premium, if any, or interest on any Note
following the reinstatement of its obligations, the Company shall be subrogated
to the rights of the Holders of such Notes to receive such payment from the
money held by the Trustee or Paying Agent.

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<PAGE>

                                   ARTICLE 9.
                        AMENDMENT, SUPPLEMENT AND WAIVER

Section 9.01      Without Consent of Holders of Notes.

                  Notwithstanding Section 9.02 of this Indenture, the Company
and the Trustee may amend or supplement this Indenture or the Notes without the
consent of any Holder of a Note:

          (a) to cure any ambiguity, defect or inconsistency;

          (b) to provide for uncertificated Notes in addition to or in place of
     certificated Notes;

          (c) to provide for the assumption of the Company's obligations to the
     Holders of the Notes in the case of a merger or consolidation pursuant to
     Article 5 hereof;

          (d) to make any change that would provide any additional rights or
     benefits to the Holders of the Notes or that does not adversely affect the
     legal rights hereunder of any Holder of the Note; or

          (e) to comply with requirements of the SEC in order to effect or
     maintain the qualification of this Indenture under the TIA.

                  Upon the request of the Company accompanied by a resolution of
its Board of Directors authorizing the execution of any such amended or
supplemental Indenture, and upon receipt by the Trustee of the documents
described in Section 7.02 hereof, the Trustee shall join with the Company in the
execution of any amended or supplemental Indenture authorized or permitted by
the terms of this Indenture and to make any further appropriate agreements and
stipulations that may be therein contained, but the Trustee shall not be
obligated to enter into such amended or supplemental Indenture that affects its
own rights, duties or immunities under this Indenture or otherwise.

Section 9.02      With Consent of Holders of Notes.

                  Except as provided below in this Section 9.02, the Company and
the Trustee may amend or supplement this Indenture (including Section 3.09, 4.10
and 4.15 hereof) and the Notes may be amended or supplemented with the consent
of the Holders of at least a majority in principal amount of the Notes then
outstanding (including consents obtained in connection with a tender offer or
exchange offer for the Notes), and, subject to Sections 6.04 and 6.07 hereof,
any existing Default or Event of Default (other than a Default or Event of
Default in the payment of the principal of, premium, if any, or interest on the
Notes, except a payment default resulting from an acceleration that has been
rescinded) or compliance with any provision of this Indenture or the Notes may
be waived with the consent of the Holders of a majority in principal amount of
the then outstanding Notes (including consents obtained in connection with a
tender offer or exchange offer for the Notes).

                                       72
<PAGE>

                  Upon the request of the Company accompanied by a resolution of
its Board of Directors authorizing the execution of any such amended or
supplemental Indenture, and upon the filing with the Trustee of evidence
satisfactory to the Trustee of the consent of the Holders of Notes as aforesaid,
and upon receipt by the Trustee of the documents described in Section 7.02
hereof, the Trustee shall join with the Company in the execution of such amended
or supplemental Indenture unless such amended or supplemental Indenture affects
the Trustee's own rights, duties or immunities under this Indenture or
otherwise, in which case the Trustee may in its discretion, but shall not be
obligated to, enter into such amended or supplemental Indenture.

                  The Company may, but shall not be obligated to, fix a record
date for the purpose of determining the Persons entitled to consent to any
indenture supplemental hereto. If a record date is fixed, the Holders on such
record date, or their duly designated proxies, and only such Persons, shall be
entitled to consent to such supplemental indenture, whether or not such Holders
remain Holders after such record date; provided, that unless such consent shall
have become effective by virtue of the requisite percentage having been obtained
prior to the date which is 180 days after such record date, any such consent
previously given shall automatically and without further action by any Holder be
canceled and of no further effect.

                  It shall not be necessary for the consent of the Holders of
Notes under this Section 9.02 to approve the particular form of any proposed
amendment or waiver, but it shall be sufficient if such consent approves the
substance thereof.

                  After an amendment, supplement or waiver under this Section
becomes effective, the Company shall mail to the Holders of Notes affected
thereby a notice briefly describing the amendment, supplement or waiver. Any
failure of the Company to mail such notice, or any defect therein, shall not,
however, in any way impair or affect the validity of any such amended or
supplemental Indenture or waiver. Subject to Sections 6.04 and 6.07 hereof, the
Holders of a majority in aggregate principal amount of the Notes then
outstanding may waive compliance in a particular instance by the Company with
any provision of this Indenture or the Notes. However, without the consent of
each Holder affected, an amendment or waiver may not (with respect to any Notes
held by a non-consenting Holder):

          (a) reduce the principal amount of Notes whose Holders must consent to
     an amendment, supplement or waiver;

          (b) reduce the principal of or change the fixed maturity of any Note
     or alter or waive any of the provisions with respect to the redemption of
     the Notes except as provided above with respect to Sections 4.10 and 4.15
     hereof;

          (c) reduce the rate of or change the time for payment of interest,
     including default interest, on any Note;

          (d) waive a Default or Event of Default in the payment of principal
     of, or premium and Additional Amounts, if any, or interest on the Notes
     (except a rescission of acceleration of the Notes by the Holders of at
     least a majority in aggregate principal

                                       73
<PAGE>

     amount of the then outstanding Notes and a waiver of the payment default
     that resulted from such acceleration);

          (e) make any Note payable in money other than that stated in the
     Notes;

          (f) make any change in the provisions of this Indenture relating to
     waivers of past Defaults or the rights of Holders of Notes to receive
     payments of principal of or premium and Additional Amounts, if any, or
     interest on the Notes;

          (g) waive a redemption payment with respect to any Note (other than a
     payment required by Sections 3.09, 4.10 and 4.15 hereof); or

          (h) make any change in Section 6.04 or 6.07 hereof or in the foregoing
     amendment and waiver provisions.

Section 9.03      Compliance with Trust Indenture Act.

                  Every amendment or supplement to this Indenture or the Notes
shall be set forth in a amended or supplemental Indenture that complies with the
TIA as then in effect.

Section 9.04      Revocation and Effect of Consents.

                  Until an amendment, supplement or waiver becomes effective, a
consent to it by a Holder of a Note is a continuing consent by the Holder of a
Note and every subsequent Holder of a Note or portion of a Note that evidences
the same debt as the consenting Holder's Note, even if notation of the consent
is not made on any Note. However, any such Holder of a Note or subsequent Holder
of a Note may revoke the consent as to its Note if the Trustee receives written
notice of revocation before the date the waiver, supplement or amendment becomes
effective. An amendment, supplement or waiver becomes effective in accordance
with its terms and thereafter binds every Holder.

Section 9.05      Notation on or Exchange of Notes.

                  The Trustee may place an appropriate notation about an
amendment, supplement or waiver on any Note thereafter authenticated. The
Company in exchange for all Notes may issue and the Trustee shall authenticate
new Notes that reflect the amendment, supplement or waiver.

                  Failure to make the appropriate notation or issue a new Note
shall not affect the validity and effect of such amendment, supplement or
waiver.

Section 9.06      Trustee to Sign Amendments, Etc.

                  The Trustee shall sign any amended or supplemental Indenture
authorized pursuant to this Article 9 if the amendment or supplement does not
adversely affect the rights, duties, liabilities or immunities of the Trustee.
The Company may not sign an amendment or supplemental indenture until the Board
of Directors approves it. In executing any amended or supplemental indenture,
the Trustee shall be entitled to receive and (subject to Section 7.01) shall

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<PAGE>

be fully protected in relying upon, an Officers' Certificate and an Opinion of
Counsel stating that the execution of such amended or supplemental indenture is
authorized or permitted by this Indenture.

                                  ARTICLE 10.
                              SUBSIDIARY GUARANTEES

Section 10.01     Agreement to Guarantee.

                  Each of the Guarantors hereby agrees as follows:

     (a) Such Guarantor, jointly and severally with all other Guarantors,
unconditionally guarantees to each Holder of a Note authenticated and delivered
by the Trustee and to the Trustee its successors and assigns, regardless of the
validity and enforceability of this Indenture, the Notes or the Obligations of
the Company under this Indenture or the Notes, that:

          (i) the principal of, premium, interest and Additional Amounts, if
     any, on the Notes will be promptly paid in full when due, whether at
     maturity, by acceleration, redemption or otherwise, and interest on the
     overdue principal of, premium, interest and Additional Amounts, if any, on
     the Notes, to the extent lawful, and all other Obligations of the Company
     to the Holders or the Trustee thereunder or under this Indenture will be
     promptly paid in full, all in accordance with the terms thereof; and

          (ii) in case of any extension of time for payment or renewal of any
     Notes or any of such other Obligations, that the same will be promptly paid
     in full when due in accordance with the terms of the extension or renewal,
     whether at stated maturity, by acceleration or otherwise.

     (b) Notwithstanding the foregoing, in the event that this Guarantee would
constitute or result in a violation of any applicable fraudulent conveyance or
similar law of any relevant jurisdiction, the liability of the Guarantors under
this Indenture shall be reduced to the maximum amount permissible under such
fraudulent conveyance or similar law.

Section 10.02     Execution and Delivery of Subsidiary Guarantees.

     (a) To evidence its Subsidiary Guarantees set forth in this Indenture, each
Guarantor hereby agrees that a notation of such Guarantee substantially in the
form attached as Exhibit F to this Indenture shall be endorsed by an Officer of
such Guarantor on each Note authenticated and delivered by the Trustee on or
after the date hereof.

     (b) Notwithstanding the foregoing, each Guarantor hereby agrees that its
Guarantee set forth herein shall remain in full force and effect notwithstanding
any failure to endorse on each Note a notation of such Guarantee.

     (c) If an Officer whose signature is on this Indenture no longer holds that
office at the time the Trustee authenticates the Note on which a Guarantee is
endorsed, the Guarantee shall be valid nevertheless.

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<PAGE>

     (d) The delivery of any Note by the Trustee, after the authentication
thereof under this Indenture, shall constitute due delivery of the Guarantee set
forth in this Indenture on behalf of each Guarantor.

     (e) Each Guarantor hereby agrees that its obligations hereunder shall be
unconditional, regardless of the validity, regularity or enforceability of the
Notes or this Indenture, the absence of any action to enforce the same, any
waiver or consent by any Holder of the Notes with respect to any provisions
hereof or thereof, the recovery of any judgment against the Company, any action
to enforce the same or any other circumstance which might otherwise constitute a
legal or equitable discharge or defense of a guarantor.

     (f) Each Guarantor hereby waives diligence, presentment, demand of payment,
filing of claims with a court in the event of insolvency or bankruptcy of the
Company, any right to require a proceeding first against the Company, protest,
notice and all demands whatsoever and covenants that its Guarantee made pursuant
to this Indenture will not be discharged except by complete performance of the
obligations contained in the Notes and this Indenture.

     (g) If any Holder or the Trustee is required by any court or otherwise to
return to the Company or any Guarantor, or any custodian, Trustee, liquidator or
other similar official acting in relation to either the Company or such
Guarantor, any amount paid by either to the Trustee or such Holder, the
Guarantee made pursuant to this Indenture, to the extent theretofore discharged,
shall be reinstated in full force and effect.

     (h) Each Guarantor agrees that it shall not be entitled to any right of
subrogation in relation to the Holders in respect of any obligations guaranteed
hereby until payment in full of all obligations guaranteed hereby. Each
Guarantor further agrees that, as between such Guarantor, on the one hand, and
the Holders and the Trustee, on the other hand:

          (i) the maturity of the Obligations guaranteed hereby may be
     accelerated as provided in Article 6 of this Indenture for the purposes of
     the Guarantee made pursuant to this Indenture, notwithstanding any stay,
     injunction or other prohibition preventing such acceleration in respect of
     the obligations guaranteed hereby; and

          (ii) in the event of any declaration of acceleration of such
     Obligations as provided in Article 6 of this Indenture, such Obligations
     (whether or not due and payable) shall forthwith become due and payable by
     such Guarantor for the purpose of the Guarantee made pursuant to this
     Indenture.

     (i) Each Guarantor shall have the right to seek contribution from any other
non-paying Guarantor so long as the exercise of such right does not impair the
rights of the Holders or the Trustee under the Guarantee made pursuant to this
Indenture.

Section 10.03     Guarantors May Consolidate, Etc. on Certain Terms.

     (a) Except as set forth in Articles 4 and 5 of this Indenture, nothing
contained in this Indenture or in the Notes shall prevent any consolidation or
merger of any Guarantor with or into the Company or any other Guarantor or shall
prevent any transfer, sale or conveyance of

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<PAGE>

the property of any Guarantor as an entirety or substantially as an entirety, to
the Company or any other Guarantor.

     (b) Except as set forth in Articles 4 and 5 of this Indenture, nothing
contained in this Indenture or in the Notes shall prevent any consolidation or
merger of any Guarantor with or into a corporation or corporations other than
the Company or any other Guarantor (in each case, whether or not affiliated with
the Guarantor), or successive consolidations or mergers in which a Guarantor or
its successor or successors shall be a party or parties, or shall prevent any
sale or conveyance of the property of any Guarantor as an entirety or
substantially as an entirety, to a corporation other than the Company or any
other Guarantor (in each case, whether or not affiliated with the Guarantor)
authorized to acquire and operate the same; provided, however, that each
Guarantor hereby covenants and agrees that (i) subject to this Indenture, upon
any such consolidation, merger, sale or conveyance, the due and punctual
performance and observance of all of the covenants and conditions of this
Indenture to be performed by such Guarantor, shall be expressly assumed (in the
event that such Guarantor is not the surviving corporation in the merger), by
supplemental indenture satisfactory in form to the Trustee, executed and
delivered to the Trustee, by the corporation formed by such consolidation, or
into which such Guarantor shall have been merged, or by the corporation which
shall have acquired such property and (ii) immediately after giving effect to
such consolidation, merger, sale or conveyance no Default or Event of Default
exists.

     (c) In case of any such consolidation, merger, sale or conveyance and upon
the assumption by the successor corporation, by supplemental indenture, executed
and delivered to the Trustee and satisfactory in form to the Trustee, of the
Guarantee made pursuant to this Indenture and the due and punctual performance
of all of the covenants and conditions of this Indenture to be performed by such
Guarantor, such successor corporation shall succeed to and be substituted for
such Guarantor with the same effect as if it had been named herein as one of the
Guarantors. Such successor corporation thereupon may cause to be signed any or
all of the Guarantees to be endorsed upon the Notes issuable under this
Indenture which theretofore shall not have been signed by the Company and
delivered to the Trustee. All the Guarantees so issued shall in all respects
have the same legal rank and benefit under this Indenture as the Guarantees
theretofore and thereafter issued in accordance with the terms of this Indenture
as though all of such Guarantees had been issued at the date of the execution
hereof.

Section 10.04     Releases.

     (a) Concurrently with any sale of assets (including, if applicable, all of
the Capital Stock of a Guarantor), all Liens, if any, in favor of the Trustee in
the assets sold thereby shall be released; provided that in the event of an
Asset Sale, the Net Proceeds from such sale or other disposition are treated in
accordance with the provisions of Section 4.10 of this Indenture. If the assets
sold in such sale or other disposition include all or substantially all of the
assets of a Guarantor or all of the Capital Stock of a Guarantor, then the
Guarantor (in the event of a sale or other disposition of all of the Capital
Stock of such Guarantor) or the Person acquiring the property (in the event of a
sale or other disposition of all or substantially all of the assets of such
Guarantor) shall be released from and relieved of its obligations under this
Indenture and its Guarantee made pursuant hereto; provided that in the event of
an Asset Sale, the Net Proceeds from such sale or other disposition are treated
in accordance with the provisions of Section 4.10

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<PAGE>

of this Indenture. Upon delivery by the Company to the Trustee of an Officers'
Certificate to the effect that such sale or other disposition was made by the
Company or the Guarantor, as the case may be, in accordance with the provisions
of this Indenture, including, without limitation, Section 4.10 of this
Indenture, the Trustee shall execute any documents reasonably required in order
to evidence the release of the Guarantor from its obligations under this
Indenture and its Guarantee made pursuant hereto. If the Guarantor is not
released from its obligations under its Guarantee, it shall remain liable for
the full amount of principal of and interest and Additional Amounts, if any, on
the Notes and for the other obligations of such Guarantor under this Indenture.

     (b) Upon the designation of a Guarantors as an Unrestricted Subsidiary in
accordance with the terms of this Indenture, such Guarantor shall be released
and relieved of its obligations under this Indenture. Upon delivery by the
Company to the Trustee of an Officers' Certificate and an Opinion of Counsel to
the effect that such designation of such Guarantor as an Unrestricted Subsidiary
was made by the Company in accordance with the provisions of this Indenture,
including without limitation Section 4.07 hereof, the Trustee shall execute any
documents reasonably required in order to evidence the release of such Guarantor
from its obligations under its Guarantee. Any Guarantor not released from its
obligations under its Guarantee shall remain liable for the full amount of
principal of and interest on the Notes and for the other obligations of any
Guarantor under this Indenture as provided in this Article 10.

     (c) Each Guarantor shall be released and relieved of its obligations under
this Indenture in accordance with, and subject to, Section 4.18 hereof.

Section 10.05     No Recourse Against Others.

                  No past, present or future director, officer, employee,
incorporator, stockholder or agent of any Subsidiary of the Company, as such,
shall have any liability for any obligations of the Company or any Subsidiary of
the Company under the Notes, any Guarantees, this Indenture or for any claim
based on, in respect of, or by reason of, such obligations or their creation.
Each Holder of the Notes by accepting a Note waives and releases all such
liability. The waiver and release are part of the consideration for issuance of
the Notes. Such waiver may not be effective to waive liabilities under the
federal securities laws and it is the view of the Securities and Exchange
Commission that such a waiver is against public policy.

Section 10.06     Subordination of Subsidiary Guarantees

                  The Guarantee of each Guarantor shall be subordinated to the
prior payment in full of all Senior Debt of that Guarantor (in the same manner
and to the same extent that the Notes are subordinated to Senior Debt), which
shall include all guarantees of Senior Debt.

                                  ARTICLE 11.
                                  SUBORDINATION

Section 11.01     Agreement to Subordinate.

                  The Company agrees, and each Holder by accepting a Note
agrees, that the Indebtedness evidenced by the Notes is subordinated in right of
payment, to the extent and in the

                                       78
<PAGE>

manner provided in this Article 11, to the prior payment in full in cash of all
Senior Debt (whether outstanding on the date hereof or hereafter created,
incurred, assumed or guaranteed), and that the subordination is for the benefit
of the holders of Senior Debt.

Section 11.02     Liquidation; Dissolution; Bankruptcy.

                  Upon any distribution to creditors of the Company in a
liquidation or dissolution of the Company, in a bankruptcy, reorganization,
insolvency, receivership or similar proceeding relating to the Company or its
property, in an assignment for the benefit of creditors or in any marshalling of
the Company's assets and liabilities, the holders of Senior Debt shall 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 Notes will be
entitled to receive any payment with respect to the Notes, and until all
Obligations with respect to Senior Debt are paid in full in cash, any
distribution to which the Holders of Notes would be entitled shall be made to
the holders of Senior Debt (except, in each case, that Holders of Notes may
receive Permitted Junior Securities and payments made from the trust described
under Article 8).

Section 11.03     Default on Designated Senior Debt.

                  The Company may not make any payment or distribution to the
Trustee or any Holder in respect of Obligations with respect to the Notes and
may not acquire from the Trustee or any Holder any Notes for cash or property
(other than (i) securities that are subordinated to at least the same extent as
the Notes to (a) Senior Debt and (b) any securities issued in exchange for
Senior Debt and (ii) payments and other distributions made from any defeasance
trust created pursuant to Section 8.01 hereof) until all principal and other
Obligations with respect to the Senior Debt have been paid in full if:

          (i) a default in the payment of any principal or other Obligations
     with respect to Designated Senior Debt occurs and is continuing; or

                                       79
<PAGE>

          (ii) a default, other than a payment default, on Designated Senior
     Debt occurs and is continuing that then 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 the
     default (a "Payment Blockage Notice") from the Company or a Representative
     with respect to such Designated Senior Debt. If the Trustee receives any
     such Payment Blockage Notice, no subsequent Payment Blockage Notice shall
     be effective for purposes of this Section unless and until (i) at least 360
     days shall have elapsed since the effectiveness of the immediately prior
     Payment Blockage Notice and (ii) all scheduled payments of principal,
     premium and Additional Amounts, if any, and interest on the Notes 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 or cured for a
     period of not less than 90 days.

                  The Company may and shall resume payments on and distributions
in respect of the Notes and may acquire them upon the earlier of:

          (i) the date upon which the default is cured or waived, or

          (ii) in the case of a default referred to in Section 11.03(ii) hereof,
     179 days pass after the date on which the applicable Payment Blockage
     Notice is received if the maturity of such Designated Senior Debt has not
     been accelerated,

if this Article otherwise permits the payment, distribution or acquisition at
the time of such payment or acquisition.

Section 11.04     Acceleration of Securities.

                  If payment of the Securities is accelerated because of an
Event of Default, the Company shall promptly notify holders of Senior Debt of
the acceleration.

Section 11.05     When Distribution Must Be Paid Over.

                  In the event that the Trustee or any Holder receives any
payment of any Obligations with respect to the Notes at a time when the Trustee
or such Holder, as applicable, has actual knowledge that such payment is
prohibited by Article 11 hereof, such payment shall be held by the Trustee or
such Holder, in trust for the benefit of, and shall be paid forthwith over and
delivered, upon written request, to, the holders of Senior Debt as their
interests may appear or their Representative under the indenture or other
agreement (if any) pursuant to which Senior Debt may have been issued, as their
respective interests may appear, for application to the payment of all
Obligations with respect to Senior Debt remaining unpaid to the extent necessary
to pay such Obligations in full in accordance with their terms, after giving
effect to any concurrent payment or distribution to or for the holders of Senior
Debt.

                  With respect to the holders of Senior Debt, the Trustee
undertakes to perform only such obligations on the part of the Trustee as are
specifically set forth in this Article 11, and no

                                       80
<PAGE>

implied covenants or obligations with respect to the holders of Senior Debt
shall be read into this Indenture against the Trustee. The Trustee shall not be
deemed to owe any fiduciary duty to the holders of Senior Debt, and shall not be
liable to any such holders if the Trustee shall pay over or distribute to or on
behalf of Holders or the Company or any other Person money or assets to which
any holders of Senior Debt shall be entitled by virtue of this Article 11,
except if such payment is made as a result of the willful misconduct or
negligence of the Trustee.

Section 11.06     Notice by Company

                  The Company shall promptly notify the Trustee and the Paying
Agent of any facts known to the Company that would cause a payment of any
Obligations with respect to the Notes to violate this Article 11, but failure to
give such notice shall not affect the subordination of the Notes to the Senior
Debt as provided in this Article 11.

                  The Trustee shall be entitled to rely on the delivery to it of
a written notice by a person representing himself to be a holder of Senior Debt
(or a trustee or agent on behalf of such holder) to establish that such notice
has been given by a holder of Senior Debt (or a trustee or agent on behalf of
any such holder). In the event that the Trustee determines in good faith that
further evidence is required with respect to the right of any person as holder
of Senior Debt to participate in any payment or distribution pursuant to this
Article 11, the Trustee may request such person to furnish evidence to the
reasonable satisfaction of the Trustee as to the amount of Senior Debt held by
such person, the extent to which such person is entitled to participate in such
evidence is not furnish, the Trustee may defer any payment which it may be
required to make for the benefit of such person pursuant to the terms of this
Indenture pending judicial determination as to the rights of such person to
receive such payment.

Section 11.07     Subrogation.

                  After all Senior Debt is paid in full in cash and until the
Notes are paid in full, Holders of Notes shall be subrogated (equally and
ratably with all other Indebtedness pari passu with the Notes) to the rights of
holders of Senior Debt to receive distributions applicable to Senior Debt to the
extent that distributions otherwise payable to the Holders of Notes have been
applied to the payment of Senior Debt. A distribution made under this Article 11
to holders of Senior Debt that otherwise would have been made to Holders of
Notes is not, as between the Company and Holders, a payment by the Company on
the Notes.

Section 11.08     Relative Rights.

                  This Article 11 defines the relative rights of Holders of
Notes and holders of Senior Debt. Nothing in this Indenture shall:

          (i) impair, as between the Company and Holders of Notes, the
     obligation of the Company, which is absolute and unconditional, to pay
     principal of and interest on the Notes in accordance with their terms;

          (ii) affect the relative rights of Holders of Notes and creditors of
     the Company other than their rights in relation to holders of Senior Debt;
     or

                                       81
<PAGE>

          (iii) prevent the Trustee or any Holder of Notes from exercising its
     available remedies upon a Default or Event of Default, subject to the
     rights of holders and owners of Senior Debt to receive distributions and
     payments otherwise payable to Holders of Notes.

                  If the Company fails because of this Article 11 to pay
principal of or interest on a Note on the due date, the failure is still a
Default or Event of Default.

Section 11.09     Subordination May Not Be Impaired by Company.

                  No right of any holder of Senior Debt to enforce the
subordination of the Indebtedness evidenced by the Notes shall be impaired by
any act or failure to act by the Company or any Holder or by the failure of the
Company or any Holder to comply with this Indenture.

Section 11.10     Distribution or Notice to Representative.

                  Whenever a distribution is to be made or a notice given to
holders of Senior Debt, the distribution may be made and the notice given to
their Representative.

                  Upon any payment or distribution of assets of the Company
referred to in this Article 11, the Trustee and the Holders of Notes shall be
entitled to rely upon any order or decree made by any court of competent
jurisdiction or upon any certificate of such Representative or of the
liquidating trustee or agent or other Person making any distribution to the
Trustee or to the Holders of Notes for the purpose of ascertaining the Persons
entitled to participate in such distribution, the holders of the Senior Debt and
other Indebtedness of the Company, the amount thereof or payable thereon, the
amount or amounts paid or distributed thereon and all other facts pertinent
thereto or to this Article 11.

Section 11.11     Rights of Trustee and Paying Agent.

                  Notwithstanding the provisions of this Article 11 or any other
provision of this Indenture, the Trustee shall not be charged with knowledge of
the existence of any facts that would prohibit the making of any payment or
distribution by the Trustee, and the Trustee and the Paying Agent may continue
to make payments on the Notes, unless the Trustee shall have received at its
Corporate Trust Office at least three Business Days prior to the date of such
payment written notice of facts that would cause the payment of any Obligations
with respect to the Notes to violate this Article 11. Only the Company or a
Representative may give the notice. Nothing in this Article 11 shall impair the
claims of, or payments to, the Trustee under or pursuant to Section 7.07 hereof.

                  The Trustee in its individual or any other capacity may hold
Senior Debt with the same rights it would have if it were not Trustee. Any Agent
may do the same with like rights.

Section 11.12     Authorization to Effect Subordination.

                  Each Holder of Notes, by the Holder's acceptance thereof,
authorizes and directs the Trustee on such Holder's behalf to take such action
as may be necessary or appropriate to

                                       82
<PAGE>

effectuate the subordination as provided in this Article 11, and appoints the
Trustee to act as such Holder's attorney-in-fact for any and all such purposes.
If the Trustee does not file a proper proof of claim or proof of debt in the
form required in any proceeding referred to in Section 6.09 hereof at least 30
days before the expiration of the time to file such claim, the credit agents are
hereby authorized to file an appropriate claim for and on behalf of the Holders
of the Notes.

Section 11.13     Amendments.

                  The provisions of this Article 11 shall not be amended or
modified without the written consent of the holders of at least 75% in aggregate
principal amount of the Notes then outstanding if such amendment would adversely
affect the rights of Holders of Notes.

                                  ARTICLE 12.
                                  MISCELLANEOUS

Section 12.01     Trust Indenture Act Controls.

                  If any provision of this Indenture limits, qualifies or
conflicts with the duties imposed by TIA ss. 318(c), the imposed duties shall
control.

Section 12.02     Notices.

                  Any notice or communication by the Company or the Trustee to
the others is duly given if in writing and delivered in Person or mailed by
first class mail (registered or certified, return receipt requested), telecopier
or overnight air courier guaranteeing next day delivery, to the others' address:

                  If to the Company or any Guarantor:

                  L-3 Communications Corporation
                  600 Third Avenue, 34th Floor,
                  New York, New York  10016
                  Attention:  Senior Vice President-Finance (Fax: 212-805-5440)

                  With a copy to:

                  Simpson Thacher & Bartlett
                  425 Lexington Avenue
                  New York, New York  10017
                  Attention:  Vincent Pagano, Jr. (Fax: 212-455-2502)

                  If to the Trustee:

                  The Bank of New York
                  101 Barclay Street
                  New York, New York  10286
                  Attention:  Corporate Trust Administration (Fax: 212-815-5704)

                                       83
<PAGE>

                  The Company or the Trustee, by notice to the others may
designate additional or different addresses for subsequent notices or
communications.

                  All notices and communications (other than those sent to
Holders) shall be deemed to have been duly given, at the time delivered by hand,
if personally delivered; five Business Days after being deposited in the mail,
postage prepaid, if mailed; when receipt acknowledged, if telecopied; and the
next Business Day after timely delivery to the courier, if sent by overnight air
courier guaranteeing next day delivery.

                  Any notice or communication to a Holder shall be mailed by
first class mail, certified or registered, return receipt requested, or by
overnight air courier guaranteeing next day delivery to its address shown on the
register kept by the Registrar. Any notice or communication shall also be so
mailed to any Person described in TIA ss. 313(c), to the extent required by the
TIA. Failure to mail a notice or communication to a Holder or any defect in it
shall not affect its sufficiency with respect to other Holders.

                  If a notice or communication is mailed in the manner provided
above within the time prescribed, it is duly given, whether or not the addressee
receives it.

                  If the Company mails a notice or communication to Holders, it
shall mail a copy to the Trustee and each Agent at the same time.

Section 12.03     Communications By Holders of Notes with Other Holders of
Notes.

                  Holders may communicate pursuant to TIA ss. 312(b) with other
Holders with respect to their rights under this Indenture or the Notes. The
Company, the Trustee, the Registrar and anyone else shall have the protection of
TIA ss. 312(c).

Section 12.04     Certificate and Opinion as to Conditions Precedent.

                  Upon any request or application by the Company to the Trustee
to take any action under this Indenture, the Company shall furnish to the
Trustee:

          (a) an Officers' Certificate in form and substance reasonably
     satisfactory to the Trustee (which shall include the statements set forth
     in Section 12.05 hereof) stating that, in the opinion of the signers, all
     conditions precedent and covenants, if any, provided for in this Indenture
     relating to the proposed action have been satisfied; and

          (b) an Opinion of Counsel in form and substance reasonably
     satisfactory to the Trustee (which shall include the statements set forth
     in Section 12.05 hereof) stating that, in the opinion of such counsel, all
     such conditions precedent and covenants have been satisfied.

Section 12.05     Statements required in Certificate or Opinion.

                  Each certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than a certificate
provided pursuant to TIA ss. 314(a)(4)) shall comply with the provisions of TIA
ss. 314(e) and shall include:

                                       84
<PAGE>

          (a) a statement that the Person making such certificate or opinion has
     read such covenant or condition;

          (b) a brief statement as to the nature and scope of the examination or
     investigation upon which the statements or opinions contained in such
     certificate or opinion are based;

          (c) a statement that, in the opinion of such Person, he or she has
     made such examination or investigation as is necessary to enable him to
     express an informed opinion as to whether or not such covenant or condition
     has been satisfied; and

          (d) a statement as to whether or not, in the opinion of such Person,
     such condition or covenant has been satisfied.

Section 12.06     Rule by Trustee and Agents.

                  The Trustee may make reasonable rules for action by or at a
meeting of Holders. The Registrar or Paying Agent may make reasonable rules and
set reasonable requirements for its functions.

Section 12.07     No Personal Liability of Directors, Officers, Employees and
                  Stockholders.

                  No director, officer, employee, incorporator or stockholder of
the Company or any Subsidiary of the Company, as such, shall have any liability
for any obligations of the Company or any Subsidiary of the Company under the
Notes or the Subsidiary Guarantees and this Indenture or for any claim based on,
in respect of, or by reason of, such obligations or their creation. Each Holder
of Notes by accepting a Note waives and releases all such liability. The waiver
and release are part of the consideration for issuance of the Notes. Such waiver
may not be effective to waive liabilities under the federal securities laws and
it is the view of the SEC that such a waiver is against public policy.

Section 12.08     Governing Law.

                  THIS INDENTURE, THE NOTES AND THE SUBSIDIARY GUARANTEES SHALL
BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW
YORK.

Section 12.09     No Adverse Interpretation of other Agreements.

                  This Indenture may not be used to interpret any other
indenture, loan or debt agreement of the Company or its Subsidiaries or of any
other Person. Any such indenture, loan or debt agreement may not be used to
interpret this Indenture.

Section 12.10     Successors.

                  All agreements of the Company in this Indenture and the Notes
shall bind its successors. All agreements of the Trustee in this Indenture shall
bind its successors.

                                       85
<PAGE>

Section 12.11     Severability.

                  In case any provision in this Indenture or in the Notes shall
be invalid, illegal or unenforceable, the validity, legality and enforceability
of the remaining provisions shall not in any way be affected or impaired
thereby.

Section 12.12     Counterpart Originals.

                  The parties may sign any number of copies of this Indenture.
Each signed copy shall be an original, but all of them together represent the
same agreement.

Section 12.13     Table of Contents, Headings, Etc.

                  The Table of Contents, Cross-Reference Table and Headings of
the Articles and Sections of this Indenture have been inserted for convenience
of reference only, are not to be considered a part of this Indenture and shall
in no way modify or restrict any of the terms or provisions hereof.

                         [Signatures on following pages]

                                       86
<PAGE>

                                   SIGNATURES

Dated as of May 21, 2003
                                              L-3 COMMUNICATIONS CORPORATION

                                              By:
                                                  ------------------------------
                                                  Name:
                                                  Title:

GUARANTORS:

AMI INSTRUMENTS, INC.
APCOM, INC.
BROADCAST SPORTS INC.
CELERITY SYSTEMS INCORPORATED
EER SYSTEMS, INC.
ELECTRODYNAMICS, INC.
GOODRICH AEROSPACE COMPONENT OVERHAUL & REPAIR, INC.
GOODRICH AVIONICS SYSTEMS, INC.
GOODRICH FLIGHTSYSTEMS, INC.
HENSCHEL, INC.
HYGIENETICS ENVIRONMENTAL SERVICES, INC.
INTERSTATE ELECTRONICS CORPORATION
KDI PRECISION PRODUCTS, INC.
L-3 COMMUNICATIONS AIS GP CORPORATION
L-3 COMMUNICATIONS ANALYTICS CORPORATION
L-3 COMMUNICATIONS ATLANTIC SCIENCE & TECHNOLOGY CORPORATION
L-3 COMMUNICATIONS AYDIN CORPORATION
L-3 COMMUNICATIONS ESSCO, INC.
L-3 COMMUNICATIONS ILEX SYSTEMS, INC.
L-3 COMMUNICATIONS IMC CORPORATION
L-3 COMMUNICATIONS INTEGRATED SYSTEMS L.P.
L-3 COMMUNICATIONS INVESTMENTS, INC.
L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS
         CORPORATION DELAWARE
L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS
         CORPORATION CALIFORNIA
L-3 COMMUNICATIONS SPD TECHNOLOGIES, INC.
L-3 COMMUNICATIONS STORM CONTROL SYSTEMS, INC.
L-3 COMMUNICATIONS TMA CORPORATION
L-3 COMMUNICATIONS WESTWOOD CORPORATION
MCTI ACQUISITION CORPORATION
MICRODYNE COMMUNICATIONS TECHNOLOGY INCORPORATED
MICRODYNE CORPORATION
MICRODYNE OUTSOURCING INCORPORATED
MPRI, INC.
PAC ORD, INC.

                                      S-1
<PAGE>

POWER PARAGON, INC.
SHIP ANALYTICS, INC.
SHIP ANALYTICS INTERNATIONAL, INC.
SHIP ANALYTICS USA, INC.
SOUTHERN CALIFORNIA MICROWAVE, INC.
SPD ELECTRICAL SYSTEMS, INC.
SPD HOLDINGS, INC.
SPD SWITCHGEAR, INC.
SYCOLEMAN CORPORATION
TELOS CORPORATION
TROLL TECHNOLOGY CORPORATION
WESCAM AIR OPS INC.
WESCAM AIR OPS LLC
WESCAM HOLDINGS (US) INC.
WESCAM INCORPORATED
WESCAM LLC
WESCAM SONOMA INC.
WOLF COACH, INC.
         as Guarantors

By:  ______________________________________
      Name:     Christopher C. Cambria
      Title:    Vice President and Secretary

L-3 COMMUNICATIONS INTEGRATED SYSTEMS L.P.
         as Guarantor

By:      L-3 COMMUNICATIONS AIS GP CORPORATION,
         as General Partner

         By:  _________________________________
               Name:
               Title:   Authorized Person

                                   S-2

<PAGE>

THE BANK OF NEW YORK,
         as Trustee

By:   _______________________________
      Name:
      Title:

                                      S-3
<PAGE>

                                    EXHIBIT A
                                 (Face of Note)
================================================================================
                                                                     CUSIP _____

                    6-1/8% Senior Subordinated Notes due 2013

         No. ___                                                      $_________

                         L-3 COMMUNICATIONS CORPORATION

         promises to pay to ______________________________________

         or registered assigns,

         the principal sum of ____________________________________

         Dollars on July 15, 2013.

         Interest Payment Dates: January 15 and July 15.

         Record Dates:  January 1 and July 1.

                                             Dated:  May 21, 2003

                                             L-3 COMMUNICATIONS CORPORATION

                                             By: __________________________
                                                 Name:
                                                 Title:

                                             By: __________________________
                                                 Name:
                                                 Title:

This is one of the [Global]
Notes referred to in the
within-mentioned Indenture:

Dated:  May 21, 2003

THE BANK OF NEW YORK,
       as Trustee

By: _____________________________
    Name:
    Title:

================================================================================

                                      A-1
<PAGE>

                                 (Back of Note)

                    6-1/8% Senior Subordinated Notes due 2013

THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE
GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL
OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES
EXCEPT THAT (I) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED
PURSUANT TO SECTION 2.07 OF THE INDENTURE, (II) THIS GLOBAL NOTE MAY BE
EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE INDENTURE,
(III) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT
TO SECTION 2.11 OF THE INDENTURE AND (IV) THIS GLOBAL NOTE MAY BE TRANSFERRED TO
A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF L-3 COMMUNICATION
CORPORATION. (1)

THE SECURITY (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED IN A
TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE UNITED STATES
SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND THE SECURITY
EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE
ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH
PURCHASER OF THE SECURITY EVIDENCED HEREBY IS HEREBY NOTIFIED THAT THE SELLER
MAY BE RELYING ON THE EXEMPTION FROM THE PROVISION OF SECTION 5 OF THE
SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER. THE HOLDER OF THE SECURITY
EVIDENCED HEREBY AGREES FOR THE BENEFIT OF L-3 COMMUNICATIONS CORPORATION THAT
(A) SUCH SECURITY MAY BE RESOLD, PLEDGED OR OTHERWISE TRANSFERRED, ONLY (1) (a)
TO A PERSON WHOM THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL
BUYER (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) IN A TRANSACTION
MEETING THE REQUIREMENTS OF RULE 144A, (b) IN A TRANSACTION MEETING THE
REQUIREMENTS OF RULE 144 UNDER THE SECURITIES ACT, (c) OUTSIDE THE UNITED STATES
TO A FOREIGN PERSON IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 904 UNDER
THE SECURITIES ACT OR (d) IN ACCORDANCE WITH ANOTHER EXEMPTION FROM THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (AND BASED UPON AN OPINION OF
COUNSEL IF THE COMPANY SO REQUESTS), (2) TO THE COMPANY OR (3) PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT, IN EACH CASE, IN ACCORDANCE WITH ANY
APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER
APPLICABLE JURISDICTION AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS
REQUIRED TO, NOTIFY ANY PURCHASER FROM IT OF THE SECURITY EVIDENCED HEREBY OF
THE RESALE RESTRICTIONS SET FORTH IN (A) ABOVE.

-------------------
(1) This paragraph should be included only if the Note is issued in global
form.

                                      A-2
<PAGE>

                  Capitalized terms used herein shall have the meanings assigned
to them in the Indenture referred to below unless otherwise indicated.

         1. INTEREST. L-3 Communications Corporation, a Delaware corporation
(the "Company"), promises to pay interest on the principal amount of this Note
at 6-1/8% per annum from May 21, 2003 until maturity and shall pay the
Additional Amounts payable pursuant to Section 5 of the Registration Rights
Agreement referred to below. The Company will pay interest and Additional
Amounts, if any, semi-annually on January 15 and July 15 of each year, or if any
such day is not a Business Day, on the next succeeding Business Day (each an
"Interest Payment Date"), with the same force and effect as if made on the date
for such payment. Interest on the Notes will accrue from the most recent date to
which interest has been paid or, if no interest has been paid, from 1:00 p.m.
May 21, 2003; provided that if there is no existing Default in the payment of
interest, and if this Note is authenticated between a record date referred to on
the face hereof and the next succeeding Interest Payment Date, interest shall
accrue from such next succeeding Interest Payment Date; provided, further, that
the first Interest Payment Date shall be July 15, 2003. The Company shall pay
interest (including post-petition interest in any proceeding under any
Bankruptcy Law) on overdue principal and premium, if any, from time to time on
demand at a rate that is 1% per annum in excess of the rate then in effect; it
shall pay interest (including post-petition interest in any proceeding under any
Bankruptcy Law) on overdue installments of interest and Additional Amounts
(without regard to any applicable grace periods) from time to time on demand at
the same rate to the extent lawful. Interest will be computed on the basis of a
360-day year of twelve 30-day months.

         2. METHOD OF PAYMENT. The Company will pay interest on the Notes
(except defaulted interest) and Additional Amounts, if any, to the Persons who
are registered Holders of Notes at the close of business on the January 1 or
July 1 next (whether or not a Business Day) preceding the Interest Payment Date,
even if such Notes are canceled after such record date and on or before such
Interest Payment Date, except as provided in Section 2.12 of the Indenture with
respect to defaulted interest. The Notes will be payable as to principal,
premium and Additional Amounts, if any, and interest at the office or agency of
the Company maintained for such purpose within The City and State of New York,
or, at the option of the Company, payment of interest and Additional Amounts may
be made by check mailed to the Holders at their addresses set forth in the
register of Holders; provided that payment by wire transfer of immediately
available funds will be required with respect to principal of and interest,
premium and Additional Amounts on, all Global Notes and all other Notes the
Holders of which shall have provided wire transfer instructions to the Company
or the Paying Agent if such Holders shall be registered Holders of at least
$250,000 in principal amount of the Notes. Such payment shall be in such coin or
currency of the United States of America as at the time of payment is legal
tender for payment of public and private debts.

         3. PAYING AGENT AND REGISTRAR. Initially, The Bank of New York, the
Trustee under the Indenture, will act as Paying Agent and Registrar. The Company
may change any Paying Agent or Registrar without notice to any Holder. The
Company or any of its Subsidiaries may act in any such capacity.

         4. INDENTURE. The Company issued the Notes under an Indenture dated as
of May 21, 2003 ("Indenture") among the Company, the Guarantors named therein
and the Trustee. The

                                      A-3
<PAGE>

terms of the Notes include those stated in the Indenture and those made part of
the Indenture by reference to the Trust Indenture Act of 1939, as amended (15
U.S. Code ss.ss. 77aaa-77bbbb). The Notes are subject to all such terms, and
Holders are referred to the Indenture and such Act for a statement of such
terms. To the extent any provision of this Note conflicts with the express
provisions of the Indenture, the provisions of the Indenture shall govern and be
controlling.

         5.       OPTIONAL REDEMPTION.

                  (a) Except as set forth in clause (b) of this paragraph 5, the
Notes shall not be redeemable at the Company's option prior to July 15, 2008.
Thereafter, the Notes shall be subject to redemption at any time at the option
of the Company, in whole or in part, upon not less than 30 nor more than 60
days' notice, at the redemption prices (expressed as percentages of principal
amount) set forth below plus accrued and unpaid interest and Additional Amounts
thereon, if any, to the applicable redemption date, if redeemed during the
twelve-month period beginning on July 15 of the years indicated below:

                  YEAR                                          PERCENTAGE
                  2008.......................................    103.063%
                  2009.......................................    102.042%
                  2010.......................................    101.021%
                  2011 and thereafter........................    100.000%

                  (b) Notwithstanding the foregoing, before July 15, 2006, the
Company may on any one or more occasions redeem up to an aggregate of 35% of the
Notes originally issued at a redemption price of 106.125% of the principal
amount thereof, plus accrued and unpaid interest and Additional Amounts thereon,
if any, to the redemption date, with the net cash proceeds of one or more Equity
Offerings by the Company or the net cash proceeds of one or more Equity
Offerings by Holdings that are contributed to the Company as common equity
capital; provided that at least 65% of the Notes originally issued remain
outstanding immediately after the occurrence of each such redemption; and
provided, further, that any such redemption must occur within 120 days of the
date of the closing of such Equity Offering.

         6.       MANDATORY REDEMPTION.

                  Except as set forth in paragraph 7 below, the Company shall
not be required to make mandatory redemption payments with respect to the Notes.

         7.       REPURCHASE AT OPTION OF HOLDER.

                  (a) If there is a Change of Control, the Company shall be
required to make an offer (a "Change of Control Offer") to repurchase all or any
part (equal to $1,000 or an integral multiple thereof) of each Holder's Notes at
a purchase price equal to 101% of aggregate principal amount thereof plus
accrued and unpaid interest, if any, to the date of purchase (the "Change of
Control Payment"). Within 10 days following any Change of Control, the Company
shall mail a notice to each Holder setting forth the procedures governing the
Change of Control Offer as required by the Indenture.

                                      A-4
<PAGE>

                  (b) If the Company or a Subsidiary consummates any Asset
Sales, within five Business Days of each date on which the aggregate amount of
Excess Proceeds exceeds $10.0 million, the Company will be required to make an
offer to all Holders of the Notes (an "Asset Sale Offer") and any other
Indebtedness that ranks pari passu with the Notes (including the May 1998 Notes,
the December 1998 Notes and the 2002 Notes) that, by its terms, requires the
Company to offer to repurchase such Indebtedness with such Excess Proceeds to
purchase the maximum principal amount of Notes and pari passu Indebtedness that
may be purchased out of such Excess Proceeds at an offer price in cash in an
amount equal to 100% of the principal amount thereof plus accrued and unpaid
interest thereon, if any, to the date of purchase, in accordance with the
procedures set forth in the Indenture. To the extent that the aggregate amount
of Notes or pari passu Indebtedness tendered pursuant to an Asset Sale Offer is
less than the Excess Proceeds, the Company may use any Excess Proceeds for
general corporate purposes. If the aggregate principal amount of Notes or pari
passu Indebtedness surrendered by Holders thereof exceeds the amount of Excess
Proceeds in an Asset Sale Offer, the Company shall repurchase such Indebtedness
on a pro rata basis and the Trustee shall select the Notes to be purchased on a
pro rata basis. Holders of Notes that are the subject of an offer to purchase
will receive an Asset Sale Offer from the Company prior to any related purchase
date and may elect to have such Notes purchased by completing the form entitled
"Option of Holder to Elect Purchase" on the reverse of the Notes.

         8. NOTICE OF REDEMPTION. Notice of redemption will be mailed at least
30 days but not more than 60 days before the redemption date to each Holder
whose Notes are to be redeemed at its registered address. Notes in denominations
larger than $1,000 may be redeemed in part but only in whole multiples of
$1,000, unless all of the Notes held by a Holder are to be redeemed. On and
after the redemption date interest ceases to accrue on Notes or portions thereof
called for redemption.

         9. DENOMINATIONS, TRANSFER, EXCHANGE. The Notes are in registered form
without coupons in denominations of $1,000 and integral multiples of $1,000. The
transfer of Notes may be registered and Notes may be exchanged as provided in
the Indenture. The Registrar and the Trustee may require a Holder, among other
things, to furnish appropriate endorsements and transfer documents and the
Company may require a Holder to pay any taxes and fees required by law or
permitted by the Indenture. The Company need not exchange or register the
transfer of any Note or portion of a Note selected for redemption, except for
the unredeemed portion of any Note being redeemed in part. Also, it need not
exchange or register the transfer of any Notes for a period of 15 days before a
selection of Notes to be redeemed or during the period between a record date and
the corresponding Interest Payment Date.

         10. PERSONS DEEMED OWNERS. The registered Holder of a Note may be
treated as its owner for all purposes.

         11. AMENDMENT, SUPPLEMENT AND WAIVER. Subject to certain exceptions,
the Indenture or the Notes may be amended or supplemented with the consent of
the Holders of at least a majority in principal amount of the then outstanding
Notes, and any existing default or compliance with any provision of the
Indenture or the Notes may be waived with the consent of the Holders of a
majority in principal amount of the then outstanding Notes. Without the consent
of any Holder of a Note, the Indenture or the Notes may be amended or
supplemented to cure

                                      A-5
<PAGE>

any ambiguity, defect or inconsistency, to provide for uncertificated Notes in
addition to or in place of certificated Notes, to provide for the assumption of
the Company's obligations to Holders of the Notes in case of a merger or
consolidation, to make any change that would provide any additional rights or
benefits to the Holders of the Notes or that does not adversely affect the legal
rights under the Indenture of any such Holder, or to comply with the
requirements of the SEC in order to effect or maintain the qualification of the
Indenture under the Trust Indenture Act.

         12. DEFAULTS AND REMEDIES. An "Event of Default" occurs if: (i) default
for 30 days in the payment when due of interest on, or Additional Amounts with
respect to, the Notes (whether or not prohibited by the subordination provisions
of the Indenture); (ii) default in payment when due of the principal of or
premium, if any, on the Notes (whether or not prohibited by the subordination
provisions of the Indenture); (iii) failure by the Company to comply with the
covenants contained in sections 4.10, 4.15 or 5.01 of the Indenture; (iv)
failure by the Company for 60 days after notice to comply with any of its other
agreements in the Indenture or the Notes; (v) default under any mortgage,
indenture or instrument under which there may be issued or by which there may be
secured or evidenced any Indebtedness for money borrowed by the Company or any
of its Restricted Subsidiaries (or the payment of which is guaranteed by the
Company or any of its Restricted 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 $25.0 million or more; (vi) failure
by the Company or any of its Restricted Subsidiaries to pay final judgments
aggregating in excess of $25.0 million, which judgments are not paid, discharged
or stayed for a period of 60 days; (vii) certain events of bankruptcy or
insolvency with respect to the Company or any of its Significant Subsidiaries or
any group of Subsidiaries that, taken as a whole, would constitute a Significant
Subsidiary; and (viii) except as permitted by the Indenture, any Subsidiary
Guarantee shall be held in any judicial proceeding to be unenforceable or
invalid.

         If any Event of Default occurs and is continuing, the Trustee or the
Holders of at least 25% in principal amount of the then outstanding Notes may
declare all the Notes to be due and payable immediately; provided, however, that
so long as any Designated Senior Debt is outstanding, such declaration shall not
become effective until the earlier of (i) the day which is five Business Days
after receipt by the Representatives of Designated Senior Debt of such notice of
acceleration or (ii) the date of acceleration of any Designated Senior Debt.
Notwithstanding the foregoing, in the case of an Event of Default arising from
certain events of bankruptcy or insolvency, with respect to the Company or any
Significant Subsidiary or any group of Subsidiaries that, taken as a whole,
would constitute a Significant Subsidiary, all outstanding Notes will become due
and payable without further action or notice. Holders of the Notes may not
enforce the Indenture or the Notes except as provided in the Indenture. Subject
to certain limitations, Holders of a majority in principal amount of the then
outstanding Notes may direct the Trustee in its exercise of any trust or power.
The Trustee may withhold from Holders of the Notes notice of any continuing
Default or Event of Default (except a Default or Event of Default relating to
the payment of principal or interest) if it determines that withholding notice
is in their interest.

                                      A-6
<PAGE>

         In the case of any Event of Default occurring by reason of any willful
action (or inaction) taken (or not taken) by or on behalf of the Company with
the intention of avoiding payment of the premium that the Company would have had
to pay if the Company then had elected to redeem the Notes pursuant to the
optional redemption provisions of the Indenture, an equivalent premium shall
also become and be immediately due and payable to the extent permitted by law
upon the acceleration of the Notes. If an Event of Default occurs prior to July
15, 2008 by reason of any willful action (or inaction) taken (or not taken) by
or on behalf of the Company with the intention of avoiding the prohibition on
redemption of the Notes prior to July 15, 2008, then the premium specified in
the Indenture shall also become immediately due and payable to the extent
permitted by law upon the acceleration of the Notes.

         The Holders of a majority in aggregate principal amount of the Notes
then outstanding by notice to the Trustee may on behalf of the Holders of all of
the Notes waive any existing Default or Event of Default and its consequences
under the Indenture except a continuing Default or Event of Default in the
payment of interest on, or the principal of, the Notes.

         13. SUBORDINATION. Payment of the principal of, premium and Additional
Amounts, if any, or interest on the Notes is subordinated to the prior payment
of Senior Debt on the terms provided in the Indenture.

         14. TRUSTEE DEALINGS WITH COMPANY. The Trustee, in its individual or
any other capacity, may make loans to, accept deposits from, and perform
services for the Company or its Affiliates, and may otherwise deal with the
Company or its Affiliates, as if it were not the Trustee.

         15. NO RECOURSE AGAINST OTHERS. A director, officer, employee,
incorporator or stockholder, of the Company or any Subsidiary of the Company, as
such, shall not have any liability for any obligations of the Company or any
Subsidiary of the Company under the Notes, the Indenture or the Subsidiary
Guarantees or for any claim based on, in respect of, or by reason of, such
obligations or their creation. Each Holder by accepting a Note waives and
releases all such liability. The waiver and release are part of the
consideration for the issuance of the Notes.

         16. AUTHENTICATION. This Note shall not be valid until authenticated by
the manual signature of the Trustee or an authenticating agent.

         17. ABBREVIATIONS. Customary abbreviations may be used in the name of a
Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (=
tenants by the entireties), JT TEN (= joint tenants with right of survivorship
and not as tenants in common), CUST (= custodian), and U/G/M/A (= Uniform Gifts
to Minors Act).

         18. ADDITIONAL RIGHTS OF HOLDERS OF TRANSFER RESTRICTED SECURITIES. In
addition to the rights provided to Holders of Notes under the Indenture, Holders
of Transferred Restricted Securities shall have all the rights set forth in the
Registration Rights Agreement dated as of May 21, 2003, between the Company and
the parties named on the signature pages thereof, or, with respect to any
Additional Notes, Holders of Transfer Restricted Securities shall have all the
rights set forth in one or more registration rights agreements between the
Company and the

                                      A-7
<PAGE>

other parties thereto, relating to rights given by the Company to the purchasers
of Additional Notes (collectively, the "Registration Rights Agreement").

         19. CUSIP NUMBERS. Pursuant to a recommendation promulgated by the
Committee on Uniform Security Identification Procedures, the Company has caused
CUSIP numbers to be printed on the Notes and the Trustee may use CUSIP numbers
in notices of redemption as a convenience to Holders. No representation is made
as to the accuracy of such numbers either as printed on the Notes or as
contained in any notice of redemption and reliance may be placed only on the
other identification numbers placed thereon.

         20. GOVERNING LAW. This Note shall be governed by, and construed in
accordance with, the laws of the State of New York.

         The Company will furnish to any Holder upon written request and without
charge a copy of the Indenture and/or the Registration Rights Agreement.
Requests may be made to:

                 L-3 Communications Corporation
                 600 Third Avenue, 34th Floor,
                 New York, New York  10016
                 Attention: Senior Vice President-Finance (Fax: 212-805-5440)

                                      A-8
<PAGE>

                                 ASSIGNMENT FORM

     To assign this Note, fill in the form below: (I) or (we) assign and
transfer this Note to

--------------------------------------------------------------------------------
                  (Insert assignee's soc. sec. or tax I.D. no.)

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

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

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

--------------------------------------------------------------------------------
              (Print or type assignee's name, address and zip code)

and irrevocably appoint
                       ---------------------------------------------------------
to transfer this Note on the books of the Company. The agent may substitute
another to act for him.

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

Date:
      ---------------------------------

                   Your Signature:
                                  ----------------------------------------------
                   (Sign exactly as your name appears on the face of this Note)

Signature Guarantee.

                                      A-9
<PAGE>

                       Option of Holder to Elect Purchase

         If you want to elect to have this Note purchased by the Company
pursuant to Section 4.10 or 4.15 of the Indenture, check the box below:

         [ ]  Section 4.10              [ ]  Section 4.15

         If you want to elect to have only part of the Note purchased by the
Company pursuant to Section 4.10 or Section 4.15 of the Indenture, state the
amount you elect to have purchased: $______________

Date:                                        Your Signature:
       -----------------------------                         -------------------
                                                  (Sign exactly as your name
                                                  appears on the Note)

                                             Tax Identification No.:
                                                                     -----------

Signature Guarantee.

                                      A-10
<PAGE>

              Schedule of Exchanges of Interests in the Global Note

         The following exchanges of a part of this Global Note for an interest
in another Global Note or for a Definitive Note, or exchanges of a part of
another Global Note or Definitive Note for an interest in this Global Note, have
been made:

<TABLE>
<CAPTION>
                                                                          Principal Amount of
                                                                           this Global Note         Signature of
                           Amount of decrease    Amount of increase in      following such       authorized officer
                           in Principal Amount    Principal Amount of          decrease          of Trustee or Note
    Date of Exchange       of this Global Note      this Global Note         (or increase)            Custodian
-----------------------    -------------------   ---------------------    -------------------    ------------------
<S>                        <C>                   <C>                      <C>                    <C>

</TABLE>

                                      A-11
<PAGE>

                                    EXHIBIT B
                         FORM OF CERTIFICATE OF TRANSFER

L-3 Communications Corporation
600 Third Avenue, 34th Floor,
New York, New York  10016

[Registrar address block]

         Re:  6-1/8% Senior Subordinated Notes due 2013.

         Reference is hereby made to the Indenture, dated as of May 21, 2003
(the "Indenture"), among L-3 Communications Corporation, as issuer (the
"Company"), the Guarantors party thereto and The Bank of New York, as trustee.
Capitalized terms used but not defined herein shall have the meanings given to
them in the Indenture.

         ________________, (the "Transferor") owns and proposes to transfer the
Note[s] or interest in such Note[s] specified in Annex A hereto, in the
principal amount of $___________ in such Note[s] or interests (the "Transfer"),
to ___________ (the "Transferee"), as further specified in Annex A hereto. In
connection with the Transfer, the Transferor hereby certifies that:

                             [CHECK ALL THAT APPLY]

1. [ ] CHECK IF TRANSFEREE WILL TAKE DELIVERY OF BOOK-ENTRY INTERESTS IN THE
144A GLOBAL NOTE OR DEFINITIVE NOTES PURSUANT TO RULE 144A. The Transfer is
being effected pursuant to and in accordance with Rule 144A under the United
States Securities Act of 1933, as amended (the "Securities Act"), and,
accordingly, the Transferor hereby further certifies that the Book-Entry
Interests or Definitive Notes are being transferred to a Person that the
Transferor reasonably believes is purchasing the Book-Entry Interests or
Definitive Notes for its own account, or for one or more accounts with respect
to which such Person exercises sole investment discretion, and such Person and
each such account is a "qualified institutional buyer" within the meaning of
Rule 144A in a transaction meeting the requirements of Rule 144A and such
Transfer is in compliance with any applicable blue sky securities laws of any
state of the United States. Upon consummation of the proposed Transfer in
accordance with the terms of the Indenture, the transferred Book-Entry Interest
or Definitive Note will be subject to the restrictions on transfer enumerated in
the Private Placement Legend printed on the 144A Global Note and/or the
Definitive Note and in the Indenture and the Securities Act.

2. [ ] CHECK IF TRANSFEREE WILL TAKE DELIVERY OF BOOK-ENTRY INTERESTS IN THE
TEMPORARY REGULATION S GLOBAL NOTE, THE REGULATION S GLOBAL NOTE OR DEFINITIVE
NOTES PURSUANT TO REGULATION S. The Transfer is being effected pursuant to and
in accordance with Rule 903 or Rule 904 under the Securities Act and,
accordingly, the Transferor hereby further certifies that (i) the Transfer is
not being made to a person in the United States and (x) at the time the buy
order was originated, the Transferee was outside the United States or such
Transferor and any Person acting on its behalf reasonably believed and believes
that the Transferee was outside the United States or (y) the transaction was
executed in, on or through the facilities of a designated offshore securities
market and neither such Transferor nor any Person acting on its behalf knows
that the

                                      B-1
<PAGE>

transaction was prearranged with a buyer in the United States, (ii) no directed
selling efforts have been made in contravention of the requirements of Rule
903(b) or Rule 904(b) of Regulation S under the Securities Act and (iii) the
transaction is not part of a plan or scheme to evade the registration
requirements of the Securities Act and (iv) if the proposed transfer is being
made prior to the expiration of the Restricted Period, the transfer is not being
made to a U.S. Person or for the account or benefit of a U.S. Person (other than
an Initial Purchaser). Upon consummation of the proposed transfer in accordance
with the terms of the Indenture, the transferred Book-Entry Interest or
Definitive Note will be subject to the restrictions on Transfer enumerated in
the Private Placement Legend printed on the Regulation S Global Note and/or the
Definitive Note and in the Indenture and the Securities Act.

3. [ ] CHECK AND COMPLETE IF TRANSFEREE WILL TAKE DELIVERY OF BOOK-ENTRY
INTERESTS IN THE IAI GLOBAL NOTE OR DEFINITIVE NOTES PURSUANT TO ANY PROVISION
OF THE SECURITIES ACT OTHER THAN RULE 144A OR REGULATION S. The Transfer is
being effected in compliance with the transfer restrictions applicable to
Book-Entry Interests in Restricted Global Notes and Definitive Notes bearing the
Private Placement Legend and pursuant to and in accordance with the Securities
Act and any applicable blue sky securities laws of any State of the United
States, and accordingly the Transferor hereby further certifies that (check
one):

     (a) [ ] such Transfer is being effected pursuant to and in accordance with
Rule 144 under the Securities Act;

                                       OR

     (b) [ ] such Transfer is being effected to the Company or a subsidiary
thereof,

                                       OR

     (c) [ ] such Transfer is being effected pursuant to an effective
registration statement under the Securities Act;

                                       OR

     (d) [ ] such Transfer is being effected to an Institutional Accredited
Investor and pursuant to an exemption from the registration requirements of the
Securities Act other than Rule 144A, Rule 144 or Rule 904, and the Transferor
hereby further certifies that the Transfer complies with the transfer
restrictions applicable to Book-Entry Interests in a Restricted Global Note or
Definitive Notes bearing the Private Placement Legend and the requirements of
the exemption claimed, which certification is supported by (x) if such Transfer
is in respect of a principal amount of Notes at the time of Transfer of $250,000
or more, a certificate executed by the Transferee in the form of Exhibit D to
the Indenture, or (y) if such Transfer is in respect of a principal amount of
Notes at the time of transfer of less than $250,000, (1) a certificate executed
by the Transferee in the form of Exhibit D to the Indenture and (2) an Opinion
of Counsel provided by the Transferor or the Transferee (a copy of which the
Transferor has attached to this certification), to the effect that (1) such
Transfer is in compliance with the Securities Act and (2) such Transfer complies
with any applicable blue sky securities laws of any state of the United States.
Upon consummation of the proposed transfer in accordance with the terms of the
Indenture, the transferred Book-Entry Interest or Definitive Note will be
subject to the restrictions on transfer enumerated in the Private Placement
Legend printed on the IAI Global Note and/or the Definitive Notes and in the
Indenture and the Securities Act.

                                      B-2
<PAGE>

4. [ ] CHECK IF TRANSFEREE WILL TAKE DELIVERY OF BOOK-ENTRY INTERESTS IN THE
UNRESTRICTED GLOBAL NOTE OR IN DEFINITIVE NOTES THAT DO NOT BEAR THE PRIVATE
PLACEMENT LEGEND.

     (a) [ ] CHECK IF TRANSFER IS PURSUANT TO RULE 144. (i) The Transfer is
being effected pursuant to and in accordance with Rule 144 under the Securities
Act and in compliance with the transfer restrictions contained in the Indenture
and any applicable blue sky securities laws of any state of the United States
and (ii) the restrictions on transfer contained in the Indenture and the Private
Placement Legend are not required in order to maintain compliance with the
Securities Act. Upon consummation of the proposed Transfer in accordance with
the terms of the Indenture, the transferred Book-Entry Interests or Definitive
Notes will no longer be subject to the restrictions on transfer enumerated in
the Private Placement Legend printed on the Restricted Global Notes, on
Definitive Notes bearing the Private Placement Legend and in the Indenture.

     (b) [ ] CHECK IF TRANSFER IS PURSUANT TO REGULATION S. (i) The Transfer is
being effected pursuant to and in accordance with Rule 903 or Rule 904 under the
Securities Act and in compliance with the transfer restrictions contained in the
Indenture and any applicable blue sky securities laws of any state of the United
States and (ii) the restrictions on transfer contained in the Indenture and the
Private Placement Legend are not required in order to maintain compliance with
the Securities Act. Upon consummation of the proposed Transfer in accordance
with the terms of the Indenture, the transferred Book-Entry Interests or
Definitive Notes will no longer be subject to the restrictions on transfer
enumerated in the Private Placement Legend printed on the Restricted Global
Notes, on Definitive Notes bearing the Private Placement Legend and in the
Indenture.

     (c) [ ] CHECK IF TRANSFER IS PURSUANT TO OTHER EXEMPTION. (i) The Transfer
is being effected pursuant to and in compliance with an exemption from the
registration requirements of the Securities Act other than Rule 144, Rule 903 or
Rule 904 and in compliance with the transfer restrictions contained in the
Indenture and any applicable blue sky securities laws of any State of the United
States and (ii) the restrictions on transfer contained in the Indenture and the
Private Placement Legend are not required in order to maintain compliance with
the Securities Act. Upon consummation of the proposed Transfer in accordance
with the terms of the Indenture, the transferred Book-Entry Interests or
Definitive Notes will not be subject to the restrictions on transfer enumerated
in the Private Placement Legend printed on the Restricted Global Notes or
Definitive Notes bearing the Private Placement Legend and in the Indenture.

     This certificate and the statements contained herein are made for your
benefit and the benefit of the Company.

                                              ----------------------------------
                                              [Insert Name of Transferor]

                                              By:
                                                 -------------------------------
                                                 Name:
                                                 Title:

Dated:  ____________, ____

                                      B-3
<PAGE>

                       ANNEX A TO CERTIFICATE OF TRANSFER

1.   The Transferor owns and proposes to transfer the following:

                            [CHECK ONE OF (A) OR (B)]

     (a) [ ] Book-Entry Interests in the:

          (i)   [ ] 144A Global Note (CUSIP _______), or

          (ii)  [ ] Regulation S Global Note (CUSIP ______), or

          (iii) [ ] IAI Global Note (CUSIP ________); or

     (b) [ ] Restricted Definitive Notes.

2.       After the Transfer the Transferee will hold:

                                   [CHECK ONE]

     (a) [ ] Book-Entry Interests in the:

          (i)   [ ] 144A Global Note (CUSIP _____), or

          (ii)  [ ] Regulation S Global Note (CUSIP _____), or

          (iii) [ ] IAI Global Note (CUSIP ______); or

          (iv)  [ ] Unrestricted Global Note (CUSIP ______); or

     (b) [ ] Restricted Definitive Notes; or

     (c) [ ] Definitive Notes that do not bear the Private Placement Legend,
             in accordance with the terms of the Indenture.

                                      B-4
<PAGE>

                                    EXHIBIT C

                         FORM OF CERTIFICATE OF EXCHANGE

L-3 Communications Corporation
600 Third Avenue, 34th Floor,
New York, New York 10016
Attention:  Senior Vice President-Finance (Fax: 212-805-5440)

         Re:  6-1/8% Senior Subordinated Notes due 2013

                              (CUSIP ____________)

                  Reference is hereby made to the Indenture, dated as of May 21,
2003 (the "Indenture"), among L-3 Communications Corporation, as issuer (the
"Company"), the Guarantors party thereto and The Bank of New York, as trustee.
Capitalized terms used but not defined herein shall have the meanings given to
them in the Indenture.

                  ______________, (the "Holder") owns and proposes to exchange
the Note[s] or interest in such Note[s] specified herein, in the principal
amount of $______________ in such Note[s] or interests (the "Exchange"). In
connection with the Exchange, the Holder hereby certifies that:

1. EXCHANGE OF RESTRICTED DEFINITIVE NOTES OR RESTRICTED BOOK-ENTRY INTERESTS
FOR DEFINITIVE NOTES THAT DO NOT BEAR THE PRIVATE PLACEMENT LEGEND OR
UNRESTRICTED BOOK-ENTRY INTERESTS

     (a) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED BOOK-ENTRY INTEREST TO
UNRESTRICTED BOOK-ENTRY INTEREST. In connection with the Exchange of the
Holder's Restricted Book-Entry Interest for Unrestricted Book-Entry Interests in
an equal principal amount, the Holder hereby certifies (i) the Unrestricted
Book-Entry Interests are being acquired for the Holder's own account without
transfer, (ii) such Exchange has been effected in compliance with the transfer
restrictions applicable to the Global Notes and pursuant to and in accordance
with the United States Securities Act of 1933, as amended (the "Securities
Act"), (iii) the restrictions on transfer contained in the Indenture and the
Private Placement Legend are not required in order to maintain compliance with
the Securities Act and (iv) the Unrestricted Book-Entry Interests are being
acquired in compliance with any applicable blue sky securities laws of any state
of the United States.

     (b) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED BOOK-ENTRY INTEREST TO
DEFINITIVE NOTES THAT DO NOT BEAR THE PRIVATE PLACEMENT LEGEND. In connection
with the Exchange of the Holder's Restricted Book-Entry Interests for Definitive
Notes that do not bear the Private Placement Legend, the Holder hereby certifies
(i) the Definitive Notes are being acquired for the Holder's own account without
transfer, (ii) such Exchange has been effected in compliance with the transfer
restrictions applicable to the Restricted Global Notes and pursuant to and in
accordance with the Securities Act, (iii) the restrictions on transfer contained
in the Indenture and the Private Placement Legend are not required in order to
maintain compliance with the

                                      C-1
<PAGE>

Securities Act and (iv) the Definitive Notes are being acquired in compliance
with any applicable blue sky securities laws of any state of the United States.

     (c) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED DEFINITIVE NOTES TO
UNRESTRICTED BOOK-ENTRY INTERESTS. In connection with the Holder's Exchange of
Restricted Definitive Notes for Unrestricted Book-Entry Interests, (i) the
Unrestricted Book-Entry Interests are being acquired for the Holder's own
account without transfer, (ii) such Exchange has been effected in compliance
with the transfer restrictions applicable to Restricted Definitive Notes and
pursuant to and in accordance with the Securities Act, (iii) the restrictions on
transfer contained in the Indenture and the Private Placement Legend are not
required in order to maintain compliance with the Securities Act and (iv) the
Unrestricted Book-Entry Interests are being acquired in compliance with any
applicable blue sky securities laws of any state of the United States.

     (d) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED DEFINITIVE NOTES TO DEFINITIVE
NOTES THAT DO NOT BEAR THE PRIVATE PLACEMENT LEGEND. In connection with the
Holder's Exchange of a Restricted Definitive Note for Definitive Notes that do
not bear the Private Placement Legend, the Holder hereby certifies (i) the
Definitive Notes that do not bear the Private Placement Legend are being
acquired for the Holder's own account without transfer, (ii) such Exchange has
been effected in compliance with the transfer restrictions applicable to
Restricted Definitive Notes and pursuant to and in accordance with the
Securities Act , (iii) the restrictions on transfer contained in the Indenture
and the Private Placement Legend are not required in order to maintain
compliance with the Securities Act and (iv) the Notes are being acquired in
compliance with any applicable blue sky securities laws of any state of the
United States.

2. EXCHANGE OF RESTRICTED DEFINITIVE NOTES OR RESTRICTED BOOK-ENTRY INTERESTS
FOR RESTRICTED DEFINITIVE NOTES OR RESTRICTED BOOK-ENTRY INTERESTS

     (a)[ ] CHECK IF EXCHANGE IS FROM RESTRICTED BOOK-ENTRY INTERESTS TO
RESTRICTED DEFINITIVE NOTE. In connection with the Exchange of the Holder's
Restricted Book-Entry Interest for Restricted Definitive Notes with an equal
principal amount, (i) the Restricted Definitive Notes are being acquired for the
Holder's own account without transfer and (ii) such Exchange has been effected
in compliance with the transfer restrictions applicable to the Restricted Global
Notes and pursuant to and in accordance with the Securities Act, and in
compliance with any applicable blue sky securities laws of any state of the
United States. Upon consummation of the proposed Exchange in accordance with the
terms of the Indenture, the Restricted Definitive Notes issued will be subject
to the restrictions on transfer enumerated in the Private Placement Legend
printed on the Restricted Definitive Notes and in the Indenture and the
Securities Act.

     (b) [ ] CHECK IF EXCHANGE IS FROM RESTRICTED DEFINITIVE NOTES TO RESTRICTED
BOOK-ENTRY INTERESTS. In connection with the Exchange of the Holder's Restricted
Definitive Note for Restricted Book-Entry Interests in the [CHECK ONE] [ ] 144A
Global Note, [ ] Regulation S Global Note, [ ] IAI Global Note with an equal
principal amount, (i) the Definitive Notes are being acquired for the Holder's
own account without transfer and (ii) such Exchange has been effected in
compliance with the transfer restrictions applicable to the Restricted
Definitive Note and pursuant to and in accordance with the Securities Act, and
in compliance with any applicable blue sky securities laws of any state of the
United States. Upon

                                      C-2
<PAGE>

consummation of the proposed Exchange in accordance with the terms of the
Indenture, the Book-Entry Interests issued will be subject to the restrictions
on transfer enumerated in the Private Placement Legend printed on the relevant
Restricted Global Note and in the Indenture and the Securities Act.

         This certificate and the statements contained herein are made for your
benefit and the benefit of the Company.

                                       -----------------------------------------
                                       [Insert Name of Transferor]

                                       By:
                                          --------------------------------------
                                          Name:
                                          Title:

Dated:  ____________, ____

                                      C-3
<PAGE>

                                    EXHIBIT D

                            FORM OF CERTIFICATE FROM
                   ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR

L-3 Communications Corporation
600 Third Avenue, 34th Floor,
New York, New York  10016
Attention:  Senior Vice President-Finance (Fax: 212-805-5440)

         Re:  6-1/8% Senior Subordinated Notes due 2013

                  Reference is hereby made to the Indenture, dated as of May 21,
2003 (the "Indenture"), among L-3 Communications Corporation, as issuer (the
"Company"), the Guarantors party thereto and The Bank of New York, as trustee.
Capitalized terms used but not defined herein shall have the meanings given to
them in the Indenture.

                  In connection with our proposed purchase of $____________
aggregate principal amount at maturity of:

         (a) [ ] Book-Entry Interests, or

         (b) [ ] Definitive Notes,

         we confirm that:

                  1. We understand that any subsequent transfer of the Notes or
any interest therein is subject to certain restrictions and conditions set forth
in the Indenture and the undersigned agrees to be bound by, and not to resell,
pledge or otherwise transfer the Notes or any interest therein except in
compliance with, such restrictions and conditions and the United States
Securities Act of 1933, as amended (the "Securities Act").

                  2. We understand that the offer and sale of the Notes have not
been registered under the Securities Act, and that the Notes and any interest
therein may not be offered or sold except as permitted in the following
sentence. We agree, on our own behalf and on behalf of any accounts for which we
are acting as hereinafter stated, that if we should sell the Notes or any
interest therein, we will do so only (A) to the Company or any subsidiary
thereof, (B) in accordance with Rule 144A under the Securities Act to a
"qualified institutional buyer" (as defined therein), (C) to an institutional
"accredited investor" (as defined below) that, prior to such transfer, furnishes
(or has furnished on its behalf by a U.S. broker-dealer) to you and to the
Company a signed letter substantially in the form of this letter and, if such
transfer is in respect of a principal amount of Notes, at the time of transfer
of less than $250,000, an Opinion of Counsel in form reasonably acceptable to
the Company to the effect that such transfer is in compliance with the
Securities Act, (D) outside the United States in accordance with Rule 904 of
Regulation S under the Securities Act, (E) pursuant to the provisions of Rule
144 under the Securities Act or (F) pursuant to an effective registration
statement under the Securities Act, and we further agree to provide to any
person purchasing the Definitive Notes or Book-Entry

                                      D-1
<PAGE>

Interests from us in a transaction meeting the requirements of clauses (A)
through (E) of this paragraph a notice advising such purchaser that resales
thereof are restricted as stated herein.

                  3. We understand that, on any proposed resale of the Notes or
Book-Entry Interests, we will be required to furnish to you and the Company such
certifications, legal opinions and other information as you and the Company may
reasonably require to confirm that the proposed sale complies with the foregoing
restrictions. We further understand that the Notes purchased by us will bear a
legend to the foregoing effect. We further understand that any subsequent
transfer by us of the Notes or Book-Entry Interests therein acquired by us must
be effected through one of the Placement Agents.

                  4. We are an institutional "accredited investor" (as defined
in Rule 501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act) and
have such knowledge and experience in financial and business matters as to be
capable of evaluating the merits and risks of our investment in the Notes, and
we and any accounts for which we are acting are each able to bear the economic
risk of our or its investment.

                  5. We are acquiring the Notes or Book-Entry Interests
purchased by us for our own account or for one or more accounts (each of which
is an institutional "accredited investor") as to each of which we exercise sole
investment discretion.

                  You and the Company are entitled to rely upon this letter and
are irrevocably authorized to produce this letter or a copy hereof to any
interested party in any administrative or legal proceedings or official inquiry
with respect to the matters covered hereby.

                                      ------------------------------------------
                                      [Insert Name of Accredited Investor]

                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title:

Dated:  ____________, ____

                                      D-2
<PAGE>

                                    EXHIBIT E

                 FORM OF SUPPLEMENTAL INDENTURE TO BE DELIVERED
                           BY GUARANTEEING SUBSIDIARY

                  SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), dated
as of _________________, among ____________________ (the "Guaranteeing
Subsidiaries"), each a direct or indirect subsidiary of L-3 Communications
Corporation (or its permitted successor), a Delaware corporation (the
"Company"), the Company and The Bank of New York, as trustee under the indenture
referred to below (the "Trustee").

                                   WITNESSETH

                  WHEREAS, the Company has heretofore executed and delivered to
the Trustee an indenture (the "Indenture"), dated as of May 21, 2003 providing
for the issuance of an unlimited amount of 6-1/8% Senior Subordinated Notes due
2013 (the "Notes");

                  WHEREAS, the Indenture provides that under certain
circumstances the Guaranteeing Subsidiaries shall execute and deliver to the
Trustee a supplemental indenture pursuant to which the Guaranteeing Subsidiaries
shall unconditionally guarantee all of the Company's Obligations (as defined in
the Indenture) under the Notes and the Indenture on the terms and conditions set
forth herein (the "Subsidiary Guarantee"); and

                  WHEREAS, pursuant to Section 9.01 of the Indenture, the
Trustee is authorized to execute and deliver this Supplemental Indenture.

                  NOW THEREFORE, in consideration of the foregoing and for other
good and valuable consideration, the receipt of which is hereby acknowledged,
the Guaranteeing Subsidiaries and the Trustee mutually covenant and agree for
the equal and ratable benefit of the Holders of the Notes as follows:

     1.   CAPITALIZED TERMS. Capitalized terms used herein without definition
shall have the meanings assigned to them in the Indenture.

     2.   AGREEMENT TO GUARANTEE. Each Guaranteeing Subsidiary hereby agrees as
follows:

          (a)  Such Guaranteeing Subsidiary, jointly and severally with all
               other current and future guarantors of the Notes (collectively,
               the "Guarantors" and each, a "Guarantor"), unconditionally
               guarantees to each Holder of a Note authenticated and delivered
               by the Trustee and to the Trustee and its successors and assigns,
               regardless of the validity and enforceability of the Indenture,
               the Notes or the Obligations of the Company under the Indenture
               or the Notes, that:

               (i)  the principal of, premium, interest and Additional Amounts,
                    if any, on the Notes will be promptly paid in full when due,
                    whether at maturity, by acceleration, redemption or
                    otherwise, and interest on

                                      E-1
<PAGE>

                    the overdue principal of, premium, interest and Additional
                    Amounts, if any, on the Notes, to the extent lawful, and all
                    other Obligations of the Company to the Holders or the
                    Trustee thereunder or under the Indenture will be promptly
                    paid in full, all in accordance with the terms thereof; and

               (ii) in case of any extension of time for payment or renewal of
                    any Notes or any of such other Obligations, that the same
                    will be promptly paid in full when due in accordance with
                    the terms of the extension or renewal, whether at stated
                    maturity, by acceleration or otherwise.

          (b)  Notwithstanding the foregoing, in the event that this Subsidiary
               Guarantee would constitute or result in a violation of any
               applicable fraudulent conveyance or similar law of any relevant
               jurisdiction, the liability of such Guaranteeing Subsidiary under
               this Supplemental Indenture and its Subsidiary Guarantee shall be
               reduced to the maximum amount permissible under such fraudulent
               conveyance or similar law.

     3.   EXECUTION AND DELIVERY OF SUBSIDIARY GUARANTEES.

          (a)  To evidence its Subsidiary Guarantee set forth in this
               Supplemental Indenture, such Guaranteeing Subsidiary hereby
               agrees that a notation of such Subsidiary Guarantee substantially
               in the form of Exhibit F to the Indenture shall be endorsed by an
               officer of such Guaranteeing Subsidiary on each Note
               authenticated and delivered by the Trustee after the date hereof.

          (b)  Notwithstanding the foregoing, such Guaranteeing Subsidiary
               hereby agrees that its Subsidiary Guarantee set forth herein
               shall remain in full force and effect notwithstanding any failure
               to endorse on each Note a notation of such Subsidiary Guarantee.

          (c)  If an Officer whose signature is on this Supplemental Indenture
               or on the Subsidiary Guarantee no longer holds that office at the
               time the Trustee authenticates the Note on which a Subsidiary
               Guarantee is endorsed, the Subsidiary Guarantee shall be valid
               nevertheless.

          (d)  The delivery of any Note by the Trustee, after the authentication
               thereof under the Indenture, shall constitute due delivery of the
               Subsidiary Guarantee set forth in this Supplemental Indenture on
               behalf of each Guaranteeing Subsidiary.

          (e)  Each Guaranteeing Subsidiary hereby agrees that its Obligations
               hereunder shall be unconditional, regardless of the validity,
               regularity or enforceability of the Notes or the Indenture, the
               absence of any action to enforce the same, any waiver or consent
               by any Holder of the Notes with respect to any provisions hereof
               or thereof, the recovery of any judgment

                                      E-2
<PAGE>

               against the Company, any action to enforce the same or any other
               circumstance which might otherwise constitute a legal or
               equitable discharge or defense of a guarantor.

          (f)  Each Guaranteeing Subsidiary hereby waives diligence,
               presentment, demand of payment, filing of claims with a court in
               the event of insolvency or bankruptcy of the Company, any right
               to require a proceeding first against the Company, protest,
               notice and all demands whatsoever and covenants that its
               Subsidiary Guarantee made pursuant to this Supplemental Indenture
               will not be discharged except by complete performance of the
               Obligations contained in the Notes and the Indenture.

          (g)  If any Holder or the Trustee is required by any court or
               otherwise to return to the Company or any Guaranteeing
               Subsidiary, or any custodian, Trustee, liquidator or other
               similar official acting in relation to either the Company or such
               Guaranteeing Subsidiary, any amount paid by either to the Trustee
               or such Holder, the Subsidiary Guarantee made pursuant to this
               Supplemental Indenture, to the extent theretofore discharged,
               shall be reinstated in full force and effect.

          (h)  Each Guaranteeing Subsidiary agrees that it shall not be entitled
               to any right of subrogation in relation to the Holders in respect
               of any Obligations guaranteed hereby until payment in full of all
               Obligations guaranteed hereby. Each Guaranteeing Subsidiary
               further agrees that, as between such Guaranteeing Subsidiary, on
               the one hand, and the Holders and the Trustee, on the other hand:

               (i)  the maturity of the Obligations guaranteed hereby may be
                    accelerated as provided in Article 6 of the Indenture for
                    the purposes of the Subsidiary Guarantee made pursuant to
                    this Supplemental Indenture, notwithstanding any stay,
                    injunction or other prohibition preventing such acceleration
                    in respect of the Obligations guaranteed hereby; and

               (ii) in the event of any declaration of acceleration of such
                    Obligations as provided in Article 6 of the Indenture, such
                    Obligations (whether or not due and payable) shall forthwith
                    become due and payable by such Guaranteeing Subsidiary for
                    the purpose of the Subsidiary Guarantee made pursuant to
                    this Supplemental Indenture.

          (i)  Each Guaranteeing Subsidiary shall have the right to seek
               contribution from any other non-paying Guaranteeing Subsidiary so
               long as the exercise of such right does not impair the rights of
               the Holders or the Trustee under the Subsidiary Guarantee made
               pursuant to this Supplemental Indenture.

                                      E-3
<PAGE>

     4.   GUARANTEEING SUBSIDIARY MAY CONSOLIDATE, ETC. ON CERTAIN TERMS.

          (a)  Except as set forth in Articles 4 and 5 of the Indenture, nothing
               contained in the Indenture, this Supplemental Indenture or in the
               Notes shall prevent any consolidation or merger of any
               Guaranteeing Subsidiary with or into the Company or any other
               Guarantor or shall prevent any transfer, sale or conveyance of
               the property of any Guaranteeing Subsidiary as an entirety or
               substantially as an entirety, to the Company or any other
               Guarantor.

          (b)  Except as set forth in Articles 4 and 5 of the Indenture, nothing
               contained in the Indenture, this Supplemental Indenture or in the
               Notes shall prevent any consolidation or merger of any
               Guaranteeing Subsidiary with or into a corporation or
               corporations other than the Company or any other Guarantor (in
               each case, whether or not affiliated with the Guaranteeing
               Subsidiary), or successive consolidations or mergers in which a
               Guaranteeing Subsidiary or its successor or successors shall be a
               party or parties, or shall prevent any sale or conveyance of the
               property of any Guaranteeing Subsidiary as an entirety or
               substantially as an entirety, to a corporation other than the
               Company or any other Guarantor (in each case, whether or not
               affiliated with the Guaranteeing Subsidiary) authorized to
               acquire and operate the same; provided, however, that each
               Guaranteeing Subsidiary hereby covenants and agrees that (i)
               subject to the Indenture, upon any such consolidation, merger,
               sale or conveyance, the due and punctual performance and
               observance of all of the covenants and conditions of the
               Indenture and this Supplemental Indenture to be performed by such
               Guaranteeing Subsidiaries, shall be expressly assumed (in the
               event that such Guaranteeing Subsidiary is not the surviving
               corporation in the merger), by supplemental indenture
               satisfactory in form to the Trustee, executed and delivered to
               the Trustee, by the corporation formed by such consolidation, or
               into which such Guaranteeing Subsidiary shall have been merged,
               or by the corporation which shall have acquired such property and
               (ii) immediately after giving effect to such consolidation,
               merger, sale or conveyance no Default or Event of Default exists.

          (c)  In case of any such consolidation, merger, sale or conveyance and
               upon the assumption by the successor corporation, by supplemental
               indenture, executed and delivered to the Trustee and satisfactory
               in form to the Trustee, of the Subsidiary Guarantee made pursuant
               to this Supplemental Indenture and the due and punctual
               performance of all of the covenants and conditions of the
               Indenture and this Supplemental Indenture to be performed by such
               Guaranteeing Subsidiary, such successor corporation shall succeed
               to and be substituted for such Guaranteeing Subsidiary with the
               same effect as if it had been named herein as the Guaranteeing
               Subsidiary. Such successor corporation thereupon may cause to be
               signed any or all of the Subsidiary Guarantees to be endorsed
               upon the Notes issuable under the Indenture which theretofore
               shall not have been signed

                                      E-4
<PAGE>

               by the Company and delivered to the Trustee. All the Subsidiary
               Guarantees so issued shall in all respects have the same legal
               rank and benefit under the Indenture and this Supplemental
               Indenture as the Subsidiary Guarantees theretofore and thereafter
               issued in accordance with the terms of the Indenture and this
               Supplemental Indenture as though all of such Subsidiary
               Guarantees had been issued at the date of the execution hereof.

     5.   RELEASES.

          (a)  Concurrently with any sale of assets (including, if applicable,
               all of the Capital Stock of a Guaranteeing Subsidiary), all
               Liens, if any, in favor of the Trustee in the assets sold thereby
               shall be released; provided that in the event of an Asset Sale,
               the Net Proceeds from such sale or other disposition are treated
               in accordance with the provisions of Section 4.10 of the
               Indenture. If the assets sold in such sale or other disposition
               include all or substantially all of the assets of a Guaranteeing
               Subsidiary or all of the Capital Stock of a Guaranteeing
               Subsidiary, then the Guaranteeing Subsidiary (in the event of a
               sale or other disposition of all of the Capital Stock of such
               Guaranteeing Subsidiary) or the Person acquiring the property (in
               the event of a sale or other disposition of all or substantially
               all of the assets of such Guaranteeing Subsidiary) shall be
               released from and relieved of its Obligations under this
               Supplemental Indenture and its Subsidiary Guarantee made pursuant
               hereto; provided that in the event of an Asset Sale, the Net
               Proceeds from such sale or other disposition are treated in
               accordance with the provisions of Section 4.10 of the Indenture.
               Upon delivery by the Company to the Trustee of an Officers'
               Certificate to the effect that such sale or other disposition was
               made by the Company or the Guaranteeing Subsidiary, as the case
               may be, in accordance with the provisions of the Indenture and
               this Supplemental Indenture, including without limitation,
               Section 4.10 of the Indenture, the Trustee shall execute any
               documents reasonably required in order to evidence the release of
               the Guaranteeing Subsidiary from its Obligations under this
               Supplemental Indenture and its Subsidiary Guarantee made pursuant
               hereto. If the Guaranteeing Subsidiary is not released from its
               Obligations under its Subsidiary Guarantee, it shall remain
               liable for the full amount of principal of and interest on the
               Notes and for the other Obligations of such Guaranteeing
               Subsidiary under the Indenture as provided in this Supplemental
               Indenture.

          (b)  Upon the designation of a Guaranteeing Subsidiary as an
               Unrestricted Subsidiary in accordance with the terms of the
               Indenture, such Guaranteeing Subsidiary shall be released and
               relieved of its Obligations under its Subsidiary Guarantee and
               this Supplemental Indenture. Upon delivery by the Company to the
               Trustee of an Officers' Certificate and an Opinion of Counsel to
               the effect that such designation of such Guaranteeing Subsidiary
               as an Unrestricted Subsidiary was made by the

                                      E-5
<PAGE>

               Company in accordance with the provisions of the Indenture,
               including without limitation Section 4.07 of the Indenture, the
               Trustee shall execute any documents reasonably required in order
               to evidence the release of such Guaranteeing Subsidiary from its
               Obligations under its Subsidiary Guarantee. Any Guaranteeing
               Subsidiary not released from its Obligations under its Subsidiary
               Guarantee shall remain liable for the full amount of principal of
               and interest on the Notes and for the other Obligations of any
               Guaranteeing Subsidiary under the Indenture as provided herein.

          (c)  Each Guaranteeing Subsidiary shall be released and relieved of
               its obligations under this Supplemental Indenture in accordance
               with, and subject to, Section 4.18 of the Indenture.

         6. NO RECOURSE AGAINST OTHERS. No past, present or future director,
officer, employee, incorporator, stockholder or agent of any Subsidiary of the
Company, as such, shall have any liability for any Obligations of the Company or
any Subsidiary of the Company under the Notes, any Subsidiary Guarantees, the
Indenture or this Supplemental Indenture or for any claim based on, in respect
of, or by reason of, such Obligations or their creation. Each Holder of the
Notes by accepting a Note waives and releases all such liability. The waiver and
release are part of the consideration for issuance of the Notes. Such waiver may
not be effective to waive liabilities under the federal securities laws and it
is the view of the SEC that such a waiver is against public policy.

         7. ANTI-LAYERING; SUBORDINATION OF SUBSIDIARY GUARANTEES. No
Guaranteeing Subsidiary shall 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 Guaranteeing Subsidiary and senior in
any respect in right of payment to any of the Subsidiary Guarantees.
Notwithstanding the foregoing sentence, the Subsidiary Guarantee of each
Guaranteeing Subsidiary shall be subordinated to the prior payment in full of
all Senior Debt of that Guaranteeing Subsidiary (in the same manner and to the
same extent that the Notes are subordinated to Senior Debt), which shall include
all guarantees of Senior Debt.

          8. NEW YORK LAW TO GOVERN. THIS SUPPLEMENTAL INDENTURE SHALL BE
GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW
YORK.

          9. COUNTERPARTS. The parties may sign any number of copies of this
Supplemental Indenture. Each signed copy shall be an original, but all of them
together represent the same agreement.

          10. EFFECT OF HEADINGS. The Section headings herein are for
convenience only and shall not affect the construction hereof.

          11. THE TRUSTEE. The Trustee shall not be responsible in any manner
whatsoever for or in respect of the validity or sufficiency of this Supplemental
Indenture or for or in respect of the recitals contained herein, all of which
recitals are made solely by the Guaranteeing Subsidiaries and the Company.

                                      E-6
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Supplemental Indenture to be duly executed and attested, all as of the date
first above written.

Dated:  ______________, ______

                                         L-3 COMMUNICATIONS CORPORATION

                                         By:
                                            -----------------------------------
                                            Name:
                                            Title:

GUARANTEEING SUBSIDIARIES:

[EXISTING GUARANTORS]
[ADDITIONAL GUARANTORS]

Dated:  ______________, ______

THE BANK OF NEW YORK,
         as Trustee

By:
   ---------------------------
   Name:
   Title:

                                      E-7
<PAGE>

                                    EXHIBIT F

            FORM OF NOTATION ON SENIOR SUBORDINATED NOTE RELATING TO
                              SUBSIDIARY GUARANTEE

                  Pursuant to the Indenture (the "Indenture"), dated as of May
21, 2003, among L-3 Communications Corporation, the Guarantors party thereto
(each a "Guarantor" and collectively the "Guarantors") and The Bank of New York,
as trustee (the "Trustee"), each Guarantor (i) has jointly and severally
unconditionally guaranteed (a) the due and punctual payment of the principal of,
and premium, interest and Additional Amounts on the Notes, whether at maturity
or an interest payment date, by acceleration, call for redemption or otherwise,
(b) the due and punctual payment of interest on the overdue principal and
premium of, and interest and Additional Amounts on the Notes, and (c) in case of
any extension of time of payment or renewal of any Notes or any of such other
Obligations, the same will be promptly paid in full when due in accordance with
the terms of the extension or renewal, whether at stated maturity, by
acceleration or otherwise and (ii) has agreed to pay any and all costs and
expenses (including reasonable attorneys' fees) incurred by the Trustee or any
Holder in enforcing any rights under the Subsidiary Guarantee (as defined in the
Supplemental Indenture). Notwithstanding the foregoing, the Subsidiary Guarantee
of each Guarantor shall be subordinated to the prior payment in full of all
Senior Debt (as defined in the Indenture) of that Guarantor (in the same manner
and to the same extent that the Notes are subordinated to Senior Debt), which
shall include all guarantees of Senior Debt.

                  Notwithstanding the foregoing, in the event that the
Subsidiary Guarantee of any Guarantor would constitute or result in a violation
of any applicable fraudulent conveyance or similar law of any relevant
jurisdiction, the liability of such Guarantor under its Subsidiary Guarantee
shall be reduced to the maximum amount permissible under such fraudulent
conveyance or similar law.

                  No past, present or future director, officer, employee, agent,
incorporator, stockholder or agent of any Subsidiary of the Company, as such,
shall have any liability for any Obligations of the Company or any Subsidiary of
the Company under the Notes, any Subsidiary Guarantee, the Indenture, any
supplemental indenture delivered pursuant to the Indenture by such Guarantor, or
for any claim based on, in respect of or by reason of such Obligations or their
creation. Each Holder by accepting a Note waives and releases all such
liability.

                  The Subsidiary Guarantee shall be binding upon each Guarantor
and its successors and assigns and shall inure to the benefit of the successors
and assigns of the Trustee and the Holders and, in the event of any transfer or
assignment of rights by any Holder or the Trustee, the rights and privileges
herein conferred upon that party shall automatically extend to and be vested in
such transferee or assignee, all subject to the terms and conditions hereof.

                  The Subsidiary Guarantee shall not be valid or obligatory for
any purpose until the certificate of authentication on the Note upon which the
Subsidiary Guarantee is noted has been executed by the Trustee under the
Indenture by the manual signature of one of its

                                      F-1
<PAGE>

authorized officers. Capitalized terms used herein have the meaning assigned to
them in the Indenture.

                  IN WITNESS WHEREOF, the Guarantors hereto have caused this
Notation on Senior Subordinated Note to be duly executed, all as of the date
first above written.

Dated:  ______________, ______

                                        GUARANTEEING SUBSIDIARIES:

                                        [EXISTING GUARANTORS]
                                        [ADDITIONAL GUARANTORS]

                                        Dated:  ______________, ______

                                      F-2<PAGE>

                                                                     EXHIBIT 4.4
                                                                  EXECUTION COPY

================================================================================

                                  A/B EXCHANGE
                          REGISTRATION RIGHTS AGREEMENT

                            Dated as of May 21, 2003

                                  by and among

                         L-3 COMMUNICATIONS CORPORATION

               THE GUARANTORS LISTED ON THE SIGNATURE PAGES HERETO

                                       AND

                              LEHMAN BROTHERS INC.

                        MORGAN STANLEY & CO. INCORPORATED

                         BANC OF AMERICA SECURITIES LLC

                                       and

                         CREDIT SUISSE FIRST BOSTON LLC

================================================================================

<PAGE>

                   A/B EXCHANGE REGISTRATION RIGHTS AGREEMENT

         This Registration Rights Agreement (this "Agreement") is made and
entered into as of May 21, 2003 by and among L-3 Communications Corporation, a
Delaware corporation (the "Company") the guarantors listed on the signature
pages hereto (collectively, the "Existing Guarantors"), and Lehman Brothers
Inc., Morgan Stanley & Co. Incorporated, Banc of America Securities LLC and
Credit Suisse First Boston LLC, as representatives of the several initial
purchasers (the "Initial Purchasers") named in Schedule 1 to the Purchase
Agreement (as defined below), each of whom has agreed to purchase the Company's
6-1/8% Senior Subordinated Notes due 2013 (the "Series A Notes") pursuant to the
Purchase Agreement (as defined below).

         This Agreement is made pursuant to the Purchase Agreement, dated as of
May 14, 2003 (the "Purchase Agreement"), by and among the Company, the Existing
Guarantors and the Initial Purchasers. In order to induce the Initial Purchasers
to purchase the Series A Notes, the Company and the Existing Guarantors have
agreed to provide the registration rights set forth in this Agreement. The
execution and delivery of this Agreement is a condition to the obligations of
the Initial Purchasers set forth in Section 3 of the Purchase Agreement.

         The parties hereby agree as follows:

SECTION 1 DEFINITIONS

         As used in this Agreement, the following capitalized terms shall have
the following meanings:

         Act:  The Securities Act of 1933, as amended.

         Additional Guarantor: Any subsidiary of the Company that executes a
Subsidiary Guarantee under the Indenture after the date of this Agreement.

         Broker-Dealer: Any broker or dealer registered under the Exchange Act.

         Broker-Dealer Transfer Restricted Securities: Series B Notes (including
the Subsidiary Guarantees) that are acquired by a Restricted Broker-Dealer for
its own account as a result of market-making activities or other trading
activities.

         Closing Date: The date of this Agreement.

         Commission: The Securities and Exchange Commission.

         Consummate: A Registered Exchange Offer shall be deemed "Consummated"
for purposes of this Agreement upon the occurrence of (i) the filing and
effectiveness under the Act of the Exchange Offer Registration Statement
relating to the Series B Notes to be issued in the Exchange Offer, (ii) the
maintenance of such Registration Statement continuously effective and the
keeping of the Exchange Offer open for a period not less than the minimum period
required pursuant to Section 3(b) hereof and (iii) the delivery by the Company
to the Registrar under the

<PAGE>

Indenture of Series B Notes in the same aggregate principal amount as the
aggregate principal amount of Series A Notes that were tendered by Holders
thereof pursuant to the Exchange Offer.

         Damages Payment Date: With respect to the Series A Notes, each Interest
Payment Date.

         Effectiveness Target Date: As defined in Section 5.

         Exchange Act: The Securities Exchange Act of 1934, as amended.

         Exchange Offer: The registration by the Company under the Act of the
Series B Notes (including the Subsidiary Guarantees) pursuant to a Registration
Statement pursuant to which the Company offers the Holders of all outstanding
Transfer Restricted Securities the opportunity to exchange all such outstanding
Transfer Restricted Securities held by such Holders for Series B Notes and
registered Subsidiary Guarantees in an aggregate principal amount equal to the
aggregate principal amount of the Transfer Restricted Securities tendered in
such exchange offer by such Holders.

         Exchange Offer Registration Statement: The Registration Statement
relating to the Exchange Offer, including the related Prospectus.

         Exempt Resales: The transactions in which the Initial Purchasers
propose to sell the Series A Notes to (i) certain "qualified institutional
buyers," as such term is defined in Rule 144A under the Act, (ii) to certain
institutional "accredited investors," as such term is defined in Rule 501(a)(1),
(2), (3) and (7) under the Act ("Accredited Institutions") and (iii) outside the
United States to Persons other than U.S. Persons in offshore transactions
meeting the requirements of rule 904 of Regulation S under the Act.

         Guarantors: The Additional Guarantors and the Existing Guarantors.

         Holders:  As defined in Section 2 hereof.

         Indenture: The Indenture, dated as of the date hereof, among the
Company, the Existing Guarantors and The Bank of New York, as trustee (the
"Trustee"), pursuant to which the Notes are to be issued, as such Indenture is
amended or supplemented from time to time in accordance with the terms thereof.

         Initial Purchasers:  As defined in the preamble hereto.

         Interest Payment Date:  As defined in the Notes.

         Market-Maker Prospectus: As defined in Section 4 hereof.

         NASD:  National Association of Securities Dealers, Inc.

         Notes:  The Series A Notes and the Series B Notes.

         Offering Memorandum:  As defined in the Purchase Agreement.

                                       2

<PAGE>

         Person: An individual, partnership, corporation, trust or
unincorporated organization, or a government or agency or political subdivision
thereof.

         Prospectus: The prospectus included in a Registration Statement
including, without limitation, a Market-Maker Prospectus, as amended or
supplemented by any prospectus supplement and by all other amendments thereto,
including post-effective amendments, and all material incorporated by reference
into such Prospectus.

         Record Holder: With respect to any Damages Payment Date relating to
Notes, each Person who is a Holder of Notes on the record date with respect to
the Interest Payment Date on which such Damages Payment Date shall occur.

         Registration Default:  As defined in Section 5 hereof.

         Registrar: As defined in the Indenture.

         Registration Statement: Any registration statement of the Company
relating to (a) an offering of Series B Notes pursuant to an Exchange Offer or
(b) the registration for resale of Transfer Restricted Securities pursuant to
the Shelf Registration Statement, which is filed pursuant to the provisions of
this Agreement including the registration for resale of Broker-Dealer Transfer
Restricted Securities, in each case including the Prospectus included therein,
all amendments and supplements thereto (including post-effective amendments) and
all exhibits and material incorporated by reference therein.

         Restricted Broker-Dealer: Any Broker-Dealer that is an affiliate of the
Company that holds Broker-Dealer Transfer Restricted Securities.

         Series B Notes: The Company's 6-1/8% Senior Subordinated Notes due 2013
to be issued pursuant to the Indenture in the Exchange Offer.

         Shelf Filing Deadline:  As defined in Section 4 hereof.

         Shelf Registration Statement:  As defined in Section 4 hereof.

         Subsidiary Guarantee: The Guarantee by a Guarantor of the Company's
obligations under the Notes and Indenture.

         TIA: The Trust Indenture Act of 1939 (15 U.S.C. Section 77aaa-77bbbb)
as in effect on the date of the Indenture.

         Transfer Restricted Securities: Each Note (including the Subsidiary
Guarantees), until the earliest to occur of (a) the date on which such Note is
exchanged by a person other than a Broker-Dealer for a Series B Note in the
Exchange Offer, (b) following the exchange by a Broker-Dealer in the Exchange
Offer of a Note for a Series B Note, the date on which such Series B Note is
sold to a purchaser who receives from such Broker-Dealer on or prior to the date
of such sale a copy of the Prospectus contained in the Exchange Offer
Registration Statement, (c) the date on which such Note (including the
Subsidiary Guarantees) is effectively registered under the Act and disposed of
in accordance with the Shelf Registration Statement or (d) the date on

                                        3
<PAGE>

which such Note (including the Subsidiary Guarantees) is distributed to the
public pursuant to Rule 144 under the Act.

         Underwritten Registration or Underwritten Offering: A registration in
which securities of the Company are sold to an underwriter for reoffering to the
public.

SECTION 2 SECURITIES SUBJECT TO THIS AGREEMENT

         (a) Transfer Restricted Securities and Broker-Dealer Transfer
Restricted Securities. The securities entitled to the benefits of this Agreement
are the Transfer Restricted Securities and Broker-Dealer Transfer Restricted
Securities.

         (b) Holders of Transfer Restricted Securities. A Person is deemed to be
a holder of Transfer Restricted Securities (each, a "Holder") whenever such
Person owns Transfer Restricted Securities.

         (c) Holders of Broker-Dealer Transfer Restricted Securities. A
Restricted Broker-Dealer is deemed to be a holder of Broker-Dealer Transfer
Restricted Securities (each, a "Holder") whenever such Restricted Broker-Dealer
owns Broker-Dealer Transfer Restricted Securities.

SECTION 3 REGISTERED EXCHANGE OFFER

         (a) Unless the Exchange Offer shall not be permissible under applicable
law or Commission policy (after the procedures set forth in Section 6(a) below
have been complied with), the Company and the Guarantors shall (i) cause to be
filed with the Commission as promptly as practicable after the Closing Date, but
in no event later than 90 days after the Closing Date, a Registration Statement
under the Act relating to the Series B Notes (including the Subsidiary
Guarantees) and the Exchange Offer, (ii) use all commercially reasonable efforts
to cause such Registration Statement to be declared effective by the Commission
as promptly as practicable, but in no event later than 180 days after the
Closing Date (which 180-day period shall be extended for a number of days equal
to the number of business days, if any, the Commission is officially closed
during such period), (iii) in connection with the foregoing, file (A) all
pre-effective amendments to such Registration Statement as may be necessary in
order to cause such Registration Statement to become effective, (B) if
applicable, a post-effective amendment to such Registration Statement pursuant
to Rule 430A under the Act and (C) cause all necessary filings in connection
with the registration and qualification of the Series B Notes (including the
Subsidiary Guarantees) to be made under the Blue Sky laws of such jurisdictions
as are necessary to permit Consummation of the Exchange Offer and (iv) upon the
effectiveness of such Registration Statement, commence the Exchange Offer. The
Exchange Offer shall be on the appropriate form permitting registration of the
Series B Notes (including the Subsidiary Guarantees) to be offered in exchange
for the Transfer Restricted Securities and to permit resales of Notes held by
Broker-Dealers as contemplated by Section 3(c) below.

         (b) The Company and the Guarantors shall cause the Exchange Offer
Registration Statement to be effective continuously and shall keep the Exchange
Offer open for a period of not less than the minimum period required under
applicable federal and state securities laws to Consummate the Exchange Offer;
provided, however, that in no event shall such period be less than 20 business
days. The Company and the Guarantors shall cause the Exchange Offer to

                                       4
<PAGE>

comply with all applicable federal and state securities laws. No securities
other than the Notes (including the Subsidiary Guarantees) shall be included in
the Exchange Offer Registration Statement. The Company and the Guarantors shall
use all commercially reasonable efforts to cause the Exchange Offer to be
Consummated on the earliest practicable date after the Exchange Offer
Registration Statement has become effective, but in no event later than 30
business days thereafter.

         (c) The Company and the Guarantors shall indicate in a "Plan of
Distribution" section contained in the Prospectus contained in the Exchange
Offer Registration Statement that any Broker-Dealer who owns Series A Notes that
are Transfer Restricted Securities and that were acquired for its own account as
a result of market-making activities or other trading activities (other than
Transfer Restricted Securities acquired directly from the Company), may exchange
such Series A Notes pursuant to the Exchange Offer; however, such Broker-Dealer
may be deemed to be an "underwriter" within the meaning of the Act and must,
therefore, deliver a Prospectus meeting the requirements of the Act in
connection with any resales of the Series B Notes received by such Broker-Dealer
in the Exchange Offer, which Prospectus delivery requirement may be satisfied by
the delivery by such Broker-Dealer of the Prospectus contained in the Exchange
Offer Registration Statement. Such "Plan of Distribution" section shall also
contain all other information with respect to such resales by Broker-Dealers
that the Commission may require in order to permit such resales pursuant
thereto, but such "Plan of Distribution" shall not name any such Broker-Dealer
or disclose the amount of Notes held by any such Broker-Dealer except to the
extent required by the Commission.

         The Company and the Guarantors shall use all commercially reasonable
efforts to keep the Exchange Offer Registration Statement continuously
effective, supplemented and amended as required by the provisions of Section
6(d) below to the extent necessary to ensure that it is available for resales of
Notes acquired by Broker-Dealers for their own accounts as a result of
market-making activities or other trading activities, and to ensure that it
conforms with the requirements of this Agreement, the Act and the policies,
rules and regulations of the Commission as announced from time to time, for a
period of 180 days from the date on which the Exchange Offer Registration
Statement is declared effective or such shorter period that will terminate when
all Notes covered by the Exchange Offer Registration Statement have been
exchanged in the Exchange Offer.

         The Company and the Guarantors shall provide sufficient copies of the
latest version of such Prospectus to Broker-Dealers promptly upon request at any
time during such 180 day period in order to facilitate such resales.

SECTION 4 SHELF REGISTRATION; MARKET-MAKER PROSPECTUS

         (a) Shelf Registration. If (i) the Company and the Guarantors are not
required to file the Exchange Offer Registration Statement or permitted to
Consummate the Exchange Offer because the Exchange Offer is not permitted by
applicable law or Commission policy (after the procedures set forth in Section
6(a) below have been complied with) or (ii) any Holder of Transfer Restricted
Securities that is a "qualified institutional buyer," as such term is defined in
Rule 144A under the Act or an institutional "accredited investor," as such term
is defined in Rule 501(a)(1), (2), (3) and (7) under the Act shall notify the
Company prior to the 20th day following

                                       5
<PAGE>

the Consummation of the Exchange Offer that such Holder alone or together with
holders who hold in the aggregate at least $1.0 million in principal amount of
Series A Notes (A) is prohibited by applicable law or Commission policy from
participating in the Exchange Offer, or (B) may not resell the Series B Notes
acquired by it in the Exchange Offer to the public without delivering a
prospectus and that the Prospectus contained in the Exchange Offer Registration
Statement is not appropriate or available for such resales by such Holder, or
(C) is a Broker-Dealer and holds Series A Notes acquired directly from the
Company or an affiliate of the Company, the Company and the Guarantors shall:

                  (i) cause to be filed with the Commission a shelf Registration
         Statement pursuant to Rule 415 under the Act, which may be an amendment
         to the Exchange Offer Registration Statement (in either event, the
         "Shelf Registration Statement") on or prior to the earliest to occur of
         (A) the 30th day after the date on which the Company determines that it
         is not required to file the Exchange Offer Registration Statement, or
         permitted to Consummate the Exchange Offer and (B) the 30th day after
         the date on which the Company receives notice from a Holder of Transfer
         Restricted Securities as contemplated by clause (ii) of paragraph (a)
         above (such earliest date being the "Shelf Filing Deadline"), which
         Shelf Registration Statement shall provide for resales of all Transfer
         Restricted Securities the Holders of which shall have provided the
         information required pursuant to Section 4(b) hereof; and

                  (ii) use all commercially reasonable efforts to cause such
         Shelf Registration Statement to be declared effective by the Commission
         on or before the 90th day after the Shelf Filing Deadline.

The Company and the Guarantors shall use all commercially reasonable efforts to
keep such Shelf Registration Statement continuously effective, supplemented and
amended as required by the provisions of Sections 6(b) and (d) hereof to the
extent necessary to ensure that it is available for resales of Notes by the
Holders of Transfer Restricted Securities entitled to the benefit of this
Section 4(a), and to ensure that it conforms with the requirements of this
Agreement, the Act and the policies, rules and regulations of the Commission as
announced from time to time, for a period of at least two years following the
Closing Date or such shorter period that will terminate when all Notes covered
by the Shelf Registration Statement have been sold pursuant to the Shelf
Registration Statement or become eligible for resale pursuant to Rule 144
without volume or other restrictions.

         (b) Provision by Holders of Certain Information in Connection with the
Shelf Registration Statement. No Holder of Transfer Restricted Securities may
include any of its Transfer Restricted Securities in any Shelf Registration
Statement pursuant to this Agreement unless and until such Holder furnishes to
the Company in writing, within 10 business days after receipt of a request
therefor, such information as the Company may reasonably request for use in
connection with any Shelf Registration Statement or Prospectus or preliminary
Prospectus included therein. No Holder of Transfer Restricted Securities shall
be entitled to additional amounts pursuant to Section 5 hereof unless and until
such Holder shall have used its best efforts to provide all such reasonably
requested information. Each Holder as to which any Shelf Registration Statement
is being effected agrees to furnish promptly to the Company all

                                       6
<PAGE>

information required to be disclosed in order to make the information previously
furnished to the Company by such Holder not materially misleading.

         (c) Market-Maker Prospectus. The Company and the Guarantors acknowledge
that any Restricted Broker-Dealer holding Broker-Dealer Transfer Restricted
Securities may not resell such Broker-Dealer Transfer Restricted Securities
without delivering a Prospectus. Consequently, on the date that the Exchange
Offer Registration Statement is filed with the Commission, the Company and the
Guarantors shall file a Registration Statement (which may be the Exchange Offer
Registration Statement or the Shelf Registration Statement if permitted by the
rules and regulations of the Commission) and shall use all commercially
reasonable efforts to cause such Registration Statement to be declared effective
by the Commission on or prior to the Consummation of the Exchange Offer. The
Company and the Guarantors shall use all commercially reasonable efforts to keep
such Registration Statement continuously effective, supplemented and amended as
required by the provisions of Sections 6(c) and (d) hereof to the extent
necessary to ensure that it is available for resales of Broker-Dealer Transfer
Restricted Securities by Restricted Broker-Dealers, and to ensure that it
conforms with the requirements of this Agreement, the Act and the policies,
rules and regulations of the Commission as announced from time to time, until
such time as all Restricted Broker-Dealers determine in their reasonable
judgment that they are no longer required to deliver a Prospectus in connection
with sales of Broker-Dealer Transfer Restricted Securities. The Prospectus
included in such Registration Statement is referred to in this Agreement as a
"Market-Maker Prospectus."

SECTION 5 ADDITIONAL AMOUNTS

         If (i) any of the Registration Statements required by this Agreement is
not filed with the Commission on or prior to the date specified for such filing
in sections 3(a), 4(a), and 4(c), as applicable, (ii) any of such required
Registration Statements has not been declared effective by the Commission on or
prior to the date specified for such effectiveness in sections 3(a), 4(a), and
4(c), as applicable, (the "Effectiveness Target Date"), (iii) the Exchange Offer
has not been Consummated within 30 business days after the Effectiveness Target
Date with respect to the Exchange Offer Registration Statement, or (iv) any
Registration Statement required by this Agreement is filed and declared
effective but shall thereafter cease to be effective or fail to be usable for
its intended purpose without being succeeded within five business days by a
post-effective amendment to such Registration Statement that cures such failure
and that is itself immediately declared effective (each such event referred to
in clauses (i) through (iv), a "Registration Default"), the Company and the
Guarantors jointly and severally agree to pay additional amounts to each Holder
of Transfer Restricted Securities with respect to the first 90-day period
immediately following the occurrence of such Registration Default, in an amount
equal to $.05 per week per $1,000 principal amount of Transfer Restricted
Securities held by such Holder for each week or portion thereof that the
Registration Default continues. The amount of the additional amounts shall
increase by an additional $.05 per week per $1,000 in principal amount of
Transfer Restricted Securities with respect to each subsequent 90-day period
until all Registration Defaults have been cured, up to a maximum amount of
additional amounts of $.50 per week per $1,000 principal amount of Transfer
Restricted Securities. The Company shall in no event be required to pay
additional amounts for more than one Registration Default at any given time. All
accrued additional amounts shall be paid to Record Holders by the Company and
the Guarantors by wire transfer of immediately available funds or by federal
funds check on

                                       7
<PAGE>

each Damages Payment Date, as provided in the Indenture. Following the cure of
all Registration Defaults relating to any particular Transfer Restricted
Securities, the accrual of additional amounts with respect to such Transfer
Restricted Securities will cease.

         All payment obligations of the Company and the Guarantors set forth in
the preceding paragraph that are outstanding with respect to any Transfer
Restricted Security at the time such security ceases to be a Transfer Restricted
Security shall survive until such time as all such payment obligations with
respect to such Security shall have been satisfied in full provided, however,
that the additional amounts shall cease to accrue on the day immediately prior
to the date such Transfer Restricted Securities cease to be Transfer Restricted
Securities.

SECTION 6 REGISTRATION PROCEDURES

         (a) Exchange Offer Registration Statement. In connection with the
Exchange Offer, the Company and the Guarantors shall comply with all of the
provisions of Section 6(d) below, shall use all commercially reasonable efforts
to effect such exchange to permit the sale of Transfer Restricted Securities
being sold in accordance with the intended method or methods of distribution
thereof, and shall comply with all of the following provisions:

                  (i) If in the reasonable opinion of counsel to the Company and
         the Guarantors there is a question as to whether the Exchange Offer is
         permitted by applicable law, the Company and the Guarantors hereby
         agree to seek a no-action letter or other favorable decision from the
         Commission allowing the Company and the Guarantors to Consummate an
         Exchange Offer for such Series A Notes. The Company and the Guarantors
         hereby agree to pursue the issuance of such a decision to the
         Commission staff level but shall not be required to take commercially
         unreasonable action to effect a change of Commission policy. The
         Company and the Guarantors hereby agree however, to (A) participate in
         telephonic conferences with the Commission, (B) deliver to the
         Commission staff an analysis prepared by counsel to the Company and
         the Guarantors setting forth the legal bases, if any, upon which such
         counsel has concluded that such an Exchange Offer should be permitted
         and (C) diligently pursue a resolution (which need not be favorable)
         by the Commission staff of such submission.

                  (ii) As a condition to its participation in the Exchange Offer
         pursuant to the terms of this Agreement, each Holder of Transfer
         Restricted Securities shall furnish, upon the request of the Company,
         prior to the Consummation thereof, a written representation to the
         Company and the Guarantors (which may be contained in the letter of
         transmittal contemplated by the Exchange Offer Registration Statement)
         to the effect that (A) it is not an affiliate of the Company, (B) it
         is not engaged in, and does not intend to engage in, and has no
         arrangement or understanding with any person to participate in, a
         distribution of the Series B Notes to be issued in the Exchange Offer
         and (C) it is acquiring the Series B Notes in its ordinary course of
         business. In addition, all such Holders of Transfer Restricted
         Securities shall otherwise cooperate in the Company's and the
         Guarantors' preparations for the Exchange Offer. Each Holder hereby
         acknowledges and agrees that any Broker-Dealer and any such Holder
         using the Exchange Offer to participate in a distribution of the
         securities to be acquired in the Exchange Offer (A) could not under
         Commission policy as in effect on the date of this Agreement rely on
         the position of the

                                       8
<PAGE>

         Commission enunciated in Morgan Stanley and Co., Inc. (available June
         5, 1991) and Exxon Capital Holdings Corporation (available May 13,
         1988), as interpreted in the Commission's letter to Shearman &
         Sterling dated July 2, 1993, and similar no-action letters (including
         any no-action letter obtained pursuant to clause (i) above), and (B)
         must comply with the registration and prospectus delivery requirements
         of the Act in connection with a secondary resale transaction and that
         such a secondary resale transaction should be covered by an effective
         Registration Statement containing the selling security holder
         information required by Item 507 or 508, as applicable, of Regulation
         S-K if the resales are of Series B Notes obtained by such Holder in
         exchange for Series A Notes acquired by such Holder directly from the
         Company.

                  (iii) Prior to effectiveness of the Exchange Offer
         Registration Statement, the Company and the Guarantors shall provide a
         supplemental letter to the Commission (A) stating that the Company and
         the Guarantors are registering the Exchange Offer in reliance on the
         position of the Commission enunciated in Exxon Capital Holdings
         Corporation (available May 13, 1988), Morgan Stanley and Co., Inc.
         (available June 5, 1991) and, if applicable, any no-action letter
         obtained pursuant to clause (i) above and (B) including a
         representation that neither the Company nor any Guarantor has entered
         into any arrangement or understanding with any Person to distribute
         the Series B Notes to be received in the Exchange Offer and that, to
         the best of the Company's and each Guarantor's information and belief,
         each Holder participating in the Exchange Offer is acquiring the
         Series B Notes in its ordinary course of business and has no
         arrangement or understanding with any Person to participate in the
         distribution of the Series B Notes received in the Exchange Offer.

         (b) Shelf Registration Statement. In connection with the Shelf
Registration Statement, the Company and the Guarantors shall comply with all the
provisions of Section 6(d) below and shall use all commercially reasonable
efforts to effect such registration to permit the sale of the Transfer
Restricted Securities being sold in accordance with the intended method or
methods of distribution thereof, and pursuant thereto the Company and the
Guarantors will as expeditiously as possible prepare and file with the
Commission a Registration Statement relating to the registration on any
appropriate form under the Act, which form shall be available for the sale of
the Transfer Restricted Securities in accordance with the intended method or
methods of distribution thereof.

         (c) Market-Maker Prospectus. In connection with any Registration
Statement filed pursuant to Section 4(c) of this Agreement, the Company and the
Guarantors will comply with all of the provisions of Section 6(d) below (other
than sub-sections (xiii), (xiv), (xv), (xvii) and (xx)) until such time as all
Restricted Broker-Dealers determine in their reasonable judgment that they are
no longer required to deliver Market-Maker Prospectuses in connection with sales
of Broker-Dealer Transfer Restricted Securities. The Company and the Guarantors
shall use all commercially reasonable efforts to deliver Market-Maker
Prospectuses to all Restricted Broker-Dealers immediately upon the effectiveness
of the Registration Statement and from time to time thereafter upon request, in
such quantities as such Restricted Broker-Dealer shall reasonably require.

                                       9
<PAGE>

         (d) General Provisions. In connection with any Registration Statement
and any Prospectus required by this Agreement to permit the sale or resale of
Transfer Restricted Securities (including, without limitation, any Registration
Statement and the related Prospectus required to permit resales of Notes by
Broker-Dealers) and Broker-Dealer Transfer Restricted Securities, the Company
and the Guarantors shall:

                  (i) use all commercially reasonable efforts to keep such
         Registration Statement continuously effective and provide all
         requisite financial statements (including, if required by the Act or
         any regulation thereunder, financial statements of any Guarantors) for
         the period specified in Section 3 or 4 of this Agreement, as
         applicable; upon the occurrence of any event that would cause any such
         Registration Statement or the Prospectus contained therein (A) to
         contain a material misstatement or omission or (B) not to be effective
         and usable for resale of Transfer Restricted Securities or
         Broker-Dealer Transfer Restricted Securities during the period
         required by this Agreement, the Company and the Guarantors shall file
         promptly an appropriate amendment to such Registration Statement, in
         the case of clause (A), correcting any such misstatement or omission,
         and, in the case of either clause (A) or (B), use all commercially
         reasonable efforts to cause such amendment to be declared effective
         and such Registration Statement and the related Prospectus to become
         usable for their intended purpose(s) as soon as practicable
         thereafter. Notwithstanding the foregoing, at any time after
         Consummation of the Exchange Offer, the Company and the Guarantors may
         allow the Shelf Registration Statement or Market-Maker Prospectus and
         the related Registration Statement to cease to become effective and
         usable if (A) the board of directors of the Company determines in good
         faith that it is in the best interests of the Company not to disclose
         the existence of or facts surrounding any proposed or pending material
         corporate transaction involving the Company and the Guarantors, and
         the Company notifies the Holders within two business days after the
         Board of Directors makes such determination, or (B) the Prospectus
         contained in the Shelf Registration Statement or the Market-Maker
         Prospectus, as the case may be, contains an untrue statement of the
         material fact or omits to state a material fact necessary in order to
         make the statements therein, in light of the circumstances under which
         they were made, not misleading; provided that the two-year period
         referred to in Section 4(a) hereof during which the Shelf Registration
         Statement is required to be effective and usable shall be extended by
         the number of days during which such Registration Statement was not
         effective or usable pursuant to the foregoing provisions;

                 (ii) subject to Section 6(d)(i), prepare and file with the
         Commission such amendments and post-effective amendments to the
         Registration Statement as may be necessary to keep the Registration
         Statement effective for the applicable period set forth in Section 3
         or 4 hereof, as applicable, or such shorter period as will terminate
         when all Transfer Restricted Securities covered by such Registration
         Statement have been sold; cause the Prospectus to be supplemented by
         any required Prospectus supplement, and as so supplemented to be filed
         pursuant to Rule 424 under the Act, and to comply fully with the
         applicable provisions of Rules 424 and 430A under the Act in a timely
         manner; and comply with the provisions of the Act with respect to the
         disposition of all securities covered by such Registration Statement
         during the applicable period in accordance with the intended method or
         methods of distribution by the sellers thereof set forth in such
         Registration Statement or supplement to the Prospectus;

                                       10
<PAGE>

                  (iii) advise the underwriter(s), if any, and selling Holders
         of Transfer Restricted Securities and, following the Consummation of
         the Exchange Offer, Holders of Broker Dealer Transfer Restricted
         Securities, promptly and, if requested by such Persons, to confirm
         such advice in writing, (A) when the Prospectus or any Prospectus
         supplement or post-effective amendment has been filed, and, with
         respect to any Registration Statement or any post-effective amendment
         thereto, when the same has become effective, (B) of any request by the
         Commission for amendments to the Registration Statement or amendments
         or supplements to the Prospectus or for additional information
         relating thereto, (C) of the issuance by the Commission of any stop
         order suspending the effectiveness of the Registration Statement under
         the Act or of the suspension by any state securities commission of the
         qualification of the Transfer Restricted Securities or Broker-Dealer
         Transfer Restricted Securities, as applicable, for offering or sale in
         any jurisdiction, or the initiation of any proceeding for any of the
         preceding purposes and (D) of the existence of any fact or the
         happening of any event that makes any statement of a material fact
         made in the Registration Statement, the Prospectus, any amendment or
         supplement thereto, or any document incorporated by reference therein
         untrue, or that requires the making of any additions to or changes in
         the Registration Statement or the Prospectus in order to make the
         statements therein not misleading. If at any time the Commission shall
         issue any stop order suspending the effectiveness of the Registration
         Statement, or any state securities commission or other regulatory
         authority shall issue an order suspending the qualification or
         exemption from qualification of the Transfer Restricted Securities or
         Broker-Dealer Transfer Restricted Securities, as applicable, under
         state securities or Blue Sky laws, the Company and the Guarantors
         shall use all commercially reasonable efforts to obtain the withdrawal
         or lifting of such order at the earliest possible time;

                  (iv) upon written request, furnish to each of the selling
         Holders of Transfer Restricted Securities or Holders of Broker-Dealer
         Transfer-Restricted Securities and each of the underwriter(s), if any,
         before filing with the Commission, copies of any Registration
         Statement or any Prospectus included therein or any amendments or
         supplements to any such Registration Statement or Prospectus
         (including all documents incorporated by reference after the initial
         filing of such Registration Statement), which documents will be
         subject to the review of such Holders and underwriter(s), if any, for
         a period of at least five business days, and the Company and the
         Guarantors will not file any such Registration Statement or Prospectus
         or any amendment or supplement to any such Registration Statement or
         Prospectus (including all such documents incorporated by reference) if
         a selling Holder of Transfer Restricted Securities or a Holder of
         Broker-Dealer Transfer Restricted Securities, as applicable, covered
         by such Registration Statement or the underwriter(s), if any, shall
         reasonably object within 5 business days after receipt thereof;

                  (v) upon written request, promptly prior to the filing of any
         document that is to be incorporated by reference into a Registration
         Statement or Prospectus, provide copies of such document to the
         selling Holders or the Holders of Broker-Dealer Transfer Restricted
         Securities, as applicable, and to the underwriter(s), if any, make the
         Company's and the Guarantors' representatives available for discussion
         of such document and other customary due diligence matters, and
         include such information in such document prior to the filing thereof
         as such selling Holders or the Holders of

                                       11
<PAGE>

         Broker-Dealer Transfer Restricted Securities, as applicable, or
         underwriter(s), if any, reasonably may request;

                  (vi) in the case of a Shelf Registration Statement, make
         available at reasonable times at the Company's principal place of
         business for inspection by the selling Holders of Transfer Restricted
         Securities, any underwriter participating in any disposition pursuant
         to such Registration Statement, and any attorney or accountant
         retained by such selling Holders or any of the underwriter(s) who
         shall certify to the Company and the Guarantors that they have a
         current intention to sell Transfer Restricted Securities or
         Broker-Dealer Transfer Restricted Securities pursuant to a Shelf
         Registration Statement or Market-Maker Prospectus, and, following the
         Consummation of the Exchange Offer, the Holders of Broker-Dealer
         Transfer Restricted Securities, such financial and other information
         of the Company and the Guarantors as reasonably requested and cause
         the Company's and the Guarantors' officers, directors and employees to
         respond to such inquiries as shall be reasonably necessary, in the
         reasonable judgment of counsel to such Holders, to conduct a
         reasonable investigation; provided, however, that each such party
         shall be required to maintain in confidence and not to disclose to any
         other person any information or records reasonably designated by the
         Company in writing as being confidential, until such time as (A) such
         information becomes a matter of public record (whether by virtue of
         its inclusion in such Registration Statement or otherwise), or (B)
         such person shall be required so to disclose such information pursuant
         to the subpoena or order of any court or other governmental agency or
         body having jurisdiction over the matter (subject to the requirements
         of such order, and only after such person shall have given the Company
         prompt prior written notice of such requirement), or (C) such
         information is required to be set forth in such Registration Statement
         or the Prospectus included therein or in an amendment to such
         Registration Statement or an amendment or supplement to such
         Prospectus in order that such Registration Statement, Prospectus,
         amendment or supplement, as the case may be, does not contain an
         untrue statement of a material fact or omit to state therein a
         material fact required to be stated therein or necessary to make the
         statements therein not misleading;

                  (vii) if requested by any selling Holders of Transfer
         Restricted Securities or Holders of Broker-Dealer Transfer Restricted
         Securities, as applicable, or the underwriter(s), if any, promptly
         incorporate in any Registration Statement or Prospectus, pursuant to a
         supplement or post-effective amendment if necessary, such information
         as such selling Holders and underwriter(s), if any, may reasonably
         request to have included therein, including, without limitation,
         information relating to the "Plan of Distribution" of the Transfer
         Restricted Securities or Broker-Dealer Transfer Restricted Securities,
         as applicable, information with respect to the principal amount of
         Transfer Restricted Securities or Broker-Dealer Transfer Restricted
         Securities, as applicable, being sold to such underwriter(s), the
         purchase price being paid therefor and any other terms of the offering
         of the Transfer Restricted Securities or Broker-Dealer
         Transfer-Restricted Securities, as applicable, to be sold in such
         offering; and make all required filings of such Prospectus supplement
         or post-effective amendment as soon as practicable after the Company
         is notified of the matters to be incorporated in such Prospectus
         supplement or post-effective amendment;

                                       12
<PAGE>

                  (viii) upon request, furnish to each selling Holder of
         Transfer Restricted Securities or Holders of Broker-Dealer Transfer
         Restricted Securities, as applicable, and each of the underwriter(s),
         if any, without charge, at least one copy of the Registration
         Statement, as first filed with the Commission, and of each amendment
         thereto, including all documents incorporated by reference therein and
         all exhibits (including exhibits incorporated therein by reference);

                  (ix) deliver to each selling Holder of Transfer Restricted
          Securities and each of the underwriter(s), if any, and each Holder of
          Broker-Dealer Transfer Restricted Securities, without charge, as many
          copies of the Prospectus (including each preliminary prospectus) and
          any amendment or supplement thereto as such Persons reasonably may
          request; the Company and the Guarantors hereby consent to the use of
          the Prospectus and any amendment or supplement thereto by each of the
          selling Holders and each of the underwriter(s), if any, and each
          Holder of Broker-Dealer Transfer Restricted Securities, in connection
          with the offering and the sale of the Transfer Restricted Securities
          and Broker-Dealer Transfer Restricted Securities, as applicable,
          covered by the Prospectus or any amendment or supplement thereto;

                  (x) enter into such agreements (including an underwriting
         agreement), and make such representations and warranties, and take all
         such other actions in connection therewith in order to expedite or
         facilitate the disposition of the Transfer Restricted Securities and
         Broker-Dealer Transfer Restricted Securities, as applicable, pursuant
         to any Registration Statement contemplated by this Agreement, all to
         such extent as may be requested by the Initial Purchaser or, in the
         case of registration for resale of Transfer Restricted Securities
         pursuant to the Shelf Registration Statement, by any Holder or Holders
         of Transfer Restricted Securities who hold at least 25% in aggregate
         principal amount of such class of Transfer Restricted Securities or,
         in the case of Broker-Dealer Transfer Restricted Securities, by any
         Holder of Broker-Dealer Transfer Restricted Securities; provided,
         that, the Company and the Guarantors shall not be required to enter
         into any such agreement more than once with respect to all of the
         Transfer Restricted Securities and, in the case of a Shelf
         Registration Statement, may delay entering into such agreement if the
         Board of Directors of the Company determines in good faith that it is
         in the best interests of the Company and the Guarantors not to
         disclose the existence of or facts surrounding any proposed or pending
         material corporate transaction involving the Company and the
         Guarantors; and whether or not an underwriting agreement is entered
         into and whether or not the registration is an Underwritten
         Registration, the Company and the Guarantors shall:

                  (A) furnish to the Initial Purchasers, the Holders of Transfer
          Restricted Securities who hold at least 25% in aggregate principal
          amount of such class of Transfer Restricted Securities (in the case of
          a Shelf Registration Statement), each Holder of Broker-Dealer Transfer
          Restricted Securities and each underwriter, if any, in such substance
          and scope as they may request and as are customarily made in
          connection with an offering of debt securities pursuant to a
          Registration Statement (i) upon the effective date of any Registration
          Statement (and if such Registration Statement contemplates an
          Underwritten Offering of Transfer Restricted Securities or
          Broker-Dealer Transfer Restricted Securities, as applicable, upon the
          date of the

                                       13
<PAGE>

          closing under the underwriting agreement related thereto) and (ii)
          upon the filing of any amendment or supplement to any Registration
          Statement or any other document that is incorporated in any
          Registration Statement by reference and includes financial data with
          respect to a fiscal quarter or year:

                     (1) a certificate, dated the date of effectiveness of the
               Shelf Registration Statement signed by (y) the respective
               Chairman of the Board, the respective President or any Vice
               President and (z) the respective Chief Financial Officer of the
               Company and each of the Guarantors confirming, as of the date
               thereof, the matters set forth in paragraph (i) of Section 7 of
               the Purchase Agreement and such other matters as such parties may
               reasonably request;

                     (2) an opinion, dated the date of effectiveness of the
               Shelf Registration Statement, as the case may be, of counsel for
               the Company covering the matters set forth in paragraphs (c), (d)
               and (e) of Section 7 of the Purchase Agreement and such other
               matter as such parties may reasonably request, and in any event
               including a statement to the effect that such counsel has
               participated in conferences with officers and other
               representatives of the Company, representatives of the
               independent public accountants for the Company, the Initial
               Purchasers' representatives and the Initial Purchasers' counsel
               in connection with the preparation of such Registration Statement
               and the related Prospectus and have considered the matters
               required to be stated therein and the statements contained
               therein, although such counsel has not independently verified the
               accuracy, completeness or fairness of such statements; and that
               such counsel advises that, on the basis of the foregoing (relying
               as to materiality to a large extent upon facts provided to such
               counsel by officers and other representatives of the Company and
               without independent check or verification), no facts came to such
               counsel's attention that caused such counsel to believe that the
               applicable Registration Statement, at the time such Registration
               Statement or any post-effective amendment thereto became
               effective, and, in the case of the Exchange Offer Registration
               Statement, as of the date of Consummation, contained an untrue
               statement of a material fact or omitted to state a material fact
               required to be stated therein or necessary to make the statements
               therein not misleading, or that the Prospectus contained in such
               Registration Statement as of its date and, in the case of the
               opinion dated the date of Consummation of the Exchange Offer, as
               of the date of Consummation, contained an untrue statement of a
               material fact or omitted to state a material fact necessary in
               order to make the statements therein, in light of the
               circumstances under which they were made, not misleading. Such
               counsel may state further that such counsel assumes no
               responsibility for, and has not independently verified, the
               accuracy, completeness or fairness of the financial statements,
               notes and schedules and other financial data included in any
               Registration Statement contemplated by this Agreement or the
               related Prospectus; and

                     (3) a customary comfort letter, dated as of the date of
               Consummation of the Exchange Offer or the date of effectiveness
               of the Shelf Registration Statement, as the case may be, from the
               Company's independent accountants, in

                                       14
<PAGE>

               the customary form and covering matters of the type customarily
               covered in comfort letters by underwriters in connection with
               primary underwritten offerings, and affirming the matters set
               forth in the comfort letters delivered pursuant to Section 7 of
               the Purchase Agreement, without exception;

                  (B) set forth in full or incorporated by reference in the
          underwriting agreement, if any, the indemnification provisions and
          procedures of Section 8 hereof with respect to all parties to be
          indemnified pursuant to said Section; and

                  (C) deliver such other documents and certificates as may be
          reasonably requested by such parties to evidence compliance with
          clause (A) above and with any customary conditions contained in the
          underwriting agreement or other agreement entered into by the Company
          and the Guarantors pursuant to this clause (x), if any.

                  (xi) prior to any public offering of Transfer Restricted
         Securities, or Broker-Dealer Transfer Restricted Securities, as
         applicable, cooperate with the selling Holders of Transfer Restricted
         Securities, the Holders of Broker-Dealer Transfer Restricted
         Securities, the underwriter(s), if any, and their respective counsel
         in connection with the registration and qualification of the Transfer
         Restricted Securities or Broker-Dealer Transfer Restricted Securities,
         as applicable, under the securities or Blue Sky laws of such
         jurisdictions as the selling Holders of Transfer Restricted Securities
         or Holders of Broker-Dealer Transfer Restricted Securities or
         underwriter(s) may reasonably request and do any and all other acts or
         things necessary or advisable to enable the disposition in such
         jurisdictions of the Transfer Restricted Securities or Broker-Dealer
         Transfer Restricted Securities, as applicable, covered by the Shelf
         Registration Statement filed pursuant to Section 4 hereof; provided,
         however, that the Company and the Guarantors shall not be required to
         register or qualify as a foreign corporation where it is not now so
         qualified or to take any action that would subject it to the service
         of process in suits or to taxation, other than as to matters and
         transactions relating to the Registration Statement, in any
         jurisdiction where it is not now so subject;

                  (xii) shall issue, upon the request of any Holder of Series A
         Notes covered by the Shelf Registration Statement, Series B Notes,
         having an aggregate principal amount equal to the aggregate principal
         amount of Series A Notes surrendered to the Company by such Holder in
         exchange therefor or being sold by such Holder; such Series B Notes to
         be registered in the name of such Holder or in the name of the
         purchaser(s) of such Notes, as the case may be; in return, the Series
         A Notes held by such Holder shall be surrendered to the Company for
         cancellation;

                  (xiii) cooperate with the selling Holders of Transfer
         Restricted Securities and the underwriter(s), if any, to facilitate
         the timely preparation and delivery of certificates representing
         Transfer Restricted Securities to be sold and not bearing any
         restrictive legends; and enable such Transfer Restricted Securities to
         be in such denominations and registered in such names as the Holders
         or the underwriter(s), if any, may request at least two business days
         prior to any sale of Transfer Restricted Securities made by such
         underwriter(s);

                                       15
<PAGE>

                  (xiv) use all commercially reasonable efforts to cause the
         Transfer Restricted Securities or Broker-Dealer Transfer Restricted
         Securities, as applicable, covered by the Registration Statement to be
         registered with or approved by such other governmental agencies or
         authorities as may be necessary to enable the seller or sellers
         thereof or the underwriter(s), if any, to consummate the disposition
         of such Transfer Restricted Securities, subject to the proviso
         contained in clause (xi) above;

                  (xv) subject to clause (d)(i) above, if any fact or event
         contemplated by clause (d)(iii)(D) above shall exist or have occurred,
         prepare a supplement or post-effective amendment to the Registration
         Statement or related Prospectus or any document incorporated therein
         by reference or file any other required document so that, as
         thereafter delivered to the purchasers of Transfer Restricted
         Securities, or Broker-Dealer Transfer Restricted Securities, as
         applicable, the Prospectus will not contain an untrue statement of a
         material fact or omit to state any material fact required to be stated
         therein or necessary to make the statements therein not misleading;

                  (xvi) provide a CUSIP number for all Transfer Restricted
         Securities not later than the effective date of the Registration
         Statement and provide the Trustee under the Indenture with printed
         certificates for the Transfer Restricted Securities which are in a
         form eligible for deposit with The Depository Trust Company;

                  (xvii) cooperate and assist in any filings required to be made
         with the NASD and in the performance of any due diligence
         investigation by any underwriter (including any "qualified independent
         underwriter") that is required to be retained in accordance with the
         rules and regulations of the NASD;

                  (xviii) otherwise use all commercially reasonable efforts to
         comply with all applicable rules and regulations of the Commission,
         and make generally available to its security holders, as soon as
         practicable, a consolidated earnings statement meeting the
         requirements of Rule 158 (which need not be audited) for the
         twelve-month period (A) commencing at the end of any fiscal quarter in
         which Transfer Restricted Securities are sold to underwriters in a
         firm or best efforts Underwritten Offering or (B) if not sold to
         underwriters in such an offering, beginning with the first month of
         the Company's first fiscal quarter commencing after the effective date
         of the Registration Statement;

                  (xix) cause the Indenture to be qualified under the TIA not
         later than the effective date of the first Registration Statement
         required by this Agreement, and, in connection therewith, cooperate
         with the Trustee and the Holders of Notes to effect such changes to
         the Indenture as may be required for such Indenture to be so qualified
         in accordance with the terms of the TIA; and execute, and use all
         commercially reasonable efforts to cause the Trustee to execute, all
         documents that may be required to effect such changes and all other
         forms and documents required to be filed with the Commission to enable
         such Indenture to be so qualified in a timely manner;

                  (xx) provide promptly to each Holder upon request each
         document filed with the Commission pursuant to the requirements of
         Section 13 and Section 15 of the Exchange Act; and

                                       16
<PAGE>

                  (xxi) so long as any Transfer Restricted Securities remain
         outstanding, cause each Additional Guarantor upon the creation or
         acquisition by the Company of such Additional Guarantor, to execute a
         counterpart to this Agreement in the form attached hereto as Annex A
         and to deliver such counterpart, together with an opinion of counsel
         as to the enforceability thereof against such entity, to the Initial
         Purchasers no later than five business days following the execution
         thereof.

         Each Holder agrees by acquisition of a Transfer Restricted Security or
Broker-Dealer Transfer Restricted Securities, as applicable, that, upon receipt
of any notice from the Company of the existence of any fact of the kind
described in Section 6(d)(iii)(D) hereof, such Holder will forthwith discontinue
disposition and will use its reasonable best efforts to cause any underwriter to
forthwith discontinue disposition of Transfer Restricted Securities or
Broker-Dealer Transfer Restricted Security pursuant to the applicable
Registration Statement until such Holder's receipt of the copies of the
supplemented or amended Prospectus contemplated by Section 6(d)(xv) hereof, or
until it is advised in writing (the "Advice") by the Company that the use of the
Prospectus may be resumed, and has received copies of any additional or
supplemental filings that are incorporated by reference in the Prospectus. If so
directed by the Company, each Holder will deliver to the Company (at the
Company's expense) all copies, other than permanent file copies then in such
Holder's possession, of the Prospectus covering such Transfer Restricted
Securities or Broker-Dealer Transfer Restricted Security, as applicable, that
was current at the time of receipt of such notice. In the event the Company
shall give any such notice, the time period regarding the effectiveness of such
Registration Statement set forth in Section 3 or 4 hereof, as applicable, shall
be extended by the number of days during the period from and including the date
of the giving of such notice pursuant to Section 6(d)(iii)(D) hereof to and
including the date when each selling Holder covered by such Registration
Statement shall have received the copies of the supplemented or amended
Prospectus contemplated by Section 6(d)(xv) hereof or shall have received the
Advice.

         The Company and the Guarantors may require each Holder of Transfer
Restricted Securities or Broker-Dealer Transfer Restricted Securities as to
which any registration is being effected to furnish to the Company such
information regarding such Holder and such Holder's intended method of
distribution of the applicable Transfer Restricted Securities or Broker-Dealer
Transfer Restricted Securities as the Company may from time to time reasonably
request in writing, but only to the extent that such information is required in
order to comply with the Act. Each such Holder agrees to notify the Company as
promptly as practicable of (i) any inaccuracy or change in information
previously furnished by such Holder to the Company or (ii) the occurrence of any
event, in either case, as a result of which any Prospectus relating to such
registration contains or would contain an untrue statement of a material fact
regarding such Holder or such Holder's intended method of distribution of the
applicable Transfer Restricted Securities or Broker-Dealer Transfer Restricted
Securities or omits to state any material fact regarding such Holder or such
Holder's intended method of distribution of the applicable Transfer Restricted
Securities or Broker-Dealer Transfer Restricted Securities required to be stated
therein or necessary to make the statements therein not misleading and promptly
to furnish to the Company any additional information required to correct and
update any previously furnish to the Company any additional information required
to correct and update any previously furnished information or required so that
such Prospectus shall not contain, with respect to such Holder or the
distribution of the applicable Transfer Restricted Securities or Broker-Dealer

                                       17
<PAGE>

Transfer Restricted Securities an untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading.

         Notwithstanding anything herein to the contrary, any party to this
Agreement (and any employee, representative, or other agent of any party to this
Agreement) may disclose to any and all persons, without limitation of any kind,
the U.S. federal income tax treatment and tax structure of the transactions
contemplated by this Agreement (the "Transactions") and all materials of any
kind (including opinions or other tax analyses) that are provided to it relating
to such tax treatment and tax structure; provided, however, that neither party
(nor any employee, representative or other agent thereof) shall disclose any
information (a) that is not relevant to an understanding of the U.S. federal
income tax treatment or tax structure of the Transactions or (b) to the extent
such disclosure could result in a violation of any federal or state securities
laws.

SECTION 7 REGISTRATION EXPENSES

         All expenses incident to the Company's and the Guarantors' performance
of or compliance with this Agreement will be borne by the Company regardless of
whether a Registration Statement becomes effective, including without
limitation: (i) all registration and filing fees and expenses (including filings
made by any Initial Purchaser or Holder with the NASD (and, if applicable, the
fees and expenses of any "qualified independent underwriter" and its counsel
that may be required by the rules and regulations of the NASD)); (ii) all fees
and expenses of compliance with federal securities and state Blue Sky or
securities laws; (iii) all expenses of printing (including printing certificates
for the Series B Notes to be issued in the Exchange Offer and printing of
Prospectuses), messenger and delivery services; (iv) all fees and disbursements
of counsel for the Company and the Guarantors and the Holders of Transfer
Restricted Securities; and (v) all fees and disbursements of independent
certified public accountants of the Company (including the expenses of any
special audit and comfort letters required by or incident to such performance).

         The Company will, in any event, bear its and the Guarantors' internal
expenses (including, without limitation, all salaries and expenses of its
officers and employees performing legal or accounting duties), the expenses of
any annual audit and the fees and expenses of any Person, including special
experts, retained by the Company or the Guarantors.

SECTION 8 INDEMNIFICATION

         (a) The Company and the Guarantors shall, jointly and severally,
indemnify and hold harmless each Holder of Transfer Restricted Securities or
Broker Dealer Transfer Restricted Securities, its officers and employees and
each person, if any, who controls any such Holders, within the meaning of the
Securities Act, from and against any loss, claim, damage or liability, joint or
several, or any action in respect thereof (including, but not limited to, any
loss, claim, damage, liability or action relating to purchases, sales and
registration of Notes), to which that Holder, officer, employee or controlling
person may become subject, under the Securities Act or otherwise, insofar as
such loss, claim, damage, liability or action arises out of, or is based upon,
(i) any untrue statement or alleged untrue statement of a material fact
contained (A) in any Registration Statement or Prospectus or in any amendment or
supplement thereto or (B) in any blue sky application or other document prepared
or executed by the Company or any Guarantor

                                       18
<PAGE>

(or based upon any written information furnished by the Company or any
Guarantor) specifically for the purpose of qualifying any or all of the Notes
under the securities laws of any state or other jurisdiction (any such
application, document or information being hereinafter called a "Blue Sky
Application"), (ii) the omission or alleged omission to state in any
Registration Statement or Prospectus, or in any amendment or supplement thereto,
or in any Blue Sky Application any material fact required to be stated therein
or necessary to make the statements therein not misleading or (iii) any act or
failure to act or any alleged act or failure to act by any Holder in connection
with, or relating in any manner to, the Notes or the offering contemplated
hereby, and which is included as part of or referred to in any loss, claim,
damage, liability or action arising out of or based upon matters covered by
clause (i) or (ii) above (provided that the Company and the Guarantors shall not
be liable under this clause (iii) to the extent that it is determined in a final
judgment by a court of competent jurisdiction that such loss, claim, damage,
liability or action resulted directly from any such acts or failures to act
undertaken or omitted to be taken by such Holder through its gross negligence or
willful misconduct), and shall reimburse each Holder and each such officer,
employee or controlling person promptly upon demand for any legal or other
expenses reasonably incurred by that Holder, officer, employee or controlling
person in connection with investigating or defending or preparing to defend
against any such loss, claim, damage, liability or action as such expenses are
incurred; provided, however, that the Company and the Guarantors shall not be
liable in any such case to the extent that any such loss, claim, damage,
liability or action arises out of, or is based upon, any untrue statement or
alleged untrue statement or omission or alleged omission made in any
Registration Statement or Prospectus, or in any such amendment or supplement, or
in any Blue Sky Application, in reliance upon and in conformity with written
information concerning such Holder furnished to the Company by or on behalf of
any Holder specifically for inclusion therein. The foregoing indemnity agreement
is in addition to any liability which the Company and the Guarantors may
otherwise have to any Holder or to any officer, employee or controlling person
of that Holder.

         (b) Each Holder, severally and not jointly, shall indemnify and hold
harmless the Company and the Guarantors, their respective officers and
employees, each of their respective directors, and each person, if any, who
controls the Company or the Guarantors within the meaning of the Securities Act,
from and against any loss, claim, damage or liability, joint or several, or any
action in respect thereof, to which the Company, the Guarantors or any such
director, officer or controlling person may become subject, under the Securities
Act or otherwise, insofar as such loss, claim, damage, liability or action
arises out of, or is based upon, (i) any untrue statement or alleged untrue
statement of a material fact contained (A) in any Registration Statement or
Prospectus, or in any amendment or supplement thereto, or (B) in any Blue Sky
Application or (ii) the omission or alleged omission to state in any
Registration Statement or Prospectus, or in any amendment or supplement thereto,
or in any Blue Sky Application any material fact required to be stated therein
or necessary to make the statements therein not misleading, but in each case
only to the extent that the untrue statement or alleged untrue statement or
omission or alleged omission was made in reliance upon and in conformity with
written information concerning such Holders furnished to the Company by or on
behalf of that Holder specifically for inclusion therein, and shall reimburse
the Company, the Guarantors and any such director, officer or controlling person
for any legal or other expenses reasonably incurred by the Company, the
Guarantors or any such director, officer or controlling person in connection
with investigating or defending or preparing to defend against any such loss,
claim,

                                       19
<PAGE>

damage, liability or action as such expenses are incurred. The foregoing
indemnity agreement is in addition to any liability which any Holder may
otherwise have to the Company, the Guarantors or any such director, officer,
employee or controlling person. The Company and the Guarantors shall be entitled
to receive indemnities from underwriters, selling brokers, dealer managers and
similar securities industry professionals participating in the distribution of
such Registrable Securities to the same extent as provided above with respect to
information or affidavit furnished in writing by such Persons as provided
specifically for in any Prospectus or Registration Statement.

         (c) Promptly after receipt by an indemnified party under this Section 8
of notice of any claim or the commencement of any action, the indemnified party
shall, if a claim in respect thereof is to be made against the indemnifying
party under this Section 8, notify the indemnifying party in writing of the
claim or the commencement of that action; provided, however, that the failure to
notify the indemnifying party shall not relieve it from any liability which it
may have under this Section 8 except to the extent it has been materially
prejudiced by such failure and, provided further, that the failure to notify the
indemnifying party shall not relieve it from any liability which it may have to
an indemnified party otherwise than under this Section 8. If any such claim or
action shall be brought against an indemnified party, and it shall notify the
indemnifying party thereof, the indemnifying party shall be entitled to
participate therein and, to the extent that it wishes, jointly with any other
similarly notified indemnifying party, to assume the defense thereof with
counsel reasonably satisfactory to the indemnified party. After notice from the
indemnifying party to the indemnified party of its election to assume the
defense of such claim or action, the indemnifying party shall not be liable to
the indemnified party under this Section 8 for any legal or other expenses
subsequently incurred by the indemnified party in connection with the defense
thereof other than reasonable costs of investigation; provided, however, any
indemnified party shall have the right to employ separate counsel in any such
action and to participate in the defense thereof but the fees and expenses of
such counsel shall be at the expense of the indemnified party unless (i) the
employment thereof has been specifically authorized by the indemnifying party in
writing, (ii) such indemnified party shall have been advised by such counsel
that there may be one or more legal defenses available to it which are different
from or additional to those available to the indemnifying party and in the
reasonable judgment of such counsel it is advisable for such indemnified party
to employ separate counsel or (iii) the indemnifying party has failed to assume
the defense of such action and employ counsel reasonably satisfactory to the
indemnified party, in which case, if such indemnified party notifies the
indemnifying party in writing that it elects to employ separate counsel at the
expense of the indemnifying party, the indemnifying party shall not have the
right to assume the defense of such action on behalf of such indemnified party,
it being understood, however, that the indemnifying party shall not, in
connection with any one such action or separate but substantially similar or
related actions in the same jurisdiction arising out of the same general
allegations or circumstances, be liable for the reasonable fees and expenses of
more than one separate firm of attorneys (in addition to one local counsel) at
any time for all such indemnified parties, which firm shall be designated in
writing by Lehman Brothers Inc., if the indemnified parties under this Section 8
consist of any Initial Purchaser or any of their respective officers, employees
or controlling persons, or by the Company, if the indemnified parties under this
Section consist of the Company, the Guarantors or any of their respective
directors, officers, employees or controlling persons. No indemnifying party
shall (i) without the prior written consent of the indemnified parties (which
consent shall not be unreasonably withheld), settle or

                                       20
<PAGE>

compromise or consent to the entry of any judgment with respect to any pending
or threatened claim, action, suit or proceeding in respect of which
indemnification or contribution may be sought hereunder (whether or not the
indemnified parties are actual or potential parties to such claim or action)
unless such settlement, compromise or consent includes an unconditional release
of each indemnified party from all liability arising out of such claim, action,
suit or proceeding, or (ii) be liable for any settlement of any such action
effected without its written consent (which consent shall not be unreasonably
withheld), but if settled with the consent of the indemnifying party or if there
be a final judgment of the plaintiff in any such action, the indemnifying party
agrees to indemnify and hold harmless any indemnified party from and against any
loss or liability by reason of such settlement or judgment.

         (d) If the indemnification provided for in this Section 8 shall for any
reason be unavailable to or insufficient to hold harmless an indemnified party
under Section 8(a) or 8(b) in respect of any loss, claim, damage or liability,
or any action in respect thereof, referred to therein, then each indemnifying
party shall, in lieu of indemnifying such indemnified party, contribute to the
amount paid or payable by such indemnified party as a result of such loss,
claim, damage or liability, or action in respect thereof, (i) in such proportion
as shall be appropriate to reflect the relative benefits received by the Company
and the Guarantors, on the one hand, and the Holders on the other, from the
offering of the Notes or (ii) if the allocation provided by clause (i) above is
not permitted by applicable law, in such proportion as is appropriate to reflect
not only the relative benefits referred to in clause (i) above but also the
relative fault of the Company and the Guarantors, on the one hand and the
Holders on the other with respect to the statements or omissions which resulted
in such loss, claim, damage or liability, or action in respect thereof, as well
as any other relevant equitable considerations. The relative benefits received
by the Company and the Guarantors, on the one hand and the Holders on the other
with respect to such offering shall be deemed to be in the same proportion as
the total net proceeds from the offering of the Series A Notes purchased under
the Purchase Agreement (before deducting expenses) received by the Company and
the Guarantors, on the one hand, and the total discounts and commissions
received by the Holders with respect to the Series A Notes purchased under this
Agreement, on the other hand, bear to the total gross proceeds from the offering
of the Series A Notes under the Purchase Agreement. The relative fault shall be
determined by reference to whether the untrue or alleged untrue statement of a
material fact or omission or alleged omission to state a material fact relates
to information supplied by the Company, the Guarantors or the Holders, the
intent of the parties and their relative knowledge, access to information and
opportunity to correct or prevent such statement or omission. The Company, the
Guarantors and the Holders agree that it would not be just and equitable if
contributions pursuant to this Section 8(d) were to be determined by pro rata
allocation (even if the Holders were treated as one entity for such purpose) or
by any other method of allocation which does not take into account the equitable
considerations referred to herein. The amount paid or payable by an indemnified
party as a result of the loss, claim, damage or liability, or action in respect
thereof, referred to above in this Section shall be deemed to include, for
purposes of this Section 8(d), any legal or other expenses reasonably incurred
by such indemnified party in connection with investigating or defending any such
action or claim. Notwithstanding the provisions of this Section 8(d), no Holder
shall be required to contribute any amount in excess of the amount by which the
net proceeds received by it in connection with its sale of Notes exceeds the
amount of any damages which such Holder has otherwise paid or become liable to
pay by reason of any untrue or alleged untrue statement or omission or alleged

                                       21
<PAGE>

omission. No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to contribution from
any person who was not guilty of such fraudulent misrepresentation. The Holders'
obligations to contribute as provided in this Section 8(d) are several and not
joint.

SECTION 9 RULE 144A

         The Company and each Guarantor hereby agrees with each Holder of
Transfer Restricted Securities, during any period in which the Company or such
Guarantor is not subject to Section 13 or 15(d) of the Exchange Act within the
two-year period following the Closing Date, and each Holder of Broker-Dealer
Transfer Restricted Securities, for so long as any Broker-Dealer Transfer
Restricted Securities remain outstanding, to make available to any Holder or
beneficial owner of Transfer Restricted Securities or any Holder or
Broker-Dealer Transfer Restricted Securities, in connection with any sale
thereof and any prospective purchaser of such Transfer Restricted Securities
from such Holder or beneficial owner, the information required by Rule
144A(d)(4) under the Act in order to permit resales of such Transfer Restricted
Securities pursuant to Rule 144A.

SECTION 10 PARTICIPATION IN UNDERWRITTEN REGISTRATIONS

         No Holder may participate in any Underwritten Registration hereunder
unless such Holder (a) agrees to sell such Holder's Transfer Restricted
Securities or Broker-Dealer Transfer Restricted Securities, as applicable, on
the basis provided in any underwriting arrangements approved by the Persons
entitled hereunder to approve such arrangements and (b) completes and executes
all reasonable questionnaires, powers of attorney, indemnities, underwriting
agreements, lock-up letters and other documents required under the terms of such
underwriting arrangements.

SECTION 11 SELECTION OF UNDERWRITERS

         The Holders of Transfer Restricted Securities covered by the Shelf
Registration Statement who desire to do so may sell such Transfer Restricted
Securities in an Underwritten Offering at such Holders' expense. In any such
Underwritten Offering, the investment banker or investment bankers and manager
or managers that will administer the offering will be selected by the Holders of
a majority in aggregate principal amount of the Transfer Restricted Securities
included in such offering; provided, that such investment bankers and managers
must be reasonably satisfactory to the Company.

SECTION 12 MISCELLANEOUS

         (a) Remedies. The Company and the Guarantors agree that monetary
damages (including the additional amounts contemplated hereby) would not be
adequate compensation for any loss incurred by reason of a breach by it of the
provisions of this Agreement and hereby agree to waive the defense in any action
for specific performance that a remedy at law would be adequate.

         (b) No Inconsistent Agreements. Neither the Company nor any Guarantor
will, on or after the date of this Agreement, enter into any agreement with
respect to its securities that is

                                       22
<PAGE>

inconsistent with the rights granted to the Holders in this Agreement or
otherwise conflicts with the provisions hereof. Except as disclosed in the
Offering Memorandum or in the documents incorporated therein by reference,
neither the Company nor any Guarantor has previously entered into any agreement
granting any registration rights with respect to its securities to any Person
that is inconsistent with the terms of this Agreement. The rights granted to the
Holders hereunder do not in any way conflict with and are not inconsistent with
the rights granted to the holders of the Company's or any Guarantor's securities
under any agreement in effect on the date hereof.

         (c) Adjustments Affecting the Notes. The Company and the Guarantors
will not take any action, or permit any change to occur, with respect to the
Notes that would materially and adversely affect the ability of the Holders to
Consummate any Exchange Offer.

         (d) Amendments and Waivers. The provisions of this Agreement may not be
amended, modified or supplemented, and waivers or consents to or departures from
the provisions hereof may not be given unless the Company has obtained the
written consent of Holders of a majority of the outstanding principal amount of
Transfer Restricted Securities. Notwithstanding the foregoing, a waiver or
consent to departure from the provisions hereof that relates exclusively to the
rights of Holders whose securities are being tendered pursuant to the Exchange
Offer and that does not affect directly or indirectly the rights of other
Holders whose securities are not being tendered pursuant to such Exchange Offer
may be given by the Holders of a majority of the outstanding principal amount of
Transfer Restricted Securities being tendered or registered.

         (e) Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand-delivery, first-class mail
(registered or certified, return receipt requested), telex, telecopier, or air
courier guaranteeing overnight delivery:

                  (i) if to a Holder, at the address set forth on the records of
         the Registrar under the Indenture, with a copy to the Registrar under
         the Indenture; and

                  (ii)   if to the Company or the Guarantors:

                         L-3 Communications Corporation
                         600 Third Avenue, 34th Floor,
                         New York, New York 10016,
                         Attention: Christopher C. Cambria (Fax: 212-805-5494),

                         With a copy to:

                         Simpson Thacher & Bartlett
                         425 Lexington Avenue
                         New York, NY, 10017
                         Attention: Vincent Pagano Jr. (Fax: 212-455-2502)

         All such notices and communications shall be deemed to have been duly
given: at the time delivered by hand, if personally delivered; five business
days after being deposited in the mail, postage prepaid, if mailed; when
answered back, if telexed; when receipt acknowledged, if telecopied; and on the
next business day, if timely delivered to an air courier guaranteeing overnight
delivery.

                                       23
<PAGE>

         Copies of all such notices, demands or other communications shall be
concurrently delivered by the Person giving the same to the Trustee at the
address specified in the Indenture.

         (f) Successors and Assigns. This Agreement shall inure to the benefit
of and be binding upon the successors and assigns of each of the parties,
including without limitation and without the need for an express assignment,
subsequent Holders or Restricted Broker Dealers; provided, however, that this
Agreement shall not inure to the benefit of or be binding upon a successor or
assign of a Holder unless and to the extent such successor or assign acquired
Transfer Restricted Securities or Broker Dealer Transfer Restricted Securities
from such Holder.

         (g) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

         (h) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

         (i) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

         (j) Severability. In the event that any one or more of the provisions
contained herein, or the application thereof in any circumstance, is held
invalid, illegal or unenforceable, the validity, legality and enforceability of
any such provision in every other respect and of the remaining provisions
contained herein shall not be affected or impaired thereby.

         (k) Entire Agreement. This Agreement together with the other Operative
Documents (as defined in the Purchase Agreement) is intended by the parties as a
final expression of their agreement and intended to be a complete and exclusive
statement of the agreement and understanding of the parties hereto in respect of
the subject matter contained herein. There are no restrictions, promises,
warranties or undertakings, other than those set forth or referred to herein
with respect to the registration rights granted by the Company and the
Guarantors with respect to the Transfer Restricted Securities. This Agreement
supersedes all prior agreements and understandings between the parties with
respect to such subject matter.

                            [Signature pages follow]

                                       24
<PAGE>

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

                         L-3 COMMUNICATIONS CORPORATION

                         By:
                            ----------------------------------------------------
                            Name:  Christopher C. Cambria
                            Title: Senior Vice President, Secretary and General
                                   Counsel

                         GUARANTORS:

                         AMI INSTRUMENTS, INC.
                         APCOM, INC.
                         BROADCAST SPORTS INC.
                         CELERITY SYSTEMS INCORPORATED
                         EER SYSTEMS, INC.
                         ELECTRODYNAMICS, INC.
                         GOODRICH AEROSPACE COMPONENT OVERHAUL
                              & REPAIR, INC.
                         GOODRICH AVIONICS SYSTEMS, INC.
                         GOODRICH FLIGHTSYSTEMS, INC.
                         HENSCHEL, INC.
                         HYGIENETICS ENVIRONMENTAL SERVICES, INC.
                         INTERSTATE ELECTRONICS CORPORATION
                         KDI PRECISION PRODUCTS, INC.
                         L-3 COMMUNICATIONS AIS GP CORPORATION
                         L-3 COMMUNICATIONS ANALYTICS CORPORATION
                         L-3 COMMUNICATIONS ATLANTIC SCIENCE &
                              TECHNOLOGY CORPORATION
                         L-3 COMMUNICATIONS AYDIN CORPORATION
                         L-3 COMMUNICATIONS ESSCO, INC.
                         L-3 COMMUNICATIONS ILEX SYSTEMS, INC.
                         L-3 COMMUNICATIONS IMC CORPORATION
                         L-3 COMMUNICATIONS INTEGRATED SYSTEMS L.P.
                         L-3 COMMUNICATIONS INVESTMENTS, INC.
                         L-3 COMMUNICATIONS SECURITY AND
                              DETECTION SYSTEMS CORPORATION DELAWARE
                         L-3 COMMUNICATIONS SECURITY AND DETECTION SYSTEMS
                              CORPORATION CALIFORNIA
                         L-3 COMMUNICATIONS SPD TECHNOLOGIES, INC.

                                       A-1

                                       25
<PAGE>

                         L-3 COMMUNICATIONS STORM CONTROL SYSTEMS, INC.
                         L-3 COMMUNICATIONS TMA CORPORATION
                         L-3 COMMUNICATIONS WESTWOOD CORPORATION
                         MCTI ACQUISITION CORPORATION
                         MICRODYNE COMMUNICATIONS TECHNOLOGY INCORPORATED
                         MICRODYNE CORPORATION
                         MICRODYNE OUTSOURCING INCORPORATED
                         MPRI, INC.
                         PAC ORD, INC.
                         POWER PARAGON, INC.
                         SHIP ANALYTICS, INC.
                         SHIP ANALYTICS INTERNATIONAL, INC.
                         SHIP ANALYTICS USA, INC.
                         SOUTHERN CALIFORNIA MICROWAVE, INC.
                         SPD ELECTRICAL SYSTEMS, INC.
                         SPD HOLDINGS, INC.
                         SPD SWITCHGEAR, INC.
                         SYCOLEMAN CORPORATION
                         TELOS CORPORATION
                         TROLL TECHNOLOGY CORPORATION
                         WESCAM AIR OPS INC.
                         WESCAM AIR OPS LLC
                         WESCAM HOLDINGS (US) INC.
                         WESCAM INCORPORATED
                         WESCAM LLC
                         WESCAM SONOMA INC.
                         WOLF COACH, INC.
                              as Guarantors

                         By:
                            ----------------------------------------------------
                            Name:  Christopher C. Cambria
                            Title: Vice President and Secretary

                         L-3 COMMUNICATIONS INTEGRATED SYSTEMS L.P.
                            as Guarantor

                         By:  L-3 COMMUNICATIONS AIS GP CORPORATION,
                              as general partner

                         By:
                            ----------------------------------------------------
                            Name:
                            Title:  Authorized Person

                                       2

<PAGE>

LEHMAN BROTHERS INC.
MORGAN STANLEY & CO. INCORPORATED
BANC OF AMERICA SECURITIES LLC
CREDIT SUISSE FIRST BOSTON LLC
BY LEHMAN BROTHERS INC.

By:
   ----------------------------------------
           Authorized Representative

                                       3

<PAGE>

                                                                         ANNEX A
                                                                         -------

                  COUNTERPART TO REGISTRATION RIGHTS AGREEMENT
                  --------------------------------------------

         The undersigned hereby absolutely, unconditionally and irrevocably
agrees (as a "Guarantor") to use all commercially reasonable efforts to include
its Subsidiary Guarantee in any Registration Statement required to be filed by
the Company and the Guarantors pursuant to the Registration Rights Agreement,
dated as of May 21, 2003, (the "Registration Rights Agreement") by and among L-3
Communications Corporation, a Delaware corporation, the guarantors party
thereto, Lehman Brothers Inc., Morgan Stanley & Co. Incorporated, Banc of
America Securities LLC and Credit Suisse First Boston LLC; to use all
commercially reasonable efforts to cause such Registration Statement to become
effective as specified in the Registration Rights Agreement; and to otherwise be
bound by the terms and provisions of the Registration Rights Agreement.

         IN WITNESS WHEREOF, the undersigned has executed this Counterpart as of
_____________.

                                     [NAME]

                                      By:
                                         ---------------------------------
                                         Name:
                                         Title:

                                       4

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