Document:

Exhibit
4.21

AMENDMENT NO. 1 TO PREFERRED
SHARES RIGHTS AGREEMENT

This Amendment No. 1 (“Amendment No. 1”) to the Preferred
Shares Rights Agreement dated as of October 22, 1998 (the “Original Agreement”),
by and between Silicon Valley Bancshares, a California corporation (“California Bancshares”)
and predecessor in interest to Silicon Valley Bancshares, a Delaware
corporation (the “Company”
or “Delaware Bancshares”),
and Norwest Bank Minnesota, N.A., predecessor in interest to Wells Fargo Bank
Minnesota, N.A. (the “Rights
Agent”), is entered into as of November 6, 2003 by and
between the Company and the Rights Agent. 
Each capitalized term not defined herein shall have the meaning ascribed
to such term in the Original Agreement.

WHEREAS, on October 22, 1998, California Bancshares entered into
the Original Agreement with Norwest Bank Minnesota, N.A., predecessor in
interest to the Rights Agent, and declared a dividend of one Preferred Share
Purchase Right (a “California
Bancshares Right”) for each share of California Bancshares
Common Stock outstanding on November 9, 1998;

WHEREAS, on April 23, 1999, in connection with the Company’s
reincorporation into Delaware, California Bancshares was merged with and into
the Company pursuant to which California Bancshares ceased to exist and the
Company continued to operate the business as the surviving corporation (the “Reincorporation”);

WHEREAS, upon the
effectiveness of the Reincorporation, pursuant to the Original Agreement, all
covenants and provisions of the Original Agreement by or for the benefit of
California Bancshares bound and inured to the benefit of the Company, and,
pursuant to the Plan and Agreement of Merger relating to the Reincorporation,
the duties of California Bancshares under the Original Agreement became the
duties of the Company;

WHEREAS, on November 6, the Board of Directors of the Company
confirmed the assumption of the California Bancshares Rights and the Original
Agreement by Delaware Bancshares and authorized amendment and restatement of
Section 1(a) of the Original Agreement to increase from 10% to 15% the
minimum percentage of Common Shares then outstanding that any Person, who or
which, together with all Affiliates and Associates of such Person, shall own to
qualify as an Acquiring Person.

WHEREAS, pursuant to Section 27 of the Original Agreement, the
parties hereto wish to amend and restate Section 1(a) of the Original
Agreement to read in its entirety as set forth herein.

NOW, THEREFORE, in consideration of the promises and the mutual agreements
herein set forth, the parties hereby agree as follows:

1.             Section 1(a)
of the Original Agreement is hereby amended and restated to read in its
entirety as follows:

(a)   “Acquiring Person” shall mean any Person, who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial Owner of 15% or more of the Common Shares then outstanding, but
shall not include the Company, 

 

any Subsidiary of the Company or any employee benefit
plan of the Company or of any Subsidiary of the Company, or any entity holding
Common Shares for or pursuant to the terms of any such plan.  Notwithstanding the foregoing, no Person
shall be deemed to be an Acquiring Person as the result of an acquisition of Common
Shares by the Company which, by reducing the number of shares outstanding,
increases the proportionate number of shares beneficially owned by such Person
to 15% or more of the Common Shares of the Company then outstanding; provided,
however, that if a Person shall become the Beneficial Owner of 15% or
more of the Common Shares of the Company then outstanding by reason of share
purchases by the Company and shall, after such share purchases by the Company,
become the Beneficial Owner of any additional Common Shares of the Company
(other than pursuant to a dividend or distribution paid or made by the Company
on the outstanding Common Shares in Common Shares or pursuant to a split or
subdivision of the outstanding Common Shares), then such Person shall be deemed
to be an Acquiring Person unless upon becoming the Beneficial Owner of such
additional Common Shares of the Company such Person does not beneficially own
15% or more of the Common Shares of the Company then outstanding.  Notwithstanding the foregoing, (i) if
the Company’s Board of Directors determines in good faith that a Person who
would otherwise be an “Acquiring Person,” as defined pursuant to the foregoing
provisions of this paragraph (a), has become such inadvertently
(including, without limitation, because (A) such Person was unaware that
it beneficially owned a percentage of the Common Shares that would otherwise
cause such Person to be an “Acquiring Person,” as defined pursuant to the
foregoing provisions of this paragraph (a), or (B) such Person was
aware of the extent of the Common Shares it beneficially owned but had no
actual knowledge of the consequences of such beneficial ownership under this
Agreement) and without any intention of changing or influencing control of the
Company, and if such Person divested or divests as promptly as practicable a
sufficient number of Common Shares so that such Person would no longer be an
“Acquiring Person,” as defined pursuant to the foregoing provisions of this
paragraph (a), then such Person shall not be deemed to be or to have
become an “Acquiring Person” for any purposes of this Agreement including,
without limitation, Section 1(ii) hereof; and (ii) if, as of the date
hereof, any Person is the Beneficial Owner of 15% or more of the Common Shares
outstanding, such Person shall not be or become an “Acquiring Person,” as
defined pursuant to the foregoing provisions of this paragraph (a), unless
and until such time as such Person shall become the Beneficial Owner of
additional Common Shares (other than pursuant to a dividend or distribution paid
or made by the Company on the outstanding Common Shares in Common Shares or
pursuant to a split or subdivision of the outstanding Common Shares), unless,
upon becoming the Beneficial Owner of such additional Common Shares, such
Person is not then the Beneficial Owner of 15% or more of the Common Shares
then outstanding.

2.             This
Amendment No. 1 shall be deemed to be a contract made under the laws of
the State of Delaware and for all purposes shall be governed by and construed
in accordance with the laws of such State applicable to contracts to be made
and performed entirely within such State.

 

3.             This
Amendment No. 1 may be executed in any number of counterparts and each of
such counterparts shall for all purposes be deemed to be an original, and all
such counterparts shall together constitute but one and the same instrument.

4.             Except
as amended by this Amendment No. 1, the terms and conditions of the
Original Agreement shall remain unchanged, and the Original Agreement shall
remain in full force and effect.

[Remainder of page intentionally left blank.]

 

IN WITNESS WHEEOF, the parties hereto have caused this Amendment
No. 1 to be duly executed and delivered as of the day and year first
written above.

 

	
   

  	
  SILICON VALLEY
  BANCSHARES

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Ken Wilcox

  
	
   

  	
   

  	
  Name:  Ken Wilcox

  
	
   

  	
   

  	
  Title:  Chief Executive Officer

  
	
   

  	
   

  	
   

  
	
   

  	
  WELLS FARGO BANK
  MINNESOTA, N.A.

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Corbin B. Connell

  
	
   

  	
   

  	
  Name:  Corbin B. Connell

  
	
   

  	
   

  	
  Title:  Assistant Vice President<Page>

                                                                     Exhibit 4.1

                                                                  EXECUTION COPY
--------------------------------------------------------------------------------

                             DRS TECHNOLOGIES, INC.

                     AND EACH OF THE GUARANTORS PARTY HERETO

                    6 7/8% SENIOR SUBORDINATED NOTES DUE 2013

                                   ----------

                                    INDENTURE

                          Dated as of October 30, 2003

                                   ----------

                                   ----------

                              THE BANK OF NEW YORK

                                     Trustee

                                   ----------

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

<Page>

                             CROSS-REFERENCE TABLE*

<Table>
<Caption>
      TRUST INDENTURE
      ACT SECTION                                                           INDENTURE SECTION
        <S>                                                                   <C>
        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)..........................................................          13.03
           (c)..........................................................          13.03
        313(a)..........................................................           7.06
           (b)(2).......................................................        7.06; 7.07
           (c)..........................................................           7.06
           (d)..........................................................           7.06
        314(a)..........................................................      4.03;13.02; 13.05
           (c)(1).......................................................          13.04
           (c)(2).......................................................          13.04
           (c)(3).......................................................           N.A.
           (e)..........................................................          13.05
           (f)..........................................................           N.A.
        315(a)..........................................................           7.01
           (b)..........................................................        7.05,13.02
           (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
           (a)(2).......................................................           6.09
           (b)..........................................................           2.04
        318(a)..........................................................           N.A.
           (b)..........................................................           N.A.
           (c)..........................................................          13.01
</Table>

N.A. means not applicable.
* This Cross Reference Table is not part of the Indenture.

<Page>

                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                                 PAGE
   <S>                                                                            <C>
                                     ARTICLE 1.
                            DEFINITIONS AND INCORPORATION
                                    BY REFERENCE

   Section 1.01       Definitions..................................................1
   Section 1.02       Other Definitions...........................................21
   Section 1.03       Incorporation by Reference of Trust Indenture Act...........21
   Section 1.04       Rules of Construction.......................................22

                                     ARTICLE 2.
                                      THE NOTES

   Sectio0n 2.01      Form and Dating.............................................22
   Section 2.02       Execution and Authentication................................23
   Section 2.03       Registrar and Paying Agent..................................23
   Section 2.04       Paying Agent to Hold Money in Trust.........................23
   Section 2.05       Holder Lists................................................24
   Section 2.06       Transfer and Exchange.......................................24
   Section 2.07       Replacement Notes...........................................35
   Section 2.08       Outstanding Notes...........................................36
   Section 2.09       Treasury Notes..............................................36
   Section 2.10       Temporary Notes.............................................36
   Section 2.11       Cancellation................................................36
   Section 2.12       Defaulted Interest..........................................37

                                     ARTICLE 3.
                              REDEMPTION AND PREPAYMENT

   Section 3.01       Notices to Trustee..........................................37
   Section 3.02       Selection of Notes to Be Redeemed or Purchased..............37
   Section 3.03       Notice of Redemption........................................38
   Section 3.04       Effect of Notice of Redemption..............................38
   Section 3.05       Deposit of Redemption or Purchase Price.....................39
   Section 3.06       Notes Redeemed or Purchased 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

   Section 4.01       Payment of Notes............................................42
   Section 4.02       Maintenance of Office or Agency.............................42
   Section 4.03       Reports.....................................................42
   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
   Subsidiaries...................................................................47
</Table>

                                        i
<Page>

<Table>
   <S>                                                                            <C>
   Section 4.09       Incurrence of Indebtedness and Issuance of Preferred Stock..48
   Section 4.10       Asset Sales.................................................51
   Section 4.11       Transactions with Affiliates................................53
   Section 4.12       Liens.......................................................54
   Section 4.13       Business Activities.........................................55
   Section 4.14       Corporate Existence.........................................55
   Section 4.15       Offer to Repurchase Upon Change of Control..................55
   Section 4.16       No Layering of Debt.........................................57
   Section 4.17       Limitation on Sale and Leaseback Transactions...............57
   Section 4.18       Payments for Consent........................................57
   Section 4.19       Additional Subsidiary Guarantees............................57
   Section 4.20       Designation of Restricted and Unrestricted Subsidiaries.....57

                                     ARTICLE 5.
                                     SUCCESSORS

   Section 5.01       Merger, Consolidation, or Sale of Assets....................58
   Section 5.02       Successor Corporation Substituted...........................58

                                     ARTICLE 6.
                                DEFAULTS AND REMEDIES

   Section 6.01       Events of Default...........................................59
   Section 6.02       Acceleration................................................61
   Section 6.03       Other Remedies..............................................61
   Section 6.04       Waiver of Past Defaults.....................................61
   Section 6.05       Control by Majority.........................................61
   Section 6.06       Limitation on Suits.........................................62
   Section 6.07       Rights of Holders of Notes to Receive Payment...............62
   Section 6.08       Collection Suit by Trustee..................................62
   Section 6.09       Trustee May File Proofs of Claim............................62
   Section 6.10       Priorities..................................................63
   Section 6.11       Undertaking for Costs.......................................63

                                     ARTICLE 7.
                                       TRUSTEE

   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 Disclaimer........................................65
   Section 7.05       Notice of Defaults..........................................66
   Section 7.06       Reports by Trustee to Holders of the Notes..................66
   Section 7.07       Compensation and Indemnity..................................66
   Section 7.08       Replacement of Trustee......................................67
   Section 7.09       Successor Trustee by Merger, etc............................68
   Section 7.10       Eligibility; Disqualification...............................68
   Section 7.11       Preferential Collection of Claims Against Company...........68

                                     ARTICLE 8.
                      LEGAL DEFEASANCE AND COVENANT DEFEASANCE

   Section 8.01       Option to Effect Legal Defeasance or Covenant Defeasance....68
</Table>

                                       ii
<Page>

<Table>
   <S>                                                                            <C>
   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

   Section 9.01       Without Consent of Holders of Notes.........................72
   Section 9.02       With Consent of Holders of Notes............................72
   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.
                                    SUBORDINATION

   Section 10.01      Agreement to Subordinate....................................75
   Section 10.02      Liquidation; Dissolution; Bankruptcy........................75
   Section 10.03      Default on Designated Senior Debt...........................75
   Section 10.04      Acceleration of Notes.......................................76
   Section 10.05      When Distribution Must Be Paid Over.........................76
   Section 10.06      Notice by Company...........................................76
   Section 10.07      Subrogation.................................................76
   Section 10.08      Relative Rights.............................................77
   Section 10.09      Subordination May Not Be Impaired by Company................77
   Section 10.10      Distribution or Notice to Representative....................77
   Section 10.11      Rights of Trustee and Paying Agent..........................77
   Section 10.12      Authorization to Effect Subordination.......................78
   Section 10.13      Amendments..................................................78
   Section 10.14      Trustee Not Fiduciary for Holders of Senior Indebtedness....78

                          ARTICLE 11. SUBSIDIARY GUARANTEES

   Section 11.01      Guarantee...................................................78
   Section 11.02      Subordination of Subsidiary Guarantee.......................79
   Section 11.03      Limitation on Guarantor Liability...........................79
   Section 11.04      Execution and Delivery of Subsidiary Guarantee..............80
   Section 11.05      Guarantors May Consolidate, etc., on Certain Terms..........80
   Section 11.06      Releases....................................................81

                                     ARTICLE 12.
                             SATISFACTION AND DISCHARGE

   Section 12.01      Satisfaction and Discharge..................................81
   Section 12.02      Application of Trust Money..................................82
</Table>

                                       iii
<Page>

<Table>
   <S>                                                                            <C>
                                     ARTICLE 13.
                                    MISCELLANEOUS

   Section 13.01      Trust Indenture Act Controls................................83
   Section 13.02      Notices.....................................................83
   Section 13.03      Communication by Holders of Notes with Other Holders
   of Notes.......................................................................84
   Section 13.04      Certificate and Opinion as to Conditions Precedent..........84
   Section 13.05      Statements Required in Certificate or Opinion...............84
   Section 13.06      Rules by Trustee and Agents.................................85
   Section 13.07      No Personal Liability of Directors, Officers, Employees
   and Stockholders...............................................................85
   Section 13.08      Governing Law...............................................85
   Section 13.09      No Adverse Interpretation of Other Agreements...............85
   Section 13.10      Successors..................................................85
   Section 13.11      Severability................................................85
   Section 13.12      Counterpart Originals.......................................85
   Section 13.13      Table of Contents, Headings, etc............................85
</Table>

                                    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 OF ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR
Exhibit E FORM OF SUBSIDIARY GUARANTEE
Exhibit F FORM OF SUPPLEMENTAL INDENTURE

                                       iv
<Page>

     INDENTURE dated as of October 30, 2003 among DRS Technologies, Inc., a
Delaware corporation (the "COMPANY"), the Guarantors (as defined) and The Bank
of New York, a New York banking corporation, as trustee (the "TRUSTEE").

     The Company, the Guarantors and the Trustee agree as follows for the
benefit of each other and for the equal and ratable benefit of the Holders (as
defined) of the 6 7/8% Senior Subordinated Notes due 2013 (the "NOTES"):

                                   ARTICLE 1.
                          DEFINITIONS AND INCORPORATION
                                  BY REFERENCE

Section 1.01  DEFINITIONS.

     "144A GLOBAL NOTE" means a Global Note substantially in the form of Exhibit
A hereto bearing the Global Note Legend and the Private Placement Legend and
deposited with or on behalf of, 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.

      "ACQUIRED DEBT" means, with respect to any specified Person:

              (1) Indebtedness of any other Person existing at the time such
     other Person is merged with or into or became a Subsidiary of such
     specified Person, whether or not such Indebtedness is 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

              (2) Indebtedness secured by a Lien encumbering any asset acquired
     by such specified Person.

     "ADDITIONAL NOTES" means an unlimited principal amount of additional Notes
(other than the Initial Notes) issued under this Indenture in accordance with
Sections 2.02 and 4.09 hereof, as part of the same series as the Initial Notes.

     "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,"
as used with respect to any Person, means 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 Stock of a Person will be deemed to be control. For purposes of this
definition, the terms "controlling," "controlled by" and "under common control
with" have correlative meanings.

     "AGENT" means any Registrar, co-registrar, Paying Agent or additional
paying agent.

     "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

              (1) the sale, lease, conveyance or other disposition of any assets
     or rights; provided that the sale, conveyance or other disposition of all
     or substantially all of the assets of the Company

<Page>

     and its Restricted Subsidiaries taken as a whole will be governed by
     Section 4.15 or 5.01 of this Indenture described above under the caption
     not by the Section 4.10 of this Indenture; and

              (2) the issuance of Equity Interests in any of the Company's
     Restricted Subsidiaries or the sale of Equity Interests in any of its
     Subsidiaries.

Notwithstanding the preceding, none of the following items will be deemed to be
an Asset Sale:

              (1) any single transaction or series of related transactions that
     involves assets having a Fair Market Value of less than $2.5 million;

              (2) a sale or transfer of assets between or among the Company and
     its Restricted Subsidiaries;

              (3) an issuance of Equity Interests by a Restricted Subsidiary of
     the Company to the Company or to a Restricted Subsidiary of the Company;

              (4) the sale or lease of products, services or accounts receivable
     in the ordinary course of business and any sale or other disposition of
     damaged, worn-out or obsolete assets in the ordinary course of business;

              (5) the sale or other disposition of cash or Cash Equivalents;

              (6) the granting of Liens not otherwise prohibited by this
     Indenture;

              (7) surrender or waiver of contract rights or the settlement,
     release or surrender of contract, tort or other claims; and

              (8) a Restricted Payment that does not violate Section 4.07 of
     this Indenture or a Permitted Investment.

     "ATTRIBUTABLE DEBT" in respect of a sale and leaseback transaction means,
at the time of determination, the present value 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. Such present
value shall be calculated using a discount rate equal to the rate of interest
implicit in such transaction, determined in accordance with GAAP; PROVIDED,
HOWEVER, that if such sale and leaseback transaction results in a Capital Lease
Obligation, the amount of Indebtedness represented thereby will be determined in
accordance with the definition of "Capital Lease Obligation."

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

     "BENEFICIAL OWNER" has the meaning assigned to such term in Rule 13d-3 and
Rule 13d-5 under the Exchange Act, except that in calculating the beneficial
ownership of any particular "person" (as that term is used in Section 13(d)(3)
of the Exchange Act), such "Person" will be deemed to have beneficial ownership
of all securities that such "Person" has the right to acquire by conversion or
exercise of other securities, whether such right is currently exercisable or is
exercisable only after the passage of time. The terms "Beneficially Owns" and
"Beneficially Owned" have a corresponding meaning.

                                        2
<Page>

     "BOARD OF DIRECTORS" means:

              (1) with respect to a corporation, the board of directors of the
     corporation or any committee thereof duly authorized to act on behalf of
     such board;

              (2) with respect to a partnership, the Board of Directors of the
     general partner of the partnership;

              (3) with respect to a limited liability company, the managing
     member or members or any controlling committee of managing members thereof;
     and

              (4) with respect to any other Person, the board or committee of
     such Person serving a similar function.

     "BORROWING BASE" means, as of any date, an amount equal to:

              (1) 85% of the face amount of all accounts receivable owned by the
     Company and its Restricted Subsidiaries as of the end of the most recent
     fiscal quarter preceding such date that were not more than 90 days past
     due; PLUS

              (2) 65% of the gross book value of all inventory owned by the
     Company and its Restricted Subsidiaries as of the end of the most recent
     fiscal quarter preceding such date.

     "BROKER-DEALER" has the meaning set forth in the Registration Rights
Agreement

     "BUSINESS DAY" means any day other than a Legal Holiday.

     "CAPITAL LEASE OBLIGATION" means, at the time any determination is to be
made, the amount of the liability in respect of a capital lease that would at
that time be required to be capitalized on a balance sheet in accordance with
GAAP, and the Stated Maturity thereof shall be the date of the last payment of
rent or any other amount due under such lease prior to the first date upon which
such lease may be prepaid by the lessee without payment of a penalty.

     "CAPITAL STOCK" means:

              (1) in the case of a corporation, corporate stock or other
     equivalents (however designated);

              (2) in the case of an association or business entity, any and all
     shares, interests, participations, rights or other equivalents (however
     designated) of corporate stock;

              (3) in the case of a partnership or limited liability company,
     partnership interests (whether general or limited) or membership interests;
     and

              (4) 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, but excluding from all of the foregoing
     any debt securities convertible into Capital Stock, whether or not such
     debt securities include any right of participation with Capital Stock.

                                        3
<Page>

     "CASH EQUIVALENTS" means:

              (1) United States dollars;

              (2) securities issued or directly and fully guaranteed or insured
     by the United States government or any agency or instrumentality of the
     United States government (PROVIDED that the full faith and credit of the
     United States is pledged in support of those securities) having maturities
     of not more than one year from the date of acquisition;

              (3) certificates of deposit and eurodollar time deposits with
     maturities of one year 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 commercial bank having capital
     and surplus in excess of $500.0 million and a Thomson Bank Watch Rating of
     "B" or better;

              (4) repurchase obligations with a term of not more than one year
     for underlying securities of the types described in clauses (2) and (3)
     above entered into with any financial institution meeting the
     qualifications specified in clause (3) above;

              (5) commercial paper having one of the two highest ratings
     obtainable from Moody's Investors commercial paper having one of the two
     highest ratings obtainable from Moody's Investors Service, Inc. or Standard
     & Poor's Rating Services and in each case maturing within one year after
     the date of acquisition;

              (6) marketable direct obligations issued by the United States of
     America or any political subdivision of any state or any public
     instrumentality thereof having one of the two highest ratings obtainable
     from Moody's Investors Service, Inc. or Standard & Poor's Rating Services
     and in each case maturing within one year after the date of acquisition;
     and

              (7) money market funds at least 95% of the assets of which
     constitute Cash Equivalents of the kinds described in clauses (1) through
     (6) of this definition.

     "CHANGE OF CONTROL" means the occurrence of any of the following:

              (1) the direct or indirect sale, 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
     properties or assets of the Company and its Subsidiaries taken as a whole
     to any "person" (as that term is used in Section 13(d) of the Exchange
     Act);

              (2) the adoption of a plan relating to the liquidation or
     dissolution of the Company;

              (3) the consummation of any transaction (including, without
     limitation, any merger or consolidation) the result of which is that any
     "Person" (as defined above), directly or indirectly, becomes the Beneficial
     Owner of more than 50% of the Voting Stock of the Company, measured by
     voting power rather than number of shares; or

              (4) the Company consolidates with, or merges with or into, any
     Person, or any Person consolidates with, or merges with or into, the
     Company, in any such event pursuant to a transaction in which any of the
     outstanding Voting Stock of the Company or such other Person is converted
     into or exchanged for cash, securities or other property, other than any
     such transaction where the Voting Stock of the Company outstanding
     immediately prior to such transaction is converted into or exchanged for
     Voting Stock (other than Disqualified Stock) of the surviving or

                                        4
<Page>

     transferee Person constituting a majority of the outstanding shares of such
     Voting Stock of such surviving or transferee Person (immediately after
     giving effect to such issuance).

     "CLEARSTREAM" means Clearstream Banking, S.A.

     "COMPANY"  means DRS Technologies, Inc. and any and all successors thereto.

     "CONSOLIDATED CASH FLOW" means, with respect to any specified Person for
any period, the Consolidated Net Income of such Person for such period PLUS,
without duplication:

              (1) an amount equal to any extraordinary loss plus any net loss
     realized by such Person or any of its Restricted Subsidiaries in connection
     with an Asset Sale, to the extent such losses were deducted in computing
     such Consolidated Net Income; PLUS

              (2) 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 deducted in computing such Consolidated Net Income;
     PLUS

              (3) the Fixed Charges of such Person and its Restricted
     Subsidiaries for such period, to the extent that such Fixed Charges were
     deducted in computing such Consolidated Net Income; PLUS

              (4) depreciation, amortization (including amortization of
     intangibles but excluding amortization of 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

              (5) non-cash items increasing such Consolidated Net Income for
     such period, other than the accrual of revenue in the ordinary course of
     business,

in each case, on a consolidated basis and determined in accordance with GAAP.

     Notwithstanding the preceding, the provision for taxes based on the income
or profits of, and the depreciation and amortization and other non-cash expenses
of, a Restricted Subsidiary of the Company will be added to Consolidated Net
Income to compute Consolidated Cash Flow of the Company only to the extent that
a corresponding amount would be permitted at the date of determination to be
dividended to the Company by such Restricted Subsidiary without prior
governmental approval (that has not been obtained), and without direct or
indirect restriction pursuant to the terms of its charter and all agreements,
instruments, judgments, decrees, orders, statutes, rules and governmental
regulations applicable to that Restricted Subsidiary or its stockholders.

     "CONSOLIDATED NET INCOME" means, with respect to any specified 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:

              (1) the Net Income (but not loss) of any Person that is not a
     Restricted Subsidiary or that is accounted for by the equity method of
     accounting will be included only to the extent of the

                                        5
<Page>

     amount of dividends or similar distributions paid in cash to the specified
     Person or a Restricted Subsidiary of the Person;

              (2) the Net Income of any Restricted Subsidiary will 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;

              (3) the cumulative effect of a change in accounting principles
     will be excluded; and

              (4) notwithstanding clause (1) above, the Net Income of any
     Unrestricted Subsidiary will be excluded, whether or not distributed to the
     specified Person or one of its Subsidiaries.

     "CONSOLIDATED TANGIBLE ASSETS" means, with respect to the Company as of any
date, the aggregate of the assets of the Company and its Restricted Subsidiaries
excluding goodwill, patents, trade names, trade marks, copyrights, franchises,
experimental expense, organization expense and any other assets properly
classified as intangible assets in accordance with GAAP, as of such date on a
consolidated basis, determined in accordance with GAAP. In the event that
information relating to Consolidated Tangible Assets is not available as of any
date, then the most recently available information will be utilized.

     "CORPORATE TRUST OFFICE OF THE TRUSTEE" will be at the address of the
Trustee specified in Section 13.02 hereof or such other address as to which the
Trustee may give notice to the Company.

     "CREDIT AGREEMENT" means the Existing Credit Agreement as such credit
agreement will be amended and restated pursuant to the senior credit agreement
among the Company, the guarantors named therein, the institutions who are or may
become party thereto (the "Lenders"), Bear Stearns Corporate Lending Inc., as
Syndication Agent for the Lenders and Wachovia Bank, National Association, as
Administrative Agent for the Lenders, upon the consummation of the IDT Merger
and the occurrence of the Condition for Release, providing for a revolving
credit facility, a letter of credit facility and a term loan facility as
described in the "Description of Other Indebtedness-Senior Secured Credit
Facility" section of Offering Memorandum.

     "CREDIT FACILITIES" means, one or more debt facilities (including without
limitation the Credit Agreement) or commercial paper facilities, in each case
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), synthetic leases or letters of credit, in each case,
as amended, restated, modified, renewed, refunded, replaced or refinanced
(including by means of sales of debt securities to institutional investors) in
whole or in part from time to time.

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

     "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 Section 2.06 hereof, substantially
in the form of Exhibit A hereto except that

                                        6
<Page>

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, and any and all successors thereto
appointed as depositary hereunder and having become such pursuant to the
applicable provision of this Indenture.

     "DESIGNATED SENIOR DEBT" means:

              (1) any Indebtedness outstanding under the Credit Agreement; and

              (2) after payment in full of all Obligations under the Credit
     Agreement, any other Senior Debt permitted under this Indenture the
     principal amount of which is $25.0 million or more and that has been
     designated by the Company as "Designated Senior Debt."

     "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, in each case at the option of the holder of the Capital Stock), 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 of the Capital Stock, in whole or in part, on or prior to the date that
is 91 days after the date on which the notes mature. Notwithstanding the
preceding sentence, any Capital Stock that would constitute Disqualified Stock
solely because the holders of the Capital Stock have the right to require the
Company to repurchase such Capital Stock upon the occurrence of a change of
control or an asset sale will 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. The amount of Disqualified Stock
deemed to be outstanding at any time for purposes of this Indenture will be the
maximum amount that the Company and its Restricted Subsidiaries may become
obligated to pay upon the maturity of, or pursuant to any mandatory redemption
provisions of, such Disqualified Stock, exclusive of accrued dividends.

     "DOMESTIC SUBSIDIARY" means any Restricted Subsidiary of the Company that
was formed under the laws of the United States or any state of the United States
or the District of Columbia or that guarantees or otherwise provides direct
credit support for any Indebtedness of the Company. The pledge of Capital Stock
of a Restricted Subsidiary of the Company will not be considered to be a
provision of direct credit support for Indebtedness of the Company by such
Restricted Subsidiary. Notwithstanding the foregoing, Laurel Technologies
Partnership (dba DRS Laurel Technologies) and MSSC LP and their respective
subsidiaries will not be a Domestic Subsidiary for so long as such entity is not
directly or indirectly wholly-owned by the Company, PROVIDED that should Laurel
Technologies Partnership (dba DRS Laurel Technologies) or MSSC LP and their
respective subsidiaries be directly or indirectly wholly-owned by the Company at
any point after the date of this Indenture, they and their respective
subsidiaries will become Subsidiary Guarantors in compliance with Section 4.19
hereof.

     "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 issuance or sale of Equity
Interests (other than Disqualified Stock) of the Company.

     "ESCROW AGREEMENT" means the agreement, dated October 30, 2003, between the
Company and The Bank of New York, as escrow agent and trustee pursuant to which
the Company will deposit the

                                        7
<Page>

gross proceeds from the offering of the Notes, interest from October 30, 2003
through December 15, 2003.

     "ESCROW REDEMPTION DATE" means either:

              (1) December 16, 2003; or

              (2) the date on which the Company may redeem the notes, in whole,
     but not in part, at their sole option, on or prior to December 15, 2003, if
     in the sole judgment of the Company, the IDT Merger will not be consummated
     on or prior to December 15, 2003.

     "ESCROW REDEMPTION PRICE" means an amount of Government Securities with a
value equal to 100% of the aggregate principal amount of the notes on December
16, 2003 plus accrued interest on the notes on or prior to the Escrow Redemption
Date.

     "EUROCLEAR" means Euroclear Bank, S.A./N.V., 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) hereof.

     "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 CREDIT AGREEMENT" means the amended and restated senior credit
agreement dated as of November 26, 2002 among the Company, the guarantors named
therein, the institutions who are or may become party thereto (the "Lenders"),
TD Securities (USA), Inc. and Bear Stearns Corporate Lending Inc., as
Syndication Agents for the Lenders, Fleet National Bank, as Documentation Agent
for the Lenders and Wachovia Bank, National Association, as Administrative Agent
for the Lenders providing for a revolving credit facility, a letter of credit
facility and a term loan facility.

     "EXISTING INDEBTEDNESS" means any and all Indebtedness of the Company and
its Subsidiaries (other than Indebtedness under the Credit Agreement) in
existence on the date of this Indenture, until such amounts are repaid.

     "FAIR MARKET VALUE" means the value that would be paid by a willing buyer
to an unaffiliated willing seller in a transaction not involving distress or
necessity of either party, determined in good faith by the Board of Directors of
the Company (unless otherwise provided in this Indenture).

     "FIXED CHARGE COVERAGE RATIO" means with respect to any specified Person
for any period, the ratio of the Consolidated Cash Flow of such Person for such
period to the Fixed Charges of such Person for such period. In the event that
the specified Person or any of its Restricted Subsidiaries incurs, assumes,
Guarantees, repays, repurchases, redeems, defeases or otherwise discharges any
Indebtedness (other than ordinary working capital borrowings) or issues,
repurchases or redeems preferred stock subsequent to the commencement of the
period for which the Fixed Charge Coverage Ratio is being calculated and 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 will be calculated giving pro forma effect to such incurrence,
assumption, Guarantee, repayment, repurchase,

                                        8
<Page>

redemption, defeasance or other discharge of Indebtedness, or such issuance,
repurchase or redemption of preferred stock, and the use of the proceeds
therefrom, as if the same had occurred at the beginning of the applicable
four-quarter reference period.

In addition, for purposes of calculating the Fixed Charge Coverage Ratio:

              (1) acquisitions that have been made by the specified Person or
     any of its Restricted Subsidiaries, including through mergers or
     consolidations, or any Person or any of its Restricted Subsidiaries
     acquired by the specified Person or any of its Restricted Subsidiaries, and
     including any related financing transactions and including increases in
     ownership of Restricted Subsidiaries, during the four-quarter reference
     period or subsequent to such reference period and on or prior to the
     Calculation Date will be given pro forma effect (in accordance with
     Regulation S-X under the Securities Act) as if they had occurred on the
     first day of the four-quarter reference period;

              (2) the Consolidated Cash Flow attributable to discontinued
     operations, as determined in accordance with GAAP, and operations or
     businesses (and ownership interests therein) disposed of prior to the
     Calculation Date, will be excluded;

              (3) the Fixed Charges attributable to discontinued operations, as
     determined in accordance with GAAP, and operations or businesses (and
     ownership interests therein) disposed of prior to the Calculation Date,
     will be excluded, but only to the extent that the obligations giving rise
     to such Fixed Charges will not be obligations of the specified Person or
     any of its Restricted Subsidiaries following the Calculation Date;

              (4) any Person that is a Restricted Subsidiary on the Calculation
     Date will be deemed to have been a Restricted Subsidiary at all times
     during such four-quarter period;

              (5) any Person that is not a Restricted Subsidiary on the
     Calculation Date will be deemed not to have been a Restricted Subsidiary at
     any time during such four-quarter period; and

              (6) if any Indebtedness bears a floating rate of interest, the
     interest expense on such Indebtedness will be calculated as if the rate in
     effect on the Calculation Date had been the applicable rate for the entire
     period (taking into account any Hedging Obligation applicable to such
     Indebtedness if such Hedging Obligation has a remaining term as at the
     Calculation Date in excess of twelve months).

     "FIXED CHARGES" means, with respect to any specified Person for any period,
the sum, without duplication, of:

              (1) the consolidated interest expense of such Person and its
     Restricted Subsidiaries for such period, whether paid or accrued,
     including, without limitation, amortization of debt issuance costs and
     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 of the effect of all payments made or received pursuant to Hedging
     Obligations in respect of interest rates; plus

              (2) the consolidated interest of such Person and its Restricted
     Subsidiaries that was capitalized during such period; plus

                                        9
<Page>

              (3) any interest accruing 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; plus

              (4) the product of (a) all dividends, whether paid or accrued and
     whether or not in cash, on any series of preferred stock of such Person or
     any of its Restricted Subsidiaries, other than dividends on Equity
     Interests payable solely in Equity Interests of the Company (other than
     Disqualified Stock) or to the Company or a Restricted Subsidiary 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.

     "FOREIGN BORROWING BASE" means, as of any date, an amount equal to:

              (1) 85% of the face amount of all accounts receivable owned by the
     Company's Foreign Subsidiaries as of the end of the most recent fiscal
     quarter preceding such date that were not more than 90 days past due; plus

              (2) 65% of the gross book value of all inventory owned by the
     Company's Foreign Subsidiaries as of the end of the most recent fiscal
     quarter preceding such date.

     "FOREIGN SUBSIDIARY" means any Restricted Subsidiary that is not a Domestic
Subsidiary. Notwithstanding the foregoing, Laurel Technologies Partnership
(d/b/a DRS Laurel Technologies) and MSSC LP and their respective subsidiaries
will not be a Foreign Subsidiary.

     "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 are in effect from time to time.

     "GLOBAL NOTE LEGEND" means the legend set forth in Section 2.06(g)(2),
which is required to be placed on all Global Notes issued under this Indenture.

     "GLOBAL NOTES" means, individually and collectively, each of the Restricted
Global Notes and the Unrestricted Global Notes deposited with or on behalf of
and registered in the name of the Depository or its nominee, substantially in
the form of Exhibit A hereto and that bears the Global Note Legend and that has
the "Schedule of Exchanges of Interests in the Global Note" attached thereto,
issued in accordance with Section 2.01, 2.06(b)(3), 2.06(b)(4), 2.06(d)(2) or
2.06(f) hereof.

     "GOVERNMENT SECURITIES" means direct obligations of, or obligations
guaranteed by, the United States of America for the payment of which guarantees
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, by way of a pledge of
assets or through letters of credit or reimbursement agreements in respect
thereof, of all or any part of any Indebtedness (whether arising by virtue of
partnership arrangements, or by agreements to keep-well, to purchase assets,
goods, securities or services, to take or pay or to maintain financial statement
conditions or otherwise).

                                       10
<Page>

     "GUARANTORS" means each of:

              (1) the Company's direct and indirect Domestic Subsidiaries
     existing on the date of this Indenture; and

              (2) any other Subsidiary of the Company that executes a Subsidiary
     Guarantee in accordance with the provisions of this Indenture,

and their respective successors and assigns.

     "HEDGING OBLIGATIONS" means, with respect to any specified Person, the
obligations of such Person under:

              (1) interest rate swap agreements (whether from fixed to floating
     or from floating to fixed), interest rate cap agreements and interest rate
     collar agreements;

              (2) other agreements or arrangements designed to manage interest
     rates or interest rate risk; and

              (3) other agreements or arrangements designed to protect such
     Person against fluctuations in currency exchange rates or commodity prices.

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

     "IAI GLOBAL NOTE" means a Global Note substantially in the form of EXHIBIT
A hereto bearing the Global Note Legend and the Private Placement Legend and
deposited with or on behalf of 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.

     "IDT MERGER" means the acquisition by the Company of all of the outstanding
stock of Integrated Defense Technologies, Inc. and the merger of Integrated
Defense Technologies, Inc. into a wholly-owned subsidiary of the Company.

     "IMMATERIAL SUBSIDIARY" means, as of any date, any Restricted Subsidiary
whose total assets, as of that date, are less than $100,000 and whose total
revenues for the most recent twelve-month period do not exceed $100,000;
provided that a Restricted Subsidiary will not be considered to be an Immaterial
Subsidiary if it, directly or indirectly, guarantees or otherwise provides
direct credit support for any Indebtedness of the Company.

     "INDEBTEDNESS" means, with respect to any specified Person, any
indebtedness of such Person (excluding accrued expenses and trade payables),
whether or not contingent:

              (1) in respect of borrowed money;

              (2) evidenced by bonds, notes, debentures or similar instruments
     or letters of credit (or reimbursement agreements in respect thereof);

              (3) in respect of banker's acceptances;

              (4) representing Capital Lease Obligations or Attributable Debt in
     respect of sale and leaseback transactions;

                                       11
<Page>

              (5) representing the balance deferred and unpaid of the purchase
     price of any property or services due more than six months after such
     property is acquired or such services are completed; or

              (6) representing the net obligations under any Hedging
     Obligations,

if and to the extent any of the preceding items (other than letters of credit,
Attributable Debt and Hedging Obligations) would appear as a liability upon a
balance sheet of the specified Person prepared in accordance with GAAP. In
addition, the term "Indebtedness" includes all Indebtedness of others secured by
a Lien on any asset of the specified Person (whether or not such Indebtedness is
assumed by the specified Person) and, to the extent not otherwise included, the
Guarantee by the specified Person of any Indebtedness of any other Person.

     "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 the first $350,000,000 aggregate principal amount of
Notes issued under this Indenture on the date hereof.

     "INITIAL PURCHASERS" means Bear, Stearns & Co. Inc., Wachovia Capital
Markets LLC and Fleet Securities, Inc.

     "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, who are not also QIBs.

     "INVESTMENTS" means, with respect to any Person, all direct or indirect
investments by such Person in other Persons (including Affiliates) in the forms
of loans (including Guarantees or other obligations, other than advances to
customers in the ordinary course of business that are recorded as accounts
receivable), advances or capital contributions (excluding commission, travel and
similar 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 Subsidiary of the Company sells or otherwise
disposes of any Equity Interests of any direct or indirect 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 will be deemed to
have made an Investment on the date of any such sale or disposition equal to the
Fair Market Value of the Company's Investments in such Subsidiary that were not
sold or disposed of in an amount determined as provided in the final paragraph
of Section 4.07 hereof. The acquisition by the Company or any Subsidiary of the
Company of a Person that holds an Investment in a third Person will be deemed to
be an Investment by the Company or such Subsidiary in such third Person in an
amount equal to the Fair Market Value of the Investments held by the acquired
Person in such third Person in an amount determined as provided in the final
paragraph of Section 4.07 hereof. Except as otherwise provided in this
Indenture, the amount of an Investment will be determined at the time the
Investment is made and without giving effect to subsequent changes in value.

     "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

                                       12
<Page>

the next succeeding day that is not a Legal Holiday, and no interest shall
accrue on such payment for the intervening period.

     "LETTER OF TRANSMITTAL" means the letter of transmittal to be prepared by
the Company and sent to all Holders of the 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 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.

     "LIQUIDATED DAMAGES" means all liquidated damages then owing pursuant to
Section 5 of the Registration Rights Agreement.

     "NET INCOME" means, with respect to any specified 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:

              (1) any gain (but not loss), together with any related provision
     for taxes on such gain (but not loss), realized in connection with: (a) any
     Asset Sale; 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

              (2) any extraordinary gain (but not loss), together with any
     related provision for taxes on such extraordinary gain (but not loss).

     "NET PROCEEDS" means the aggregate cash proceeds received by the Company or
any of its Restricted 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 of the Asset Sale, taxes paid or payable as a result of the
Asset Sale, in each case, after taking into account any available tax credits or
deductions and any tax sharing arrangements, and amounts required to be applied
to the repayment of Indebtedness, other than Senior Debt, 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:

              (1) 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,
     other than the pledge of stock of an Unrestricted Subsidiary), (b) is
     directly or indirectly liable as a Guarantor or otherwise, or (c)
     constitutes the lender;

              (2) no default with respect to which (including any rights that
     the holders of the Indebtedness 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 the Notes) of the Company
     or any of its Restricted Subsidiaries to declare a default on such other

                                       13
<Page>

     Indebtedness or cause the payment of the Indebtedness to be accelerated or
     payable prior to its Stated Maturity; and

              (3) 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.

     "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, interest, penalties, fees, expenses,
indemnifications, reimbursements (including without limitation, reimbursement
for legal fees and expenses), damages and other liabilities payable under the
documentation governing any Indebtedness.

     "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 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 13.05
hereof.

     "OPINION OF COUNSEL" means an opinion from legal counsel who is reasonably
acceptable to the Trustee, that meets the requirements of Section 13.05 hereof.
The counsel may be an employee of or counsel to the Company or any Subsidiary of
the Company.

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

     "PERMITTED BUSINESS" means any of the lines of business conducted by the
Company and its Subsidiaries on the date of this Indenture and any businesses
similar, related, incidental or ancillary thereto or that constitutes a
reasonable extension or expansion thereof.

     "PERMITTED INVESTMENTS" means:

              (1) any Investment in the Company or in a Restricted Subsidiary of
     the Company;

              (2) any Investment in Cash Equivalents;

              (3) 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; or

                                       14
<Page>

                      (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 or a Restricted
              Subsidiary of the Company;

              (4) any 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 hereof;

              (5) any acquisition of assets or Capital Stock solely in exchange
     for the issuance of Equity Interests (other than Disqualified Stock) of the
     Company;

              (6) any Investments received in compromise or resolution of (A)
     obligations of trade creditors or customers that were incurred in the
     ordinary course of business of the Company or any of its Restricted
     Subsidiaries, including pursuant to any plan of reorganization or similar
     arrangement upon the bankruptcy or insolvency of any trade creditor or
     customer; or (B) litigation, arbitration or other disputes with Persons who
     are not Affiliates;

              (7) Investments represented by Hedging Obligations;

              (8) loans or advances to employees made in the ordinary course of
     business of the Company or the Restricted Subsidiary of the Company in an
     aggregate principal amount not to exceed $2.0 million at any one time
     outstanding;

              (9) repurchases of the notes;

              (10) receivables owing to the Company or any Restricted Subsidiary
     created in the ordinary course of business;

              (11) payroll, travel and similar advances that are expected at the
     time of such advances ultimately to be treated as expenses for accounting
     purposes;

              (12) Investments in existence on the date of this Indenture; and

              (13) 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 (13) that are at
     the time outstanding not to exceed the greater of (x) $30.0 million and (y)
     3.0% of Consolidated Tangible Assets.

     "PERMITTED JUNIOR SECURITIES" means:

              (1) Equity Interests in the Company or any Guarantor; or

              (2) 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 under this Indenture.

     "PERMITTED LIENS" means:

              (1) Liens on assets of the Company or any Restricted Subsidiary
     securing Senior Debt that was permitted by the terms of this Indenture to
     be incurred;

              (2) Liens in favor of the Company or the Guarantors;

                                       15
<Page>

              (3) Liens on property of a Person existing at the time such Person
     is merged with or into or consolidated with the Company or any 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 or the Subsidiary;

              (4) Liens on property (including Capital Stock) existing at the
     time of acquisition of the property by the Company or any Subsidiary of the
     Company, provided that such Liens were in existence prior to, such
     acquisition, and not incurred in contemplation of, such acquisition;

              (5) 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,

              (6) Liens to secure Indebtedness (including Capital Lease
     Obligations) permitted by Section 4.09(b)(4) covering only the assets
     acquired with or financed by such Indebtedness;

              (7) Liens existing on the date of this Indenture;

              (8) 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 is required in
     conformity with GAAP has been made therefor;

              (9) Liens imposed by law, such as carriers', warehousemen's,
     landlord's and mechanics' Liens, in each case, incurred in the ordinary
     course of business or good faith deposits in connection with bids, tenders,
     contracts or leases to which the Company or any Restricted Subsidiary is a
     party;

              (10) survey exceptions, easements or reservations of, or rights of
     others for, licenses, rights-of-way, sewers, electric lines, telegraph and
     telephone lines and other similar purposes, or zoning or other restrictions
     as to the use of real property that were not incurred in connection with
     Indebtedness and that do not in the aggregate materially adversely affect
     the value of said properties or materially impair their use in the
     operation of the business of such Person;

              (11) Liens created for the benefit of (or to secure) the Notes (or
     the Subsidiary Guarantees);

              (12) Liens to secure any Permitted Refinancing Indebtedness
     permitted to be incurred under this Indenture; provided, however, that:

                      (a) the new Lien shall be limited to all or part of the
              same property and assets that secured or, under the written
              agreements pursuant to which the original Lien arose, could secure
              the original Lien (plus improvements and accessions to, such
              property or proceeds or distributions thereof); and

                      (b) the Indebtedness secured by the new Lien is not
              increased to any amount greater than the sum of (x) the
              outstanding principal amount or, if greater, committed amount, of
              the Permitted Referencing Indebtedness and (y) an amount necessary
              to pay any fees and expenses, including premiums, related to such
              refinancings, refunding, extension, renewal or replacement;

                                       16
<Page>

              (13) licenses of intellectual property in the ordinary course of
     business;

              (14) Liens arising out of judgments, decrees, orders or awards in
     respect of which the Company shall in good faith be prosecuting on appeal
     or proceeding for review, which appeal or proceeding shall not have been
     finally terminated or if the period within such appeal or proceeding may be
     initiated shall not have expired;

              (15) Liens securing hedging obligations;

              (16) Liens on Capital Stock of an Unrestricted Subsidiary that
     secure Indebtedness or other obligations of such Unrestricted Subsidiary;

              (17) leases, subleases, licenses or sublicenses to third parties
     entered into in the ordinary course of business; and

              (18) Liens incurred in the ordinary course of business of the
     Company or any Subsidiary of the Company with respect to obligations that
     do not exceed $10.0 million at any one time outstanding.

     "PERMITTED REFINANCING INDEBTEDNESS" means any Indebtedness of the Company
or any of its Restricted Subsidiaries issued in exchange for, or the net
proceeds of which are used to refund, refinance, replace, defease or discharge
other Indebtedness of the Company or any of its Restricted Subsidiaries (other
than intercompany Indebtedness); PROVIDED that:

              (1) the principal amount (or accreted value, if applicable) of
     such Permitted Refinancing Indebtedness does not exceed the principal
     amount (or accreted value, if applicable) of the Indebtedness extended,
     refinanced, renewed, replaced, defeased or refunded (plus all accrued
     interest on the Indebtedness and the amount of all expenses and premiums
     incurred in connection therewith);

              (2) such Permitted Refinancing Indebtedness has a final maturity
     date later 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;

              (3) if the Indebtedness being extended, refinanced, renewed,
     replaced, defeased or refunded is subordinated in right of payment to the
     notes, such Permitted Refinancing Indebtedness has a final maturity date
     later than the final maturity date of, and is subordinated in right of
     payment to, the notes on terms at least as favorable, taken as a whole, to
     the holders of notes as those contained in the documentation governing the
     Indebtedness being extended, refinanced, renewed, replaced, defeased or
     refunded; and

              (4) 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.

     "PERSON" means any individual, corporation, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization, limited
liability company or government or other entity.

     "PRIVATE PLACEMENT LEGEND" means the legend set forth in Section 2.06(g)(1)
to be placed on all Notes issued under this Indenture except where otherwise
permitted by the provisions of this Indenture.

                                       17
<Page>

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

     "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights Agreement,
dated as of October 30, 2003, among the Company, the Guarantors 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 among the Company, the
Guarantors and the other parties thereto, as such agreements 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 substantially in the form of
EXHIBIT A hereto bearing the Global Note Legend and the Private Placement Legend
and deposited with or on behalf of and registered in the name of the Depositary
or its nominee, issued in a denomination equal to the outstanding principal
amount of the Notes sold in reliance on Rule 903 of Regulation S.

     "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) 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 and who shall have direct
responsibility for the administration of this Indenture.

     "RESTRICTED DEFINITIVE NOTE" means a Definitive Note bearing the Private
Placement Legend.

     "RESTRICTED GLOBAL NOTE" means a Global Note bearing the Private Placement
Legend.

     "RESTRICTED INVESTMENT" means an Investment other than a Permitted
Investment.

     "RESTRICTED SUBSIDIARY" of a Person means any Subsidiary of the referent
Person that is not an Unrestricted Subsidiary.

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

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

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

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

     "SEC" means the Securities and Exchange Commission.

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

     "SENIOR DEBT" means:

              (1) all Indebtedness of the Company or any Guarantor outstanding
     under Credit Facilities and all Hedging Obligations with respect thereto;

                                       18
<Page>

              (2) any other Indebtedness of the Company or any Guarantor
     permitted to be incurred under the terms of this 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 or any Subsidiary Guarantee; and

              (3) all Obligations with respect to the items listed in the
     preceding clauses (1) and (2).

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

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

              (2) any intercompany Indebtedness of the Company or any of its
     Subsidiaries to the Company or any of its Affiliates;

              (3) any trade payables;

              (4) the portion of any Indebtedness that is incurred in violation
     of this Indenture; or

              (5) Indebtedness which is classified as non-recourse in accordance
     with GAAP or any unsecured claim arising in respect thereof by reason of
     the application of section 1111(b)(1) of the Bankruptcy Code.

     "SIGNIFICANT SUBSIDIARY" means any Subsidiary that would be a "significant
subsidiary" as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated
pursuant to the Securities Act, as such Regulation is in effect on the date of
this Indenture.

     "STATED MATURITY" means, with respect to any installment of interest or
principal on any series of Indebtedness, the date on which the payment of
interest or principal was scheduled to be paid in the documentation governing
such Indebtedness as of the date of this Indenture, and will 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 specified Person:

              (1) 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 and after giving
     effect to any voting agreement or stockholders' agreement that effectively
     transfers voting power) to vote in the election of directors, managers or
     trustees of the corporation, association or other business entity is at the
     time owned or controlled, directly or indirectly, by that Person or one or
     more of the other Subsidiaries of that Person (or a combination thereof);
     and

              (2) 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 that Person or one or more
     Subsidiaries of that Person (or any combination thereof).

     "SUBSIDIARY GUARANTEE" means the Guarantee by each Guarantor of the
Company's payment obligations under this Indenture and on the Notes, executed
pursuant to the provisions of this Indenture.

     "TIA" means the Trust Indenture Act of 1939 (15 U.S.C. Sections
77aaa-77bbbb) as in effect on the date on which this Indenture is qualified
thereunder, as may be amended from time to time.

                                       19
<Page>

     "TRUSTEE" means the party named as such in the preamble to this Indenture
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 a Global Note that does not bear and is
not required to bear the Private Placement Legend.

     "UNRESTRICTED DEFINITIVE NOTE" means a Definitive Note that does not bear
and is not required to bear the Private Placement Legend.

     "UNRESTRICTED SUBSIDIARY" means any Subsidiary of the Company 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:

              (1) has no Indebtedness other than Non-Recourse Debt;

              (2) except as permitted by Section 4.11 hereof, 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, taken as a whole, than those
     that might be obtained at the time from Persons who are not Affiliates of
     the Company;

              (3) 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; and

              (4) has not guaranteed or otherwise directly or indirectly
     provided credit support for any Indebtedness of the Company or any of its
     Restricted Subsidiaries.

     Any designation of a Subsidiary of the Company as an Unrestricted
Subsidiary will be evidenced to the Trustee by filing with the Trustee a
certified copy of the Board Resolution giving effect to such designation and an
Officers' Certificate certifying that such designation complied with the
preceding conditions and was permitted by Section 4.07 hereof. If, at any time,
any Unrestricted Subsidiary would fail to meet the preceding requirements as an
Unrestricted Subsidiary, it will thereafter cease to be an Unrestricted
Subsidiary for purposes of this Indenture and any Indebtedness of such
Subsidiary will 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 pursuant to Section 4.09 hereof, the Company will 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 will 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 will only be permitted if (1) such
Indebtedness is permitted under Section 4.09 hereof calculated on a pro forma
basis as if such designation had occurred at the beginning of the four-quarter
reference period; and (2) 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) promulgated
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.

                                       20
<Page>

     "WEIGHTED AVERAGE LIFE TO MATURITY means, when applied to any Indebtedness
at any date, the number of years obtained by dividing:

              (1) 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 of the Indebtedness, 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

              (2) the then outstanding principal amount of such Indebtedness.

Section 1.02  OTHER DEFINITIONS.

<Table>
<Caption>
                                                                                             Defined in
     Term                                                                                     Section
     ----                                                                                    ----------
     <S>                                                                                        <C>
     "AFFILIATE TRANSACTION".............................................................       4.11
     "ASSET SALE OFFER"..................................................................       3.09
     "AUTHENTICATION ORDER"..............................................................       2.02
     "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
     "INCUR".............................................................................       4.09
     "LEGAL DEFEASANCE"..................................................................       8.02
     "OFFER AMOUNT"......................................................................       3.09
     "OFFER PERIOD"......................................................................       3.09
     "PAYING AGENT"......................................................................       2.03
     "PERMITTED DEBT"....................................................................       4.09
     " PAYMENT BLOCKAGE NOTICE"..........................................................       10.03
     "PAYMENT DEFAULT" ..................................................................       6.01
     "PURCHASE DATE".....................................................................       3.09
     "REDEMPTION DATE" ..................................................................       3.07
     "REGISTRAR".........................................................................       2.03
     "RESTRICTED PAYMENTS"...............................................................       4.07
</Table>

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.

     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;

                                       21
<Page>

     "INDENTURE TRUSTEE" or "INSTITUTIONAL TRUSTEE" means the Trustee; and

     "OBLIGOR" on the Notes and the Subsidiary Guarantees means the Company and
the Guarantors, respectively, and any successor obligor upon the Notes and the
Subsidiary Guarantees, respectively.

     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) "will" shall be interpreted to express a command;

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

              (7) references to sections of or rules under the Securities Act
     will 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.

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

     The terms and provisions contained in the Notes will constitute, and are
hereby expressly made, a part of this Indenture and the Company, the Guarantors
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.

     (b) GLOBAL NOTES. Notes issued in global form will be substantially in the
form of Exhibit A attached hereto (including the Global Note Legend thereon and
the "Schedule of Exchanges of Interests in the Global Note" attached thereto).
Notes issued in definitive form will be substantially in the form of Exhibit A
attached hereto (but without the Global Note Legend thereon and without the
"Schedule of Exchanges of Interests in the Global Note" attached thereto). Each
Global Note will represent such of the outstanding Notes as will be specified
therein and each shall provide that it represents 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

                                       22
<Page>

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 will be made
by the Trustee or the Custodian, at the direction of the Trustee, in accordance
with instructions given by the Holder thereof as required by Section 2.06
hereof.

     (c) EUROCLEAR AND CLEARSTREAM PROCEDURES APPLICABLE. 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 will be applicable to transfers
of beneficial interests the Regulation S Global Note that are held by
Participants through Euroclear or Clearsteam.

Section 2.02  EXECUTION AND AUTHENTICATION.

     At least one Officer must 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 will nevertheless be valid.

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

     The Trustee will, upon receipt of a written order of the Company signed by
two Officers (an "AUTHENTICATION ORDER"), authenticate Notes for original issue
up to the aggregate principal amount stated in paragraph 4 of the Notes.

     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 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 will 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
will 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 will 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 Custodian with respect to the Global Notes.

Section 2.04  PAYING AGENT TO HOLD MONEY IN TRUST.

                                       23
<Page>

     The Company will 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 Liquidated Damages, 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) will have no further
liability for the money. If the Company or a Subsidiary acts as Paying Agent, it
will 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 will serve as Paying Agent for
the Notes.

Section 2.05  HOLDER LISTS.

     The Trustee will 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 Section 312(a). If the Trustee is not the
Registrar, the Company will furnish to the Trustee at least seven 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 Section 312(a).

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:

              (1) 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

              (2) 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.

              (3) Upon the occurrence of either of the preceding events in (1)
     or (2) 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 2.10
     hereof. Every Note authenticated and delivered in exchange for, or in lieu
     of, a Global Note or any portion thereof, pursuant to this Section 2.06 or
     Section 2.07 or 2.10 hereof, shall be authenticated and delivered 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 will be
effected through the Depositary, in accordance with the provisions of this
Indenture and the Applicable Procedures. Beneficial interests in

                                       24
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the Restricted Global Notes will be subject to restrictions on transfer
comparable to those set forth herein to the extent required by the Securities
Act. Transfers of beneficial interests in the Global Notes also will require
compliance with either subparagraph (1) or (2) below, as applicable, as well as
one or more of the other following subparagraphs, as applicable:

              (1) 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 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)(1).

              (2) ALL OTHER TRANSFERS AND EXCHANGES OF BENEFICIAL INTERESTS IN
     GLOBAL NOTES. In connection with all transfers and exchanges of beneficial
     interests that are not subject to Section 2.06(b)(1) above, the transferor
     of such beneficial interest must deliver to the Registrar either:

                      (A) both:

                              (i)     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
                      another Global Note in an amount equal to the beneficial
                      interest to be transferred or exchanged; and

                              (ii)    instructions given in accordance with the
                      Applicable Procedures containing information regarding the
                      Participant account to be credited with such increase; or

                      (B) both:

                              (i)     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

                              (ii)    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 consummation of an Exchange Offer by the Company in
                      accordance with Section 2.06(f) hereof, the requirements
                      of this Section 2.06(b)(2) 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 and
                      the Notes or 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.

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<Page>

              (3) TRANSFER OF BENEFICIAL INTERESTS TO ANOTHER RESTRICTED GLOBAL
     NOTE. A beneficial interest in any Restricted Global Note may be
     transferred to a Person who takes delivery thereof in the form of a
     beneficial interest in another Restricted Global Note if the transfer
     complies with the requirements of Section 2.06(b)(2) above and 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 a certificate in the form of Exhibit B hereto,
              including the certifications, certificates and Opinion of Counsel
              required by item (3) thereof, if applicable.

              (4) TRANSFER AND EXCHANGE OF BENEFICIAL INTERESTS IN A RESTRICTED
     GLOBAL NOTE FOR BENEFICIAL INTERESTS IN AN UNRESTRICTED GLOBAL NOTE. A
     beneficial interest in any Restricted Global Note may be exchanged by any
     holder thereof for a beneficial interest in an Unrestricted Global Note or
     transferred to a Person who takes delivery thereof in the form of a
     beneficial interest in an Unrestricted Global Note if the exchange or
     transfer complies with the requirements of Section 2.06(b)(2) above and:

                      (A) such exchange or transfer is effected pursuant to the
              Exchange Offer in accordance with the Registration Rights
              Agreement and the holder of the beneficial interest to be
              transferred, in the case of an exchange, or the transferee, in the
              case of a transfer, certifies in the applicable Letter of
              Transmittal that it is not (i) a Broker-Dealer, (ii) a Person
              participating in the distribution of the Exchange Notes or (iii) a
              Person who is an affiliate (as defined in Rule 144) of the
              Company;

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

                      (C) 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:

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

                              (ii)    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 an
                      Unrestricted Global Note, a certificate from such holder
                      in the form of Exhibit B hereto, including the
                      certifications in item (4) thereof;

                                       26
<Page>

                      and, in each such case set forth in this subparagraph (D),
                      if the Registrar so requests or if the Applicable
                      Procedures so require, 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 and that the restrictions on transfer
                      contained herein and in the Private Placement Legend are
                      no longer required in order to maintain compliance with
                      the Securities Act.

     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 authenticate one or more Unrestricted
Global Notes in an aggregate principal amount equal to the aggregate 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 a Restricted Global Note.

     (c) TRANSFER OR EXCHANGE OF BENEFICIAL INTERESTS FOR DEFINITIVE NOTES.

              (1) BENEFICIAL INTERESTS IN RESTRICTED GLOBAL NOTES TO RESTRICTED
     DEFINITIVE NOTES. If any holder of a beneficial interest in a Restricted
     Global Note proposes to exchange such beneficial interest for a Restricted
     Definitive Note or to transfer such beneficial interest to a Person who
     takes delivery thereof in the form of a Restricted Definitive Note, then,
     upon receipt by the Registrar of the following documentation:

                      (A) if the holder of such beneficial interest in a
              Restricted Global Note proposes to exchange such beneficial
              interest for a Restricted 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, 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
              903 or Rule 904, 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, 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, certificates and Opinion of Counsel required by
              item (3) thereof, if applicable;

                      (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

                                       27
<Page>

                      (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. Any Definitive Note issued in exchange for a beneficial
interest in a Restricted Global Note pursuant to this Section 2.06(c) shall be
registered in such name or names and in such authorized denomination or
denominations as the holder of such beneficial interest 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. Any Definitive Note issued
in exchange for a beneficial interest in a Restricted Global Note pursuant to
this Section 2.06(c)(1) shall bear the Private Placement Legend and shall be
subject to all restrictions on transfer contained therein.

              (2) BENEFICIAL INTERESTS IN RESTRICTED GLOBAL NOTES TO
     UNRESTRICTED DEFINITIVE NOTES. 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 of such beneficial interest, in the case
              of an exchange, or the transferee, in the case of a transfer,
              certifies in the applicable Letter of Transmittal that it is not
              (i) a Broker-Dealer, (ii) a Person participating in the
              distribution of the Exchange Notes or (iii) a Person who is an
              affiliate (as defined in Rule 144) of the Company;

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

                      (C) 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:

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

                              (ii)    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 an Unrestricted Definitive Note, a
                      certificate from such holder in the form of Exhibit B
                      hereto, including the certifications in item (4) thereof;

              and, in each such case set forth in this subparagraph (D), if the
              Registrar so requests or if the Applicable Procedures so require,
              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 and that the restrictions on
              transfer contained herein and in the

                                       28
<Page>

              Private Placement Legend are no longer required in order to
              maintain compliance with the Securities Act.

              (3) BENEFICIAL INTERESTS IN UNRESTRICTED GLOBAL NOTES TO
     UNRESTRICTED DEFINITIVE NOTES. 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)(2) hereof, the
     Trustee will cause the aggregate principal amount of the applicable Global
     Note to be reduced accordingly pursuant to Section 2.06(h) hereof, and the
     Company will execute and the Trustee will authenticate and deliver to the
     Person designated in the instructions a Definitive Note in the appropriate
     principal amount. Any Definitive Note issued in exchange for a beneficial
     interest pursuant to this Section 2.06(c)(3) will be registered in such
     name or names and in such authorized denomination or denominations as the
     holder of such beneficial interest requests through instructions to the
     Registrar from or through the Depositary and the Participant or Indirect
     Participant. The Trustee will deliver such Definitive Notes to the Persons
     in whose names such Notes are so registered. Any Definitive Note issued in
     exchange for a beneficial interest pursuant to this Section 2.06(c)(3) will
     not bear the Private Placement Legend.

     (d) TRANSFER AND EXCHANGE OF DEFINITIVE NOTES FOR BENEFICIAL INTERESTS.

              (1) RESTRICTED DEFINITIVE NOTES TO BENEFICIAL INTERESTS IN
     RESTRICTED GLOBAL NOTES. If any Holder of a Restricted Definitive Note
     proposes to exchange such Note for a beneficial interest in a Restricted
     Global Note or to transfer such Restricted 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:

                      (A) if the Holder of such Restricted Definitive Note
              proposes to exchange such Note 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;

                      (B) if such Restricted Definitive Note is being
              transferred to a QIB in accordance with Rule 144A, a certificate
              to the effect set forth in Exhibit B hereto, including the
              certifications in item (1) thereof;

                      (C) if such Restricted Definitive Note is being
              transferred to a Non-U.S. Person in an offshore transaction in
              accordance with Rule 903 or Rule 904, a certificate to the effect
              set forth in Exhibit B hereto, including the certifications in
              item (2) thereof;

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

                      (E) if such Restricted Definitive Note 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, certificates and Opinion of Counsel
              required by item (3) thereof, if applicable;

                                       29
<Page>

                      (F) if such Restricted Definitive Note 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 Restricted Definitive Note 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 will cancel the Restricted Definitive Note, 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.

              (2) RESTRICTED DEFINITIVE NOTES TO BENEFICIAL INTERESTS IN
     UNRESTRICTED GLOBAL NOTES. A Holder of a Restricted Definitive Note may
     exchange such Note for a beneficial interest in an Unrestricted Global Note
     or transfer such Restricted Definitive Note to a Person who takes delivery
     thereof in the form of a beneficial interest in an 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, certifies in the applicable
              Letter of Transmittal that it is not (i) a Broker-Dealer, (ii) a
              Person participating in the distribution of the Exchange Notes or
              (iii) a Person who is an affiliate (as defined in Rule 144) of the
              Company;

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

                      (C) 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:

                              (i)     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; or

                              (ii)    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, in each such case set forth in this subparagraph (D), if the
              Registrar so requests or if the Applicable Procedures so require,
              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 and that the restrictions on
              transfer contained herein and in the Private Placement Legend are
              no longer required in order to maintain compliance with the
              Securities Act.

                                       30
<Page>

              Upon satisfaction of the conditions of any of the subparagraphs in
     this Section 2.06(d)(2), the Trustee will cancel the Definitive Notes and
     increase or cause to be increased the aggregate principal amount of the
     Unrestricted Global Note.

              (3) UNRESTRICTED DEFINITIVE NOTES TO BENEFICIAL INTERESTS IN
     UNRESTRICTED GLOBAL NOTES. A Holder of an Unrestricted Definitive Note may
     exchange such Note for a beneficial interest in an Unrestricted Global Note
     or transfer such Definitive Notes to a Person who takes delivery thereof in
     the form of a beneficial interest in an Unrestricted Global Note at any
     time. Upon receipt of a request for such an exchange or transfer, the
     Trustee will cancel the applicable Unrestricted Definitive Note and
     increase or cause to be increased the aggregate principal amount of one of
     the Unrestricted Global Notes.

              If any such exchange or transfer from a Definitive Note to a
     beneficial interest is effected pursuant to subparagraphs (2)(B), (2)(D) or
     (3) above at a time when an Unrestricted Global Note has not yet been
     issued, the Company will issue and, upon receipt of an Authentication Order
     in accordance with Section 2.02 hereof, the Trustee will authenticate one
     or more Unrestricted Global Notes in an aggregate principal amount equal to
     the principal amount of Definitive Notes so transferred.

     (e) TRANSFER AND EXCHANGE OF DEFINITIVE NOTES FOR 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 will register the transfer or
exchange of Definitive Notes. Prior to such registration of transfer or
exchange, the requesting Holder must 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 its attorney, duly authorized in writing. In addition, the requesting Holder
must provide any additional certifications, documents and information, as
applicable, required pursuant to the following provisions of this Section
2.06(e).

              (1) RESTRICTED DEFINITIVE NOTES TO RESTRICTED DEFINITIVE NOTES.
     Any Restricted Definitive Note may be transferred to and registered in the
     name of Persons who take delivery thereof in the form of a Restricted
     Definitive Note if the Registrar receives the following:

                      (A) if the transfer will be made pursuant to Rule 144A,
              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 903 or
              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 a certificate in the form of
              Exhibit B hereto, including the certifications, certificates and
              Opinion of Counsel required by item (3) thereof, if applicable.

              (2) RESTRICTED DEFINITIVE NOTES TO UNRESTRICTED DEFINITIVE NOTES.
     Any Restricted Definitive Note may be exchanged by the Holder thereof for
     an Unrestricted Definitive Note or transferred to a Person or Persons who
     take delivery thereof in the form of an Unrestricted Definitive Note if:

                                       31
<Page>

                      (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, certifies in the applicable
              Letter of Transmittal that it is not (i) a broker-dealer, (ii) a
              Person participating in the distribution of the Exchange Notes or
              (iii) 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:

                              (i)     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)(d) thereof; or

                              (ii)    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, in each such case set forth in this subparagraph (D), if the
              Registrar so requests, 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 and that the
              restrictions on transfer contained herein and in the Private
              Placement Legend are no longer required in order to maintain
              compliance with the Securities Act.

              (3) UNRESTRICTED DEFINITIVE NOTES TO UNRESTRICTED DEFINITIVE
     NOTES. 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 to register such a transfer, the
     Registrar shall register the Unrestricted Definitive Notes pursuant to the
     instructions from the Holder thereof.

     (f) EXCHANGE OFFER. Upon the occurrence of the Exchange Offer in accordance
with the Registration Rights Agreement, the Company will issue and, upon receipt
of an Authentication Order in accordance with Section 2.02 hereof, the Trustee
will authenticate:

              (1) 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 accepted for exchange in the Exchange Offer

by Persons that certify in the applicable Letters of Transmittal that (A) they
are not Broker-Dealers, (B) they are not participating in a distribution of the
Exchange Notes and (z) they are not affiliates (as defined in Rule 144) of the
Company; and

              (2) Unrestricted Definitive Notes in an aggregate principal amount
     equal to the principal amount of the Restricted Definitive Notes accepted
     for exchange in the Exchange Offer.

                                       32
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     Concurrently with the issuance of such Notes, the Trustee will cause the
aggregate principal amount of the applicable Restricted Global Notes to be
reduced accordingly, and the Company will execute and the Trustee will
authenticate and deliver to the Persons designated by the Holders of Definitive
Notes so accepted Unrestricted Definitive Notes in the appropriate principal
amount.

     (g) LEGENDS. The following legends will 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.

              (1) 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. THE HOLDER OF THE SECURITY EVIDENCED HEREBY AGREES FOR THE
BENEFIT OF THE ISSUER THAT (A) SUCH SECURITY MAY BE RESOLD, PLEDGED OR OTHERWISE
TRANSFERRED ONLY (1) (a) IN THE UNITED STATES 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) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN ACCORDANCE
WITH RULE 904 UNDER THE SECURITIES ACT, (c) IN A TRANSACTION MEETING THE
REQUIREMENTS OF RULE 144 UNDER THE SECURITIES ACT, (d) TO AN INSTITUTIONAL
"ACCREDITED INVESTOR" (AS DEFINED IN RULE 501 (a) (1), (2), (3) OR (7) OF THE
SECURITIES ACT (AN "INSTITUTIONAL ACCREDITED INVESTOR")) THAT, PRIOR TO SUCH
TRANSFER, FURNISHES THE TRUSTEE A SIGNED LETTER CONTAINING CERTAIN
REPRESENTATIONS AND AGREEMENTS (THE FORM OF WHICH CAN BE OBTAINED FROM THE
TRUSTEE) AND, IF SUCH TRANSFER IS IN RESPECT OF AN AGGREGATE PRINCIPAL AMOUNT OF
NOTES LESS THAN $250,000, AN OPINION OF COUNSEL ACCEPTABLE TO DRS TECHNOLOGIES,
INC. THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT OR (e) IN
ACCORDANCE WITH ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT (AND BASED UPON AN OPINION OF COUNSEL IF DRS TECHNOLOGIES, INC.
SO REQUESTS), (2) TO DRS TECHNOLOGIES, INC. 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)(4), (c)(2),
              (c)(3), (d)(2), (d)(3), (e)(2), (e)(3) or (f) of this

                                       33
<Page>

              Section 2.06 (and all Notes issued in exchange therefor or
              substitution thereof) will not bear the Private Placement Legend.

              (2) GLOBAL NOTE LEGEND. Each Global Note will 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 (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED
PURSUANT TO SECTION 2.06 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED
IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE INDENTURE, (3) THIS
GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION
2.11 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR
DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE
FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A
NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR
ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A
SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. UNLESS THIS
CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY (55 WATER STREET, NEW YORK, NEW YORK) ("DTC"), TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR SUCH OTHER ENTITY AS MAY BE REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN."

     (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 will 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 will be
reduced accordingly and an endorsement will 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 will be increased accordingly and
an endorsement will 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.

              (1) To permit registrations of transfers and exchanges, the
     Company will execute and the Trustee will authenticate Global Notes and
     Definitive Notes upon receipt of an Authentication Order in accordance with
     Section 2.02 or at the Registrar's request.

                                       34
<Page>

              (2) No service charge will 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, 3.09, 4.10, 4.15 and 9.05 hereof).

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

              (4) All Global Notes and Definitive Notes issued upon any
     registration of transfer or exchange of Global Notes or Definitive Notes
     will 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.

              (5) Neither the Registrar nor the Company will be required:

                      (A) to issue, to register the transfer of or to exchange
              any 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
              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.

              (6) 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.

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

              (8) All certifications, certificates and Opinions of Counsel
     required to be submitted to the Registrar pursuant to this Section 2.06 to
     effect a registration of transfer or exchange may be submitted by
     facsimile.

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 will issue and the Trustee, upon receipt of an
Authentication Order, will 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.

                                       35
<Page>

     Every replacement Note is an additional obligation of the Company and will
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; however, Notes held by the Company or a Subsidiary of the Company
shall not be deemed to be outstanding for purposes of Section 3.07(a) hereof.

     If a Note is replaced pursuant to Section 2.07 hereof, it ceases to be
outstanding.

     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 will
be deemed to be no longer outstanding and will 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 any Guarantor, or by any Person directly or indirectly controlling or
controlled by or under direct or indirect common control with the Company or any
Guarantor, will be considered as though not outstanding, except that for the
purposes of determining whether the Trustee will be protected in relying on any
such direction, waiver or consent, only Notes that a Responsible Officer of the
Trustee actually knows are so owned will be so disregarded.

Section 2.10  TEMPORARY NOTES.

     Until certificates representing Notes are ready for delivery, the Company
may prepare and the Trustee, upon receipt of an Authentication Order, will
authenticate temporary Notes. Temporary Notes will be substantially in the form
of certificated Notes but may have variations that the Company considers
appropriate for temporary Notes and as may be reasonably acceptable to the
Trustee. Without unreasonable delay, the Company will prepare and the Trustee
will authenticate definitive Notes in exchange for temporary Notes.

     Holders of temporary Notes will 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 will forward to the Trustee any Notes surrendered
to them for registration of transfer, exchange or payment. The Trustee and no
one else will cancel all Notes surrendered for registration of transfer,
exchange, payment, replacement or cancellation and will dispose of such canceled
Notes (subject to the record retention requirement of the Exchange Act in its
customary manner). Certification of the destruction of all canceled Notes will
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.

                                       36
<Page>

Section 2.12  DEFAULTED INTEREST.

     If the Company defaults in a payment of interest on the Notes, it will pay
the defaulted interest in any lawful manner plus, to the extent lawful, interest
payable on the 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 will 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 will fix or cause to be fixed each such
special record date and payment date, PROVIDED that no such special record date
may 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) will 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.

                                   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 must furnish to the Trustee, at least 30
days but not more than 60 days before a redemption date, an Officers'
Certificate setting forth:

              (1) the clause of this Indenture pursuant to which the redemption
     shall occur;

              (2) the redemption date;

              (3) the principal amount of Notes to be redeemed;

              (4) the redemption price; and

              (5) applicable cusip numbers.

Section 3.02  SELECTION OF NOTES TO BE REDEEMED OR PURCHASED.

     If less than all of the Notes are to be redeemed or purchased in an offer
to purchase at any time, the Trustee will select Notes for redemption or
purchase as follows:

              (1) if the Notes are listed on any national securities exchange,
     in compliance with the requirements of the principal national securities
     exchange on which the Notes are listed; or

              (2) if the Notes are not listed on any national securities
     exchange, on a PRO RATA basis, by lot or by such method as the Trustee
     shall deem fair and appropriate.

     In the event of partial redemption or purchase by lot, the particular Notes
to be redeemed or purchased will be selected, unless otherwise provided herein,
not less than 30 nor more than 60 days prior to the redemption or purchase date
by the Trustee from the outstanding Notes not previously called for redemption
or purchase.

     The Trustee will promptly notify the Company in writing of the Notes
selected for redemption or purchase and, in the case of any Note selected for
partial redemption or purchase, the principal amount thereof to be redeemed or
purchased. Notes and portions of Notes selected will be in amounts of $1,000

                                       37
<Page>

or whole multiples of $1,000; except that if all of the Notes of a Holder are to
be redeemed or purchased, the entire outstanding amount of Notes held by such
Holder, even if not a multiple of $1,000, shall be redeemed or purchased. Except
as provided in the preceding sentence, provisions of this Indenture that apply
to Notes called for redemption or purchase also apply to portions of Notes
called for redemption or purchase.

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 will 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, except that redemption notices may
be mailed more than 60 days prior to a redemption date if the notice is issued
in connection with a defeasance of the Notes or a satisfaction and discharge of
this Indenture pursuant to Articles 8 or 12 of this Indenture.

     The notice will identify the Notes to be redeemed and will state:

              (1) the redemption date;

              (2) the redemption price;

              (3) 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 will be issued upon cancellation of the
     original Note;

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

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

              (6) 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;

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

              (8) 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 will give the notice of redemption in
the Company's name and at its expense; PROVIDED, HOWEVER, that the Company has
delivered to the Trustee, at least 30 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.

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.

                                       38
<Page>

Section 3.05  DEPOSIT OF REDEMPTION OR PURCHASE PRICE.

     One Business Day prior to the redemption or purchase date, the Company will
deposit with the Trustee or with the Paying Agent money sufficient to pay the
redemption or purchase price of and accrued interest and Liquidated Damages, if
any, on all Notes to be redeemed or purchased on that date. The Trustee or the
Paying Agent will 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 or purchase price of, and accrued interest and Liquidated
Damages, if any, on, all Notes to be redeemed or purchased.

     If the Company complies with the provisions of the preceding paragraph, on
and after the redemption or purchase date, interest will cease to accrue on the
Notes or the portions of Notes called for redemption or purchase. If a Note is
redeemed or purchased 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 or purchase is
not so paid upon surrender for redemption or purchase because of the failure of
the Company to comply with the preceding paragraph, interest shall be paid on
the unpaid principal, from the redemption or purchase 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 OR PURCHASED IN PART.

     Upon surrender of a Note that is redeemed or purchased in part, the Company
will issue and, upon receipt of an Authentication Order, the Trustee will
authenticate for the Holder at the expense of the Company a new Note equal in
principal amount to the unredeemed or unpurchased portion of the Note
surrendered.

Section 3.07  OPTIONAL REDEMPTION.

     (a) At any time prior to November 1, 2006, the Company may on any one or
more occasions redeem up to 35% of the aggregate principal amount of Notes
issued under this Indenture at a redemption price of 106.875% of the principal
amount thereof, plus accrued and unpaid interest and Liquidated Damages, if any,
to, but excluding, the redemption date, with the net cash proceeds of one or
more Equity Offerings; PROVIDED that:

              (1) at least 65% of the aggregate principal amount of Notes
     originally issued under this Indenture (excluding Notes held by the Company
     and its Subsidiaries) remains outstanding immediately after the occurrence
     of such redemption; and

              (2) the redemption occurs within 120 days of the date of the
     closing of such Equity Offering.

     Except pursuant to the preceding paragraph and the Escrow Agreement, the
Notes will not be redeemable at the Company's option prior to November 1, 2008.

On or after November 1, 2008, the Company may redeem all or a part of the Notes
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 Liquidated Damages, if any on the Notes redeemed, to, but
excluding, the applicable redemption date, if redeemed during the twelve-month
period beginning on

                                       39
<Page>

November 1 of the years indicated below, subject to the rights of Noteholders on
the relevant record date to receive interest on the relevant interest payment
date:

<Table>
<Caption>
     Year                                                       Percentage
     ----                                                       ----------
     <S>                                                           <C>
     2008.......................................................   103.438%
     2009.......................................................   102.292%
     2010.......................................................   101.146%
     2011 and thereafter........................................   100.000%
</Table>

Unless the Company defaults in the payment of the redemption price, interest
will cease to accrue on the Notes or portions thereof called for redemption on
the applicable redemption date

     (b) Any redemption pursuant to this Section 3.07 shall be made pursuant to
the provisions of Section 3.01 through 3.06 hereof.

Section 3.08  MANDATORY REDEMPTION.

     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 is required
to commence an offer to all Holders to purchase Notes (an "ASSET SALE OFFER"),
it will follow the procedures specified below.

     The Asset Sale Offer shall be made to all Holders and all holders of other
Indebtedness that is PARI PASSU with the Notes containing provisions similar to
those set forth in this Indenture with respect to offers to purchase or redeem
with the proceeds of sales of assets. The Asset Sale Offer will remain open for
a period of at least 20 Business Days following its commencement and not more
than 30 Business Days, except to the extent that a longer period is required by
applicable law (the "OFFER PERIOD"). No later than three Business Days after the
termination of the Offer Period (the "PURCHASE DATE"), the Company will apply
all Excess Proceeds (the "OFFER AMOUNT") to the purchase of Notes and such other
PARI PASSU Indebtedness (on a PRO RATA basis, if applicable) or, if less than
the Offer Amount has been tendered, all Notes and other Indebtedness tendered in
response to the Asset Sale Offer. Payment for any Notes so purchased will 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 and
Liquidated Damages, if any, will 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 will be payable to Holders who tender Notes pursuant to the Asset Sale
Offer.

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

              (1) 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 will remain open;

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

                                       40
<Page>

              (3) that any Note not tendered or accepted for payment will
     continue to accrue interest;

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

              (5) that Holders electing to have a Note purchased pursuant to an
     Asset Sale Offer may elect to have Notes purchased in integral multiples of
     $1,000 only;

              (6) that Holders electing to have Notes purchased pursuant to any
     Asset Sale Offer will be required to surrender the Note, with the form
     entitled "Option of Holder to Elect Purchase" attached to the Notes
     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;

              (7) that Holders will 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 telegram,
     telex, 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;

              (8) that, if the aggregate principal amount of Notes and other
     PARI PASSU Indebtedness surrendered by holders thereof exceeds the Offer
     Amount, the Company will select the Notes and other PARI PASSU Indebtedness
     to be purchased on a PRO RATA basis based on the principal amount of Notes
     and such other PARI PASSU Indebtedness surrendered (with such adjustments
     as may be deemed appropriate by the Company so that only Notes in
     denominations of $1,000, or integral multiples thereof, will be purchased);
     and

              (9) that Holders whose Notes were purchased only in part will 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 will, 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 will
deliver or cause to be delivered to the Trustee the Notes properly accepted
together with 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, will promptly (but in any case not later than seven 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, will promptly issue a new Note, and the Trustee,
upon written request from the Company will authenticate and mail or deliver (or
cause to be transferred by book entry) 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 will publicly announce the results of the Asset Sale
Offer on the Purchase Date.

     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

                                       41
<Page>

Section 4.01  PAYMENT OF NOTES.

     The Company will pay or cause to be paid the principal of, premium, if any,
and interest and Liquidated Damages, if any, on the Notes on the dates and in
the manner provided in the Notes. Principal, premium, if any, and interest and
Liquidated Damages, if any will 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 will pay all Liquidated Damages, if
any, in the same manner on the dates and in the amounts set forth in the
Registration Rights Agreement.

     The Company will pay interest (including post-petition interest in any
proceeding under any Bankruptcy Law) on overdue principal at the rate equal to
1% per annum in excess of the then applicable interest rate on the Notes to the
extent lawful; it will pay interest (including post-petition interest in any
proceeding under any Bankruptcy Law) on overdue installments of interest and
Liquidated Damages (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 will 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 will 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
fails to maintain any such required office or agency or fails 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 will 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 will 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 hereof.

Section 4.03  REPORTS.

     (a) Whether or not required by the SEC's rules and regulations, so long as
any Notes are outstanding, the Company will file with the SEC and provide to the
Trustee, within the time periods specified in the SEC's rules and regulations:

              (1) all quarterly and annual reports that would be required to be
     filed with the SEC on Forms 10-Q and 10-K if the Company were required to
     file such reports; and

              (2) all current reports that would be required to be filed with
     the SEC on Form 8-K if the Company were required to file such reports.

                                       42
<Page>

All such reports will be prepared in all material respects in accordance with
the rules and regulations applicable to such reports. Each annual report on Form
10-K will include a report on the Company's consolidated financial statements by
the Company's certified independent accountants. In addition, the Company will
file a copy of each of the reports referred to in clauses (1) and (2) above with
the SEC for public availability within the time periods specified in the rules
and regulations applicable to such reports (unless the SEC will not accept such
a filing) and will post the reports on its website within the time periods
specified in this Indenture. 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).

     (b) If the Company has designated any of its Subsidiaries as Unrestricted
Subsidiaries, then the quarterly and annual financial information required by
the preceding paragraph will include a presentation, either on the face of the
financial statements or in the footnotes thereto, and in Management's Discussion
and Analysis of Financial Condition and Results of Operations, of the financial
condition and results of operations of the Company and its Restricted
Subsidiaries separate from the financial condition and results of operations of
the Unrestricted Subsidiaries of the Company.

     (c) If, at any time, the Company is no longer subject to the periodic
reporting requirements of the Exchange Act for any reason, the Company will
nevertheless continue filing the reports specified in the preceding paragraph
with the SEC within the time periods specified above unless the SEC will not
accept such a filing. The Company agrees that it will not take any action for
the purpose of causing the SEC not to accept any such filings. If,
notwithstanding the foregoing, the SEC will not accept the Company's filings for
any reason, the Company will post the reports referred to in Section 4.03(b) on
its website within the time periods that would apply if the Company were
required to file those reports with the SEC.

     (d) In addition, the Company and the Guarantors agree that, for so long as
any Notes remain outstanding, at any time it they are not required to file the
reports required by the preceding paragraphs with the SEC, they will furnish to
the Holders and to securities analysts and prospective investors, upon their
request, the information required to be delivered pursuant to Rule 144A(d)(4)
under the Securities Act.

Section 4.04  COMPLIANCE CERTIFICATE.

     (a) The Company and each Guarantor (to the extent that such Guarantor is so
required under the TIA) 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 has 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
proposes to take with respect thereto).

     (b) So long as any of the Notes are outstanding, the Company will deliver
to the Trustee, forthwith upon 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.

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Section 4.05  TAXES.

     The Company will pay, and will 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 the Company and
each of the Guarantors (to the extent that it may lawfully do so) 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.

     (a) The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly:

              (1) 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 any
     of its Restricted Subsidiaries) or to the direct or indirect holders of the
     Company's or any of its Restricted Subsidiaries' Equity Interests in their
     capacity as such (other than dividends or distributions payable in Equity
     Interests (other than Disqualified Stock) of the Company and other than
     dividends or distributions payable to the Company or a Restricted
     Subsidiary of the Company);

              (2) 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;

              (3) make any payment on or with respect to, or purchase, redeem,
     defease or otherwise acquire or retire for value any Indebtedness of the
     Company or any Guarantor that is contractually subordinated to the Notes or
     to any Subsidiary Guarantee (excluding any intercompany Indebtedness
     between or among the Company and any of its Restricted Subsidiaries),
     except a payment of interest or principal at the Stated Maturity thereof;
     or

              (4) make any Restricted Investment (all such payments and other
     actions set forth in these clauses (1) through (4) above being collectively
     referred to as "Restricted Payments"),

              unless, at the time of and after giving effect to such Restricted
     Payment:

              (1) no Default or Event of Default has occurred and is continuing
     or would occur as a consequence of such Restricted Payment;

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              (2) 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 hereof; and

              (3) such Restricted Payment, together with the aggregate amount of
     all other Restricted Payments made by the Company and its Restricted
     Subsidiaries since the date of this Indenture (excluding Restricted
     Payments permitted by clauses (2), (3), (4), (6), (7), (8), (9), (10), (11)
     and (12) of paragraph (b) below) , is less than the sum, without
     duplication, of:

                      (A) 50% of the Consolidated Net Income of the Company for
              the period (taken as one accounting period) from the beginning of
              the quarter during which the initial issue date of the Notes under
              this Indenture occurs 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

                      (B) 100% of the aggregate net cash proceeds received by
              the Company since the date of this Indenture as a contribution to
              its common equity capital or from the issue or sale of Equity
              Interests of the Company including the payment of the exercise
              price of options and warrants (other than Disqualified Stock) or
              from the issue or sale of convertible or exchangeable Disqualified
              Stock or convertible or exchangeable debt securities of the
              Company that have been converted into or exchanged for such Equity
              Interests (other than Equity Interests (or Disqualified Stock or
              debt securities) sold to a Subsidiary of the Company); PLUS

                      (C) to the extent that any Restricted Investment that was
              made after the date of this Indenture is sold for cash or
              otherwise liquidated or repaid for cash, the greater of (i) the
              cash return of capital with respect to such Restricted Investment
              (less the cost of disposition, if any) and (ii) the initial amount
              of such Restricted Investment; PLUS

                      (D) to the extent that any Unrestricted Subsidiary of the
              Company designated as such after the date of this Indenture is
              redesignated as a Restricted Subsidiary after the date of this
              Indenture, the greater of (i) the Fair Market Value of the
              Company's Investment in such Subsidiary as of the date of such
              redesignation or (ii) such Fair Market Value as of the date on
              which such Subsidiary was originally designated as an Unrestricted
              Subsidiary after the date of this Indenture; PLUS

                      (E) 50% of any dividends received by the Company or a
              Restricted Subsidiary of the Company that is a Guarantor after the
              date of this Indenture from an Unrestricted Subsidiary of the
              Company, to the extent that such dividends were not otherwise
              included in Consolidated Net Income of the Company for such
              period.

     (b) So long as no Default has occurred and is continuing or would be caused
thereby, the preceding provisions of Section 4.07(a) will not prohibit:

              (1) the payment of any dividend within 60 days after the date of
     declaration of the dividend, if at the date of declaration the dividend
     payment would have complied with the provisions of this Indenture;

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              (2) the making of any Restricted Payment in exchange for, or out
     of the net cash proceeds of the substantially concurrent sale (other than
     to a Subsidiary of the Company) of, Equity Interests of the Company (other
     than Disqualified Stock) or from the substantially concurrent contribution
     of common equity capital to the Company; provided that the amount of any
     such net cash proceeds that are utilized for any such Restricted Payment
     will be excluded from clause (3)(B) of the preceding paragraph;

              (3) the defeasance, redemption, repurchase or other acquisition of
     Indebtedness of the Company or any Guarantor that is contractually
     subordinated to the notes or to any Subsidiary Guarantee with the net cash
     proceeds from a substantially concurrent incurrence of Permitted
     Refinancing Indebtedness;

              (4) the payment of any dividend (or, in the case of any
     partnership or limited liability company, any similar distribution) by a
     Restricted Subsidiary of the Company to the holders of its Equity Interests
     on a pro rata basis;

              (5) the repurchase, redemption or other acquisition or retirement
     for value of any Equity Interests of the Company or any Restricted
     Subsidiary of the Company held by any current or former officer, director,
     employee or consultant of the Company or any Restricted Subsidiary (or any
     permitted transferees of such persons) of the Company pursuant to any
     equity subscription agreement, stock option agreement, shareholders'
     agreement or similar agreement; provided that the aggregate price paid for
     all such repurchased, redeemed, acquired or retired Equity Interests may
     not exceed $1.5 million in any twelve-month period, provided, that the
     Company may carry forward and make in a subsequent twelve-month period, in
     addition to the amounts permitted for such twelve-month period, the amount
     of such repurchase, redemptions or other acquisitions or retirements for
     value permitted to have been made but not made in any preceding
     twelve-month period up to a maximum of $3.0 million in any twelve-month
     period;

              (6) the repurchase of Equity Interests deemed to occur upon the
     exercise of stock options to the extent such Equity Interests represent a
     portion of the exercise price of those stock options;

              (7) the declaration and payment of regularly scheduled or accrued
     dividends to holders of any class or series of Disqualified Stock of the
     Company or any Restricted Subsidiary of the Company issued on or after the
     date of this Indenture in accordance with the Fixed Charge Coverage test
     described in Section 4.09 hereof;

              (8) make cash payments in lieu of the issuance of fractional
     shares in an aggregate amount not to exceed $2.5 million in any
     twelve-month period;

              (9) the repayment of intercompany debt, the incurrence of which
     was permitted pursuant to Section 4.09 hereof;

              (10) payments made in connection with the IDT Merger;

              (11) satisfaction of change of control obligations on subordinated
     obligations once the Company has fulfilled its obligations relating to a
     Change of Control under this Indenture; and

              (12) other Restricted Payments in an aggregate amount not to
     exceed $20.0 million since the date of this Indenture.

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     The amount of all Restricted Payments (other than cash) will 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 assets or securities that are required to be valued by this
Section 4.07 will be determined by the Board of Directors whose resolution with
respect thereto will be delivered to the Trustee. The Board of Directors'
determination must be based upon an opinion or appraisal issued by an
accounting, appraisal or investment banking firm of national standing if the
Fair Market Value exceeds $15.0 million.

Section 4.08  DIVIDEND AND OTHER PAYMENT RESTRICTIONS AFFECTING SUBSIDIARIES.

     (a) The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, create or permit to exist or become
effective any consensual encumbrance or restriction on the ability of any
Restricted Subsidiary to:

              (1) pay dividends or make any other distributions on its Capital
     Stock to the Company or any of its Restricted Subsidiaries, or with respect
     to any other interest or participation in, or measured by, its profits, or
     pay any indebtedness owed to the Company or any of its Restricted
     Subsidiaries;

              (2) make loans or advances to the Company or any of its Restricted
     Subsidiaries; or

              (3) sell, lease or transfer any of its properties or assets to the
     Company or any of its Restricted Subsidiaries.

     (b) The restrictions in Section 4.08(a) will not apply to encumbrances or
restrictions existing under or by reason of:

              (1) the Credit Agreement and related agreements and any
     amendments, modifications, restatements, renewals, increases, supplements,
     refundings, replacements or refinancings of those agreements; provided that
     the amendments, modifications, restatements, renewals, increases,
     supplements, refundings, replacements or refinancings are not materially
     more restrictive, taken as a whole, with respect to such dividend and other
     payment restrictions than those contained in those agreements as of the
     later of the date thereof or the date of this Indenture;

              (2) agreements governing Existing Indebtedness and Credit
     Facilities as in effect on the date of this Indenture and any amendments,
     modifications, restatements, renewals, increases, supplements, refundings,
     replacements or refinancings of those agreements; provided that the
     amendments, modifications, restatements, renewals, increases, supplements,
     refundings, replacements or refinancings are not materially more
     restrictive, taken as a whole, with respect to such dividend and other
     payment restrictions than those contained in those agreements on the date
     of this Indenture;

              (3) this Indenture, the Notes and the Subsidiary Guarantees;

              (4) applicable law, rule, regulation or order, approval, license,
     permit or similar restriction;

              (5) 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 or Capital Stock was incurred in connection with or in

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     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;

              (6) customary non-assignment provisions in contracts, leases and
     licenses entered into in the ordinary course of business;

              (7) purchase money obligations for property acquired in the
     ordinary course of business and Capital Lease Obligations that impose
     restrictions on the property purchased or leased of the nature described in
     clause (3) of Section 4.08(a);

              (8) any agreement for the sale or other disposition of a
     Restricted Subsidiary that restricts distributions by that Restricted
     Subsidiary pending the sale or other disposition;

              (9) 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;

              (10) Liens permitted to be incurred under the provisions of
     Section 4.12 hereof that limit the right of the debtor to dispose of the
     assets subject to such Liens;

              (11) provisions limiting the disposition or distribution of assets
     or property in joint venture agreements, asset sale agreements,
     sale-leaseback agreements, stock sale agreements and other similar
     agreements entered into in the ordinary course of business;

              (12) encumbrances on property that exist at the time the property
     was acquired by the Company or a Restricted Subsidiary; and

              (13) restrictions on cash or other deposits or net worth imposed
     by customers under contracts entered into in the ordinary course of
     business.

Section 4.09  INCURRENCE OF INDEBTEDNESS AND ISSUANCE OF PREFERRED STOCK.

     (a) The Company will not, and will 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 the Company will not issue any Disqualified Stock and will not permit
any of its Restricted Subsidiaries to issue any shares of preferred stock;
provided, however, that the Company may incur Indebtedness (including Acquired
Debt) or issue Disqualified Stock, and the Guarantors may incur Indebtedness or
issue 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 Disqualified Stock or preferred stock is issued
would have been at least 2.0 to 1, 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 Disqualified Stock or preferred stock had
been issued, as the case may be, at the beginning of such four-quarter period.

     (b) The provisions of Section 4.09(a) will not prohibit the incurrence of
any of the following items of Indebtedness (collectively, "PERMITTED DEBT"):

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              (1) the incurrence by the Company and any Guarantor of additional
     Indebtedness and letters of credit under Credit Facilities in an aggregate
     principal amount at any one time outstanding under this clause (1) (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) not to exceed the greater of (x) $425.0 million and (y) the sum
     of (A) $100.0 million and (B) the Borrowing Base as of the date of such
     incurrence, in the case of clauses (x) and (y)(A) LESS the aggregate amount
     of all Net Proceeds of Asset Sales applied by the Company or any of its
     Restricted Subsidiaries since the date of this Indenture to repay any term
     Indebtedness under a Credit Facility or to repay any revolving credit
     Indebtedness under a Credit Facility and effect a corresponding commitment
     reduction thereunder pursuant to Section 4.10 hereof; PROVIDED that the
     guarantee by Laurel Technologies Partnership (dba DRS Laurel Technologies)
     and MSSC LP of additional Indebtedness and letters of credit under Credit
     Facilities shall be permitted by this clause (1) in the amount set forth in
     this Section 4.09(b)(1);

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

              (3) the incurrence by the Company and the Guarantors of
     Indebtedness represented by the Notes and the related Subsidiary Guarantees
     to be issued on the date of this Indenture and the Exchange Notes and the
     related Subsidiary Guarantees to be issued pursuant to the Registration
     Rights Agreement;

              (4) the incurrence by the Company or any of its Restricted
     Subsidiaries of Indebtedness represented by Capital Lease Obligations,
     mortgage financings or purchase money obligations, synthetic leases or the
     Attributable Debt with respect to sale and leaseback transactions, in each
     case, incurred for the purpose of financing all or any part of the purchase
     price or cost of design, construction, installation or improvement of
     property, plant or equipment used in the business of the Company or any of
     its Restricted Subsidiaries, in an aggregate principal amount, including
     all Permitted Refinancing Indebtedness incurred to refund, refinance,
     replace, defease or discharge any Indebtedness incurred pursuant to this
     clause (4), not to exceed the greater of $35.0 million and 5% of
     Consolidated Tangible Assets at any time outstanding;

              (5) 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, replace, defease or
     discharge Indebtedness (other than intercompany Indebtedness) that was
     permitted by this Indenture to be incurred under Section 4.09(a) or clauses
     (2), (3), (4), (5) or (13) of this Section 4.09(b);

              (6) 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 or any Guarantor is the obligor on such
              Indebtedness and the payee is not the Company or a Guarantor, such
              Indebtedness must be expressly subordinated to the prior payment
              in full in cash of all Obligations then due with respect to the
              Notes, in the case of the Company, or the Subsidiary Guarantee, in
              the case of a Guarantor; and

                      (B) (i) any subsequent issuance or transfer of Equity
              Interests that results in any such Indebtedness being held by a
              Person other than the Company or a Restricted

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              Subsidiary of the Company and (ii) any sale or other transfer of
              any such Indebtedness to a Person that is not either the Company
              or a Restricted Subsidiary of the Company,

will be deemed, in each case, to constitute an incurrence of such Indebtedness
by the Company or such Restricted Subsidiary, as the case may be, that was not
permitted by this clause (6);

              (7) the issuance by any of the Company's Restricted Subsidiaries
     to the Company or to any of its Restricted Subsidiaries of shares of
     preferred stock; PROVIDED, HOWEVER, that:

                      (a) any subsequent issuance or transfer of Equity
     Interests that results in any such preferred stock being held by a Person
     other than the Company or a Restricted Subsidiary of the Company; and

                      (b) any sale or other transfer of any such preferred stock
     to a Person that is not either the Company or a Restricted Subsidiary of
     the Company,

will be deemed, in each case, to constitute an issuance of such preferred stock
by such Restricted Subsidiary that was not permitted by this clause (7);

              (8) the incurrence by the Company or any of its Restricted
     Subsidiaries of Hedging Obligations in the ordinary course of business;

              (9) 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 covenant;
     PROVIDED that if the Indebtedness being guaranteed is subordinated to or
     PARI PASSU with the Notes, then the guarantee shall be subordinated to the
     same extent as the Indebtedness guaranteed;

              (10) the incurrence by the Company or any of its Restricted
     Subsidiaries of Indebtedness in respect of workers' compensation claims,
     self-insurance obligations, bankers' acceptances, performance and surety
     bonds, completion guarantees or similar arrangements in the ordinary course
     of business;

              (11) the incurrence by the Company or any of its Restricted
     Subsidiaries of Indebtedness arising from the honoring by a bank or other
     financial institution of a check, draft or similar instrument inadvertently
     drawn against insufficient funds, so long as such Indebtedness is covered
     within five Business Days;

              (12) the incurrence by Foreign Subsidiaries of Indebtedness in an
     aggregate principal amount at any time outstanding pursuant to this clause
     (12), including all Permitted Refinancing Indebtedness incurred to refund,
     refinance, defease, renew, extend or replace Indebtedness incurred pursuant
     to this clause (12), not to exceed the greater of (x) $25.0 million and (y)
     the Foreign Borrowing Base as of the date of such incurrence, (in the case
     of (x) and (y), or the equivalent thereof, measured at the time of each
     incurrence, in applicable foreign currency);

              (13) Indebtedness of a Subsidiary incurred and outstanding on or
     prior to the date on which such Subsidiary was acquired by the Company
     (other than Indebtedness incurred in contemplation of, or in connection
     with, the transaction or series of related transactions pursuant to which
     such Subsidiary became a Subsidiary of or was otherwise acquired by the
     Company); provided, however, that for any such Indebtedness outstanding at
     any time under this clause (13), in excess of $20.0 million, on the date
     that such Subsidiary is acquired by the Company, the

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     Company would have been able to incur $1.00 of additional Indebtedness
     pursuant Section 4.09(a) hereof after giving effect to the incurrence of
     such Indebtedness pursuant to this clause (13);

              (14) Indebtedness arising from agreements of the Company or a
     Restricted Subsidiary providing for indemnification, adjustment of purchase
     price, earn-out or similar obligations, in each case, incurred or assumed
     in connection with the acquisition or disposition of any businesses or
     assets of the Company or any Restricted Subsidiary otherwise permitted in
     accordance with this Indenture; and

              (15) the incurrence by the Company or any Restricted Subsidiary of
     additional Indebtedness in an aggregate principal amount (or accreted
     value, as applicable) at any time outstanding, including all Permitted
     Refinancing Indebtedness incurred to refund, refinance, replace, defease or
     discharge any Indebtedness incurred pursuant to this clause (15), not to
     exceed $35.0 million.

For purposes of determining compliance with this Section 4.09, in the event that
an item of proposed Indebtedness meets the criteria of more than one of the
categories of Permitted Debt described in clauses (1) through (15) above or is
entitled to be incurred pursuant to Section 4.09(a), the Company will be
permitted to classify such item of Indebtedness on the date of its incurrence,
and will only be required to include the amount and type of such Indebtedness in
one of the above clauses, although the Company may divide and classify an item
of Indebtedness in more than one of the types of Indebtedness, or later
reclassify all or a portion of such item of Indebtedness, in any manner that
complies with this Section 4.09. Indebtedness under Credit Facilities
outstanding on the date on which Notes are first issued and authenticated under
this Indenture will initially be deemed to have been incurred on such date in
reliance on the exception provided by clause (1) of the definition of Permitted
Debt. The accrual of interest, the accretion or amortization of original issue
discount, the payment of interest on any Indebtedness in the form of additional
Indebtedness with the same terms, and the payment of dividends on Disqualified
Stock in the form of additional shares of the same class of Disqualified Stock
will not be deemed to be an incurrence of Indebtedness or an issuance of
Disqualified Stock for purposes of this Section 4.09; provided, in each such
case, that the amount thereof is included in Fixed Charges of the Company as
accrued. Notwithstanding any other provision of this Section 4.09, the maximum
amount of Indebtedness that the Company or any Restricted Subsidiary may incur
pursuant to this Section 4.09 shall not be deemed to be exceeded solely as a
result of fluctuations in exchange rates or currency values.

     The amount of any Indebtedness outstanding as of any date will be:

              (1) the accreted value of the Indebtedness, in the case of any
     Indebtedness issued with original issue discount;

              (2) the principal amount of the Indebtedness, in the case of any
     other Indebtedness; and

              (3) in respect of Indebtedness of another person secured by a Lien
     on the assets of the specified person, the lesser of:

                      (A) the Fair Market Value of such an asset at the date of
              determination, and

                      (B) the amount of the Indebtedness of the other Person.

Section 4.10  ASSET SALES.

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     The Company will not, and will not permit any of its Restricted
Subsidiaries to, consummate an Asset Sale unless:

              (1) the Company (or the Restricted Subsidiary, as the case may be)
     receives consideration at the time of the Asset Sale at least equal to the
     Fair Market Value of the assets or Equity Interests issued or sold or
     otherwise disposed of; and

              (2) at least 75% of the consideration received in the Asset Sale
     by the Company or such Restricted Subsidiary is in the form of cash or Cash
     Equivalents, PROVIDED that if the aggregate consideration received in the
     Asset Sale is less than $7.5 million, this condition will be satisfied if
     at least 70% of the consideration received in the Asset Sale by the Company
     or such Restricted Subsidiary is in the form of cash or Cash Equivalents.
     For purposes of this provision, each of the following shall be deemed to be
     cash:

                      (A) any liabilities of the Company or any Restricted
              Subsidiary (other than contingent liabilities and liabilities that
              are by their terms subordinated to the Notes or any Subsidiary
              Guarantee) that are assumed by the transferee of any such assets
              and as a result of which the Company or such Restricted Subsidiary
              is released from further liability;

                      (B) any securities, notes or other obligations received by
              the Company or any such Restricted Subsidiary from such transferee
              that are within 90 days, converted by the Company or such
              Restricted Subsidiary into cash or Cash Equivalents, to the extent
              of the cash or Cash Equivalents received in that conversion; and

                      (C) any stock or assets of the kind referred to in clauses
              (2) or (4) of the next paragraph of this Section 4.10.

     Within 365 days after the receipt of any Net Proceeds from an Asset Sale,
the Company (or the applicable Restricted Subsidiary, as the case may be) may
apply those Net Proceeds at its option:

              (1) to repay Senior Debt and, if the Senior Debt repaid is
     revolving credit Indebtedness, to correspondingly reduce commitments with
     respect thereto;

              (2) to acquire all or substantially all of the assets of, or any
     Capital Stock of, another Permitted Business, if, after giving effect to
     any such acquisition of Capital Stock, the Permitted Business is or becomes
     a Restricted Subsidiary of the Company;

              (3) to make a capital expenditure; or

              (4) to acquire other assets that are not classified as current
     assets under GAAP and that are used or useful in a Permitted Business,

or enter into a binding commitment regarding clauses (2), (3) or (4) above,
PROVIDED that such binding commitment shall be treated as a permitted
application of Net Proceeds from the date of such commitment until and only
until the earlier of (x) the date on which such acquisitions or expenditure is
consummated and (y) the 180th day following the expiration of the aforementioned
365 day period. If such acquisition or expenditure is not consummated on or
before such 180th day and the Company or such Restricted Subsidiary shall not
have applied such Net Proceeds pursuant to clause (1)-(4) of this paragraph on
or before such 180th day, such commitment shall be deemed not to have been a
permitted application of Net Proceeds.

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     Pending the final application of any such Net Proceeds, the Company may
temporarily reduce revolving credit borrowings 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 preceding paragraph will constitute "EXCESS PROCEEDS." When the
aggregate amount of Excess Proceeds exceeds $15.0 million, the Company will make
an Asset Sale Offer to all Holders of Notes and all holders of other
Indebtedness that is PARI PASSU with the Notes containing provisions similar to
those set forth in this Indenture with respect to offers to purchase or redeem
with the proceeds of sales of assets in accordance with Section 3.09 hereof to
purchase the maximum principal amount of Notes and such other PARI PASSU
Indebtedness that may be purchased out of the Excess Proceeds. The offer price
in any Asset Sale Offer will be equal to 100% of principal amount plus accrued
and unpaid interest and Liquidated Damages, if any, to, but excluding, the date
of purchase, and will be payable in cash (subject to the right of Holders to
receive interest due on the relevant interest payment date). If any Excess
Proceeds remain after consummation of an Asset Sale Offer, the Company may use
such Excess Proceeds for any purpose not otherwise prohibited by this Indenture.
If the aggregate principal amount of Notes and such other PARI PASSU
Indebtedness tendered into such Asset Sale Offer exceeds the amount of Excess
Proceeds, the Trustee will select the Notes and such other PARI PASSU
Indebtedness to be purchased on a PRO RATA basis. Upon completion of each Asset
Sale Offer, the amount of Excess Proceeds shall be reset at zero.

     The Company will 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 each
repurchase of Notes pursuant to an Asset Sale Offer. To the extent that the
provisions of any securities laws or regulations conflict with the provisions of
Sections 3.09 or 4.10 of this Indenture, the Company will comply with the
applicable securities laws and regulations and will not be deemed to have
breached its obligations under Section 3.09 or this Section 4.10 by virtue of
such compliance.

Section 4.11  TRANSACTIONS WITH AFFILIATES.

     (a) The Company will not, and will 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 of the Company (each an "AFFILIATE TRANSACTION"), unless:

              (1) such Affiliate Transaction is on terms that are no less
     favorable to the Company or the relevant Restricted Subsidiary, taken as a
     whole, than those that would have been obtained in a comparable transaction
     by the Company or such Restricted Subsidiary with an unrelated Person; and

              (2) 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 $7.5 million, a resolution of the Board of Directors
              set forth in an Officers' Certificate certifying that such
              Affiliate Transaction complies with clause (1) of this Section
              4.11(a) and that such Affiliate Transaction has been approved by a
              majority of the disinterested members of the Board of Directors;
              and

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                      (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
              Company or such Subsidiary of such Affiliate Transaction from a
              financial point of view issued by an accounting, appraisal or
              investment banking firm of national standing.

     (b) The following items will not be deemed to be Affiliate Transactions
and, therefore, will not be subject to the provisions of Section 4.11(a):

              (1) any employment agreement, employee benefit plan, officer and
     director indemnification agreement, consulting agreement or any similar
     arrangement entered into by the Company or any of its Restricted
     Subsidiaries in the ordinary course of business;

              (2) transactions (including a merger) between or among the Company
     and/or its Restricted Subsidiaries;

              (3) transactions with a Person (other than an Unrestricted
     Subsidiary of the Company) that is an Affiliate of the Company solely
     because the Company owns, directly or through a Restricted Subsidiary, an
     Equity Interest in such Person;

              (4) payment of reasonable directors' fees;

              (5) any issuance of Equity Interests (other than Disqualified
     Stock) of the Company to Affiliates of the Company and the granting or
     performance of registration rights;

              (6) Restricted Payments that do not violate the provisions of
     Section 4.07 hereof;

              (7) if such Affiliate Transaction is with any Person solely in its
     capacity as a holder of debt or capital stock of the Company or any of the
     Company's Restricted Subsidiaries where such Person is treated no more
     favorably than any other holder of debt or capital stock of the Company or
     any of the Company's Restricted Subsidiaries;

              (8) the existence of or the performance by the Company or any of
     the Company's Restricted Subsidiaries with any of its obligations under the
     terms of any stockholders or similar agreement entered into in connection
     with the IDT Merger;

              (9) transactions effected pursuant to agreements in effect on the
     date of this Indenture and any amendment, modification, or replacement to
     such agreement (so long as the amendment, modification or replacement is
     not disadvantageous to the Holders of the Notes in any respect); and

              (10) loans or advances to employees in the ordinary course of
     business not to exceed $2.0 million in the aggregate at any one time
     outstanding.

Section 4.12  LIENS.

     The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, create, incur, assume or suffer to
exist any Lien of any kind on any asset now owned or hereafter acquired, except
Permitted Liens.

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Section 4.13  BUSINESS ACTIVITIES.

     The Company will not, and will not permit any of its Restricted
Subsidiaries to, engage in any business other than Permitted Businesses, except
to such extent as would not be material to the Company and its Restricted
Subsidiaries taken as a whole.

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:

              (1) its corporate existence, and the corporate, partnership or
     other existence of each of its Subsidiaries, in accordance with the
     respective organizational documents (as the same may be amended from time
     to time) of the Company or any such Subsidiary; and

              (2) the rights (charter and statutory), licenses and franchises of
     the Company and its 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 Subsidiaries, if at
     least two Officers of the Company, one of which is the Chief Executive
     Officer or the Chief Financial Officer of the Company, shall determine that
     the preservation thereof is no longer desirable in the conduct of the
     business of the Company and its 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) If a Change of Control occurs, the Company will make an offer (a
"CHANGE OF CONTROL OFFER") to each Holder to repurchase all or any part (equal
to $1,000 or an integral multiple of $1,000) of each Holder's Notes at a
purchase price equal to 101% of the aggregate principal amount thereof plus
accrued and unpaid interest and Liquidated Damages, if any, on the Notes
repurchased, if any, to, but excluding, the date of purchase, subject to the
rights of Noteholders on the relevant record date to receive interest due on the
relevant interest payment date (the "CHANGE OF CONTROL PAYMENT"). Within 30 days
following any Change of Control, the Company will mail a notice to each Holder
describing the transaction or transactions that constitute the Change of Control
and stating:

              (1) 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;

              (2) the purchase price and the purchase date, which 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");

              (3) that any Note not tendered will continue to accrue interest;

              (4) 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 will cease to accrue interest after the Change of Control
     Payment Date;

              (5) 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" attached to the Notes
     completed, or transfer by book-entry transfer, to the Paying

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     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;

              (6) 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

              (7) 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 will comply with the requirements of Rule 14e-1 under the
Exchange Act and any other securities laws and regulations thereunder to the
extent those laws and regulations are applicable in connection with the
repurchase of the Notes as a result of a Change in Control. To the extent that
the provisions of any securities laws or regulations conflict with the
provisions of Sections 3.09 or 4.15 of this Indenture, the Company will comply
with the applicable securities laws and regulations and will not be deemed to
have breached its obligations under Section 3.09 or this Section 4.15 by virtue
of such compliance.

     (b) On the Change of Control Payment Date, the Company will, to the extent
lawful:

              (1) accept for payment all Notes or portions of Notes properly
     tendered pursuant to the Change of Control Offer;

              (2) deposit with the Paying Agent an amount equal to the Change of
     Control Payment in respect of all Notes or portions of Notes properly
     tendered; and

              (3) 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 of Notes being purchased by the
     Company.

     The Paying Agent will promptly mail to each Holder of Notes properly
tendered the Change of Control Payment for such Notes, and the Trustee will
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 new note will be in a
principal amount of $1,000 or an integral multiple of $1,000.

Prior to complying with any of the provisions of this Section 4.15, but in any
event within 90 days following a Change of Control, the Company will either
repay all outstanding Senior Debt 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 will publicly announce the
results of the Change of Control Offer on or as soon as practicable after the
Change of Control Payment Date.

     (c) Notwithstanding anything to the contrary in this Section 4.15, the
Company will not be required to make a Change of Control Offer upon a Change of
Control if (1) a third party makes the Change of Control Offer in the manner, at
the times and otherwise in compliance with the requirements set forth in this
Section 4.15 hereof and purchases all Notes properly tendered and not withdrawn
under the Change of Control Offer or (2) notice of redemption has been given
pursuant to Section 3.07 hereof, unless and until there is a default in payment
of the applicable redemption price.

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Section 4.16  NO LAYERING OF DEBT.

     The Company will not incur, create, issue, assume, guarantee or otherwise
become liable for any Indebtedness that is contractually subordinate or junior
in right of payment to any Senior Debt of the Company and senior in right of
payment to the Notes. No Guarantor will incur, create, issue, assume, guarantee
or otherwise become liable for any Indebtedness that is contractually
subordinate or junior in right of payment to the Senior Debt of such Guarantor
and senior in right of payment to such Guarantor's Subsidiary Guarantee. No such
Indebtedness will be considered to be senior by virtue of being secured on a
first or junior priority basis.

Section 4.17  LIMITATION ON SALE AND LEASEBACK TRANSACTIONS.

     The Company will not, and will not permit any of its Restricted
Subsidiaries to, enter into any sale and leaseback transaction; PROVIDED that
the Company or any Restricted Subsidiary may enter into a sale and leaseback
transaction if:

              (1) the Company or that Restricted Subsidiary, as applicable,
     could have (a) incurred Indebtedness in an amount equal to the Attributable
     Debt relating to such sale and leaseback transaction under the Fixed Charge
     Coverage Ratio test in Section 4.09(a) hereof and (b) incurred a Lien to
     secure such Indebtedness pursuant to the provisions of Section 4.12 hereof;
     and

              (2) the sale and leaseback transaction is made in compliance with,
     Section 4.10 hereof.

Section 4.18  PAYMENTS FOR CONSENT.

     The Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly, pay or cause to be paid any
consideration to or for the benefit of any Holder of 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
and 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 4.19  ADDITIONAL SUBSIDIARY GUARANTEES.

     If the Company or any of its Restricted Subsidiaries acquires or creates
another Domestic Subsidiary after the date of this Indenture, then that newly
acquired or created Domestic Subsidiary will become a Guarantor and execute a
supplemental indenture and deliver an Opinion of Counsel satisfactory to the
Trustee within 30 Business Days of the date on which it was acquired or created,
provided that any Domestic Subsidiary that constitutes an Immaterial Subsidiary
need not become a Guarantor until such time as it ceases to be an Immaterial
Subsidiary. The form of such Subsidiary Guarantee is attached as Exhibit E
hereto.

Section 4.20  DESIGNATION OF RESTRICTED AND UNRESTRICTED SUBSIDIARIES.

     The Board of Directors may designate any Restricted Subsidiary to be an
Unrestricted Subsidiary if that designation would not cause a Default. If a
Restricted Subsidiary is designated as an Unrestricted Subsidiary, the aggregate
Fair Market Value of all outstanding Investments owned by the Company and its
Restricted Subsidiaries in the Subsidiary designated as Unrestricted will be
deemed to be an Investment made as of the time of the designation and will
reduce the amount available for Restricted Payments under Section 4.07 hereof or
under one or more clauses of the definition of Permitted Investments, as
determined by the Company. That designation will only be permitted if the
Investment

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would be permitted at that time and if the Restricted Subsidiary otherwise meets
the definition of an Unrestricted Subsidiary. The Board of Directors may
redesignate any Unrestricted Subsidiary to be a Restricted Subsidiary if that
redesignation would not cause a Default.

                                   ARTICLE 5.
                                   SUCCESSORS

Section 5.01  MERGER, CONSOLIDATION, OR SALE OF ASSETS.

     The Company may not, directly or indirectly: (1) consolidate or merge with
or into another Person (whether or not the Company is the surviving
corporation); or (2) sell, assign, transfer, convey or otherwise dispose of all
or substantially all of the properties or assets of the Company and its
Restricted Subsidiaries taken as a whole, in one or more related transactions,
to another Person; unless:

              (1) either:

                      (A) the Company is the surviving corporation; or

                      (B) the Person formed by or surviving any such
              consolidation or merger (if other than the Company) or to which
              such sale, assignment, transfer, conveyance or other disposition
              has been made is a corporation organized or existing under the
              laws of the United States, any state of the United States or the
              District of Columbia;

              (2) 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, conveyance or other disposition has been made assumes
     all the obligations of the Company under the Notes, this Indenture and the
     Registration Rights Agreement pursuant to agreements reasonably
     satisfactory to the Trustee;

              (3) immediately after such transaction, no Default or Event of
     Default exists; and

              (4) 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, conveyance or other disposition has been made will,
     on the date of such transaction after giving pro forma effect thereto and
     any related financing transactions as if the same had occurred at the
     beginning of the applicable four-quarter period, be permitted to incur at
     least $1.00 of additional Indebtedness pursuant to the Fixed Charge
     Coverage Ratio test set forth in Section 4.09(a) hereof.

     In addition, the Company will not, directly or indirectly, lease all or
substantially all of its properties or assets, in one or more related
transactions, to any other Person. This Section 5.01 will not apply to:

              (1) a merger of the Company with an Affiliate solely for the
     purpose of reincorporating the Company in another jurisdiction;

              (2) any merger or consolidation, or any sale, transfer,
     assignment, conveyance, lease or other disposition of assets between or
     among the Company and its Restricted Subsidiaries that are Guarantors; or

              (3) the IDT Merger.

Section 5.02  SUCCESSOR CORPORATION SUBSTITUTED.

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     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 a transaction that is subject to, and that complies with the
provisions of, 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, and 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 in a transaction that is subject to, and that complies with
the provisions of, Section 5.01 hereof.

                                   ARTICLE 6.
                              DEFAULTS AND REMEDIES

Section 6.01  EVENTS OF DEFAULT.

     Each of the following is an "EVENT OF DEFAULT":

              (1) default for 30 days in the payment when due of interest on, or
     Liquidated Damages with respect to, the Notes whether or not prohibited by
     the subordination provisions of this Indenture

              (2) 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 this Indenture;

              (3) failure by the Company or any of its Restricted Subsidiaries
     to comply with the provisions Sections 4.15 or 5.01 hereof;

              (4) failure by the Company or any of its Restricted Subsidiaries
     to comply with Sections 4.07 or 4.09 hereof for 30 days after notice to
     comply with such provisions;

              (5) failure by the Company or any of its Restricted Subsidiaries
     for 60 days after notice to comply with any of the other agreements in this
     Indenture;

              (6) 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 this Indenture, if that default:

                      (A) is caused by a failure to pay principal of, or
              interest or premium, if any, on such Indebtedness prior to the
              expiration of the grace period provided in such Indebtedness on
              the date of such default (a "PAYMENT DEFAULT"); or

                      (B) 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
              under which there has been a Payment

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              Default or the maturity of which has been so accelerated,
              aggregates $15.0 million or more;

              (7) failure by the Company or any of its Restricted Subsidiaries
     to pay final judgments aggregating in excess of $15.0 million, which
     judgments are not paid, waived, satisfied, discharged or stayed for a
     period of 60 days;

              (8) except as permitted by this Indenture, any Subsidiary
     Guarantee of a Guarantor that is a Significant Subsidiary or a group of
     Guarantors that, taken as a whole, would constitute a Significant
     Subsidiary, shall be held in any judicial proceeding to be unenforceable or
     invalid or shall cease for any reason to be in full force and effect or any
     Guarantor that is a Significant Subsidiary, or any Person acting on behalf
     of any Guarantor that is a Significant Subsidiary, shall deny or disaffirm
     its obligations under its Subsidiary Guarantee;

              (9) the Company or any of its Restricted Subsidiaries that is a
     Significant Subsidiary or any of its Restricted Subsidiaries that is a
     Significant Subsidiary or any group of Restricted Subsidiaries that, taken
     together, would constitute a Significant Subsidiary pursuant to or within
     the meaning of Bankruptcy Law:

                      (A) commences a voluntary case,

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

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

                      (D) makes a general assignment for the benefit of its
              creditors.

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

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

                      (B) appoints a custodian of the Company or any of its
              Restricted Subsidiaries that is a Significant Subsidiary or any
              group of Restricted Subsidiaries of the Company that, taken
              together, would constitute a Significant Subsidiary or for all or
              substantially all of the property of the Company or any of its
              Restricted Subsidiaries that is a Significant Subsidiary or any
              group of Restricted Subsidiaries of the Company that, taken
              together, would constitute a Significant Subsidiary; or

                      (C) orders the liquidation of the Company or any of its
              Restricted Subsidiaries that is a Significant Subsidiary or any
              group of Restricted Subsidiaries of the Company that, taken
              together, would constitute a Significant Subsidiary;

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

              (11) failure by the Company or any of its Subsidiaries to comply
     with any of the terms of the Escrow Agreement that are not cured within
     applicable grace periods; and

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              (12) the Escrow Agreement or any other security document or any
     Lien purported to be granted thereby on the Escrow Account or the cash or
     Government Securities therein is held in any judicial proceeding to be
     unenforceable or invalid, in whole or in part, or ceases for any reason
     (other than pursuant to a release that is delivered or becomes effective as
     set forth in this Indenture) to be fully enforceable and perfected.

Section 6.02  ACCELERATION.

     In the case of an Event of Default specified in clause (9) or (10) of
Section 6.01 hereof, with respect to the Company any Restricted Subsidiary that
is a Significant Subsidiary or any group of Restricted Subsidiaries that, taken
together, would constitute a Significant Subsidiary, all outstanding Notes will
become due and payable immediately without further action or notice. If any
other 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. Upon any such declaration, the
Notes shall become due and payable immediately.

     Subject to certain limitations, the 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 if it determines that withholding
Notes is in their interest, except a Default or Event of Default relating to the
payment of principal or interest or Liquidated Damages.

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 and Liquidated
Damages, 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 and Liquidated Damages, 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 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.

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     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 that the Trustee determines may be 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 may pursue a remedy with respect to this Indenture or the Notes
only if:

              (1) such Holder has previously given the Trustee notice that an
     Event of Default is continuing;

              (2) Holders of at least 25% in aggregate principal amount of the
     outstanding Notes have requested the Trustee to pursue the remedy;

              (3) such Holders have offered the Trustee reasonable security or
     indemnity satisfactory to it against any loss, liability or expense;

              (4) the Trustee has not complied with such request within 60 days
     after the receipt thereof and the offer of security or indemnity; and

              (5) Holders of a majority in aggregate principal amount of the
     outstanding Notes have not given the Trustee a direction inconsistent with
     such request within such 60-day period.

     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 Liquidated
Damages, 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(1) or (2) 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 Liquidated Damages, 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

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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 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 6, 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,
     reasonable expenses 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 Liquidated Damages, 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 Liquidated
     Damages, 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 and
expenses, 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 6.11 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.

                                   ARTICLE 7.
                                     TRUSTEE

Section 7.01  DUTIES OF TRUSTEE.

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     (a) If an Event of Default has occurred and is continuing, the Trustee will
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 own
affairs.

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

              (1) the duties of the Trustee will 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

              (2) in the absence of bad faith 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,
     in the case of certificates specifically required by any provision herein
     to be furnished to it, the Trustee will examine the certificates and
     opinions to determine whether or not they conform to the requirements of
     this Indenture.

     (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:

              (1) this paragraph does not limit the effect of paragraph (b) of
     this Section 7.01;

              (2) the Trustee will 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

              (3) the Trustee will 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 7.01.

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

     (f) The Trustee will 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 (whether in
original or facsimile form) 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 the 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 will not be
liable for any action it takes or omits to take in good

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faith in reliance on such Officers' Certificate or Opinion of Counsel. The
Trustee may consult with counsel and the written advice of such counsel or any
Opinion of Counsel will 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 will not be
responsible for the misconduct or negligence of any agent appointed with due
care.

     (d) The Trustee will 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 will be sufficient if signed by an
Officer of the Company.

     (f) The Trustee will 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 have offered to the Trustee reasonable security
or indemnity satisfactory to it against the costs, expenses and liabilities that
might be incurred by it in compliance with such request or direction.

     (g) In no event shall the Trustee be responsible or liable for special,
indirect, or consequential loss or damage of any kind whatsoever (including, but
not limited to, loss of profit) irrespective of whether the Trustee has been
advised of the likelihood of such loss or damage and regardless of the form of
action.

     (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 Trustee Office of the Trustee, and such
notice references the Securities and this Indenture.

     (i) 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 each agent, custodian and other Person employed to act hereunder.

     (j) 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 and 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 (if this Indenture has been qualified under the TIA) 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 DISCLAIMER.

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     The Trustee will 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 will not be responsible for the use or application of any money
received by any Paying Agent other than the Trustee, and it will 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 will 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 or
Liquidated Damages, 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.

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

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

Section 7.07  COMPENSATION AND INDEMNITY.

     (a) The Company will pay to the Trustee from time to time reasonable
compensation for its acceptance of this Indenture and services hereunder. The
Trustee's compensation will not be limited by any law on compensation of a
trustee of an express trust. The Company will 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 will
include the reasonable compensation, disbursements and expenses of the Trustee's
agents and counsel.

     (b) The Company and the Guarantors, jointly and severally, will indemnify
the Trustee against any and all losses, liabilities or expenses 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 and the Guarantors (including this Section 7.07)
and defending itself against any claim (whether asserted by the Company, the
Guarantors, 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, claim, damage or expense as shall be determined
to have been caused by its negligence or bad faith. The Trustee will notify the
Company promptly of any claim for which it may seek indemnity. Failure by the
Trustee to so notify the Company will not relieve the Company or any of the
Guarantors of their obligations hereunder. The Company or such Guarantor will
defend the claim and the Trustee will cooperate in the defense. The Trustee may
have separate counsel and the

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Company will pay the reasonable fees and expenses of such counsel. Neither the
Company nor any Guarantor need pay for any settlement made without its consent,
which consent will not be unreasonably withheld.

     (c) The obligations of the Company and the Guarantors under this Section
7.07 will survive the satisfaction and discharge of this Indenture.

     (d) To secure the Company's and the Guarantors' payment obligations in this
Section 7.07, the Trustee will have a Lien prior to the Notes on all money or
property held or collected by the Trustee, except that held in trust to pay
principal and interest on particular Notes. Such Lien will survive the
satisfaction and discharge of this Indenture.

     (e) When the Trustee incurs expenses or renders services after an Event of
Default specified in Section 6.01(7) or (8) 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.

     (f) The Trustee will comply with the provisions of TIA Section 313(b)(2) to
the extent applicable.

Section 7.08  REPLACEMENT OF TRUSTEE.

     (a) A resignation or removal of the Trustee and appointment of a successor
Trustee will become effective only upon the successor Trustee's acceptance of
appointment as provided in this Section 7.08.

     (b) 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 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:

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

              (2) 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;

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

              (4) the Trustee becomes incapable of acting.

     (c) If the Trustee resigns or is removed or if a vacancy exists in the
office of Trustee for any reason, the Company will 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.

     (d) If a successor Trustee does not take office within 60 days after the
retiring Trustee resigns or is removed, the retiring Trustee, the Company, or
the Holders 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.

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

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     (f) A successor Trustee will deliver a written acceptance of its
appointment to the retiring Trustee and to the Company. Thereupon, the
resignation or removal of the retiring Trustee will become effective, and the
successor Trustee will have all the rights, powers and duties of the Trustee
under this Indenture. The successor Trustee will mail a notice of its succession
to Holders. The retiring Trustee will 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 will 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 will be the successor Trustee.

Section 7.10  ELIGIBILITY; DISQUALIFICATION.

     There will 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 $100.0
million as set forth in its most recent published annual report of condition.

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

Section 7.11  PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY.

     The Trustee is subject to TIA Section 311(a), excluding any creditor
relationship listed in TIA Section 311(b). A Trustee who has resigned or been
removed shall be subject to TIA Section 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 its option and at any time, elect to have either
Section 8.02 or 8.03 hereof be applied to all outstanding Notes and the
Subsidiary Guarantees 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 and each of the Guarantors will,
subject to the satisfaction of the conditions set forth in Section 8.04 hereof,
be deemed to have been discharged from their obligations with respect to all
outstanding Notes (including the Subsidiary Guarantees) on the date the
conditions set forth below are satisfied (hereinafter, "LEGAL DEFEASANCE"). For
this purpose, Legal Defeasance means that the Company and the Guarantors will be
deemed to have paid and discharged the entire Indebtedness represented by the
outstanding Notes (including the Subsidiary Guarantees), which will thereafter
be deemed to be "outstanding" only for the purposes of Section 8.05 hereof and
the other Sections of this Indenture

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referred to in clauses (1) and (2) below, and to have satisfied all their other
obligations under such Notes, the Subsidiary Guarantees 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 will survive until otherwise terminated or discharged hereunder:

              (1) the rights of Holders of outstanding Notes to receive payments
     in respect of the principal of, or interest or premium and Liquidated
     Damages, if any, on such Notes when such payments are due from the trust
     referred to in Section 8.04 hereof;

              (2) the Company's obligations with respect to such Notes under
     Article 2 and Section 4.02 hereof;

              (3) the rights, powers, trusts, duties and immunities of the
     Trustee hereunder and the Company's and the Guarantors' obligations in
     connection therewith; and

              (4) 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.

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 and each of the Guarantors will,
subject to the satisfaction of the conditions set forth in Section 8.04 hereof,
be released from each of their obligations under the covenants contained in
Sections 4.04, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.15, 4.16, 4.17, 4.18,
4.19 and 4.20 hereof and clause (4) of Section 5.01 hereof with respect to the
outstanding Notes on and after the date the conditions set forth in Section 8.04
hereof are satisfied (hereinafter, "COVENANT DEFEASANCE"), and the Notes will
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 will continue to be deemed
"outstanding" for all other purposes hereunder (it being understood that such
Notes will not be deemed outstanding for accounting purposes). For this purpose,
Covenant Defeasance means that, with respect to the outstanding Notes and
Subsidiary Guarantees, the Company and the Guarantors may omit to comply with
and will 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 will 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 and Subsidiary Guarantees will 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(3) through 6.01(5)
hereof will not constitute Events of Default.

Section 8.04  CONDITIONS TO LEGAL OR COVENANT DEFEASANCE.

     In order to exercise either Legal Defeasance or Covenant Defeasance under
either Section 8.02 or 8.03 hereof:

              (1) the Company must irrevocably deposit with the Trustee, in
     trust, for the benefit of the Holders of the Notes, cash in U.S. dollars,
     non-callable Government Securities, or a combination of cash in U.S.
     dollars and non-callable Government Securities, in amounts as will be
     sufficient,

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     in the opinion of a nationally recognized investment bank, appraisal firm
     or firm of independent public accountants to pay the principal of, or
     interest and premium and Liquidated Damages, if any, 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 such stated date for payment or to a
     particular redemption date;

              (2) in the case of an election under Section 8.02 hereof, the
     Company has delivered to the Trustee an Opinion of Counsel 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 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;

              (3) in the case of an election under Section 8.03 hereof, the
     Company has delivered to the Trustee an Opinion of Counsel 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;

              (4) no Default or Event of Default has occurred and is continuing
     on the date of such deposit (other than a Default or Event of Default
     resulting from the borrowing of funds to be applied to such deposit) and
     the deposit will not result in a breach or violation of, or constitute a
     default under, any other instrument to which the Company or any Guarantor
     is a party or by which the Company or any Guarantor is bound;

              (5) such Legal Defeasance or Covenant Defeasance will 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 Subsidiaries is a party or by which the Company or any of its
     Subsidiaries is bound;

              (6) the Company must deliver to the Trustee an Officers'
     Certificate stating that the deposit was not made by the Company with the
     intent of preferring the Holders of Notes over the other creditors of the
     Company with the intent of defeating, hindering, delaying or defrauding
     creditors of the Company or others; and

              (7) the Company must deliver 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.

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

     The Company will 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.

     Notwithstanding anything in this Article 8 to the contrary, the Trustee
will 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(1) 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 or Liquidated
Damages, if any, or interest on any Note and remaining unclaimed for two years
after such principal, premium or Liquidated Damages, 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) will be discharged from such trust; and the Holder of such
Note will thereafter be permitted to 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, will
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 will 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 and the Guarantors' obligations under this
Indenture and the Notes and the Subsidiary Guarantees will 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 or Liquidated Damages, if any, or interest on any Note following the
reinstatement of its obligations, the Company will 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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                                   ARTICLE 9.
                        AMENDMENT, SUPPLEMENT AND WAIVER

Section 9.01  WITHOUT CONSENT OF HOLDERS OF NOTES.

     Notwithstanding Section 9.02 of this Indenture (but subject in any event to
Section 10.13), without the consent of any Holder of Notes, the Company, the
Guarantors and the Trustee may amend or supplement this Indenture, the Notes or
the Subsidiary Guarantees:

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

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

              (3) to provide for the assumption of the Company's or a
     Guarantor's obligations to the Holders of Notes and Subsidiary Guarantees
     in the case of a merger or consolidation or sale of all or substantially
     all of the Company's or such Guarantor's assets, as applicable;

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

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

              (6) to add additional Guarantees with respect to the Notes or
     release Guarantors from Subsidiary Guarantees as provided or permitted by
     the terms of this Indenture; or

              (7) to conform the text of this Indenture or the Notes to any
     provision of the "Description of Notes" section of the Company's Offering
     Memorandum dated October 16, 2003, relating to the initial offering of the
     Notes, to the extent that such provision in that "Description of Notes" was
     intended to be a verbatim recitation of a provision of this Indenture, the
     Subsidiary Guarantees or the Notes.

     The consent of the Holders of the Notes is not necessary to approve the
particular form of any proposed amendment. It is sufficient if such consent
approves the substance of such proposed amendment. After an amendment becomes
effective, the Company is required to mail to each registered Holder of the
Notes a notice briefly describing such amendment. However, the failure to give
such notice to all Holders of the Notes, or any defect therein, will not impair
or affect the validity of the amendment.

     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 will join with the Company and the Guarantors 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 will 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 and Section 10.13, the
Company and the Trustee may amend or supplement this Indenture (including,
without limitation, Section 3.09, 4.10 and 4.15 hereof), the Subsidiary
Guarantees and the Notes with the consent of the Holders of at least a majority
in

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principal amount of the Notes (including, without limitation, Additional Notes,
if any) then outstanding voting as a single class (including, without
limitation, consents obtained in connection with a tender offer or exchange
offer for, or purchase of, 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 or Liquidated Damages, 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, the Subsidiary Guarantees or the Notes may be waived with the consent
of the Holders of a majority in principal amount of the then outstanding Notes
voting as a single class (including consents obtained in connection with a
tender offer or exchange offer for, or purchase of, the Notes). Section 2.08
hereof shall determine which Notes are considered to be "outstanding" for
purposes of this Section 9.02.

     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 will
join with the Company and the Guarantors in the execution of such amended or
supplemental indenture unless such amended or supplemental indenture directly
affects the Trustee's own rights, duties or immunities under this Indenture or
otherwise, in which case the Trustee may in its discretion, but will not be
obligated to, enter into such amended or supplemental Indenture.

     It is 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 is sufficient if such consent approves the substance thereof.

     After an amendment, supplement or waiver under this Section 9.02 becomes
effective, the Company will 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, will 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 voting as a
single class may waive compliance in a particular instance by the Company with
any provision of this Indenture, the Notes, or the Subsidiary Guarantees.
However, without the consent of each Holder affected, an amendment, supplement
or waiver under this Section 9.02 may not (with respect to any Notes held by a
non-consenting Holder):

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

              (2) reduce the principal of or change the fixed maturity of any
     Note or alter the provisions with respect to the redemption of the Notes
     (other than as provided with respect to Sections 3.09, 4.10 or 4.15
     hereof);

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

              (4) waive a Default or Event of Default in the payment of
     principal of, or interest or premium, or Liquidated Damages, if any, on the
     Notes (except a rescission of acceleration of the Notes by the Holders of
     at least a majority in aggregate principal amount of the then outstanding
     Notes and a waiver of the payment default that resulted from such
     acceleration);

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

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              (6) 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 interest or premium or Liquidated Damages, if
     any, on the Notes;

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

              (8) release any Guarantor from any of its obligations under its
     Subsidiary Guarantee or this Indenture, except in accordance with the terms
     of this Indenture; or

              (9) make any change covered by (6) in the foregoing amendment and
     waiver provisions.

     In addition, any amendment to, or waiver of, the provisions of this
Indenture relating to subordination that adversely affects the rights of the
Holders of the Notes will require the consent of the Holders of at least 75% in
aggregate principal amount of Notes then outstanding.

Section 9.03  COMPLIANCE WITH TRUST INDENTURE ACT.

     Every amendment or supplement to this Indenture or the Notes will 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, upon receipt of an
Authentication Order, authenticate new Notes that reflect the amendment,
supplement or waiver.

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

Section 9.06  TRUSTEE TO SIGN AMENDMENTS, ETC.

     The Trustee will 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 amended or supplemental indenture until the Board of Directors
approves it. In executing any amended or supplemental indenture, the Trustee
will be provided with and (subject to Section 7.01 hereof) will be fully
protected in relying upon, in addition to the documents required by Section
13.04 hereof, 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.

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                                   ARTICLE 10.
                                  SUBORDINATION

Section 10.01 AGREEMENT TO SUBORDINATE.

     The Company agrees, and each Holder by accepting a Note agrees, that the
payment of principal, interest and Liquidated Damages, if any, on the Notes is
subordinated in right of payment, to the extent and in the manner provided in
this Article 10, to the prior payment in full 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 10.02 LIQUIDATION; DISSOLUTION; BANKRUPTCY.

          (1) Upon any distribution to creditors of the Company in a liquidation
     or dissolution of the Company or 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 any
     marshaling of the Company's assets and liabilities, the holders of Senior
     Debt will be entitled to receive payment in full in cash of all Obligations
     due in respect of Senior Debt (including interest after the commencement of
     any bankruptcy proceeding at the rate specified in the applicable Senior
     Debt, whether or not such interest is an allowable claim) before the
     Holders of Notes will be entitled to receive any payment with respect to
     the Notes (except that Holders of Notes may receive and retain Permitted
     Junior Securities and payments made from either of the trusts created
     pursuant to Sections 8.01 or 11.01 hereof so long as the trust was created
     in accordance with all relevant conditions specified in this Indenture at
     the time it was created.)

Section 10.03 DEFAULT ON DESIGNATED SENIOR DEBT.

     (a) The Company may not make any payment in respect to the Notes (except in
Permitted Junior Securities or from the trusts created pursuant to Section 8.01
hereof so long as the trust was created in accordance with all relevant
conditions specified in this Indenture at the time it was created) if:

              (1) a payment default on Designated Senior Debt occurs (whether at
     maturity, due to acceleration, or otherwise) and is continuing; or

              (2) any other default occurs and is continuing on any series of
     Designated Senior Debt that permits holders of that series of Designated
     Senior Debt to accelerate its maturity and the Trustee receives a notice of
     such default (a "PAYMENT BLOCKAGE NOTICE") from the Company, a
     representative of the holders of any Designated Senior Debt or the
     administrative agent under the Credit Agreement. If the Trustee receives
     any such Payment Blockage Notice, no subsequent Payment Blockage Notice
     will be effective for purposes of this Section unless and until at least
     360 days have elapsed since the delivery of the immediately prior Payment
     Blockage Notice.

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

     (b) Payments on the Notes may and will be resumed:

              (1) in the case of a payment default, upon the date upon which
     such default is cured or waived; and

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              (2) in the case of a nonpayment default, upon the earlier of the
     date on which such nonpayment default is cured or waived or 179 days after
     the date on which the applicable Payment Blockage Notice is received or the
     date on which the Trustee receives notice from all representatives of all
     applicable Designated Senior Debt rescinding the Payment Blockage Notice
     unless the maturity of any Designated Senior Debt has been accelerated.

     unless this Article 10 otherwise prohibits the payment, distribution or
acquisition at the time of such payment or acquisition.

Section 10.04  ACCELERATION OF NOTES.

     The Company must promptly notify holders of Senior Debt if payment of the
Notes is accelerated because of an Event of Default (which notice must be
provided at least five business days prior to the payment of the Notes.)

Section 10.05 WHEN DISTRIBUTION MUST BE PAID OVER.

If the Trustee or any Holder of the Notes receives a payment in respect of the
Notes (except in Permitted Junior Securities or from the trusts created pursuant
to Section 8.01 hereof) in contravention of these subordination provisions set
forth herein prior to payment in full of all Obligations due in respect of
Senior Debt (including without limitation, interest after the commencement of
any bankruptcy proceedings at the rate specified in the applicable Senior Debt,
whether or not such interest is an allowable claim) the Trustee or the Holder,
as the case may be, will hold the payment in trust for the benefit of the
holders of Senior Debt. Upon the proper written request of the holders of Senior
Debt, the Trustee or the Holder, as the case may be, will deliver the amounts in
trust to the holders of Senior Debt (on a pro rata basis based on the aggregate
amount of the Senior Debt) or their proper representative.

     With respect to the holders of Senior Debt, the Trustee undertakes to
perform only those obligations on the part of the Trustee as are specifically
set forth in this Article 10, and no implied covenants or obligations with
respect to the holders of Senior Debt will be read into this Indenture against
the Trustee. The Trustee will not be deemed to owe any fiduciary duty to the
holders of Senior Debt, and will not be liable to any such holders if the
Trustee pays over or distributes to or on behalf of Holders or the Company or
any other Person money or assets to which any holders of Senior Debt are then
entitled by virtue of this Article 10, except if such payment is made as a
result of the willful misconduct or gross negligence of the Trustee.

Section 10.06 NOTICE BY COMPANY.

     The Company will 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 10, but failure to give such notice
will not affect the subordination of the Notes to the Senior Debt as provided in
this Article 10.

Section 10.07 SUBROGATION.

     After all Senior Debt is paid in full and until the Notes are paid in full,
Holders of Notes will 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 10 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.

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Section 10.08 RELATIVE RIGHTS.

     This Article 10 defines the relative rights of Holders of Notes and holders
of Senior Debt. Nothing in this Indenture will:

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

              (2) 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

              (3) 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 10 to pay principal of,
premium or interest or Liquidated Damages, if any, on a Note on the due date,
the failure is still a Default or Event of Default.

Section 10.09 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 may 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 10.10 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 10, the Trustee and the Holders of Notes will 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 10.

Section 10.11 RIGHTS OF TRUSTEE AND PAYING AGENT.

     Notwithstanding the provisions of this Article 10 or any other provision of
this Indenture, the Trustee will 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 has 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 10. Only the Company or a Representative may give the
notice. Nothing in this Article 10 will 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.

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Section 10.12 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 effectuate the subordination as provided in this
Article 10, 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 Representatives are hereby authorized to file an appropriate
claim for and on behalf of the Holders of the Notes.

Section 10.13 AMENDMENTS.

     The provisions of this Article 10 may not be amended, modified or waived
without the written consent of the holders of all Senior Debt. In addition, any
amendment to, or waiver of, the provisions of this Article 10 that adversely
affects the rights of the Holders of the Notes will require the consent of the
Holders of at least 75% in aggregate principal amount of Notes then outstanding.

Section 10.14 TRUSTEE NOT FIDUCIARY FOR HOLDERS OF SENIOR INDEBTEDNESS.

     The Trustee shall not be deemed to owe any fiduciary duty to the holders of
Senior Indebtedness and shall not be liable to any such holders if the Trustee
shall in good faith mistakenly pay over or distribute to Holders of Securities
or to the Company or to any other person cash, property or securities to which
any holders of Senior Indebtedness shall be entitled by virtue of this Article
or otherwise. With respect to the holders of Senior Indebtedness, the Trustee
undertakes or perform or to observe only such of its covenants or obligations as
are specifically set forth in this Article and no implied covenants or
obligations with respect to holders of Senior Indebtedness shall be read into
this Indenture against the Trustee.

                                   ARTICLE 11.
                              SUBSIDIARY GUARANTEES

Section 11.01 GUARANTEE.

     (a) Subject to this Article 11, each of the Guarantors hereby, jointly and
severally, unconditionally guarantees to each Holder of a Note authenticated and
delivered by the Trustee and to the Trustee and its successors and assigns,
irrespective of the validity and enforceability of this Indenture, the Notes or
the obligations of the Company hereunder or thereunder, that:

              (1) the principal of, premium and Liquidated Damages, if any, and
     interest 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 and interest on the Notes, if any, if lawful, and all
     other obligations of the Company to the Holders or the Trustee hereunder or
     thereunder will be promptly paid in full or performed, all in accordance
     with the terms hereof and thereof; and

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

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     Failing payment when due of any amount so guaranteed or any performance so
guaranteed for whatever reason, the Guarantors will be jointly and severally
obligated to pay the same immediately. Each Guarantor agrees that this is a
guarantee of payment and not a guarantee of collection.

     (b) The Guarantors hereby agree that their obligations hereunder are
unconditional, irrespective 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. 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 covenant that this Subsidiary Guarantee will not be discharged except by
complete performance of the obligations contained in the Notes and this
Indenture.

     (c) If any Holder or the Trustee is required by any court or otherwise to
return to the Company, the Guarantors or any custodian, trustee, liquidator or
other similar official acting in relation to either the Company or the
Guarantors, any amount paid by either to the Trustee or such Holder, this
Subsidiary Guarantee, to the extent theretofore discharged, will be reinstated
in full force and effect.

     (d) Each Guarantor agrees that it will 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 the Guarantors, on the one hand, and
the Holders and the Trustee, on the other hand, (1) the maturity of the
obligations guaranteed hereby may be accelerated as provided in Article 6 hereof
for the purposes of this Subsidiary Guarantee, notwithstanding any stay,
injunction or other prohibition preventing such acceleration in respect of the
obligations guaranteed hereby, and (2) in the event of any declaration of
acceleration of such obligations as provided in Article 6 hereof, such
obligations (whether or not due and payable) will forthwith become due and
payable by the Guarantors for the purpose of this Subsidiary Guarantee. The
Guarantors will have the right to seek contribution from any non-paying
Guarantor so long as the exercise of such right does not impair the rights of
the Holders under the Subsidiary Guarantee.

Section 11.02 SUBORDINATION OF SUBSIDIARY GUARANTEE.

     The Obligations of each Guarantor under its Subsidiary Guarantee pursuant
to this Article 11 will be junior and subordinated to the Senior Debt of such
Guarantor on the same basis as the Notes are junior and subordinated to Senior
Debt of the Company. For the purposes of the foregoing sentence, the Trustee and
the Holders will have the right to receive and/or retain payments by any of the
Guarantors only at such times as they may receive and/or retain payments in
respect of the Notes pursuant to this Indenture, including Article 10 hereof.

Section 11.03 LIMITATION ON GUARANTOR LIABILITY.

     Each Guarantor, and by its acceptance of Notes, each Holder, hereby
confirms that it is the intention of all such parties that the Subsidiary
Guarantee of such Guarantor not constitute a fraudulent transfer or conveyance
for purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the
Uniform Fraudulent Transfer Act or any similar federal or state law to the
extent applicable to any Subsidiary Guarantee. To effectuate the foregoing
intention, the Trustee, the Holders and the Guarantors hereby irrevocably agree
that the obligations of such Guarantor will be limited to the maximum amount
that will, after giving effect to such maximum amount and all other contingent
and fixed liabilities of such Guarantor that are relevant under such laws, and
after giving effect to any collections from, rights to

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receive contribution from or payments made by or on behalf of any other
Guarantor in respect of the obligations of such other Guarantor under this
Article 11, result in the obligations of such Guarantor under its Subsidiary
Guarantee not constituting a fraudulent transfer or conveyance.

Section 11.04 EXECUTION AND DELIVERY OF SUBSIDIARY GUARANTEE.

     To evidence its Subsidiary Guarantee set forth in Section 11.01 hereof,
each Guarantor hereby agrees that a notation of such Subsidiary Guarantee
substantially in the form attached as Exhibit E hereto will be endorsed by an
Officer of such Guarantor on each Note authenticated and delivered by the
Trustee and that this Indenture will be executed on behalf of such Guarantor by
one of its Officers.

     Each Guarantor hereby agrees that its Subsidiary Guarantee set forth in
Section 11.01 hereof will remain in full force and effect notwithstanding any
failure to endorse on each Note a notation of such Subsidiary Guarantee.

     If an Officer whose signature is on this 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 will
be valid nevertheless.

     The delivery of any Note by the Trustee, after the authentication thereof
hereunder, will constitute due delivery of the Subsidiary Guarantee set forth in
this Indenture on behalf of the Guarantors.

     In the event that the Company or any of its Restricted Subsidiaries creates
or acquires any Domestic Subsidiary after the date of this Indenture, if
required by Section 4.20 hereof, the Company will cause such Domestic Subsidiary
to comply with the provisions of Section 4.20 hereof and this Article 11, to the
extent applicable.

Section 11.05 GUARANTORS MAY CONSOLIDATE, ETC., ON CERTAIN TERMS.

     Except as otherwise provided in Section 11.05 hereof, no Guarantor may sell
or otherwise dispose of all or substantially all of its assets to, or
consolidate with or merge with or into (whether or not such Guarantor is the
surviving Person) another Person, other than the Company or another Guarantor,
unless:

              (1) immediately after giving effect to such transaction, no
     Default or Event of Default exists; and

              (2) either:

                      (a) subject to Section 11.05 hereof, the Person acquiring
     the property in any such sale or disposition or the Person formed by or
     surviving any such consolidation or merger unconditionally assumes all the
     obligations of that Guarantor, pursuant to a supplemental indenture in form
     and substance reasonably satisfactory to the Trustee, under this Indenture
     and the Subsidiary Guarantee on the terms set forth herein or therein; and

                      (b) the Net Proceeds of such sale or other disposition are
     applied in accordance with the applicable provisions of this Indenture,
     including without limitation, Section 4.10 hereof.

     In case of any such consolidation, merger, sale or conveyance and upon the
assumption by the successor Person, by supplemental indenture, executed and
delivered to the Trustee and satisfactory in form to the Trustee, of the
Subsidiary Guarantee endorsed upon the Notes and the due and punctual
performance of all of the covenants and conditions of this Indenture to be
performed by the Guarantor,

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such successor Person will succeed to and be substituted for the Guarantor with
the same effect as if it had been named herein as a Guarantor. Such successor
Person thereupon may cause to be signed any or all of the Subsidiary Guarantees
to be endorsed upon all of the Notes issuable hereunder which theretofore shall
not have been signed by the Company and delivered to the Trustee. All the
Subsidiary Guarantees so issued will in all respects have the same legal rank
and benefit under this Indenture as the Subsidiary Guarantees theretofore and
thereafter issued in accordance with the terms of this Indenture as though all
of such Subsidiary Guarantees had been issued at the date of the execution
hereof.

     Except as set forth in Articles 4 and 5 hereof, and notwithstanding clauses
(a) and (b) above, nothing contained in this Indenture or in any of the Notes
will prevent any consolidation or merger of a Guarantor with or into the Company
or another Guarantor, or will prevent any sale or conveyance of the property of
a Guarantor as an entirety or substantially as an entirety to the Company or
another Guarantor.

Section 11.06 RELEASES.

     (a) In the event of any sale or other disposition of all or substantially
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, in each case to a Person that is not (either before or after giving
effect to such transactions) the Company or a Restricted Subsidiary of the
Company, then such Guarantor (in the event of a sale or other disposition, by
way of 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 or substantially 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 this Indenture, including without
limitation Section 4.10 hereof. Upon delivery by the Company to the Trustee of
an Officers' Certificate and an Opinion of Counsel to the effect that such sale
or other disposition was made by the Company in accordance with the provisions
of this Indenture, including without limitation Section 4.10 hereof, the Trustee
will execute any documents reasonably required in order to evidence the release
of any Guarantor from its obligations under its Subsidiary Guarantee.

     (b) Upon designation of any Guarantor as an Unrestricted Subsidiary in
accordance with the terms of this Indenture, such Guarantor will be released and
relieved of any obligations under its Subsidiary Guarantee.

     (c) Upon Legal Defeasance in accordance with Article 8 hereof or
satisfaction and discharge of this Indenture in accordance with Article 11
hereof, each Guarantor will be released and relieved of any obligations under
its Subsidiary Guarantee.

     Any Guarantor not released from its obligations under its Subsidiary
Guarantee as provided in this Section 11.06 will 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 11.

                                   ARTICLE 12.
                           SATISFACTION AND DISCHARGE

Section 12.01 SATISFACTION AND DISCHARGE.

     This Indenture will be discharged and will cease to be of further effect as
to all Notes issued hereunder, when:

              (1) either:

                                       81
<Page>

                      (a) all Notes that have been authenticated, except lost,
     stolen or destroyed Notes that have been replaced or paid and Notes for
     whose payment money has been deposited in trust and thereafter repaid to
     the Company), have been delivered to the Trustee for cancellation; or

                      (b) all Notes that have not been delivered to the Trustee
     for cancellation have become due and payable by reason of the mailing of a
     notice of redemption or otherwise or will become due and payable within one
     year and the Company or any Guarantor has irrevocably deposited or caused
     to be deposited with the Trustee as trust funds in trust solely for the
     benefit of the Holders, cash in U.S. dollars, non-callable Government
     Securities, or a combination of cash in U.S. dollars and non-callable
     Government Securities, in amounts as will be sufficient, without
     consideration of any reinvestment of interest, to pay and discharge the
     entire Indebtedness on the Notes not delivered to the Trustee for
     cancellation for principal, premium and Liquidated Damages, if any, and
     accrued interest to the date of maturity or redemption;

              (2) no Default or Event of Default has occurred and is continuing
     on the date of the deposit (other than a Default or Event of Default
     resulting from the borrowing of funds to be applied to such deposit) and
     the deposit will not result in a breach or violation of, or constitute a
     default under, any other instrument to which the Company or any Guarantor
     is a party or by which the Company or any Guarantor is bound;

              (3) the Company or any Guarantor has paid or caused to be paid all
     sums payable by it under this Indenture; and

              (4) the Company has delivered irrevocable instructions to the
     Trustee under this Indenture to apply the deposited money toward the
     payment of the Notes at maturity or the redemption date, as the case may
     be.

In addition, the Company must deliver an Officers' Certificate and an Opinion of
Counsel to the Trustee stating that all conditions precedent to satisfaction and
discharge have been satisfied.

     Notwithstanding the satisfaction and discharge of this Indenture, if money
has been deposited with the Trustee pursuant to subclause (b) of clause (1) of
this Section, the provisions of Sections 12.02 and 8.06 will survive. In
addition, nothing in this Section 12.01 will be deemed to discharge those
provisions of Section 7.07 hereof, that, by their terms, survive the
satisfaction and discharge of this Indenture.

Section 12.02 APPLICATION OF TRUST MONEY.

     Subject to the provisions of Section 8.06 hereof, all money deposited with
the Trustee pursuant to Section 12.01 hereof shall be held in trust and applied
by it, in accordance with the provisions of the Notes and this Indenture, to the
payment, either directly or through any Paying Agent (including the Company
acting as its own Paying Agent) as the Trustee may determine, to the Persons
entitled thereto, of the principal (and premium, if any) and interest for whose
payment such money has been deposited with the Trustee; but such money need not
be segregated from other funds except to the extent required by law.

     If the Trustee or Paying Agent is unable to apply any money or Government
Securities in accordance with Section 12.01 hereof by reason of any legal
proceeding or by reason of any order or judgment of any court or governmental
authority enjoining, restraining or otherwise prohibiting such application, the
Company's and any Guarantor's obligations under this Indenture and the Notes
shall be revived and reinstated as though no deposit had occurred pursuant to
Section 12.01 hereof; PROVIDED

                                       82
<Page>

that if the Company has made any payment of principal of, premium, if any, or
interest on any Notes because of 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 or Government Securities held by the Trustee
or Paying Agent.

                                   ARTICLE 13.
                                  MISCELLANEOUS

Section 13.01 TRUST INDENTURE ACT CONTROLS.

     If any provision of this Indenture limits, qualifies or conflicts with the
duties imposed by TIA Section318(c), the imposed duties will control.

Section 13.02 NOTICES.

     Any notice or communication by the Company, any Guarantor 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), telex,
telecopier or overnight air courier guaranteeing next day delivery, to the
others' address:

     If to the Company and/or any Guarantor:

     DRS Technologies, Inc.
     5 Sylvan Way
     Parsippany, New Jersey 07054
     Telecopier No.: (973) 898-1500
     Attention: Chief Financial Officer

     With a copy to:
     Skadden, Arps, Slate, Meagher & Flom LLP
     Four Times Square
     New York, New York 10036
     Telecopier No.: (212) 735-2000
     Attention: David J. Goldschmidt, Esq.

     If to the Trustee:
     The Bank of New York
     101 Barclay Street-8 West
     New York, New York 10286
     Telecopier No.: (212) 815-5707
     Attention: Corporate Trust Administration

     The Company, any Guarantor 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) will 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 the next Business Day after timely delivery to the courier,
if sent by overnight air courier guaranteeing next day delivery.

                                       83
<Page>

     Any notice or communication to a Holder will 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 will also be so mailed to any Person
described in TIA Section 313(c), to the extent required by the TIA. Failure to
mail a notice or communication to a Holder or any defect in it will 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 will mail a
copy to the Trustee and each Agent at the same time.

Section 13.03  COMMUNICATION BY HOLDERS OF NOTES WITH OTHER HOLDERS OF NOTES.

     Holders may communicate pursuant to TIA Section 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 Section
312(c).

Section 13.04  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 (except
that the Opinion of Counsel referred to in Section 13.04(2) hereof shall not be
required in connection with the Authentication Order):

              (1) an Officers' Certificate in form and substance reasonably
     satisfactory to the Trustee (which must include the statements set forth in
     Section 13.05 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

              (2) an Opinion of Counsel in form and substance reasonably
     satisfactory to the Trustee (which must include the statements set forth in
     Section 13.05 hereof) stating that, in the opinion of such counsel, all
     such conditions precedent and covenants have been satisfied.

Section 13.05  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 Section 314(a)(4)) must comply with the provisions of TIA
Section 314(e) and must include:

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

              (2) 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;

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

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

                                       84
<Page>

Section 13.06 RULES 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 13.07 NO PERSONAL LIABILITY OF DIRECTORS, OFFICERS, EMPLOYEES AND
STOCKHOLDERS.

     No director, officer, employee, incorporator or stockholder of the Company
or any Subsidiary, as such, will have any liability for any obligations of the
Company or the Guarantors under the Notes, this Indenture, the Subsidiary
Guarantees 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. The waiver may not be effective to
waive liabilities under the federal securities laws.

Section 13.08 GOVERNING LAW.

     THE INTERNAL LAW OF THE STATE OF NEW YORK WILL GOVERN AND BE USED TO
CONSTRUE THIS INDENTURE, THE NOTES AND THE SUBSIDIARY GUARANTEES WITHOUT GIVING
EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE
APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

Section 13.09 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 13.10 SUCCESSORS.

     All agreements of the Company in this Indenture and the Notes will bind its
successors. All agreements of the Trustee in this Indenture will bind its
successors. All agreements of each Guarantor in this Indenture will bind its
successors, except as otherwise provided in Section 11.06.

Section 13.11 SEVERABILITY.

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

Section 13.12 COUNTERPART ORIGINALS.

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

Section 13.13 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 will in no way
modify or restrict any of the terms or provisions hereof.

                         [Signatures on following page]

                                       85
<Page>

                                   SIGNATURES

Dated as of October 30, 2003
                                     DRS TECHNOLOGIES, INC.

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

                                     NAI TECHNOLOGIES, INC.
                                     DRS ELECTRONIC SYSTEMS, INC.
                                     DRS SURVEILLANCE SUPPORT SYSTEMS, INC.
                                     DRS TECHNICAL SERVICES, INC.
                                     DRS POWER & CONTROL TECHNOLOGIES, INC.
                                     DRS ELECTRIC POWER TECHNOLOGIES, INC.
                                     DRS POWER TECHNOLOGY, INC.
                                     PARAVANT INC.
                                     DRS TACTICAL SYSTEMS, INC.
                                     DRS TACTICAL SYSTEMS (WEST), INC.
                                     DRS ENGINEERING DEVELOPMENT LABS, INC.
                                     DRS SIGNAL TECHNOLOGIES, INC.
                                     DRS SIGNAL RECORDING TECHNOLOGIES, INC.
                                     DRS SYSTEMS MANAGEMENT CORPORATION
                                     DRS OPTRONICS, INC.
                                     DRS SENSORS & TARGETING SYSTEMS, INC.
                                     DRS NYTECH IMAGING SYSTEMS, INC.
                                     DRS FPA, INC.
                                     DRS INFRARED TECHNOLOGIES, L.P.
                                     DRS UNMANNED TECHNOLOGIES, INC.
                                     DRS DATA & IMAGING SYSTEMS, INC.
                                     DRS TECHNOLOGIES CANADA, INC.
                                     DRS COMMUNICATIONS COMPANY L.L.C.
                                     DRS SYSTEMS, INC.
                                     DRS NEWCO III, INC.
                                     MMC3 CORPORATION
                                     DRS INTERNATIONAL, INC.

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

<Page>

                                     THE BANK OF NEW YORK

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

<Page>

                                                                       EXHIBIT A

                                 [Face of Note]

                                                         CUSIP/CINS ____________

                     6 7/8% Senior Subordinated Notes due 2013

No. ___                                                            $____________

                             DRS TECHNOLOGIES, INC.

promises to pay to [________] or registered assigns,

the principal sum of _________________________________________________DOLLARS on
_____________, 20___.

Interest Payment Dates:  ____________ and ____________

Record Dates:  ____________ and ____________

Dated:  _______________, 200_

                                     DRS TECHNOLOGIES, INC.

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

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

THE BANK OF NEW YORK,
 as Trustee

By:
    ------------------------------------
            Authorized Signatory

                                       A-1
<Page>

                                  Back of Note
                    6 7/8% Senior Subordinated Notes due 2013

[INSERT THE GLOBAL NOTE LEGEND, IF APPLICABLE PURSUANT TO THE PROVISIONS OF THE
INDENTURE]

[INSERT THE PRIVATE PLACEMENT LEGEND, IF APPLICABLE PURSUANT TO THE PROVISIONS
OF THE INDENTURE]

[INSERT THE UNIT LEGEND, IF APPLICABLE PURSUANT TO THE PROVISIONS OF THE
INDENTURE]

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

          (1) INTEREST. DRS Technologies, Inc., a Delaware corporation (the
     "COMPANY"), promises to pay interest on the principal amount of this Note
     at 6 7/8% per annum from October 30, 2003 until maturity and shall pay the
     Liquidated Damages, if any, payable pursuant to Section 5 of the
     Registration Rights Agreement referred to below. The Company will pay
     interest and Liquidated Damages, if any, semi-annually in arrears on May 1
     and November 1 of each year, or if any such day is not a Business Day, on
     the next succeeding Business Day (each, an "INTEREST PAYMENT DATE").
     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 the date of
     issuance; 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 May 1, 2004.
     The Company will 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 will pay interest (including post-petition
     interest in any proceeding under any Bankruptcy Law) on overdue
     installments of interest and Liquidated Damages, if any, (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 comprised of twelve 30-day months.

          (2) METHOD OF PAYMENT. The Company will pay interest on the Notes
     (except defaulted interest) and Liquidated Damages, if any, to the Persons
     who are registered Holders of Notes at the close of business on the April
     15 or October 15 next 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 Liquidated Damages, if any, and interest at the office or
     agency of the Company maintained for such purpose within or without the
     City and State of New York, or, at the option of the Company, payment of
     interest and Liquidated Damages, if any, 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 Liquidated
     Damages, if any, on, all Global Notes and all other Notes the Holders of
     which will have provided wire transfer instructions to the Company or the
     Paying Agent. Such payment will 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

                                      A1-2
<Page>

     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 October 30, 2003 (the "INDENTURE") among the Company, the Guarantors
     and the Trustee. The terms of the Notes include those stated in the
     Indenture and those made part of the Indenture by reference to the TIA (15
     U.S. Code Sections 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. The Notes are unsecured obligations of the
     Company.

          (5) OPTIONAL REDEMPTION.

     (a) Except as set forth in subparagraph (b) of this Paragraph 5, the
Company will not have the option to redeem the Notes prior to November 1, 2008.
On or after November 1, 2008, the Company may redeem all or part of the Notes
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 Liquidated Damages, if any on the Notes redeemed, to, but
excluding, the applicable redemption date, if redeemed during the twelve-month
period beginning on November 1 of the years indicated below:

<Table>
<Caption>
     Year                                                         Percentage
     ----                                                         ----------
     <S>                                                             <C>
     2008....................................................        103.438%
     2009....................................................        102.292%
     2010....................................................        101.146%
     2011 and thereafter.....................................        100.000%
</Table>

     (b) Notwithstanding the provisions of subparagraph (a) of this Paragraph 5,
at any time prior to November 1, 2006, the Company may on any one or more
occasions redeem up to 35% of the aggregate principal amount of Notes at a
redemption price of 106.875% of principal amount thereof; plus accrued and
unpaid interest and Liquidated Damages, if any, to, but excluding, the
redemption date, with the net cash proceeds of one or more Equity Offerings
PROVIDED that at least 65% of the aggregate principal amount of the Notes
originally issued under the Indenture (excluding Notes held by the Company and
its Subsidiaries) remains outstanding immediately after the occurrence of such
redemption and that such redemption occurs within 120 days of the date of the
closing of such Equity Offering.

     Except pursuant to the preceding paragraph and the Escrow Agreement, the
Notes will not be redeemable at the Company's option prior to November 1, 2008.

     Unless the Company defaults in the payment of the redemption price,
interest will cease to accrue on the Notes or portions thereof called for
redemption on the applicable redemption date.

          (6) MANDATORY REDEMPTION.

     The Company will not be required to make mandatory redemption or sinking
fund payments with respect to the Notes.

          (7) REPURCHASE AT THE OPTION OF HOLDER.

               (a) If there is a Change of Control, the Company will be required
     to make an offer (a "CHANGE OF CONTROL OFFER") to repurchase all or any
     part (equal to $1,000 or an integral

                                      A1-3
<Page>

     multiple thereof) of each Holder's Notes at a purchase price equal to 101%
     of the aggregate principal amount thereof plus accrued and unpaid interest
     and Liquidated Damages thereon, if any, to, but excluding, the date of
     purchase subject to the rights of Noteholders on the relevant record date
     to receive interest due on the relevant interest payment date (the "CHANGE
     OF CONTROL PAYMENT"). Within 30 days following any Change of Control, the
     Company will mail a notice to each Holder setting forth the procedures
     governing the Change of Control Offer as required by the Indenture.

               (b) If the Company or a Restricted Subsidiary of the Company
     consummates any Asset Sales, on which the aggregate amount of Excess
     Proceeds exceeds $15.0 million, the Company will commence an offer to all
     Holders of Notes and all holders of other Indebtedness that is PARI PASSU
     with the Notes containing provisions similar to those set forth in the
     Indenture with respect to offers to purchase or redeem with the proceeds of
     sales of assets (an "ASSET SALE OFFER") pursuant to Section 3.09 of the
     Indenture to purchase the maximum principal amount of Notes and other PARI
     PASSU Indebtedness that may be purchased out of the Excess Proceeds at an
     offer price in cash in an amount equal to 100% of the principal amount
     thereof plus accrued and unpaid interest and Liquidated Damages, if any,
     to, but excluding, the date of purchase, in accordance with the procedures
     set forth in the Indenture. To the extent that the aggregate amount of
     Notes and other PARI PASSU Indebtedness tendered pursuant to an Asset Sale
     Offer is less than the Excess Proceeds, the Company (or such Restricted
     Subsidiary) may use such deficiency for any purpose not otherwise
     prohibited by the Indenture. If the aggregate principal amount of Notes and
     other PARI PASSU Indebtedness surrendered by holders thereof exceeds the
     amount of Excess Proceeds, the Trustee shall select the Notes and other
     PARI PASSU Indebtedness 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" attached to 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, except that
     redemption notices may be mailed more than 60 days prior to a redemption
     date if the notice is issued in connection with a defeasance of the Notes
     or a satisfaction or discharge of the Indenture. 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, the Company 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.

                                      A1-4
<Page>

          (11) AMENDMENT, SUPPLEMENT AND WAIVER. Subject to certain exceptions,
     the Indenture, the Subsidiary Guarantees 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 including, without
     limitation, Additional Notes, if any then outstanding voting as a single
     class, and any existing Default or Event of Default compliance with any
     provision of the Indenture, the Subsidiary Guarantees or the Notes may be
     waived with the consent of the Holders of a majority in principal amount of
     the then outstanding Notes and Additional Notes, if any, voting as a single
     class. Without the consent of any Holder of a Note, the Indenture, the
     Subsidiary Guarantees or the Notes may be amended or supplemented to cure
     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 or any Guarantor's obligations to Holders of
     Notes and Subsidiary Guarantees in the case of a merger or consolidation or
     sale of all or substantially all of the Company's or such Guarantor's
     assets, as applicable; 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, to comply
     with the requirements of the SEC in order to effect or maintain the
     qualification of the Indenture under the TIA, to add additional Guarantees
     with respect to the Notes or release Guarantors from Subsidiary Guarantees
     as provided or permitted by the terms of the Indenture; to conform the text
     of the Indenture; or the Notes to any provision of the "Description of
     Notes" section of the Company's Offering Memorandum dated October 16, 2003,
     relating to the initial offering of the Notes, to the extent that such
     provision in that "Description of Notes" was intended to be a verbatim
     recitation of a provision of the Indenture, the Subsidiary Guarantees or
     the Notes.

          (12) DEFAULTS AND REMEDIES. Events of Default include: (i) default for
     30 days in the payment when due of interest or Liquidated Damages with
     respect to the Notes whether or not prohibited by the subordination
     provisions of the Indenture; (ii) default in payment when due of 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 Sections 4.15 or 5.01 of the Indenture; (iv) failure by the
     Company or any of its Restricted Subsidiaries to comply with Sections 4.07
     or 4.09 of the Indenture for 30 days after notice to comply with such
     provisions; (v) failure by the Company for 60 days after notice to the
     Company to comply with certain other agreements in the Indenture; (vi)
     default under certain other agreements relating to Indebtedness of the
     Company which default results in the acceleration of such Indebtedness
     prior to its express maturity; (vii) certain final judgments for the
     payment of money aggregating in excess of $15.0 million that remain
     undischarged for a period of 60 days; (viii) certain events of bankruptcy
     or insolvency with respect to the Company or any of its Restricted
     Subsidiaries that is a Significant Subsidiary or any group of Restricted
     Subsidiaries that, when taken together, would constitute a Significant
     Subsidiary; (ix) failure by the Company or any of its Subsidiaries to
     comply with any of the terms of the Escrow Agreement that are not cured
     within applicable grace periods; and (x) the Escrow Agreement or any other
     security document or Lien purported to be granted thereby on the Escrow
     Account or the cash or Government Securities therein is held in any
     judicial proceeding to be unenforceable or invalid, in whole or in part, or
     ceases for any reason (other than pursuant to a release that is delivered
     or becomes effective as set forth in the Indenture) to be fully enforceable
     and perfect. 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. Notwithstanding the
     foregoing, in the case of an Event of Default arising from certain events
     of bankruptcy or insolvency, all outstanding Notes will become due and
     payable without further action or notice. Holders may not enforce the
     Indenture or the Notes except as provided in the Indenture. Subject to
     certain limitations, the 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

                                      A1-5
<Page>

     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. 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. The Company is required to deliver to the
     Trustee annually a statement regarding compliance with the Indenture, and
     the Company is required upon becoming aware of any Default or Event of
     Default, to deliver to the Trustee a statement specifying such Default or
     Event of Default.

          (13) SUBORDINATION. Payment of principal, interest and premium and
     Liquidated Damages, if any, 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, as such,
     will not have any liability for any obligations of the Company or the
     Guarantors under the Notes, the Subsidiary Guarantees or the Indenture 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 will 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 RESTRICTED GLOBAL NOTES AND
     RESTRICTED DEFINITIVE NOTES. In addition to the rights provided to Holders
     of Notes under the Indenture, Holders of Restricted Global Notes and
     Restricted Definitive Notes will have all the rights set forth in the
     Registration Rights Agreement dated as of October 30, 2003, among the
     Company, the Guarantors and the other parties named on the signature pages
     thereof or, in the case of Additional Notes, Holders of Restricted Global
     Notes and Restricted Definitive Notes will have the rights set forth in one
     or more registration rights agreements, if any, among the Company, the
     Guarantors and the other parties thereto, relating to rights given by the
     Company and the Guarantors to the purchasers of any 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.

                                      A1-6
<Page>

     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:

DRS Technologies, Inc.
5 Sylvan Way
Parsippany, New Jersey 07054
Attention:  Chief Financial Officer

                                      A1-7
<Page>

                                                                       EXHIBIT A

                                 ASSIGNMENT FORM

     To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:___________________________________
                                               (Insert assignee's legal name)
________________________________________________________________________________
                  (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*:__________________________

*    Participant in a recognized Signature Guarantee Medallion Program (or other
signature guarantor acceptable to the Trustee).

                                       A-8
<Page>

                                                                       EXHIBIT A

                       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 appropriate 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 face of this Note)

                              Tax Identification No.:___________________________

Signature Guarantee*:
                      ---------------------------

*    Participant in a recognized Signature Guarantee Medallion Program (or other
signature guarantor acceptable to the Trustee).

                                       A-9
<Page>

                                                                       EXHIBIT A

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

</Table>

* THIS SCHEDULE SHOULD BE INCLUDED ONLY IF THE NOTE IS ISSUED IN GLOBAL FORM.

                                      A-10
<Page>

                                                                       EXHIBIT A

                                      A2-11
<Page>

                                                                       EXHIBIT B

                         FORM OF CERTIFICATE OF TRANSFER

DRS Technologies, Inc.
5 Sylvan Way
Parsippany, New Jersey 07054

The Bank of New York
101 Barclay Street-8 West
New York, New York 10286

     Re:  6 7/8% Senior Subordinated Notes due 2013

     Reference is hereby made to the Indenture, dated as of October 30, 2003
(the "INDENTURE"), among DRS Technologies, Inc., 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 A BENEFICIAL INTEREST IN
THE 144A GLOBAL NOTE OR A RESTRICTED DEFINITIVE NOTE PURSUANT TO RULE 144A. The
Transfer is being effected pursuant to and in accordance with Rule 144A under
the Securities Act of 1933, as amended (the "SECURITIES ACT"), and, accordingly,
the Transferor hereby further certifies that the beneficial interest or
Definitive Note is being transferred to a Person that the Transferor reasonably
believes is purchasing the beneficial interest or Definitive Note 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 beneficial 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 Restricted Definitive Note and
in the Indenture and the Securities Act.

     2. / /  CHECK IF TRANSFEREE WILL TAKE DELIVERY OF A BENEFICIAL INTEREST IN
THE REGULATION S GLOBAL NOTE OR A RESTRICTED DEFINITIVE NOTE 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 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, (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

                                       B-1
<Page>

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 beneficial 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 Restricted Definitive
Note and in the Indenture and the Securities Act.

     3. / /  CHECK AND COMPLETE IF TRANSFEREE WILL TAKE DELIVERY OF A
BENEFICIAL INTEREST IN THE IAI GLOBAL NOTE OR A RESTRICTED DEFINITIVE NOTE
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 beneficial interests in Restricted Global Notes and
Restricted Definitive Notes 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 and in compliance with the
     prospectus delivery requirements of 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, Rule 903
     or Rule 904, and the Transferor hereby further certifies that it has not
     engaged in any general solicitation within the meaning of Regulation D
     under the Securities Act and the Transfer complies with the transfer
     restrictions applicable to beneficial interests in a Restricted Global Note
     or Restricted Definitive Notes and the requirements of the exemption
     claimed, which certification is supported by (1) a certificate executed by
     the Transferee in the form of Exhibit D to the Indenture and (2) 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 provided by the
     Transferor or the Transferee (a copy of which the Transferor has attached
     to this certification), to the effect that such Transfer is in compliance
     with the Securities Act. Upon consummation of the proposed transfer in
     accordance with the terms of the Indenture, the transferred beneficial
     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 Restricted Definitive Notes and in the Indenture and the
     Securities Act.

     4. / /  CHECK IF TRANSFEREE WILL TAKE DELIVERY OF A BENEFICIAL INTEREST IN
AN UNRESTRICTED GLOBAL NOTE OR OF AN UNRESTRICTED DEFINITIVE NOTE.

     (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

                                       B-2
<Page>

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 beneficial interest or Definitive Note will no longer
be subject to the restrictions on transfer enumerated in the Private Placement
Legend printed on the Restricted Global Notes, on Restricted Definitive Notes
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 beneficial interest or
Definitive Note will no longer be subject to the restrictions on transfer
enumerated in the Private Placement Legend printed on the Restricted Global
Notes, on Restricted Definitive Notes 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 beneficial interest or
Definitive Note will not be subject to the restrictions on transfer enumerated
in the Private Placement Legend printed on the Restricted Global Notes or
Restricted Definitive Notes 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) / / a beneficial interest in the:

                    (i)    / /  144A Global Note (CUSIP _________), or

                    (ii)   / /  Regulation S Global Note (CUSIP _________), or

                    (iii)  / /  IAI Global Note (CUSIP _________); or

                (b) / / a Restricted Definitive Note.

     2.   After the Transfer the Transferee will hold:

                                   [CHECK ONE]

                (a) / / a beneficial interest 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) / / a Restricted Definitive Note; or

                (c) / / an Unrestricted Definitive Note,

                in accordance with the terms of the Indenture.

                                       B-4
<Page>

                                                                       EXHIBIT C

                         FORM OF CERTIFICATE OF EXCHANGE

DRS Technologies, Inc.
5 Sylvan Way
Parsippany, New Jersey 07054

The Bank of New York
101 Barclay Street-8 West
New York, New York 10286

     Re:  6 7/8% SENIOR SUBORDINATED NOTES DUE 2013

                              (CUSIP ____________)

     Reference is hereby made to the Indenture, dated as of October 30, 2003
(the "INDENTURE"), among DRS Technologies, Inc., 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 "OWNER") 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 Owner hereby certifies that:

     1.   EXCHANGE OF RESTRICTED DEFINITIVE NOTES OR BENEFICIAL INTERESTS IN A
RESTRICTED GLOBAL NOTE FOR UNRESTRICTED DEFINITIVE NOTES OR BENEFICIAL INTERESTS
IN AN UNRESTRICTED GLOBAL NOTE

     (a) / / CHECK IF EXCHANGE IS FROM BENEFICIAL INTEREST IN A RESTRICTED
GLOBAL NOTE TO BENEFICIAL INTEREST IN AN UNRESTRICTED GLOBAL NOTE. In connection
with the Exchange of the Owner's beneficial interest in a Restricted Global Note
for a beneficial interest in an Unrestricted Global Note in an equal principal
amount, the Owner hereby certifies (i) the beneficial interest is being acquired
for the Owner'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 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 beneficial interest in
an Unrestricted Global Note is being acquired in compliance with any applicable
blue sky securities laws of any state of the United States.

     (b) / / CHECK IF EXCHANGE IS FROM BENEFICIAL INTEREST IN A RESTRICTED
GLOBAL NOTE TO UNRESTRICTED DEFINITIVE NOTE. In connection with the Exchange of
the Owner's beneficial interest in a Restricted Global Note for an Unrestricted
Definitive Note, the Owner hereby certifies (i) the Definitive Note is being
acquired for the Owner'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 Securities Act and (iv) the Definitive Note is 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 NOTE TO BENEFICIAL
INTEREST IN AN UNRESTRICTED GLOBAL NOTE. In connection with the Owner's Exchange
of a Restricted Definitive Note for

                                       C-1
<Page>

a beneficial interest in an Unrestricted Global Note, the Owner hereby certifies
(i) the beneficial interest is being acquired for the Owner'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 beneficial
interest is 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 NOTE TO
UNRESTRICTED DEFINITIVE NOTE. In connection with the Owner's Exchange of a
Restricted Definitive Note for an Unrestricted Definitive Note, the Owner hereby
certifies (i) the Unrestricted Definitive Note is being acquired for the Owner'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 Definitive Note is 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 BENEFICIAL INTERESTS IN
RESTRICTED GLOBAL NOTES FOR RESTRICTED DEFINITIVE NOTES OR BENEFICIAL INTERESTS
IN RESTRICTED GLOBAL NOTES

     (a) / / CHECK IF EXCHANGE IS FROM BENEFICIAL INTEREST IN A RESTRICTED
GLOBAL NOTE TO RESTRICTED DEFINITIVE NOTE. In connection with the Exchange of
the Owner's beneficial interest in a Restricted Global Note for a Restricted
Definitive Note with an equal principal amount, the Owner hereby certifies that
the Restricted Definitive Note is being acquired for the Owner's own account
without transfer. Upon consummation of the proposed Exchange in accordance with
the terms of the Indenture, the Restricted Definitive Note issued will continue
to be subject to the restrictions on transfer enumerated in the Private
Placement Legend printed on the Restricted Definitive Note and in the Indenture
and the Securities Act.

     (b) / / CHECK IF EXCHANGE IS FROM RESTRICTED DEFINITIVE NOTE TO BENEFICIAL
INTEREST IN A RESTRICTED GLOBAL NOTE. In connection with the Exchange of the
Owner's Restricted Definitive Note for a beneficial interest in the [CHECK ONE]
/ /144A Global Note, / / Regulation S Global Note, / /IAI Global Note with an
equal principal amount, the Owner hereby certifies (i) the beneficial interest
is being acquired for the Owner'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 beneficial interest
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:
                                                 -------------------------------

                                       C-2
<Page>

                                                Name:
                                                Title:

Dated:
      --------------------------

                                       C-3
<Page>

                                                                       EXHIBIT D

                            FORM OF CERTIFICATE FROM
                   ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR

DRS Technologies, Inc.
5 Sylvan Way
Parsippany, New Jersey 07054

The Bank of New York
101 Barclay Street-8 West
New York, New York 10286

     Re:  6 7/8% SENIOR SUBORDINATED NOTES DUE 2013

     Reference is hereby made to the Indenture, dated as of October 30, 2003
(the "INDENTURE"), among DRS Technologies, Inc., 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 of:

     (a) / /     a beneficial interest in a Global Note, or

     (b) / /     a Definitive Note,

     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 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(k) 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 Note or
beneficial interest in a Global Note 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.

                                       D-1
<Page>

     3.   We understand that, on any proposed resale of the Notes or beneficial
interest therein, 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.

     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 beneficial interest therein 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 NOTATION OF GUARANTEE

     For value received, each Guarantor (which term includes any successor
Person under the Indenture) has, jointly and severally, unconditionally
guaranteed, to the extent set forth in the Indenture and subject to the
provisions in the Indenture dated as of October 30, 2003 (the "INDENTURE") among
DRS Technologies, Inc., (the "COMPANY"), the Guarantors party thereto and The
Bank of New York, as trustee (the "TRUSTEE"), (a) the due and punctual payment
of the principal of, premium and Liquidated Damages, if any, and interest on,
the Notes, whether at maturity, by acceleration, redemption or otherwise, the
due and punctual payment of interest on overdue principal of and interest on the
Notes, if any, if lawful, and the due and punctual performance of all other
obligations of the Company to the Holders or the Trustee all in accordance with
the terms of the Indenture and (b) in case of any extension of time of payment
or renewal of any Notes or any of such other obligations, that the same will be
promptly paid in full when due or performed in accordance with the terms of the
extension or renewal, whether at stated maturity, by acceleration or otherwise.
The obligations of the Guarantors to the Holders of Notes and to the Trustee
pursuant to the Subsidiary Guarantee and the Indenture are expressly set forth
in Article 10 of the Indenture and reference is hereby made to the Indenture for
the precise terms of the Subsidiary Guarantee. Each Holder of a Note, by
accepting the same, (a) agrees to and shall be bound by such provisions (b)
authorizes and directs the Trustee, on behalf of such Holder, to take such
action as may be necessary or appropriate to effectuate the subordination as
provided in the Indenture and (c) appoints the Trustee attorney-in-fact of such
Holder for such purpose; PROVIDED, HOWEVER, that the Indebtedness evidenced by
this Subsidiary Guarantee shall cease to be so subordinated and subject in right
of payment upon any defeasance of this Note in accordance with the provisions of
the Indenture.

     Capitalized terms used but not defined herein have the meanings given to
them in the Indenture.

                                      [Signature Page Follows]

                                       E-1
<Page>

                                                                       EXHIBIT E

                                      [NAME OF GUARANTOR(S)]

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

                                       E-1
<Page>

                                                                       EXHIBIT F

                         FORM OF SUPPLEMENTAL INDENTURE
                    TO BE DELIVERED BY SUBSEQUENT GUARANTORS

     SUPPLEMENTAL INDENTURE (this "SUPPLEMENTAL INDENTURE"), dated as of
________________, 200__, among __________________ (the "GUARANTEEING
SUBSIDIARY"), a subsidiary of DRS Technologies, Inc. (or its permitted
successor), a Delaware corporation (the "COMPANY"), the Company, the other
Guarantors (as defined in the Indenture referred to herein) and The Bank of New
York, as trustee under the Indenture referred to below (the "TRUSTEE").

                               W I T N E S S E T H

     WHEREAS, the Company has heretofore executed and delivered to the Trustee
an indenture (the "INDENTURE"), dated as of October 30, 2003 providing for the
issuance of 6 7/8% Senior Subordinated Notes due 2003 (the "NOTES");

     WHEREAS, the Indenture provides that under certain circumstances the
Guaranteeing Subsidiary shall execute and deliver to the Trustee a supplemental
indenture pursuant to which the Guaranteeing Subsidiary shall unconditionally
guarantee all of the Company's Obligations 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 Subsidiary 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. The Guaranteeing Subsidiary hereby agrees to
provide an unconditional Guarantee on the terms and subject to the conditions
set forth in the Subsidiary Guarantee and in the Indenture including but not
limited to Article 10 thereof.

     4.   NO RECOURSE AGAINST OTHERS. No past, present or future director,
officer, employee, incorporator, stockholder or agent of the Guaranteeing
Subsidiary, as such, shall have any liability for any obligations of the Company
or any Guaranteeing Subsidiary 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.

     5.   NEW YORK LAW TO GOVERN. THE INTERNAL LAW OF THE STATE OF NEW YORK
SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE BUT WITHOUT
GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT
THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

                                       F-1
<Page>

     6.   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.

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

     8.   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 Subsidiary and the Company.

                                       F-2
<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:  _______________, 20___

                                      [GUARANTEEING SUBSIDIARY]

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

                                      DRS TECHNOLOGIES, INC.

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

                                      [EXISTING GUARANTORS]

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

                                      THE BANK OF NEW YORK
                                          as Trustee

                                      By:
                                          --------------------------------------
                                          Authorized Signatory

                                       F-3

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