Document:

<PAGE>

                                                                   Exhibit 10.19

                                                        "CONFIDENTIAL TREATMENT"

PLEASE NOTE: The only portions of this Plan for which the Applicant seeks
confidential treatment are the financial performance criteria set forth in
Schedule 3, Schedule 3A and Schedule 3B, which have been omitted from the public
filing and are indicated as follows: "(****)"

                             INDEPENDENT BANK CORP.
                           AND ROCKLAND TRUST COMPANY
                  EXECUTIVE OFFICER PERFORMANCE INCENTIVE PLAN

                   Plan Approval, Plan Year, and Defined Terms

     This Independent Bank Corp. And Rockland Trust Company Executive Officer
Performance Incentive Plan (the "Plan") has been approved by the Board on
February 15, 2007, based upon the recommendation of the Compensation Committee,
for use in the 2007 calendar year.

     Capitalized terms used in this Plan are defined as set forth below in
Section 5.

SECTION 1: PURPOSE

     This Plan has been created to provide salaried Executive Officers of the
Holding Company and the Bank who are not entitled to sales commissions with a
cash incentive program designed to motivate them to perform to their full
potential and thereby assist the Holding Company and the Bank in achieving
financial success. The financial success of the Holding Company and the Bank
shall be determined by comparing the financial results of the Holding Company
with specific financial performance goals approved by the Board, based upon the
recommendation of the Compensation Committee.

     A diagram depicting the process and computation used to determine a
Participant's Award, which is more fully described below, is attached hereto as
Schedule 1.

SECTION 2: AWARDS

     Awards to Participants will be determined, and paid, as follows:

a.   PARTICIPANTS. The persons eligible to receive Awards will consist of the
     Executive Officers. ANY EXECUTIVE OFFICERS WHO ARE PAID SALES COMMISSIONS
     ARE NOT ELIGIBLE TO PARTICIPATE IN THIS PLAN. Executive Officers will be
     eligible to participate in this Plan upon their first date of employment.
     Executive Officers with less than one year of service will receive a
     prorated award based on length of service. Newly elected Executive Officers
     will participate in this Plan upon election to Executive Officer status.

b.   AWARD DETERMINATION. The Award for the CEO will be derived from the product
     of the CEO's Target Award multiplied by the Bank Performance Factor. The
     Award for all

                                                                    Page 1 of 13

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                                                        "CONFIDENTIAL TREATMENT"

     Participants other than the CEO will be derived from the product of the
     Participant's Target Award multiplied by the Bank Performance Adjustment
     Factor and multiplied by the Individual Performance Adjustment Factor. The
     Award payable to any Participant, therefore, may be less than or more than
     the Participant's Target Award, depending upon whether, or the extent to
     which, Bank Performance Goals and -- if applicable -- individual
     Performance Goals and Objectives for the Plan Year have been achieved.

c.   TARGET AWARDS. Target Awards will be established by the Board for each
     Participant. The tiers of percentages used to determine Target Awards for
     Executive Officers for the Plan Year is attached hereto as Schedule 2.

d.   BANK PERFORMANCE GOALS. Bank Performance Goals will be established by the
     Board as soon as practical. The Bank Performance Goals for the Plan Year
     are attached hereto as Schedule 3. In general, Bank Performance Goals will
     measure the Holding Company's financial performance and also, when
     appropriate, the achievement of specified strategic goals and/or
     operational objectives.

e.   BANK PERFORMANCE ADJUSTMENT FACTOR. The Bank Performance Adjustment Factor
     may be adjusted upward or downward within the parameters set forth on
     Schedule 3 based upon the performance of the Holding Company as to a given
     performance criteria set forth in the Bank Performance Goals. The range of
     the Bank Performance Adjustment Factor for the CEO with respect to the
     Earnings Per Share Measure is set forth on Schedule 3A. The range of the
     Bank Performance Adjustment Factor for all Participants other than the CEO
     with respect to the Earnings Per Share Measure is set forth on Schedule 3B.
     The range of the Bank Performance Adjustment Factor set forth on Schedule
     3A and Schedule 3B, however, is subject to a 75% reduction if the threshold
     set forth on Schedule 3 for either the Return On Average Equity Measure or
     the Return On Average Assets Measure is not met.

f.   INDIVIDUAL PERFORMANCE ADJUSTMENT FACTOR. The Individual Performance
     Adjustment Factor will not be applicable to the CEO. For all Participants
     other than the CEO, the Individual Performance Adjustment Factor may be
     adjusted upward or downward within the parameters set forth on Schedule 4
     based upon an evaluation of their achievement of individual Performance
     Goals and Objectives for the Plan Year.

g.   PAYMENT OF AWARDS. Awards will be paid, in cash, as soon as practicable
     after the close of the Plan Year. No Award will be payable to any
     Participant who is not an Employee on the last day of the Plan Year except
     that if, during the last eight months of the year, the Participant takes
     normal retirement (as defined in the Bank's principal retirement program),
     dies, or is involuntarily terminated other than for Cause, the Participant
     may be entitled to a prorated Award as and to the extent determined by the
     Board. If a Participant is on disability for more than four months of the
     Plan Year, the Participant will be entitled to a prorated Award. If
     disability lasts four months or less, there will be no reduction in the
     amount of the Award. Participants who resign voluntarily after the end of
     the year, but before Award payments are made, will be eligible for an Award
     as and to the extent determined by the Board. Participants who leave after
     the end of the Plan Year with an overall rating of "1" or "2" on their
     Employee Performance Appraisal for the Plan Year will not be eligible for
     an

                                                                    Page 2 of 13

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                                                        "CONFIDENTIAL TREATMENT"

     Award. In the event of a Change of Control, the funds accrued by the Bank
     to the date of the Change of Control will, subject to the approval of the
     Board, be awarded to the Participants according to the terms of this Plan.

SECTION 3: ADMINISTRATION

This Plan will be administered by the Board, based upon the recommendations of
the Compensation Committee. All determinations regarding the achievement of any
Bank Performance Goals, the achievement of a Participant's individual
Performance Goals and Objectives, and the amount of any individual Award will be
made by the Board, in its sole and absolute discretion, based upon the
recommendations of the Compensation Committee. Notwithstanding any other
provision of this Plan to the contrary, the Board reserves the right, in its
sole and absolute discretion, to: make adjustments to the Bank Performance
Adjustment Factor within the parameters set forth on Schedule 3 based upon
either one-time, non-recurring, or extraordinary events or any other reason that
the Board deems appropriate; increase the Award for the CEO up to a maximum of
1.25 times the amount that would be called for by the product of the CEO's
Target Award multiplied by the Bank Performance Adjustment Factor; and, to
reduce, including a reduction to zero, any Award to a Participant otherwise
payable under this Plan.

a.   AUTHORITY. The Board will have authority (i) to exercise all of the powers
     granted under this Plan, (ii) to construe, interpret and implement this
     Plan and any related document, (iii) to prescribe, amend and rescind rules
     relating to this Plan, (iv) to make all determinations necessary or
     advisable in administering this Plan, and (v) to correct any defect, supply
     any omission and reconcile any inconsistency in this Plan. The Board shall
     also have such other and further specified duties, powers, authority, and
     discretion as are elsewhere expressly set forth in this Plan or as may be
     conferred upon the Board by necessary implication.

b.   DETERMINATIONS FINAL. The actions and determinations of the Board on all
     matters relating to the Plan and any Awards will be final and conclusive,
     except to the extent otherwise provided by law.

c.   LIABILITY. The Board will not be liable for any action taken or
     determination made in good faith with respect to this Plan or any Award
     hereunder, and the Holding Company and the Bank will indemnify and hold the
     Board harmless with respect to any actions taken or decisions made in good
     faith under this Plan.

d.   AWARDS. The Board will have authority to determine, among other things, the
     Executive Officers to whom, and the time or times at which, Awards will be
     made and the requisite conditions thereof.

SECTION 4: MISCELLANEOUS

a.   NONASSIGNABILITY. No Award will be assignable or transferable (including
     pursuant to a pledge or security interest) other than by will or by laws of
     descent and distribution.

                                                                    Page 3 of 13

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                                                        "CONFIDENTIAL TREATMENT"

b.   WITHHOLDING TAXES. Whenever payments under this Plan are to be made, the
     Bank may withhold therefrom an amount sufficient to satisfy any applicable
     governmental withholding tax requirements related thereto.

c.   AMENDMENT OR TERMINATION OF THIS PLAN. The Board may from time to time
     suspend or discontinue this Plan or revise, amend, or terminate this Plan.

d.   NON-UNIFORM DETERMINATIONS. The Board's determinations under this Plan need
     not be uniform and may be made selectively among persons who receive, or
     are eligible to receive, Awards under this Plan, whether or not such
     persons are similarly situated. Without limiting the generality of the
     foregoing, the Board will be entitled, among other things, to make
     non-uniform and selective determinations and to establish non-uniform and
     selective Target Awards. Any non-uniform determinations known at the time
     this Plan was approved are set forth on Schedule 5.

e.   OTHER PAYMENTS OR AWARDS. Nothing contained in this Plan will be deemed in
     any way to limit or restrict the Holding Company, the Bank, or the Board,
     from making any award or payment to any person under any other plan,
     arrangement or understanding, whether now existing or hereafter in effect.

f.   PAYMENTS TO OTHER PERSONS. If payments are legally required to be made to
     any person other than the person to whom any amount is available under this
     Plan, payments will be made accordingly. Any such payment will be a
     complete discharge of the liability of the Holding Company, the Bank,
     and/or the Board.

g.   UNFUNDED PLAN. This is an unfunded Plan. No provision of this Plan will
     require the Holding Company or the Bank, for the purpose of satisfying any
     obligations under this Plan, to purchase assets or place any assets in a
     trust or other entity to which contributions are made or otherwise to
     segregate any assets, nor will the Holding Company or the Bank maintain
     separate bank accounts, books, records or other evidence of the existence
     of a segregated or separately maintained or administered fund for such
     purposes. Participants will have no rights under this Plan other than as
     unsecured general creditors of the Holding Company and the Bank, except
     that insofar as they may have become entitled to payment of additional
     compensation by performance of services, they will have the same rights as
     other employees under generally applicable law.

h.   LIMITS OF LIABILITY. Neither the Holding Company, the Bank, the Board, nor
     any other person participating in any determination of any question under
     this Plan, or in the interpretation, administration or application of this
     Plan, will have any liability to any party for any action taken or not
     taken in good faith under this Plan.

i.   RIGHTS OF EMPLOYEES. Nothing contained in this Plan will confer upon any
     Employee or Participant any right to continue in the employ or other
     service of the Holding Company or the Bank or constitute any contract or
     limit in any way the right of the Holding Company or the Bank to change
     such person's compensation or other benefits or to terminate the employment
     or other service of such person with or without Cause.

                                                                    Page 4 of 13

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                                                        "CONFIDENTIAL TREATMENT"

j.   SECTION HEADINGS. The section headings contained herein are for the
     purposes of convenience only, and in the event of any conflict, the text of
     this Plan, rather than the section headings, will control.

k.   INVALIDITY. If any term or provision contained herein will to any extent be
     invalid or unenforceable, such term or provision will be reformed so that
     it is valid, and such invalidity or unenforceability will not affect any
     other provision or part hereof.

l.   APPLICABLE LAW. The Plan will be governed by the laws of the Commonwealth
     of Massachusetts without regard to the conflict of law principles thereof.

SECTION 5: DEFINITIONS

The following terms, as used herein, will have the meaning specified:

a.   "AWARD" means a cash incentive payment made to a Participant pursuant to
     this Plan.

b.   "BANK" means Rockland Trust Company.

c.   "BANK PERFORMANCE GOALS" means the criteria set forth on Schedule 3 that
     have been selected to measure the Holding Company's financial performance
     and also, when appropriate, the achievement of specified strategic goals
     and/or operational objectives.

d.   "BANK PERFORMANCE ADJUSTMENT FACTOR" means a factor determined by the level
     of performance against the criteria set forth in the Bank Performance
     Goals.

e.   "BOARD" means the Board of Directors of the Holding Company, as it may be
     comprised from time to time.

f.   "CAUSE" means (i) a felony conviction of a Participant; (ii) the commission
     by a participant of an act of fraud or embezzlement against the Bank or the
     Holding Company; (iii) willful misconduct or gross negligence materially
     detrimental to the Holding Company or the Bank; (iv) the Participant's
     continued failure to implement reasonable requests or directions after
     thirty (30) days written notice to the Participant; (v) the Participant's
     wrongful dissemination or use of confidential or proprietary information;
     (vi) the intentional and/or habitual neglect by the Participant of his or
     her duties to the Holding Company or the Bank; or (vii) a breach of the
     Code of Ethics for the Holding Company and the Bank; (viii) any other
     reasons consistent with the Holding Company's and/or the Bank's policies
     and procedures regarding dismissals as they are adopted and implemented
     from time to time.

g.   "CHANGE OF CONTROL" means that, prior to any payout under this Plan (a) any
     "person" (as such term is defined in Section 13 (d) of the Securities
     Exchange Act of 1934, as amended) is or becomes the beneficial owner,
     directly or indirectly, of either (i) a majority of the outstanding common
     stock of the Holding Company or the Bank, or (ii) securities of either the
     Holding Company or the Bank representing a majority of the combined voting
     power of

                                                                    Page 5 of 13

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                                                        "CONFIDENTIAL TREATMENT"

     the then outstanding voting securities of either the Holding Company or the
     Bank, respectively, or (b) during any period of two consecutive years
     following the date of this Plan, individuals who at the beginning of any
     such two year period constitute the Board of Directors of the Holding
     Company cease, at any time after the beginning of such period, for any
     reason to constitute a majority of the Board, unless the election of each
     new director was nominated or approved by at least two thirds of the
     directors of the Board then still in office who were either directors at
     the beginning of such two year period or whose election or whose nomination
     for election was previously so approved.

h.   "CEO" shall mean the Chief Executive Officer of the Holding Company and of
     the Bank.

i.   "COMPENSATION COMMITTEE" means the Joint Compensation Committee of the
     Boards of Directors of the Holding Company and the Bank.

j.   "EXECUTIVE OFFICER" means the CEO and any other person who has been
     identified as an Executive Officer of the Holding Company and/or the Bank
     in filings with the Securities Exchange Commission.

k.   "HOLDING COMPANY" means Independent Bank Corp.

l.   "INDIVIDUAL PERFORMANCE ADJUSTMENT FACTOR" means a factor (or factors) that
     will, when multiplied by a Participant's Target Award and the Bank
     Performance Adjustment Factor, determine the amount of a Participant's
     Award.

m.   "PARTICIPANT" means an Executive Officer selected to participate in this
     Plan whose cash compensation (other than salary) is not superseded by an
     individual employment agreement or other incentive plan. If any employee is
     governed by an individual employment agreement, such employee may be a
     Participant in the Plan to the extent the terms of such agreement does not
     supersede this Plan. EMPLOYEES WHO ARE PAID SALES COMMISSIONS ARE NOT
     ELIGIBLE TO PARTICIPATE IN THIS PLAN.

n.   "PLAN" means this Independent Bank Corp. And Rockland Trust Company
     Executive Officer Performance Incentive Plan.

o.   "PLAN YEAR" shall mean the calendar year for which this Plan has been
     approved.

p.   "TARGET AWARD" means the Participant's base salary on November 1st of the
     Plan Year, multiplied by the target percentage established for that
     Participant.

                                                                    Page 6 of 13

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                                                        "CONFIDENTIAL TREATMENT"

                                                                      SCHEDULE 1

                        2007 Incentive Compensation Plan

                          {2007 Incentive flow chart}

   THE INDIVIDUAL PERFORMANCE ADJUSTMENT FACTOR IS NOT APPLICABLE TO THE CEO.

                                                                    Page 7 of 13

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                                                        "CONFIDENTIAL TREATMENT"

                                                                      SCHEDULE 2

                       PERCENTAGE TIERS USED TO DETERMINE
                      TARGET AWARDS FOR EXECUTIVE OFFICERS

<TABLE>
<S>                                      <C>
President/CEO                            45%
EVP - Commercial Loan                    30%
EVP - Retail & Marketing                 30%
Treasurer/Chief Financial Officer        30%
Director of Human Resources              20%
General Counsel                          20%
Chief Technology & Operations Officer.   20%
</TABLE>

                                                                    Page 8 of 13

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                                                        "CONFIDENTIAL TREATMENT"

                                                                      SCHEDULE 3

                           BANK PERFORMANCE GOALS AND

                       BANK PERFORMANCE ADJUSTMENT FACTORS

<TABLE>
<CAPTION>
                                                BANK PERFORMANCE
                                            GOALS & BANK PERFORMANCE
                                               ADJUSTMENT FACTORS
                                          ----------------------------
MEASURE                                   THRESHOLD   TARGET   MAXIMUM
-------                                   ---------   ------   -------
<S>                  <C>                  <C>         <C>      <C>
HOLDING COMPANY       Performance Level     (****)    (****)    (****)
OPERATING EARNINGS
PER SHARE BEFORE     Adjustment:All but       50%      100%      125%
INCENTIVE PAYMENTS                  CEO

                        Adjustment: CEO       25%      100%      200%

HOLDING COMPANY       Performance Level     (****)
OPERATING RETURN
ON AVERAGE EQUITY*           Adjustment       75%      Not Applicable

HOLDING COMPANY       Performance Level     (****)
OPERATING RETURN
ON AVERAGE ASSETS*           Adjustment       75%
</TABLE>

CONSISTENT WITH THIS PLAN, THE BOARD RESERVES THE RIGHT TO ADJUST ANY AWARDS BY
   CONSIDERING FACTORS INCLUDING - BUT NOT LIMITED TO - COMPLIANCE AND CREDIT
                                     QUALITY

----------
*    The greatest adjustment is a reduction to 75% of the Bank Performance if
     one or both of the Thresholds is missed.

                                                                    Page 9 of 13

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                                                        "CONFIDENTIAL TREATMENT"

ROA AND ROE DEFINITION FOR SCHEDULE 3

For purposes of computing Holding Company Operating Return on Average Assets
("ROA") and Holding Company Operating Return on Average Equity ("ROE") for
purposes of this Plan, earnings are equal to net income as reflected on the
Company's audited consolidated statement of income adjusted, upwards or
downwards, for the after-tax effect of material non-recurring items.

EPS DEFINITION FOR SCHEDULES 3A AND 3B

For purposes of computing Operating Earnings Per Share Before Incentive Payment
("EPS") for purposes of this Plan, earnings are equal to net income as reflected
on the Company's audited consolidated statement of income excluding the
after-tax effect of the incentive expense for this Plan and adjusted, upwards or
downwards, for the after-tax effect of material non-recurring items.

                                                                     SCHEDULE 3A

                    2007 BANK PERFORMANCE ADJUSTMENT FACTORS
                  FOR CEO AT SPECIFIED LEVELS OF EPS ATTAINMENT

<TABLE>
<CAPTION>
Operating
Earnings Per
Share Before                   Bank
Incentive                  Performance
Payment                       Payout
------------               -----------
<S>            <C>         <C>
   (****)      THRESHOLD       25.0%
   (****)                      30.0%
   (****)                      35.0%
   (****)                      40.0%
   (****)                      45.0%
   (****)                      50.0%
   (****)                      55.0%
   (****)                      60.0%
   (****)                      65.0%
   (****)                      82.5%
   (****)      TARGET         100.0%
   (****)                     120.0%
   (****)                     140.0%
   (****)                     160.0%
   (****)                     180.0%
   (****)      MAXIMUM        200.0%
</TABLE>

                                                                   Page 10 of 13

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                                                        "CONFIDENTIAL TREATMENT"

                                                                     SCHEDULE 3B

                    2007 BANK PERFORMANCE ADJUSTMENT FACTORS
                         FOR PARTICIPANTS OTHER THAN CEO
                      AT SPECIFIED LEVELS OF EPS ATTAINMENT

<TABLE>
<CAPTION>
Operating
Earnings Per
Share Before                   Bank
Incentive                  Performance
Payment                       Payout
------------               -----------
<S>            <C>         <C>
   (****)      THRESHOLD       50.0%
   (****)                      52.0%
   (****)                      54.0%
   (****)                      56.0%
   (****)                      58.0%
   (****)                      60.0%
   (****)                      62.0%
   (****)                      64.0%
   (****)                      66.0%
   (****)                      83.0%
   (****)      TARGET         100.0%
   (****)                     105.0%
   (****)                     110.0%
   (****)                     115.0%
   (****)                     120.0%
   (****)      MAXIMUM        125.0%
</TABLE>

                                                                   Page 11 of 13

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                                                        "CONFIDENTIAL TREATMENT"

                                                                      SCHEDULE 4

                    INDIVIDUAL PERFORMANCE ADJUSTMENT FACTORS

<TABLE>
<CAPTION>
Individual Goals and Objectives   Individual Performance
         for Plan Year               Adjustment Factor
-------------------------------   ----------------------
<S>                               <C>
       Does Not Meet Most                   0.0

           Meets Most                    0.6 - 0.8

     Fully Meets All or all
       the most important                0.8 - 1.05

Exceeds Most or most meaningful         1.05 - 1.30

    Exceeds All or performs
       beyond objectives                1.30 - 1.70
</TABLE>

An Executive Officer's achievement of individual performance Goals and
Objectives will be measured at his/her broadest level of individual
responsibility, based upon the "Goals for Next Year" section of his/her
performance appraisal for the Plan Year. The evaluation as to achievement of
individual performance Goals and Objectives will be based on the Board's
judgment of the Executive Officer's performance on results goals only, not
overall performance rating. The Board may adjust an Executive Officer's entire
Award downward if non-goals aspects of performance (e.g., values) assessed with
the Bank's Employee Performance Appraisal are considered less than acceptable.
Awards, however, may not be increased for performance at or better than
acceptable levels on non-goals aspects of performance.

                                                                   Page 12 of 13

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                                                                      SCHEDULE 5

                       NON-UNIFORM DETERMINATIONS FOR 2007

            No non-uniform determinations have yet been made for 2007

                                                                   Page 13 of 13SUPPLEMENTAL INDENTURE TO BE DELIVERED
                          BY GUARANTEEING SUBSIDIARIES

     Supplemental Indenture (this "Supplemental Indenture"), dated as of
February 20, 2007, among L-3 Communications Corporation (or its permitted
successor), a Delaware corporation (the "Company"), each subsidiary of the
Company signatory hereto (each, a "Guaranteeing Subsidiary", and collectively,
the "Guaranteeing Subsidiaries"), and The Bank of New York, as trustee under the
indenture referred to below (the "Trustee").

                                   WITNESSETH

          WHEREAS, the Company has heretofore executed and delivered to the
Trustee an indenture (the "Indenture"), dated as of June 28, 2002 providing for
the issuance of an aggregate principal amount of up to $750,000,000 of 7 5/8%
Senior Subordinated Notes due 2012 (the "Notes");

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

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

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

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

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

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

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

                                        1

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

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

          3. EXECUTION AND DELIVERY OF SUBSIDIARY GUARANTEES.

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

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

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

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

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

               (f)  Each Guaranteeing Subsidiary hereby waives diligence,
                    presentment, demand of payment, filing of claims with a
                    court in the event of insolvency or bankruptcy of the
                    Company, any right to require a proceeding first against the
                    Company, protest, notice and all demands whatsoever and
                    covenants that its Subsidiary Guarantee made pursuant

                                        2

                    to this Supplemental Indenture will not be discharged except
                    by complete performance of the Obligations contained in the
                    Notes and the Indenture.

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

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

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

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

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

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

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

               (b)  Except as set forth in Article 4 of the Indenture, nothing
                    contained in the Indenture, this Supplemental Indenture or
                    in the Notes shall prevent any consolidation or merger of
                    any Guaranteeing Subsidiary with or into a

                                        3

                    corporation or corporations other than the Company or any
                    other Guarantor (in each case, whether or not affiliated
                    with the Guaranteeing Subsidiary), or successive
                    consolidations or mergers in which a Guaranteeing Subsidiary
                    or its successor or successors shall be a party or parties,
                    or shall prevent any sale or conveyance of the property of
                    any Guaranteeing Subsidiary as an entirety or substantially
                    as an entirety, to a corporation other than the Company or
                    any other Guarantor (in each case, whether or not affiliated
                    with the Guaranteeing Subsidiary) authorized to acquire and
                    operate the same; provided, however, that each Guaranteeing
                    Subsidiary hereby covenants and agrees that (i) subject to
                    the Indenture, upon any such consolidation, merger, sale or
                    conveyance, the due and punctual performance and observance
                    of all of the covenants and conditions of the Indenture and
                    this Supplemental Indenture to be performed by such
                    Guaranteeing Subsidiaries, shall be expressly assumed (in
                    the event that such Guaranteeing Subsidiary is not the
                    surviving corporation in the merger), by supplemental
                    indenture satisfactory in form to the Trustee, executed and
                    delivered to the Trustee, by the corporation formed by such
                    consolidation, or into which such Guaranteeing Subsidiary
                    shall have been merged, or by the corporation which shall
                    have acquired such property and (ii) immediately after
                    giving effect to such consolidation, merger, sale or
                    conveyance no Default or Event of Default exists.

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

          5. RELEASES.

               (a)  Concurrently with any sale of assets (including, if
                    applicable, all of the Capital Stock of a Guaranteeing
                    Subsidiary), all Liens, if any, in favor of the Trustee in
                    the assets sold thereby shall be released; provided that in
                    the event of an Asset Sale, the Net Proceeds from such sale
                    or other disposition are treated in accordance with the
                    provisions of Section 4.10 of the Indenture. If the assets
                    sold in such sale or other disposition

                                        4

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

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

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

          6. NO RECOURSE AGAINST OTHERS. No past, present or future director,
officer, employee, incorporator, stockholder or agent of any 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

                                        5

the Notes. Such waiver may not be effective to waive liabilities under the
federal securities laws and it is the view of the SEC that such a waiver is
against public policy.

          7. SUBORDINATION OF SUBSIDIARY GUARANTEES; ANTI-LAYERING. No
Guaranteeing Subsidiary shall incur, create, issue, assume, guarantee or
otherwise become liable for any Indebtedness that is subordinate or junior in
right of payment to any Senior Debt of a Guaranteeing Subsidiary and senior in
any respect in right of payment to any of the Subsidiary Guarantees.
Notwithstanding the foregoing sentence, the Subsidiary Guarantee of each
Guaranteeing Subsidiary shall be subordinated to the prior payment in full of
all Senior Debt of that Guaranteeing Subsidiary (in the same manner and to the
same extent that the Notes are subordinated to Senior Debt), which shall include
all guarantees of Senior Debt.

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

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

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

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

                                        6

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

Dated: February 20, 2007                L-3 COMMUNICATIONS CORPORATION

                                        By:
                                            ------------------------------------
                                            Name: Christopher C. Cambria
                                            Title: Senior Vice President

Dated: February 20, 2007

Apcom, Inc., a Maryland corporation
Broadcast Sports Inc., a Delaware corporation
D.P. Associates, Inc., a Virginia corporation
Electrodynamics, Inc., an Arizona corporation
gForce Technologies, Inc., a Massachusetts corporation
Henschel Inc., a Delaware corporation
Hygienetics Environmental Services, Inc., a Delaware corporation
Interstate Electronics Corporation, a California corporation
KDI Precision Products, Inc., a Delaware corporation
LinCom Wireless, Inc., a Delaware corporation
L-3 Communications Advanced Laser Systems Technology, Inc., a Florida
corporation
L-3 Communications Aeromet, Inc., an Oregon corporation
L-3 Communications AIS GP Corporation, a Delaware corporation
L-3 Communications Applied Signal and Image Technology, Inc., a Maryland
corporation
L-3 Communications Avionics Systems, Inc., a Delaware corporation
L-3 Communications Avisys Corporation, a Texas corporation
L-3 Communications Aydin Corporation, a Delaware corporation
L-3 Communications CE Holdings, Inc., a Delaware corporation
L-3 Communications Cincinnati Electronics, Inc., an Ohio corporation
L-3 Communications Crestview Aerospace Corporation, a Delaware corporation
L-3 Communications CSI, Inc., a California corporation
L-3 Communications CyTerra Corporation, a Delaware corporation
L-3 Communications Dynamic Positioning and Control Systems, Inc., a California
corporation
L-3 Communications Electron Technologies, Inc., a Delaware corporation
L-3 Communications EO/IR, Inc., a Florida corporation
L-3 Communications EOTech, Inc., a Delaware corporation
L-3 Communications ESSCO, Inc., a Delaware corporation
L-3 Communications Foreign Holdings, Inc., a Delaware corporation
L-3 Communications Government Services, Inc., a Virginia corporation
L-3 Communications ILEX Systems, Inc., a Delaware corporation
L-3 Communications InfraredVision Technology Corporation, a California
corporation
L-3 Communications Investments Inc., a Delaware corporation
L-3 Communications Klein Associates, Inc., a Delaware corporation
L-3 Communications MAS (US) Corporation, a Delaware corporation
L-3 Communications MariPro, Inc., a California corporation
L-3 Communications Mobile-Vision, Inc., a New Jersey corporation
L-3 Communications Nautronix Holdings, Inc., a Delaware corporation
L-3 Communications Nova Engineering, Inc., an Ohio corporation
L-3 Communications SafeView, Inc., a Delaware corporation
L-3 Communications Security and Detection Systems, Inc., a Delaware corporation
L-3 Communications Sonoma EO, Inc., a California corporation
L-3 Communications SSG-Tinsley, Inc., a Delaware corporation
L-3 Communications TCS, Inc., a Delaware corporation
L-3 Communications Tinsley Laboratories, Inc., a California corporation
L-3 Communications Titan Corporation, a Delaware corporation
L-3 Communications Westwood Corporation, a Nevada corporation
MCTI Acquisition Corporation, a Maryland Corporation
Microdyne Communications Technologies Incorporated, a Maryland corporation
Microdyne Corporation, a Maryland corporation
Microdyne Outsourcing Incorporated, a Maryland corporation

MPRI, Inc., a Delaware corporation
Pac Ord Inc., a Delaware corporation
Power Paragon, Inc., a Delaware corporation
SPD Electrical Systems, Inc., a Delaware corporation
SPD Switchgear Inc., a Delaware corporation
SYColeman Corporation, a Florida corporation
Titan Facilities, Inc., a Virginia corporation
Troll Technology Corporation, a California corporation
Wescam Air Ops Inc., a Delaware corporation
Wescam Holdings (US) Inc., a Delaware corporation
Wolf Coach, Inc., a Massachusetts corporation

                                        As Guaranteeing Subsidiaries

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

L-3 Communications Integrated Systems L.P., a Delaware limited partnership

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

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

L-3 Communications Flight Capital LLC, a Delaware limited liability company
L-3 Communications Flight International Aviation LLC, a Delaware limited
liability company
L-3 Communications Vector International Aviation LLC, a Delaware limited
liability company

                                        By: L-3 COMMUNICATIONS VERTEX AEROSPACE
                                        LLC, as Sole Member

                                        By: L-3 COMMUNICATIONS INTEGRATED
                                        SYSTEMS L.P., as Sole Member

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

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

L-3 Communications Vertex Aerospace LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS INTEGRATED
                                        SYSTEMS L.P., as Sole Member

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

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

Wescam Air Ops LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS EO/IR, INC.,
                                        as Sole Member

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

Wescam LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS CORPORATION, as
                                        Sole Member

                                        By:
                                            ------------------------------------
                                        Name: Christopher C. Cambria
                                        Title: Senior Vice President

L-3 Communications Germany Holdings, LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS CORPORATION, as
                                        Sole Member

                                        By:
                                            ------------------------------------
                                        Name: Christopher C. Cambria
                                        Title: Senior Vice President

Dated: February 20, 2007                THE BANK OF NEW YORK,
                                        as Trustee

                                        By:
                                            ------------------------------------
                                            Name:
                                            Title: Assistant Vice President

      NOTATION ON SENIOR SUBORDINATED NOTE RELATING TO SUBSIDIARY GUARANTEE

          Pursuant to the Supplemental Indenture (the "Supplemental Indenture")
dated as of February 20, 2007 among L-3 Communications Corporation, a Delaware
corporation, the Guarantors party thereto (each a "Guarantor" and collectively
the "Guarantors") and The Bank of New York, as trustee (the "Trustee"), each
Guarantor (i) has jointly and severally unconditionally guaranteed (a) the due
and punctual payment of the principal of, and premium, interest and Additional
Amounts on the Notes, whether at maturity or an interest payment date, by
acceleration, call for redemption or otherwise, (b) the due and punctual payment
of interest on the overdue principal and premium of, and interest and Additional
Amounts on the Notes, and (c) in case of any extension of time of payment or
renewal of any Notes or any of such other Obligations, the same will be promptly
paid in full when due in accordance with the terms of the extension or renewal,
whether at stated maturity, by acceleration or otherwise and (ii) has agreed to
pay any and all costs and expenses (including reasonable attorneys' fees)
incurred by the Trustee or any Holder in enforcing any rights under the
Subsidiary Guarantee (as defined in the Supplemental Indenture).

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

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

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

          The Subsidiary Guarantee shall not be valid or obligatory for any
purpose until the certificate of authentication on the Note upon which the
Subsidiary Guarantee is noted has been executed by the Trustee under the
Indenture by the manual signature of one of its authorized officers. Capitalized
terms used herein have the meaning assigned to them in the Indenture, dated as
of June 28, 2002, among L-3 Communications Corporation, the Guarantors party
thereto and the Trustee.

Dated: February 20, 2007

Apcom, Inc., a Maryland corporation
Broadcast Sports Inc., a Delaware corporation
D.P. Associates, Inc., a Virginia corporation
Electrodynamics, Inc., an Arizona corporation
gForce Technologies, Inc., a Massachusetts corporation
Henschel Inc., a Delaware corporation
Hygienetics Environmental Services, Inc., a Delaware corporation
Interstate Electronics Corporation, a California corporation
KDI Precision Products, Inc., a Delaware corporation
LinCom Wireless, Inc., a Delaware corporation
L-3 Communications Advanced Laser Systems Technology, Inc., a Florida
corporation
L-3 Communications Aeromet, Inc., an Oregon corporation
L-3 Communications AIS GP Corporation, a Delaware corporation
L-3 Communications Applied Signal and Image Technology, Inc., a Maryland
corporation
L-3 Communications Avionics Systems, Inc., a Delaware corporation
L-3 Communications Avisys Corporation, a Texas corporation
L-3 Communications Aydin Corporation, a Delaware corporation
L-3 Communications CE Holdings, Inc., a Delaware corporation
L-3 Communications Cincinnati Electronics, Inc., an Ohio corporation
L-3 Communications Crestview Aerospace Corporation, a Delaware corporation
L-3 Communications CSI, Inc., a California corporation
L-3 Communications CyTerra Corporation, a Delaware corporation
L-3 Communications Dynamic Positioning and Control Systems, Inc., a California
corporation
L-3 Communications Electron Technologies, Inc., a Delaware corporation
L-3 Communications EO/IR, Inc., a Florida corporation
L-3 Communications EOTech, Inc., a Delaware corporation
L-3 Communications ESSCO, Inc., a Delaware corporation
L-3 Communications Foreign Holdings, Inc., a Delaware corporation
L-3 Communications Government Services, Inc., a Virginia corporation
L-3 Communications ILEX Systems, Inc., a Delaware corporation
L-3 Communications InfraredVision Technology Corporation, a California
corporation
L-3 Communications Investments Inc., a Delaware corporation
L-3 Communications Klein Associates, Inc., a Delaware corporation
L-3 Communications MAS (US) Corporation, a Delaware corporation
L-3 Communications MariPro, Inc., a California corporation
L-3 Communications Mobile-Vision, Inc., a New Jersey corporation
L-3 Communications Nautronix Holdings, Inc., a Delaware corporation
L-3 Communications Nova Engineering, Inc., an Ohio corporation
L-3 Communications SafeView, Inc., a Delaware corporation
L-3 Communications Security and Detection Systems, Inc., a Delaware corporation
L-3 Communications Sonoma EO, Inc., a California corporation
L-3 Communications SSG-Tinsley, Inc., a Delaware corporation
L-3 Communications TCS, Inc., a Delaware corporation
L-3 Communications Tinsley Laboratories, Inc., a California corporation
L-3 Communications Titan Corporation, a Delaware corporation
L-3 Communications Westwood Corporation, a Nevada corporation
MCTI Acquisition Corporation, a Maryland Corporation
Microdyne Communications Technologies Incorporated, a Maryland corporation
Microdyne Corporation, a Maryland corporation
Microdyne Outsourcing Incorporated, a Maryland corporation

MPRI, Inc., a Delaware corporation
Pac Ord Inc., a Delaware corporation
Power Paragon, Inc., a Delaware corporation
SPD Electrical Systems, Inc., a Delaware corporation
SPD Switchgear Inc., a Delaware corporation
SYColeman Corporation, a Florida corporation
Titan Facilities, Inc., a Virginia corporation
Troll Technology Corporation, a California corporation
Wescam Air Ops Inc., a Delaware corporation
Wescam Holdings (US) Inc., a Delaware corporation
Wolf Coach, Inc., a Massachusetts corporation

                                        As Guaranteeing Subsidiaries

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

L-3 Communications Integrated Systems L.P., a Delaware limited partnership

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

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

L-3 Communications Flight Capital LLC, a Delaware limited liability company
L-3 Communications Flight International Aviation LLC, a Delaware limited
liability company
L-3 Communications Vector International Aviation LLC, a Delaware limited
liability company

                                        By: L-3 COMMUNICATIONS VERTEX AEROSPACE
                                        LLC, as Sole Member

                                        By: L-3 COMMUNICATIONS INTEGRATED
                                        SYSTEMS L.P., as Sole Member

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

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

L-3 Communications Vertex Aerospace LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS INTEGRATED
                                        SYSTEMS L.P., as Sole Member

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

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

Wescam Air Ops LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS EO/IR, INC.,
                                        as Sole Member

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

Wescam LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS CORPORATION,
                                        as Sole Member

                                        By:
                                            ------------------------------------
                                        Name: Christopher C. Cambria
                                        Title: Senior Vice President

L-3 Communications Germany Holdings, LLC, a Delaware limited liability company

                                        By: L-3 COMMUNICATIONS CORPORATION,
                                        as Sole Member

                                        By:
                                            ------------------------------------
                                        Name: Christopher C. Cambria
                                        Title: Senior Vice President

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