<table>
<colgroup>
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</colgroup>
<tbody>
<tr class="odd">
<td></td>
<td colspan="40">OMB Approval No. 2700-0042</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="22">amendment of solicitation/</td>
<td colspan="13">1. CONTRACT ID CODE</td>
<td colspan="5">PAGE OF PAGES</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="22">modification of contract</td>
<td colspan="13">NAS 9-98100</td>
<td colspan="2">1</td>
<td colspan="3">9</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="12">2. AMENDMENT/MODIFICATION NO.</td>
<td colspan="8">3. EFFECTIVE DATE</td>
<td colspan="11">4. REQUISITION/PURCHASE REQ. NO.</td>
<td colspan="9">5. PROJECT NO. <em>(If applicable)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="12">Modification 197 (S/A)</td>
<td colspan="8">See Block 16C Below</td>
<td colspan="11">N/A</td>
<td colspan="9">N/A</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="9">6. ISSUED BY</td>
<td colspan="3">CODE</td>
<td colspan="8"></td>
<td colspan="12">7. ADMINISTERED BY <em>(If other than Item 6)</em></td>
<td colspan="3">CODE</td>
<td colspan="5"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="20"><p>NASA LYNDON B. JOHNSON SPACE CENTER</p>
<p>Lawrence A. Kenyon, PCO, Mail Code: BN</p>
<p>2101 NASA Road One</p>
<p>Houston, TX 77058</p></td>
<td colspan="20"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="40">8. NAME AND ADDRESS OF CONTRACTOR <em>(No., street,
county, State, and ZIP Code)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40"><p>LOCKHEED MARTIN SPACE OPERATIONS COMPANY</p>
<p>Attn: Kathy Collins</p>
<p>595 Gemini Avenue</p>
<p>Houston, TX 77058</p></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="6">CODE</td>
<td colspan="14"></td>
<td colspan="8">FACILITY CODE</td>
<td colspan="12"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="4">(x)</td>
<td colspan="16">9A. AMENDMENT OF SOLICITATION NO.</td>
<td colspan="20">9B. DATED <em>(SEE ITEM 11)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="4"></td>
<td colspan="16"></td>
<td colspan="20"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="4"></td>
<td colspan="16">10A. MODIFICATION OF CONTRACT/ORDER NO.</td>
<td colspan="20">10B. DATED <em>(SEE ITEM 13)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="4">X</td>
<td colspan="16">NAS 9-98100</td>
<td colspan="20">10/01/98</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40">11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF
SOLICITATIONS</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="40"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td colspan="2"></td>
<td></td>
<td colspan="25">The above numbered solicitation is amended as set forth
in Item 14. The hour and date specified for receipt of Offers</td>
<td colspan="3"></td>
<td colspan="5">is extended,</td>
<td></td>
<td colspan="6">is not extended.</td>
</tr>
<tr class="even">
<td></td>
<td colspan="40">Offers must acknowledge receipt of this amendment prior
to the hour and date specified in the solicitation or as amended, by one
of the following methods:</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="13"></td>
<td colspan="4"></td>
<td colspan="23"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="13">(a) By completing Items 8 and 15, and returning</td>
<td colspan="2"></td>
<td colspan="23">copies of the amendment; (b) By acknowledging receipt
of this amendment on each copy of the offor</td>
<td colspan="4"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40">submitted; or (c) By separate letter or telegram which
includes a reference to the solicitation and amendment numbers. FAILURE
OF YOUR ACKNOWLEDGEMENT TO</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="40">BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF
OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION
OF</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40">YOUR OFFER. If by virtue of this amendment you desire
to change an offer already submitted, such change may be made by
telegram or letter, provided each telegram</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="40">or letter makes reference to the solicitation and this
amendment, and is received prior to the opening hour and date
specified.</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40">12. ACCOUNTING AND APPROPRIATION DATA <em>(If
required)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="40"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40">13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF
CONTRACTS/ORDERS,<br />
IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.(x)</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5">(x)</td>
<td colspan="35">A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify
authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="12">CONTRACT ORDER NO. IN ITEM 10A.</td>
<td colspan="23"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="35">B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO
REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying
office,</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="35">appropriation date, etc.) SET FORTH IN ITEM 14,
PURSUANT TO THE AUTHORITY OF FAR 43.103(b).</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="35">C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT
TO AUTHORITY OF:</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5">X</td>
<td colspan="35">FAR 52.243-2, Changes – Cost Reimbursement (Aug 87),
Alt. II (Apr 84)</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="35">d. OTHER <em>(Specify type of modification and
authority)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="35"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="8"></td>
<td colspan="3"></td>
<td colspan="2"></td>
<td colspan="4"><strong>X</strong></td>
<td colspan="9"></td>
<td colspan="3"></td>
<td colspan="11"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="7"><strong>E. IMPORTANT:</strong> Contractor</td>
<td colspan="3"></td>
<td colspan="3">is not,</td>
<td colspan="3"><strong>x</strong></td>
<td colspan="7">Is required to sign this document and return</td>
<td colspan="2">3</td>
<td colspan="14">copies to the issuing office.</td>
<td colspan="3"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="40"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40">14. description of amendment/modification
<em>(Organized by UCF section headings, including solicitation/contract
subject matter where feasible.)</em></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="40">See Page Two</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="40">Except as provided herein, all terms and conditions of
the document referenced in Item 9A or 10A, as heretofore changed,
remains unchanged and in full force and effect.</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="20">15A. NAME AND TITLE OF SIGNER <em>(Type or
print)</em></td>
<td colspan="20">16A. NAME AND TITLE OF CONTRACTING OFFICER <em>(Type or
print)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="20">K.J. Collins, CSOC Contracts Manager</td>
<td colspan="20">Jeanne Stevens, Contracting Officer</td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="18">15B. CONTRACTOR/OFFEROR</td>
<td colspan="2">15C. DATE SIGNED</td>
<td colspan="14">16B. UNITED STATES OF AMERICA</td>
<td colspan="6">16C. DATE SIGNED</td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="3"></td>
<td colspan="11">Original Signed by Kathy J. Collins</td>
<td colspan="4"></td>
<td colspan="2">4/9/01</td>
<td>BY</td>
<td colspan="12">Original Signed by Jeanne Stevens</td>
<td></td>
<td colspan="7">Apr 10 2001</td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td colspan="18"><em>(Signature of person authorized to sign)</em></td>
<td colspan="2"></td>
<td colspan="14"><em>(Signature of Contracting Officer)</em></td>
<td colspan="6"></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="19">NSN 7540-01-152-8070<br />
PREVIOUS EDITION UNUSABLE</td>
<td colspan="5">30-105<br />
JSC MS Word (Aug 95)</td>
<td colspan="16"><strong>STANDARD FORM 30</strong> (Rev. 10-83)<br />
Prescribed by GSA<br />
FAR (48 CFR) 53.243</td>
<td colspan="2"></td>
</tr>
</tbody>
</table>

NAS9-98100 Modification 197

Page 2 of 9

I.  The purpose of this modification is to definitize contract change
    order (CCO) 91 that deleted the Compton Gamma Ray Observatory (CGRO)
    as a CSOC responsibility.

> As a result of the above, Section B.1, Estimated Cost and Award Fee,
> is amended to decrease the estimated cost, award fee, and lookback
> fee; Section C, Descriptions/Specifications/Work Statement, is amended
> to update the CSLAs; Section F.4, Option for Additional Effort
> Required During Contract Performance, is amended to decrease the
> estimated cost, award fee, and lookback fee for Option 1; and Appendix
> 3, Award Fee Distribution, is amended to decrease the estimated
> available award fee and lookback fee for both the basic contract and
> option 1.

II. Section B.1, Estimated Cost and Award Fee, is amended to
    [decrease]{.underline} the estimated cost, award fee, and lookback
    fee of the contract by the following delta amounts:

Estimated Cost\* (\$5,157,797)

Estimated LOE Cost No Change

Total Estimated Cost (\$5,157,797)

Maximum Available Award Fee\*\* (\$ 412,624)

Maximum Available Lookback Fee (\$ 103,156)

TOTAL CONTRACT VALUE (\$5,673,577)

\* Excluding LOE Cost

\*\* Excluding Lookback Fee

NAS9-98100 Modification 197

Page 3 of 9

III\. Section C, Descriptions/Specifications/Work Statement, Section
C.1, Statement of Work is amended as follows:

1.  Update Mission Set to show Compton Gamma Ray Observatory (CGRO)
    Committed Stop and Potential Stop date of 6/4/2000.

2.  CGRO and the Gamma Ray Observatory (GRO) are removed as CSOC
    responsibilities from Contract Service Level Agreements B.1.A,
    B.2.A, and B.2.C as per the following tables effective 6/4/2000:

CSLA B.1.A

Table B.1.A-3.0-A Space Science and Earth-Observing Mission Services
Descriptions of Service Elements

  ------------------------------------------------------------------------------------------------
  New       SEID    Service Element Address/Location   Ownership   Security   Operating   Notes
  Service           Description                                    Level      Hours       
  Element                                                                                 
  --------- ------- --------------- ------------------ ----------- ---------- ----------- --------
  GA040     A1030   A.1.30 CGRO MOC GSFC: B14/W210     GO          2          8x7         Ends in
                                                                                          FY01

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

  ------- ------- --------------- -------------- ------- ---- --------- --------
  GA040   A1058   A.1.58 CMF      GSFC: B3/103G  GO      2    12x7      Ends in
                                                                        FY01

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

NAS9-98100 Modification 197

**Page 4 of 9**

  --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  Table B.1.A-3.0-B                                                                                                                                                                                                 
  Space Science and                                                                                                                                                                                                 
  Earth-Observing                                                                                                                                                                                                   
  Mission Services                                                                                                                                                                                                  
  Customers and                                                                                                                                                                                                     
  Services                                                                                                                                                                                                          
  ----------------- ---------- ------------------- -------------- --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- ------- --------- --------- ------- --
  New                                              **CWBS No.                                                                                                                                                       
                                                   (Refer to DRD                                                                                                                                                    
                                                   2.1.1-b)**                                                                                                                                                       

  Service           Customer   Requirement         **2.4.1.\_**                                                                                                                                                     

  Element                                          **1.a**        **1.b**   **2.a**   **2.b**   **3.a**   **3.b**   **4.a**   **4.b**   **5.a**   **5.b**   **6.a**   **6.b**   **7**   **8.b**   **8.d**   **9**   

  CS010             Compton    CGRO Special                                                                                                                                                       X         X       
                    GRO        Request                                                                                                                                                                              

  CS030             Compton    GRO MRR                                                                                                                                                            X         X       
                    GRO                                                                                                                                                                                             

  CS030             Compton    GRO SIRD                                                                                                                                                           X         X       
                    GRO                                                                                                                                                                                             

  GA040             Compton    540-030 Nascom      X              X                                                                                         X         X                                             
                    GRO        System Development                                                                                                                                                                   
                               Plan                                                                                                                                                                                 

  GA040             Compton    DDCS System and     X              X                                                                                         X         X                                             
                    GRO        Functional Level                                                                                                                                                                     
                               Requirements                                                                                                                                                                         
                               Document                                                                                                                                                                             

  GA040             Compton    GRO MRR             X              X         X         X         X         X         X         X                             X         X                                             
                    GRO                                                                                                                                                                                             

  GA040             Compton    GRO SIRD            X              X         X         X         X         X         X         X                             X         X                                             
                    GRO                                                                                                                                                                                             

  GA040             Compton    GRO TPOCC System    X              X         X         X                             X         X                                                                                     
                    GRO        Requirements                                                                                                                                                                         

  GA040             Compton    GSFC GRO Simulator  X              X                                                                                                                                                 
                    GRO        (GGS) User\'s Guide                                                                                                                                                                  

  GA040             Compton    NASA Communications X              X                                                                                         X         X                                             
                    GRO        Operating                                                                                                                                                                            
                               Procedures (NASCOP)                                                                                                                                                                  

  GA040             Compton    NASCOM Low Speed    X              X                                                                                         X         X                                             
                    GRO        Network System                                                                                                                                                                       
                               Requirements                                                                                                                                                                         
                               Document                                                                                                                                                                             

  GA040             Compton    NASCOM Performance  X              X                                                                                         X         X                                             
                    GRO        Assurance                                                                                                                                                                            
                               Requirements                                                                                                                                                                         

  GA040             Compton    NOLAN System        X              X                                                                                         X         X                                             
                    GRO        Requirements                                                                                                                                                                         

  GA040             Compton    Operations                                   X         X                                                                                                                             
                    GRO        Agreement Between                                                                                                                                                                    
                               TPOCC Operations                                                                                                                                                                     
                               Personnel and GRO                                                                                                                                                                    

  GA040             Compton    Operations Concept  X              X         X         X                             X         X                                                                                     
                    GRO        for CGRO ROBOTT                                                                                                                                                                      

  GA040             Compton    SORD for GRO        X              X         X         X                             X         X                                                                                     
                    GRO                                                                                                                                                                                             
  --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

NAS9-98100 Modification 197

**Page 5 of 9**

  ------------------------ ------- ------------- -------------- ------------
  Table B.1.A-4.1.0 CSOC                                        
  IOA Interdependencies                                         

  Development Requirement  DP1     NASA          Technical      NASA
                                   Development   Performance    Initiative
                                   Initiative                   Complete

  CGRO MOC reengineered to 10/99   GRO TPOCC and Automation     FY98
  run in the GSFC IMOC.            ROBOTT        initiative     
  ------------------------ ------- ------------- -------------- ------------

######  

  -----------------------------------------------------------------------------------------------------------
  Table                                                                                        
  B.2.A-3.0-A                                                                                  
  Tracking, Data                                                                               
  Acquisition,                                                                                 
  and Command                                                                                  
  Data Services                                                                                
  Descriptions                                                                                 
  of Service                                                                                   
  Elements                                                                                     
  -------------- ------- --------------- ------------------ ----------- ---------- ----------- --------------
  New Service    SEID    Service Element Address/Location   Ownership   Security   Operating   Notes
  Element                Description                                    Level      Hours       

  CD101          A1075   A.1.75 Remote   Canberra DSCC:     ASO         3          24x7        Consolidated
                         GRO Relay       Tidbinbilla,                                          into CD101
                         Terminal        Australia                                             during FY99
  -----------------------------------------------------------------------------------------------------------

NAS9-98100 Modification 197

**Page 6 of 9**

  -----------------------------------------------------------------------------------------------------------
  Table                                                                                                
  B.2.A-3.0-B                                                                                          
  Tracking, Data                                                                                       
  Acquisition,                                                                                         
  and Command                                                                                          
  Data Services                                                                                        
  Customers and                                                                                        
  Services                                                                                             
  -------------- ---------- --------------------- ---------- --- --- --- --- ----- ----- ------ ------ ------
  New                                             CWBS No.                                             
                                                  (Refer to                                            
                                                  DRD                                                  
                                                  2.1.1-b)                                             

  Service        Customer   Requirement           2.4.2.\_                                             

  Element                                         1          2   3   4   5   7.e   9.b   10.b   10.c   10.e

  CD101          Compton    Functional and        X          X   X   X   X                             
                 GRO        Performance                                                                
                            Requirements for the                                                       
                            Phase 1 GRO Remote                                                         
                            Terminal System                                                            

  CD101          Compton    GRO MRR               X          X   X   X   X                             
                 GRO                                                                                   

  CD101          Compton    GRO SIRD              X          X   X   X   X                             
                 GRO                                                                                   

  CD101          Compton    Supplement to the     X          X   X   X   X                             
                 GRO        Mission Operations                                                         
                            Support Plan for the                                                       
                            Gamma Ray Observatory                                                      

  CS010          Compton    Functional &                                                               X
                 GRO        Performance                                                                
                            Requirements for the                                                       
                            Phase I GRO Remote                                                         
                            Terminal System                                                            
                            (GRTS)                                                                     

  CS010          Compton    GRO MRR                                                                    X
                 GRO                                                                                   

  CS010          Compton    GRO SIRD                                                                   X
                 GRO                                                                                   

  CS030          Compton    GRO MRR                                                                    X
                 GRO                                                                                   

  CS030          Compton    GRO SIRD                                                                   X
                 GRO                                                                                   

  GA050          Compton    GRO MRR                                                                    X
                 GRO                                                                                   

  GA050          Compton    GRO SIRD                                                                   X
                 GRO                                                                                   

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

NAS9-98100 Modification 197

Page 7 of 9

CSLA B.2.C

  ------------- ---------- ------------------ ---------- ----- ----- ----- ----- ----- ----- ----- ----- ----- ------ ------ ------
  Table                                                                                                                      
  B.2.C-3.0-B                                                                                                                
  Network                                                                                                                    
  Management                                                                                                                 
  Data Services                                                                                                              
  Customers and                                                                                                              
  Services                                                                                                                   

  New                                         CWBS No.                                                                       
                                              (Refer to                                                                      
                                              DRD                                                                            
                                              2.1.1-b)                                                                       

  Service       Customer   Requirement        2.4.2.\_                                                                       

  Element                                     6.a        6.b   6.c   6.d   6.e   7.a   7.b   7.c   7.d   7.e   10.a   10.d   10.e

  CD200         Compton    GRO MRR                                               X     X     X     X                         
                GRO                                                                                                          

  CD200         Compton    GRO SIRD                                              X     X     X     X                         
                GRO                                                                                                          

  CS010         Compton    GRO MRR                                                                                           X
                GRO                                                                                                          

  CS010         Compton    GRO SIRD                                                                                          X
                GRO                                                                                                          
  ------------- ---------- ------------------ ---------- ----- ----- ----- ----- ----- ----- ----- ----- ----- ------ ------ ------

3\. Also from CSLA B.2.A remove as *italicized in parentheses* below
from front matter text page 1

-   Space Network (SN) *( Remote Gamma Ray Observatory (GRO) Relay
    Terminal in Australia )*

    and remove from last page under section 5.1 Major Transition Events

( *The Remote GRO Relay Terminal (RGRT) will close 4/99.*)

**IV. Section F.4, Option for Additional Effort Required During Contract
Performance, Option 1, Extension of Period of Performance, Paragraph
A**, is amended to [decrease]{.underline} the estimated cost, award fee,
and lookback fee by the following delta amounts:

> B.1, entitled "Estimated Cost and Award Fee" shall be modified to
> reflect the delta [decrease]{.underline} of (\$3,200,459) to the
> estimated cost, the delta [decrease]{.underline} of (\$256,037) to the
> maximum available award fee (excluding lookback fee) and the delta
> [decrease]{.underline} of (\$64,010) to the maximum available lookback
> fee.

NAS9-98100 Modification 197

Page 8 of 9

V.  **Appendix 3, Award Fee Distribution,** is amended to
    [decrease]{.underline} the award fee and lookback fee available for
    the basic contract and Option 1 by the following delta amounts:

**Estimated AF**

**Evaluation Period Earned/Available**

+-------------------------------------------------+--------------------+
| **BASIC CONTRACT**                              |                    |
+-------------------------------------------------+--------------------+
| October 1, 1998- June 30, 1999                  | No Change          |
+-------------------------------------------------+--------------------+
| July 1, 1999 -- December 31, 1999               | No Change          |
+-------------------------------------------------+--------------------+
| January 1, 2000 -- June 30, 2000                | No Change          |
+-------------------------------------------------+--------------------+
| July 1, 2000 -- December 31, 2000               | No Change          |
+-------------------------------------------------+--------------------+
| January 1, 2001 -- June 30, 2001                | (\$80,534)         |
+-------------------------------------------------+--------------------+
| July 1, 2001 -- December 31, 2001               | (\$79,380)         |
+-------------------------------------------------+--------------------+
| January 1, 2002 -- June 30, 2002                | (\$66,470)         |
+-------------------------------------------------+--------------------+
| July 1, 2002 -- December 31, 2002               | (\$66,336)         |
+-------------------------------------------------+--------------------+
| January 1, 2003 -- June 30, 2003                | (\$59,952)         |
+-------------------------------------------------+--------------------+
| July 1, 2003 -- December 31, 2003               | (\$59,952)         |
+-------------------------------------------------+--------------------+
|                                                 |                    |
+-------------------------------------------------+--------------------+
| ####### Total Available Award Fee               | **(\$412,624)**    |
+-------------------------------------------------+--------------------+
|                                                 |                    |
+-------------------------------------------------+--------------------+
| **OPTION 1 (if exercised)**                     |                    |
+-------------------------------------------------+--------------------+
| January 1, 2004 - June 30, 2004                 | (\$27,704)         |
+-------------------------------------------------+--------------------+
| July 1, 2004 - December 31, 2004                | (\$27,705)         |
+-------------------------------------------------+--------------------+
| January 1, 2005 - June 30, 2005                 | (\$26,107)         |
+-------------------------------------------------+--------------------+
| July 1, 2005 - December 31, 2005                | (\$26,107)         |
+-------------------------------------------------+--------------------+
| January 1, 2006 -June 30, 2006                  | (\$25,519)         |
+-------------------------------------------------+--------------------+
| July 1, 2006 - December 31, 2006                | (\$25,519)         |
+-------------------------------------------------+--------------------+
| January 1, 2007 - June 30, 2007                 | (\$24,749)         |
+-------------------------------------------------+--------------------+
| July 1, 2007 - December 30, 2007                | (\$24,749)         |
+-------------------------------------------------+--------------------+
| January 1, 2008 - June 30, 2008                 | (\$23,939)         |
+-------------------------------------------------+--------------------+
| July 1, 2008 - December 31, 2008                | (\$23,939)         |
+-------------------------------------------------+--------------------+
|                                                 |                    |
+-------------------------------------------------+--------------------+
| ######## Total Available Award Fee              | **(\$256,037)**    |
+-------------------------------------------------+--------------------+
|                                                 |                    |
+-------------------------------------------------+--------------------+
| **"LOOKBACK" PERIOD**                           |                    |
+-------------------------------------------------+--------------------+
| October 1, 1998 -- December 31, 2000            | No Change          |
+-------------------------------------------------+--------------------+
| January 1, 2001 -- December 31, 2003            | (\$103,156)        |
+-------------------------------------------------+--------------------+
| **Total Available Lookback Fee for Basic        | **(\$103,156)**    |
| Contract**                                      |                    |
+-------------------------------------------------+--------------------+
|                                                 |                    |
+-------------------------------------------------+--------------------+
| **OPTION 1 (if exercised)**                     |                    |
+-------------------------------------------------+--------------------+
| January 1, 2004 -- December 31, 2005            | (\$26,908)         |
+-------------------------------------------------+--------------------+
| January 1, 2006 -- December 31, 2008            | (\$37,102)         |
+-------------------------------------------------+--------------------+
| **Total Available Lookback Fee for Option 1**   | **(\$64,010)**     |
+-------------------------------------------------+--------------------+

NAS9-98100 Modification 197

Page 9 of 9

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

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

VI. This modification is agreed to be a complete and equitable
    adjustment for the contractor's credit proposal dated 9/15/2000, as
    updated 11/16/2000, and for all work included under this
    modification. The contractor hereby releases the Government from any
    and all liability under this contract for further equitable
    adjustments.

VII. All other terms and conditions of the contract remain unchanged.

\- End Modification 197-