CTA INCORPORATED
SC 13E4/A, 1997-12-02
COMPUTER PROGRAMMING SERVICES
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                                SCHEDULE 13E-4/A


                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
                         ISSUER TENDER OFFER STATEMENT
     (PURSUANT TO SECTION 13(E)(1) OF THE SECURITIES EXCHANGE ACT OF 1934)

                               CTA INCORPORATED
         _____________________________________________________________
                               (Name of Issuer)

                               CTA INCORPORATED
         _____________________________________________________________
                     (Name of Person(s) Filing Statement)

                    COMMON STOCK, $.01 PAR VALUE PER SHARE
         _____________________________________________________________
                        (Title of Class of Securities)

         __________________________129997714__________________________
                     (CUSIP Number of Class of Securities)

                               GREGORY H. WAGNER
                           Executive Vice President
                               CTA INCORPORATED
                           6116 Executive Boulevard
                          Rockville, Maryland  20852
                                (301) 816-1200
      (Name, Address and Telephone Number of Person Authorized to Receive
    Notices and Communications on Behalf of the Person(s) Filing Statement)

                                  COPIES TO:
                            RICHARD A. STEINWURTZEL
                   Fried, Frank, Harris, Shriver & Jacobson
                        1001 Pennsylvania Avenue, N.W.
                                   Suite 800
                         Washington, D.C.  20004-2505
                                (202) 639-7000

                               November 26, 1997
         _____________________________________________________________
    (Date Tender Offer First Published, Sent or Given to Security Holders)

                           CALCULATION OF FILING FEE
   _________________________________________________________________________
       Transaction  Valuation*:                                Amount of Filing
Fee:
          $2,020,000                                                 $404.00
  __________________________________________________________________________

*      Calculated solely for purposes of determining the filing fee, based upon
    the purchase of 200,000  shares at the maximum tender offer price per share
    of $10.10.

[ ]  Check box if any part of  the fee is offset as provided by Rule 0-11(a)(2)
and identify the filing with which  the  offsetting  fee  was  previously paid.
Identify the previous filing by registration statement number, or  the  Form or
Schedule and the date of its filing.

Amount Previously Paid:          N/A                 Filing Party:       N/A
Form or Registration No.:        N/A                 Date Filed          N/A
<PAGE>
ITEM 1.  SECURITY AND ISSUER.

     (a)  The  issuer  of  the  securities  to  which this Schedule 13E-4
relates is CTA INCORPORATED, a Colorado corporation  (the "Company"), and
the  address  of  its  principal  executive  office  is  6116   Executive
Boulevard, Rockville, Maryland  20852.

     (b)  This  Schedule  13E-4  relates  to the offer by the Company  to
purchase up to 200,000 shares (or such lesser  number  of  shares  as are
validly  tendered  and not withdrawn) of its common stock, $.01 par value
per share (the "Shares"), for a purchase price of $10.10 per Share net to
the Seller in cash upon the terms and subject to the conditions set forth
in  the  Offer to Purchase,  dated  November  26,  1997  (the  "Offer  to
Purchase"),  and  in  the  related  Letter of Transmittal (which together
constitute the "Offer"), copies of which  are attached as Exhibits (a)(1)
and (a)(2), respectively, and incorporated  herein  by  reference.  As of
November 24, 1997, 4,551,088 Shares were issued and outstanding.

     The  Company  completed the sale of its Space and Telecommunications
Systems business and  its  Mobile Information and Communications Services
business (the "Space Business")  to  Orbital  Sciences  Corporation.  The
Company received approximately $47.0 million of proceeds from the sale of
the Space Business and decided to effect the Offer to allow  stockholders
to benefit from such sale.  The Company intends to use approximately $2.0
million (excluding expenses) from amounts drawn under its revolving  line
of credit to conduct this Offer.

     Officers, directors and affiliates of the Company may participate in
the  Offer  on  the  same basis as the other stockholders of the Company.
Dr. C.E. Velez, President,  Chief  Executive  Officer and Chairman of the
Board and Messrs B.A. Claussen and Terry J. Piddington  have informed the
Company that they will not tender any Shares in the Offer.   The Trustees
of  the  Company's  Employee  Stock  Ownership Plan (the "ESOP") and  the
Company's Defined Contribution 401(k) Retirement Plan (the "401(k) Plan")
have informed the Company that they will  not  tender  any  Shares in the
Offer on behalf of the ESOP or the 401(k) Plan.  As of November  24, 1997
2,321,040  Shares  (approximately  51%)  were  owned  by  Dr. C.E. Velez,
359,817 shares (approximately 7.9%) were owned by Mr. B.A.  Claussen  and
216,001   shares   (approximately  4.7%)  were  owned  by  Mr.  Terry  J.
Piddington. The information  set  forth  in  "Introduction,"  Section  1,
"Number  of Shares; Proration," Section 8, "Background and Purpose of the
Offer," Section  10, "Transactions and Agreements Concerning Shares," and
Section 14, "Certain  Federal  Income  Tax Consequences," of the Offer to
Purchase is incorporated herein by reference.

     (c)  The  information  set forth in "Introduction"  and  Section  7,
"Price  Range  of  Shares;  Dividends,"  of  the  Offer  to  Purchase  is
incorporated herein by reference.

     (d)  Not applicable.  This Statement is being filed by the Issuer.

ITEM 2.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

     (a)-(b)   The information set forth in Section 9, "Source and Amount
of Funds," of the Offer to Purchase is incorporated herein by reference.

ITEM 3.   PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF
        THE ISSUER OR AFFILIATE.

     (a)-(j)   The information  set  forth  in "Introduction," Section 8,
"Background and Purpose of the Offer," Section  9,  "Source and Amount of
Funds,"  Section  10,  "Transactions  and Agreements Concerning  Shares,"
Section 12, "Effects of the Offer on the  Market for Shares," and Section
14, "Certain Federal Income Tax Consequences,"  of  the Offer to Purchase
is incorporated herein by reference.

ITEM 4.  INTEREST IN SECURITIES OF THE ISSUER.

     The information set forth in "Introduction," Section  8, "Background
and  Purpose of the Offer," and Section 10, "Transactions and  Agreements
Concerning  Shares,"  of  the Offer to Purchase is incorporated herein by
reference.

ITEM 5.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR
        RELATIONSHIPS WITH RESPECT TO THE ISSUER'S SECURITIES.

     The Information set forth  in "Introduction," Section 8, "Background
and Purpose of the Offer," Section  9,  "Source  and  Amount  of  Funds,"
Section 10, "Transactions and Agreements Concerning Shares," Section  14,
"Certain  Federal  Income  Tax  Consequences,"  and  Section  16,  "Fees,
Expenses   and   Other   Arrangements,"  of  the  Offer  to  Purchase  is
incorporated herein by reference.

ITEM 6.  PERSONS RETAINED, EMPLOYED, OR TO BE COMPENSATED.

     The information set forth  in "Introduction," Section 8, "Background
and Purpose of the Offer," and Section  16,  "Fees,  Expenses  and  Other
Arrangements,"  of  the  Offer  to  Purchase  is  incorporated  herein by
reference.

ITEM 7.  FINANCIAL INFORMATION.

     (a)-(b)   The  information  set  forth  in  Section  11,  "Financial
Information  Concerning  the  Company"  of the Offer to Purchase and  the
financial statements and notes related thereto contained in the Company's
Annual Report on Form 10-K for the fiscal  year  ended  December 31, 1996
and its Quarterly Report on Form 10-Q for the quarter ended September 30,
1997, copies of which are attached hereto as Exhibits (g)(1)  and (g)(2),
respectively, are incorporated herein by reference.

ITEM 8.  ADDITIONAL INFORMATION.

     (a)-(d)   Not Applicable.
     (e)  The   information  set  forth  in  the  Offer  to  Purchase  is
incorporated herein by reference.
ITEM 9.  MATERIAL TO BE FILED AS EXHIBITS.

     (a)(1) -- Form of Offer to Purchase dated November 26, 1997.
        (2) --     Form    of    Letter    of   Transmittal   (including
Certification of Taxpayer Identification Number on Substitute Form W-9).
        (3) --     Form of Letter to Stockholders of the Company,  dated
November 26, 1997 from Dr.  C.E.  Velez,  Chairman  of  the Board and Chief
Executive Officer.
     (b)(1)    Financing and Security Agreement dated November 6, 1997 by
and between the Company    and    First    Union    Commercial
Corporation.
     (c)(1) -- Stock  Purchase  Agreement between and among the ESOP  and
Dr. C.E. Velez,  Mr.  B.A.  Claussen  and  Mr. Terry J. Piddington dated
November 21, 1997.
     (d)     --     Not Applicable.
     (e)     --     Not Applicable.
     (f)     --     Not Applicable.
     (g)(1) -- The Company's Annual Report on Form  10-K  for  the fiscal
year ended December 31, 1996 (incorporated by reference).
        (2) --     The Company's Quarterly Report on Form 10-Q  for  the
quarter ended September 30, 1997 (incorporated by reference).
        (3) --     Appraisal  of  Legg  Mason  Wood  Walker Incorporated
dated September 10, 1997.
<PAGE>
SIGNATURE

     After  due  inquiry and to the best of my knowledge  and  belief,  I
certify  that the information  set  forth  in  this  statement  is  true,
complete and correct.

                              CTA INCORPORATED


                              By:       /S/  GREGORY H. WAGNER
     November 26, 1997             Name:     Gregory H. Wagner
                                   Title:  Executive  Vice  President and
                                   Chief Financial Officer and Treasurer


<PAGE>
                              EXHIBIT INDEX

EXHIBIT             DESCRIPTION

(a)(1) Form of Offer to Purchase dated November 26, 1997.
   (2) Form  of  Letter  of  Transmittal  (including  Certification of
       Taxpayer Identification Number on Substitute Form W-9).
   (3) Form  of  Letter to Stockholders of the Company, dated November
       26, 1997 from  Dr.  C.E. Velez, Chairman of the Board and Chief
       Executive Officer.
(b)(1) Financing  and Security Agreement dated November 6, 1997 by and
       between the Company and First Union Commercial Corporation.
(c)(1) Stock  Purchase  Agreement  between  and among the ESOP and Dr.
       C.E.  Velez,  Mr. B.A. Claussen and Mr.  Terry  J.  Piddington,
       dated November 21, 1997.
   (d) Not Applicable.
   (e) Not Applicable.
   (f) Not Applicable.
(g)(1) The  Company's  Annual  Report on Form 10-K for the fiscal year
       ended December 31, 1996 (incorporated by reference).
   (2) The  Company's  Quarterly  Report  on Form 10-Q for the quarter
       ended September 30, 1997 (incorporated by reference).
   (3) Appraisal   of   Legg  Mason  Wood  Walker  Incorporated  dated
       September 10, 1997.



                            CTA INCORPORATED

                       OFFER TO PURCHASE FOR CASH
                UP TO 200,000 SHARES OF ITS COMMON STOCK
                         AT $10.10 NET PER SHARE

       THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS EXPIRE AT
         12:00 MIDNIGHT, ROCKVILLE, MARYLAND TIME, ON WEDNESDAY,
            DECEMBER 31, 1997, UNLESS THE OFFER IS EXTENDED.


     CTA  INCORPORATED,  a Colorado corporation (the "Company"),  invites
its stockholders to tender shares of its Common Stock, par value $.01 per
share (the "Shares"), at $10.10  per Share (the "Purchase Price"), net to
the seller in cash, upon the terms  and  subject  to  the  conditions set
forth  herein  and  in the related Letter of Transmittal (which  together
constitute the "Offer").   The  Company  will purchase any and all Shares
(up to 200,000 Shares) validly tendered and not withdrawn, upon the terms
and  subject  to the conditions of the Offer,  including  the  provisions
thereof relating  to  proration  described  herein.  Shares not purchased
because of proration will be returned promptly.

                     ______________________________

         THE OFFER IS NOT CONDITIONED UPON ANY MINIMUM NUMBER OF
             SHARES BEING TENDERED.  THE OFFER IS, HOWEVER,
          SUBJECT TO CERTAIN OTHER CONDITIONS.  SEE SECTION 6.

                     ______________________________

                                IMPORTANT

     ANY STOCKHOLDER DESIRING TO TENDER ANY PORTION  OF HIS OR HER SHARES
SHOULD COMPLETE AND SIGN THE LETTER OF TRANSMITTAL OR A PHOTOCOPY THEREOF
IN ACCORDANCE WITH THE INSTRUCTIONS IN THE LETTER OF TRANSMITTAL AND MAIL
OR  DELIVER  IT  AND  ANY OTHER REQUIRED DOCUMENTS TO CAPITOL  SECURITIES
MANAGEMENT INCORPORATED AT THE ADDRESS SET FORTH IN THE LAST PAGE OF THIS
OFFER  TO  PURCHASE.   IN   THE  EVENT  A  STOCKHOLDER  HOLDS  SHARES  IN
CERTIFICATE FORM SUCH STOCKHOLDER SHOULD DELIVER TO CAPITOL THE LETTER OF
TRANSMITTAL ALONG WITH THE CERTIFICATE(S) FOR SUCH SHARES.

     NEITHER THE COMPANY NOR  ANY OF ITS DIRECTORS, OFFICERS OR EMPLOYEES
MAKES ANY RECOMMENDATION TO ANY  STOCKHOLDER  AS  TO WHETHER TO TENDER OR
REFRAIN FROM TENDERING SHARES.  EACH STOCKHOLDER MUST MAKE HIS OR HER OWN
DECISION AS TO WHETHER TO TENDER SHARES AND, IF SO,  HOW  MANY  SHARES TO
TENDER.

                       ___________________________

     The  Shares  are  not  listed,  traded  or  quoted  on  any national
securities exchange or other market.

     Questions  or  requests  for assistance or for additional copies  of
this Offer to Purchase, the Letter  of  Transmittal or other tender offer
materials may be directed to the Information  Agent  at  the  address and
telephone number set forth on the last page of this Offer to Purchase.

                       ___________________________

                 THE INFORMATION AGENT FOR THE OFFER IS:
               CAPITOL SECURITIES MANAGEMENT INCORPORATED
                       ___________________________


November 26, 1997
<PAGE>

     NO  PERSON HAS BEEN AUTHORIZED TO MAKE ANY RECOMMENDATION ON  BEHALF
OF THE COMPANY  AS  TO WHETHER STOCKHOLDERS SHOULD TENDER OR REFRAIN FROM
TENDERING SHARES PURSUANT TO THE OFFER.  NO PERSON HAS BEEN AUTHORIZED TO
GIVE ANY INFORMATION  OR  TO  MAKE ANY REPRESENTATIONS IN CONNECTION WITH
THE  OFFER  OTHER  THAN  THOSE CONTAINED  HEREIN  OR  IN  THE  LETTER  OF
TRANSMITTAL.  IF GIVEN OR  MADE, SUCH RECOMMENDATION AND SUCH INFORMATION
AND REPRESENTATIONS MUST NOT  BE RELIED UPON AS HAVING BEEN AUTHORIZED BY
THE COMPANY.

                            TABLE OF CONTENTS

                                                                     PAGE

     SUMMARY                                                   1

     INTRODUCTION                                              4

     THE OFFER                                                 5

     1.   Number of Shares; Proration                          5
     2.   Tenders by Holders of Ninety-Nine or Fewer Shares    7
     3.   Procedure for Tendering Shares                       8
     4.   Withdrawal Rights                                    9
     5.   Acceptance for Payment  of Shares and Payment 
          of Purchase Price                                   10
     6.   Certain Conditions of the Offer                     10
     7.   Price Range of Shares; Dividends                    12
     8.   Background and Purpose of the Offer                 13
     9.   Source and Amount of Funds                          15
     10.  Transactions and Agreements Concerning Shares       15
     11.  Financial Information Concerning the Company        16
     12.  Effects of the Offer on the Market for Shares       17
     13.  Regulatory Approvals                                18
     14.  Certain Federal Income Tax Consequences             18
     15.  Extension of Tender Period; Termination; Amendments 22
     16.  Fees, Expenses and Other Arrangements               23
     17.  Miscellaneous                                       24


<PAGE>
                                 SUMMARY

     This  general summary is provided  solely  for  the  convenience  of
holders of Shares  and  is  qualified in its entirety by reference to the
full text of and the more specific  details  contained  in  this Offer to
Purchase and the related Letter of Transmittal and any amendments  hereto
and  thereto.   Capitalized terms used in this summary without definition
shall have the respective  meanings  ascribed to such terms in this Offer
to Purchase.

The Company                   CTA INCORPORATED,  a  Colorado corporation
                              with  principal  executive  offices at 6116
                              Executive Boulevard, Suite 800,  Rockville,
                              Maryland  20852.

The Shares                    Shares  of the Company's Common Stock,  par
                              value $.01 per Share.

Number of Shares Sought       200,000 Shares.

Purchase Price                $10.10 per  Share,  net  to  the  seller in
                              cash.

Expiration Date of Offer      Wednesday,  December  31,  1997,  at  12:00
                              Midnight,  Rockville, Maryland time, unless
                              extended by  the  Company  pursuant  to the
                              terms hereof.

How to Tender Shares          See  Section  3.   For further information,
                              call   the   Information   Agent,   Capitol
                              Securities  Management  Incorporated,  8301
                              Greensboro  Drive,   Suite   150,   McLean,
                              Virginia 22102, tel. (800) 878-2010.

Proration                     If  more  than  200,000  Shares  have  been
                              validly  tendered  and  not withdrawn on or
                              prior to the Expiration Date,  the purchase
                              of  Shares  will  be  subject to proration.
                              After  the purchase of Odd  Lot  Shares  as
                              described  below,  Shares will be purchased
                              on a pro rata basis.   Proration  of Shares
                              will be based on the ratio of the number of
                              Shares  to  be  purchased  by  the  Company
                              pursuant  to the Offer (less Odd Lot Shares
                              purchased)  to  the  total number of Shares
                              validly  tendered by all  stockholders  and
                              not  withdrawn   (less   Odd   Lot   Shares
                              purchased).  This ratio will be applied  to
                              all   Shares   validly   tendered  by  each
                              stockholder (other than Odd  Lot owners) to
                              determine the number of Shares that will be
                              purchased from each stockholder pursuant to
                              the   Offer.    Preliminary   results    of
                              proration will be announced by mail to each
                              stockholder   as  promptly  as  practicable
                              after the Expiration Date.

Odd Lot Owners                There  will  be  no   proration  of  Shares
                              validly tendered and not  withdrawn  by any
                              stockholder beneficially owning ninety-nine
                              or fewer Shares as of the close of business
                              on   November   24,  1997  and  as  of  the
                              Expiration  Date,   who  tenders  all  such
                              Shares and completes the box captioned "Odd
                              Lots" on the Letter of Transmittal.

Withdrawal Rights             Tendered  Shares may be  withdrawn  at  any
                              time until the Expiration Date of the Offer
                              and,  unless  previously  purchased,  after
                              12:00 Midnight,  Rockville,  Maryland time,
                              Monday, January 26, 1998.  See Section 4.

Price of Shares               $10.10 per Share.  Legg Mason  Wood  Walker
                              Incorporated  ("Legg Mason"), the Company's
                              independent appraisers  for the fiscal year
                              ending  December  31, 1997,  determined  on
                              September 10, 1997  that  the  fair  market
                              value of minority holdings of the Company's
                              Common Stock falls in a range of $8.60  per
                              Share  to $11.60 per Share with an expected
                              value of  $10.10  per  Share as of June 30,
                              1997 (after giving effect  to  the  sale of
                              the  Space  Business  to  Orbital  Sciences
                              Corporation).  In connection with the  ESOP
                              Purchase,  Legg Mason also gave its opinion
                              dated November  20,  1997 to the Trustee of
                              the Company's Employee Stock Ownership Plan
                              that the expected value is $10.10 per Share
                              as of September 30, 1997.

Brokerage Commissions         Not  payable by stockholders.  The  Company
                              will pay  to  Capitol Securities Management
                              Incorporated ("Capitol")  a  fee  of $5,000
                              plus brokerage commissions of 1.5%  of  the
                              total   purchase   price   of   all  Shares
                              purchased by the Company in connection with
                              the Offer and reimburse Capitol for certain
                              out-of-pocket  expenses.  Capitol  provides
                              its services as  a broker/dealer for all of
                              the   Company's   transactions    in    its
                              securities.

Stock Transfer Tax            None,  except  as provided in Instruction 5
                              of the Letter of Transmittal.

Payment Date                  As  promptly  as  practicable   after   the
                              Expiration Date of the Offer.

Further Information           Any  questions,  requests for assistance or
                              requests  for  additional  copies  of  this
                              Offer   to   Purchase,    the   Letter   of
                              Transmittal or other tender offer materials
                              may  be directed to the Information  Agent,
                              Capitol Securities Management Incorporated,
                              8301 Greensboro  Drive,  Suite 150, McLean,
                              Virginia  22102, tel. (800) 878-2010.
<PAGE>
To the Holders of Common Stock of
CTA INCORPORATED:


                              INTRODUCTION

     CTA  INCORPORATED,  a Colorado corporation (the "Company"),  invites
its stockholders to tender Shares of its Common Stock, par value $.01 per
Share (the "Shares"), at $10.10  per Share (the "Purchase Price"), net to
the seller in cash, upon the terms  and  subject  to  the  conditions set
forth  herein  and  in the related Letter of Transmittal (which  together
constitute the "Offer").

     NEITHER THE COMPANY  NOR ANY OF ITS DIRECTORS, OFFICERS OR EMPLOYEES
MAKES ANY RECOMMENDATION TO  ANY  STOCKHOLDER  AS TO WHETHER TO TENDER OR
REFRAIN FROM TENDERING SHARES.  EACH STOCKHOLDER MUST MAKE HIS OR HER OWN
DECISION AS TO WHETHER TO TENDER SHARES AND, IF  SO,  HOW  MANY SHARES TO
TENDER.

     Each stockholder who has properly tendered and not withdrawn  Shares
will receive $10.10 per Share, net to the seller in cash, with respect to
all Shares purchased, upon the terms and subject to the conditions of the
Offer,  including  the  provisions  relating  to  proration and "odd lot"
tenders described below.  The Purchase Price will be paid in cash, net to
the seller, with respect to all Shares purchased.   Shares  tendered  and
not  purchased  because  of  proration or invalid tender will be returned
promptly to the tendering stockholders.

     THE OFFER IS NOT CONDITIONED UPON ANY MINIMUM NUMBER OF SHARES BEING
TENDERED.  THE OFFER IS, HOWEVER,  SUBJECT  TO  CERTAIN OTHER CONDITIONS.
SEE SECTION 6.

     Tendering  stockholders  will  not  be obligated  to  pay  brokerage
commissions, solicitation fees or, subject to Instruction 5 of the Letter
of Transmittal, stock transfer taxes on the  sale  of their Shares to the
Company  pursuant  to  the  Offer.   The  Company  will  pay  to  Capitol
Securities  Management  Incorporated  ("Capitol")  a  fee of $5,000  plus
brokerage commissions of 1.5% of the total purchase price  of  all Shares
purchased  by  the  Company  in  connection  with the Offer and reimburse
Capitol for certain out-of-pocket expenses.  See  Section  16.   HOWEVER,
ANY  TENDERING  STOCKHOLDER  WHO FAILS TO COMPLY WITH THE PROCEDURES  SET
FORTH IN THE LETTER OF TRANSMITTAL  MAY  BE SUBJECT TO A REQUIRED FEDERAL
INCOME TAX BACKUP WITHHOLDING OR OTHER WITHHOLDING  ON THE GROSS PAYMENTS
PAYABLE TO SUCH STOCKHOLDER PURSUANT TO THE OFFER.  SEE SECTION 3.

     As  more  fully  discussed  in Section 8, on August  15,  1997,  the
Company completed the sale of its  Space  and  Telecommunications Systems
business and the Mobile Information and Communications  Services business
(collectively,  the  "Space  Business")  to Orbital Sciences  Corporation
("Orbital").   The  Company  received  approximately   $47.0  million  of
proceeds from the sale of the Space Business and decided  to  effect  the
Offer  to  allow  stockholders  to  benefit  from such sale.  The Company
intends  to  use  approximately  $2.0 million (excluding  expenses)  from
amounts drawn under its revolving  line  of credit to conduct this Offer.
See Section 9.

     Dr. C.E. Velez, President, Chief Executive  Officer  and Chairman of
the  Board,  Mr.  B.A. Claussen and Mr. Terry J. Piddington, collectively
own 2,896,858 Shares  constituting 63.7% of the outstanding Common Stock.
Dr. Velez and Messrs. Claussen  and  Piddington have informed the Company
that they will not tender any Shares in the Offer.  On November 21, 1997,
Dr. Velez and Messrs. Claussen and Piddington  sold  228,960, 39,979, and
24,000  Shares,  respectively,  to  the  CTA INCORPORATED Employee  Stock
Ownership Plan (the "ESOP") for a purchase  price of $10.10 per Share(the
"ESOP Purchase").

     The  Trustees  of  the ESOP and the Company's  Defined  Contribution
401(k) Retirement Plan (the "401(k) Plan") have informed the Company that
they will not tender any Shares in the Offer.  After giving effect to the
ESOP Purchase, the Trustees  of the ESOP and 401(k) Plan collectively own
877,659 Shares constituting 19.3% of the outstanding Common Stock.

     As of November 24, 1997,  the  Company  had  issued  and outstanding
4,551,088 Shares.  As of November 24, 1997, there were approximately  348
holders  of  record  of  Shares.  As the Company has been informed by the
Trustees of the ESOP and 401(k)  Plan  and Dr. Velez and Messrs. Claussen
and Piddington that they will not tender  any  Shares  in  the Offer, the
proration   factor   (if  every  stockholder  other  than  the  foregoing
stockholders, tenders  all  of the Shares he or she owns in the Offer) is
anticipated to be approximately  25.7542%.  The Company currently intends
to hold the Shares purchased pursuant to the Offer as treasury stock.

     The  Shares  are  not  listed, traded  or  quoted  on  any  national
securities exchange or other  market.  Legg Mason determined on September
10, 1997 that the fair market value of minority holdings of the Company's
Common Stock falls in a range of  $8.60  per  Share  to $11.60 per Share,
with an expected value of $10.10 per Share (the "Appraisal"),  as of June
30,  1997  (after  giving  effect  to  the sale of the Space Business  to
Orbital).  In connection with the ESOP Purchase, Legg Mason also gave its
opinion dated November 20, 1997 to the Trustee of the Company's ESOP that
the expected value is $10.10 per Share as  of  September  30,  1997.  See
Section 7.

                                THE OFFER

     1.   NUMBER OF SHARES; PRORATION.

          Upon  the terms and subject to the conditions described  herein
and in the Letter of Transmittal, the Company will purchase up to 200,000
Shares that are validly  tendered  prior  to the Expiration Date (and not
properly withdrawn in accordance with Section  4) at $10.10 per Share net
to the Seller in cash.  The later of 12:00 Midnight,  Rockville, Maryland
time,  on Wednesday, December 31, 1997, or the latest time  and  date  to
which the  Offer  is  extended,  is referred to herein as the "Expiration
Date."  If the Offer is oversubscribed  as  described  below, only Shares
validly tendered and not withdrawn prior to the Expiration  Date  will be
eligible for proration.

     The  Offer  is not conditioned on any minimum number of Shares being
tendered, but is subject to certain other conditions.  See Section 6.

     All Shares not purchased pursuant to the Offer, including Shares not
purchased because  of  proration,  will  be  returned  to  the  tendering
stockholders   at  the  Company's  expense  as  promptly  as  practicable
following the Expiration Date.

     Upon the terms  and  subject  to  the  conditions  of  the Offer, if
200,000  or  fewer  Shares  have  been validly tendered and not withdrawn
prior to the Expiration Date, the Company  will purchase all such Shares.
Upon the terms and subject to the conditions  of  the Offer, if more than
200,000 Shares have been validly tendered and not withdrawn  prior to the
Expiration Date, the Company will purchase Shares in the following  order
of priority:

          (a)  first, all Shares validly tendered and not withdrawn prior
to the Expiration Date by any stockholder (an "Odd Lot Owner") who was as
of the close of business on November 24, 1997, and will continue to be at
the  Expiration  Date,  the record or beneficial owner of an aggregate of
ninety-nine or fewer Shares  ("Odd  Lot  Shares"), all of which are being
tendered (partial tenders will not qualify  for this preference), and who
completes the box captioned "Odd Lots" on the Letter of Transmittal; and

          (b)  then, after purchase of all of  the  foregoing Shares, all
Shares validly tendered and not withdrawn prior to the Expiration Date on
a  pro  rata  basis if necessary (with appropriate adjustments  to  avoid
purchases of fractional Shares).

     If proration  of  tendered  Shares is required, the Company does not
expect that it will be able to announce  the final proration factor or to
commence payment for any Shares purchased  pursuant  to  the  Offer until
approximately  seven  business days after the Expiration Date because  of
the difficulty in determining  the  number of Shares validly tendered and
as a result of the "odd lot" procedures  described in Section 2 (the "Odd
Lot  Procedure").   Proration  of  Shares,  other  than  Shares  tendered
pursuant to the Odd Lot Procedure, will be based  on  the  ratio  of  the
number  of  Shares  to  be purchased by the Company pursuant to the Offer
(less Odd Lot Shares purchased)  to  the  total  number of Shares validly
tendered  by  all  stockholders and not withdrawn (less  Odd  Lot  Shares
purchased).  This ratio  will  be  applied to all Shares tendered by each
stockholder (other than an Odd Lot Owner)  to  determine  the  number  of
Shares  that  will  be  purchased  from  such stockholder pursuant to the
Offer.  Preliminary results of proration will  be  announced  by  mail to
each  stockholder  as  promptly as practicable after the Expiration Date.
Holders  of  Shares may obtain  such  preliminary  information  from  the
Information Agent.

     As described  in  Section  14, the number of Shares that the Company
will purchase from a stockholder  may  affect  the  United States federal
income tax consequences to the stockholder of such purchase and therefore
may be relevant to a stockholder's decision whether to tender Shares, and
if  tendering,  how  many  Shares to tender.  The Letter  of  Transmittal
affords each tendering stockholder  tendering  Shares in certificate form
the  opportunity  to  designate  the order of priority  in  which  Shares
tendered are to be purchased in the  event  of  proration, which may also
affect the tax consequences to a stockholder.

     THE COMPANY EXPRESSLY RESERVES THE RIGHT, IN ITS SOLE DISCRETION, TO
PURCHASE  ADDITIONAL  SHARES PURSUANT TO THE OFFER  OR  TO  DECREASE  THE
NUMBER OF SHARES BEING  SOUGHT PURSUANT TO THE OFFER.  If (i) the Company
increases or decreases the  price  to  be  paid for Shares, increases the
number of Shares being sought and such increase  in  the number of Shares
being  sought  exceeds  2%  of the outstanding Shares, or  decreases  the
number of Shares being sought  and  (ii) the Offer is scheduled to expire
at any time earlier than the expiration  of  a period ending on the tenth
business day from, and including, the date that  notice  of such increase
or decrease is first published, sent or given in the manner  described in
Section  15,  the  Offer  will  be  extended until the expiration of  ten
business days from the date of publication of such notice.

     The  Company  also  expressly  reserves   the  right,  in  its  sole
discretion, at any time or from time to time, to  amend  the Offer in any
respect.  Any extension, delay in payment, termination or  amendment will
be followed as promptly as practicable by public announcement thereof.

     For purposes of the Offer, a "business day" means any day other than
a  Saturday,  Sunday  or federal holiday and consists of the time  period
from 12:01 a.m. through 12:00 midnight, Rockville, Maryland time.

     Copies of this Offer  to  Purchase and the Letter of Transmittal are
being mailed to record holders of Shares.

     2.   TENDERS BY HOLDERS OF NINETY-NINE OR FEWER SHARES.

          All Shares validly tendered  and  not  withdrawn on or prior to
the Expiration Date by or on behalf of any stockholder who was, as of the
close of business on November 24, 1997, and will continue  to  be  at the
Expiration  Date,  the  record  or  beneficial  owner  of an aggregate of
ninety-nine  or  fewer  Shares  all of which are being tendered  will  be
accepted without proration, provided  that  the stockholder completes the
box captioned "Odd Lots" on the Letter of Transmittal.   See  Section  1.
Partial  tenders  will  not  qualify  for  this preference, and it is not
available to beneficial holders of more than  ninety-nine Shares, even if
such holders have separate stock certificates for  ninety-nine  or  fewer
Shares.

     As  of  November  24,  1997, there were approximately 348 holders of
record of Shares.  Approximately  16%  of the holders of record of Shares
held individually ninety-nine or fewer Shares  and  held in the aggregate
approximately 1,913 Shares.  Any Odd Lot Owner wishing  to  tender all of
his or her Shares free of proration must complete the box captioned  "Odd
Lots" on the Letter of Transmittal.

     3.   PROCEDURE FOR TENDERING SHARES.

          PROPER TENDER OF SHARES.  To tender Shares validly pursuant  to
the Offer the tendering stockholder must deliver a properly completed and
duly  executed  Letter  of Transmittal or photocopy thereof and any other
documents required by the  Letter  of Transmittal prior to the Expiration
Date to Capitol at its address set forth  in  the last page of this Offer
to  Purchase  (by  mail,  by  hand  or by facsimile).   In  the  event  a
stockholder holds Shares in certificate  form,  such  stockholder  should
deliver   to   Capitol   the   Letter   of  Transmittal  along  with  the
certificate(s) for such Shares.

     The method of delivery of Shares and all other required documents is
at the election and risk of the tendering  stockholder  and delivery will
be deemed made only when actually received by Capitol.  If delivery is by
mail, registered mail with return receipt requested, properly insured, is
recommended.  In all cases, sufficient time should be allowed  to  assure
timely delivery.

     FEDERAL  INCOME  TAX  WITHHOLDING.  To prevent backup federal income
tax withholding equal to 31%  of  the  gross payments payable pursuant to
the Offer, each stockholder who does not otherwise establish an exemption
from backup withholding must notify the  Company  of  such  stockholder's
correct taxpayer identification number (or certify that such  taxpayer is
awaiting  a  taxpayer  identification  number) and provide certain  other
information by completing, under penalties  of  perjury,  the  Substitute
Form W-9 included in the Letter of Transmittal.

     For  a  discussion  of  certain  United  States  federal  income tax
consequences generally applicable to tendering stockholders, see  Section
14.

     DETERMINATION  OF VALIDITY.  All questions as to the Purchase Price,
the form of documents  and  the  validity, eligibility (including time of
receipt) and acceptance for payment  of  any  tender  of  Shares  will be
determined  by the Company, in its sole discretion, and its determination
shall be final  and  binding  on  all  parties.  The Company reserves the
absolute right to reject any or all tenders  of Shares that it determines
are not in proper form or the acceptance for payment  of which or payment
for which may, in the opinion of the Company's counsel, be unlawful.  The
Company also reserves the absolute right to waive any of  the  Conditions
of  the  Offer  and  any  defect  or  irregularity  in  any tender of any
particular Shares.  No tender of Shares will be deemed validly made until
all  defaults or irregularities have been cured or waived.   Neither  the
Company,  Capitol,  nor  any other person is or will be under any duty to
give notice of any defects  or  irregularities in tenders, and neither of
them will incur any liability for failure to give any such notice.

     RULE 14E-4.  It is a violation  of  Rule 14e-4 promulgated under the
Securities Exchange Act of 1934, as amended  (the  "Exchange Act"), for a
person,  directly  or indirectly, to tender Shares for  his  or  her  own
account unless, at the  time  of  tender  and at the end of the proration
period or period during which Shares are accepted  by  lot (including any
extensions thereof), the person so tendering (i) has a net  long position
equal  to  or  greater than the amount tendered (x) in Shares or  (y)  in
other  securities   immediately   convertible  into,  or  exercisable  or
exchangeable for, Shares and, upon  the  acceptance  of such tender, will
acquire  such Shares for tender by conversion, exercise  or  exchange  of
such other  securities and (ii) will cause such Shares to be delivered in
accordance with  the  terms  of the Offer.  Rule 14e-4 provides a similar
restriction applicable to the  tender  or guarantee of a tender on behalf
of another person.  The tender of Shares  pursuant  to  any  one  of  the
procedures  described  above  will constitute the tendering stockholder's
representation and warranty that  (i)  such  stockholder  has  a net long
position  in  the Shares being tendered within the meaning of Rule  14e-4
promulgated under  the  Exchange  Act, and (ii) the tender of such Shares
complies with Rule 14e-4.  The Company's acceptance for payment of Shares
tendered  pursuant  to  the Offer will  constitute  a  binding  agreement
between the tendering stockholder  and  the  Company  upon  the terms and
subject to the conditions of the Offer.

     4.   WITHDRAWAL RIGHTS.

          Tenders  of Shares made pursuant to the Offer may be  withdrawn
at any time prior to  the  Expiration Date.  Thereafter, such tenders are
irrevocable, except that they  may  be  withdrawn  after  12:00 Midnight,
Rockville,  Maryland  time,  Monday,  January 26, 1998 unless theretofore
accepted  for payment as provided in this  Offer  to  Purchase.   If  the
Company extends  the period of time during which the Offer is open, or is
delayed in accepting  for  payment  or paying for Shares, or is unable to
accept  for payment or pay for Shares  pursuant  to  the  Offer  for  any
reason, then,  without prejudice to the Company's rights under the Offer,
Capitol may, on  behalf  of  the Company, retain all Shares tendered, and
such Shares may not be withdrawn  except  as  otherwise  provided in this
Section  4,  subject  to Rule 13e-4(f)(5) under the Exchange  Act,  which
provides that the issuer  making  the  tender  offer shall either pay the
consideration offered, or return the tendered securities,  promptly after
the termination or withdrawal of the tender offer.

     To  be  effective,  a  written  or facsimile transmission notice  of
withdrawal signed by the tendering stockholder must be timely received by
Capitol  at  its  address  set forth in the  Summary  of  this  Offer  to
Purchase.  Any notice of withdrawal  must  specify the name of the person
who tendered the Shares to be withdrawn and  the  number  of Shares to be
withdrawn.  In addition, such notice must specify, the name and number of
the  account  at  Capitol  to  be  credited  with  the  withdrawn Shares.
Withdrawals may not be rescinded, and Shares withdrawn will thereafter be
deemed  not  validly  tendered  for  purposes  of  the  Offer.   However,
withdrawn  Shares  may  be  re-tendered by again following the procedures
described in Section 3 at any time prior to the Expiration Date.

     All  questions  as to the  form  and  validity  (including  time  of
receipt) of any notice  of  withdrawal will be determined by the Company,
in its sole discretion, which  determination  shall be final and binding.
Neither the Company, Capitol, nor any other person will be under any duty
to  give  notification of any defect or irregularity  in  any  notice  of
withdrawal   or  incur  any  liability  for  failure  to  give  any  such
notification.

     5.   ACCEPTANCE FOR PAYMENT OF SHARES AND PAYMENT
          OF PURCHASE PRICE.

          Upon  the terms and subject to the conditions of the Offer, and
as promptly as practicable  after  the  Expiration Date, the Company will
(subject to the proration provisions of the Offer) accept for payment and
pay  for Shares validly tendered up to 200,000  Shares.   In  all  cases,
payment  for  Shares  accepted  for payment pursuant to the Offer will be
made only after timely receipt by  Capitol  of  a confirmation of a book-
entry transfer of such Shares into the Company's  account  at  Capitol, a
properly  completed  and  duly executed Letter of Transmittal or manually
signed photocopy thereof and  any other required documents (including, if
applicable, certificates for Shares).

     For purposes of the Offer,  the  Company  will  be  deemed  to  have
accepted  for  payment  (and  thereby  purchased),  subject to proration,
Shares that are validly tendered and not withdrawn as,  if  and  when  it
gives  oral  or written notice to Capitol of the Company's acceptance for
payment of such  Shares.   The  Company  will  pay for Shares that it has
purchased pursuant to the Offer by delivering the Purchase Price therefor
to Capitol.  Capitol will act as agent for tendering stockholders for the
purpose of receiving payment from the Company and transmitting payment to
the  tendering stockholders (by check mailed directly  to  the  tendering
stockholders)  as  promptly  as practicable.  Under no circumstances will
interest  be  paid  on amounts to  be  paid  to  tendering  stockholders,
regardless of any delay in making such payment.

     Certificates for  all  Shares  not  purchased  will  be  returned as
promptly  as practicable without expense to the tendering stockholder  or
Shares will be credited to the tendering stockholder's account maintained
with Capitol by book-entry transfer.

     Payment  for  Shares  may  be  delayed in the event of difficulty in
determining the number of Shares properly  tendered  or  if  proration is
required.   See  Section  1.   In addition, if certain events occur,  the
Company may not be obligated to  purchase  Shares  pursuant to the Offer.
See Section 6.

     The  Company will pay or cause to be paid any stock  transfer  taxes
with respect to the sale and transfer of any Shares to it pursuant to the
Offer.  If,  however,  payment of the Purchase Price is to be made to, or
Shares not tendered or not purchased are to be registered in the name of,
any person other than the  registered  holder,  or if tendered Shares are
registered in the name of any person other than the  person  signing  the
Letter  of  Transmittal,  the amount of any stock transfer taxes (whether
imposed on the registered holder, such other person or otherwise) payable
on account of the transfer  to  such  person  will  be  deducted from the
Purchase Price unless satisfactory evidence of the payment of such taxes,
or exemption therefrom, is submitted.  See Instruction 5 of the Letter of
Transmittal.

     6.   CERTAIN CONDITIONS OF THE OFFER.

          Notwithstanding any other provisions of the Offer,  the Company
shall not be required to accept for payment or, subject to the provisions
of the Offer, to pay for any Shares not theretofore accepted for  payment
or  paid  for, and may terminate or amend the Offer, if at any time prior
to the Expiration  Date  any  of the following events shall have occurred
(or shall have been determined  by  the  Company  in its sole judgment to
have  occurred)  regardless  of  the  circumstances giving  rise  thereto
(including any action or omission to act by the Company):

          (a)  there shall have been threatened,  instituted  or  pending
any action or proceeding by any government or governmental, regulatory or
administrative  agency  or  authority  or  tribunal  or any other person,
domestic or foreign, or before any court, authority, agency  or  tribunal
or  any  other  person,  domestic  or  foreign, or any judgment, order or
injunction  entered, enforced or deemed applicable  by  any  such  court,
authority, agency,  tribunal  or  other  person,  that (i) challenges the
acquisition of Shares pursuant to the Offer or otherwise  in  any  manner
relates  to  or  affects  the  Offer, or (ii) in the sole judgment of the
Company, would or might materially  and  adversely  affect  the business,
condition  (financial or other), income, operations or prospects  of  the
Company or any  of its subsidiaries or otherwise materially impair in any
way the contemplated future conduct of the business of the Company or any
of its subsidiaries or materially impair the contemplated benefits of the
Offer to the Company;

          (b)  there  shall  have  been any action threatened, pending or
taken, or approval withheld, withdrawn or abrogated or any statute, rule,
regulation, judgment, order or injunction  threatened,  proposed, sought,
promulgated,  enacted,  entered,  amended,  enforced  or  deemed   to  be
applicable to the Offer, or to the Company or any of its subsidiaries, by
any  legislative body, court, authority, agency or tribunal, domestic  or
foreign,  which,  in the Company's sole judgment, would or might directly
or indirectly (i) make  the  acceptance  for  payment of, or payment for,
some  or  all  of the Shares illegal or otherwise  restrict  or  prohibit
consummation of  the  Offer,  (ii)  delay  or restrict the ability of the
Company, or render the Company unable, to accept  for  payment or pay for
some or all of the Shares, or (iii) materially and adversely  affect  the
business, condition (financial or other), income, operations or prospects
of  the Company or any of its subsidiaries or otherwise materially impair
in any way the contemplated future conduct of the business of the Company
or any of its subsidiaries or materially impair the contemplated benefits
of the Offer to the Company;

          (c)  it shall have been publicly disclosed or the Company shall
have  learned  that  (i) any new person or "group" (within the meaning of
Section 13(d)(3) of the Exchange Act) has acquired or proposes to acquire
beneficial ownership of  more  than  5% of the outstanding Shares whether
through the acquisition of stock, the  formation of a group, the grant of
any option or right, or otherwise, (ii)  any such person or group that on
or prior to November 24, 1997, has beneficial  ownership  of more than 5%
of the outstanding Shares thereafter shall have acquired or shall propose
to acquire whether through the acquisition of stock, the formation  of  a
group,  the  grant  of  any  option  or  right,  or otherwise, beneficial
ownership of additional Shares representing 2% or more of the outstanding
Shares,  (iii)  any new group shall have been formed  which  beneficially
owns more than 5%  of  the outstanding Shares, or (iv) any person, entity
or group shall have filed  a Notification and Report Form under the Hart-
Scott-Rodino  Antitrust  Improvements  Act  of  1976  or  made  a  public
announcement reflecting an  intent  to  acquire the Company or any of its
subsidiaries or any of their respective assets or securities;

          (d)  there shall have occurred  (i)  any  general suspension of
trading  in,  or  limitation  on prices for, securities on  any  national
securities  exchange  or  in  the  over-the-counter   market,   (ii)  any
significant decline in the price of the Shares or in the general level of
market prices of equity securities in the United States or abroad,  (iii)
any  change  in  the  general  political,  market,  economic or financial
condition  in  the United States or abroad which, in the  Company's  sole
judgment, would  or might have a material adverse effect on the business,
condition (financial  or  other),  income, operations or prospects of the
Company or any of its subsidiaries or  on the trading in the Shares, (iv)
the declaration of a banking moratorium  or any suspension of payments in
respect of banks in the United States or any  limitation on, or any event
which,  in the Company's sole judgment, might affect,  the  extension  of
credit by lending institutions in the United States, (v) the commencement
of a war,  armed  hostilities  or  other international or national crisis
directly or indirectly involving the United States or (vi) in the case of
any of the foregoing existing at the  time  of  the  commencement  of the
Offer,  in  the  Company's  sole  judgment,  a  material  acceleration or
worsening thereof;

          (e)  a tender or exchange offer with respect to some  or all of
the  Shares  (other  than  the  Offer), or a merger, acquisition or other
business combination proposal for  the  Company  or any subsidiary, shall
have been proposed, announced or made by a person other than the Company;
or

          (f)  there shall have occurred any event  or events that in the
Company's  sole judgment would or might result in an actual  or  possible
change  in  the   business,   condition  (financial  or  other),  income,
operations or prospects of the  Company  or  any  of  its subsidiaries or
otherwise materially impair in any way the contemplated future conduct of
the  business  of  the Company or any of its subsidiaries  or  materially
impair the contemplated benefits of the Offer to the Company;

and, in the sole judgment  of  the  Company, such event or events make it
undesirable  or  inadvisable to proceed  with  the  Offer  or  with  such
acceptance for payment or payment.

     Any of the foregoing  conditions  may  be  waived by the Company, in
whole  or  in  part,  at  any  time  and from time to time  in  its  sole
discretion.  The failure by the Company  at  any  time to exercise any of
the foregoing rights shall not be deemed a waiver of  any  such right and
each such right shall be deemed an ongoing right which may be asserted at
any  time  and  from  time  to  time.   Any  determination by the Company
concerning the events described above will be  final  and  binding on all
parties.

     7.   PRICE RANGE OF SHARES; DIVIDENDS.

          The  Shares  are  not listed, traded or quoted on any  national
securities  exchange  or  other   market.    Legg  Mason,  the  Company's
independent appraiser, has conducted appraisals  of  the Company's Shares
since 1986.  Legg Mason determined on September 10, 1997  that  the  fair
market value of minority holdings of the Company's Common Stock falls  in
a range of $8.60 per Share to $11.60 per Share, with an expected value of
$10.10 per Share, as of June 30, 1997 (after giving effect to the sale of
the  Space  Business  to Orbital).  In connection with the ESOP Purchase,
Legg Mason also gave its opinion dated November 20, 1997 to the ESOP that
the expected value is $10.10 per Share as of September 30, 1997.

     Information on the Company's market for its Common Stock and related
shareholder matters is  included  under  the caption "Item 5.  Market for
Registrant's  Common  Equity  and  Related Stockholder  Matters"  of  the
Company's Annual Report on Form 10-K  for  the fiscal year ended December
31, 1996 and is incorporated herein by reference.

     It is the current policy of the Company  to  retain  all earnings to
provide  funds for the Company's growth.  Therefore, the Company  has  no
current intention  of  paying  cash  dividends  on the Common Stock.  The
Company  has not made any distributions to its shareholders  since  1988.
The Company  is  prohibited  from  paying dividends under its bank credit
agreement.  The agreement expires on September 30, 2000.

     8.   BACKGROUND AND PURPOSE OF THE OFFER.

          On August 15, 1997, the Company  consummated  the  sale  of its
Space  Business  to  Orbital.   The  Company received approximately $47.0
million of proceeds from the sale of the  Space  Business  and decided to
effect the Offer to allow stockholders to benefit from such sale.

     The Board of Directors decided to proceed with the Offer because (i)
it would provide participating stockholders with an opportunity to obtain
liquidity  with  respect to certain of their Shares in a tax advantageous
transaction; (ii)  it would give the Company a capital structure in which
the Company's average  after-tax  cost  of  capital  is reduced; (iii) it
should permit each Share outstanding after the Offer to  participate in a
greater percentage of any earnings of the Company and (iv)  to the extent
that  the  Offer results in a reduction in the number of stockholders  of
record,  it would  reduce  the  costs  to  the  Company  for  stockholder
services, including mailing and printing costs.

     The Board  of  Directors  believes  that  the  terms  of  the  Offer
including the Purchase Price of $10.10 per Share, is fair to unaffiliated
stockholders  of  the  Company,  including  those stockholders who tender
their  Shares  in  the Offer.  The Board of Directors  has  received  the
opinion of Legg Mason  dated  September  10,  1997,  that the fair market
value of minority holdings of the Company's Common Stock falls in a range
of $8.60 per Share to $11.60 per Share, with an expected  value of $10.10
per  Share  as of June 30, 1997 (after giving effect to the sale  of  the
Space Business  to  Orbital).  In connection with the ESOP Purchase, Legg
Mason also gave its opinion dated November 20, 1997 to the Trustee of the
ESOP that the expected  value  is  $10.10  per  Share as of September 30,
1997.   The  full  text of the Legg Mason written appraisal,  which  sets
forth the assumptions  made,  procedures followed, matters considered and
scope of review by Legg Mason in  rendering its appraisal is on file with
the Securities and Exchange Commission  as  an  Exhibit  to the Company's
Issuer Tender Offer Statement on Schedule 13E-4 filed in connection  with
the  Offer.   Based  on the foregoing and given that stockholders are not
obligated to tender any  Shares  pursuant  to  the  Offer,  the  Board of
Directors believes that the Offer is fair to the Company's stockholders.

     Legg Mason has been the Company's independent appraiser since  1986.
The  Company  has paid Legg Mason a fee of $25,000 in connection with the
delivery of the Appraisal.  No portion of the fee was contingent upon the
consummation of  the  Offer  or the conclusions reached in the Appraisal.
In addition, the Company has agreed  to  pay Legg Mason's reasonable out-
of-pocket  expenses  up  to $4,000 and to indemnify  Legg  Mason  against
certain liabilities directly  or  indirectly  in connection with, arising
out  of,  based  upon, or in any way related to, its  engagement  by  the
Company (including with respect to federal securities laws).

     The Company currently  intends to hold the Shares purchased pursuant
to the Offer as treasury stock.   Although  the  Company  has  no current
plans to reissue any of such Shares, they may be reissued in the future.

     Except  as disclosed in this Offer to Purchase, the Company  has  no
plans  or  proposals  which  relate  to  or  would  result  in:  (a)  the
acquisition by any person of additional securities of the Company, or the
disposition  of securities of the Company; (b) an extraordinary corporate
transaction, such  as  a  merger, reorganization or liquidation involving
the Company or any of its subsidiaries;  (c)  a  sale  or  transfer  of a
material  amount of assets of the Company or any of its subsidiaries; (d)
any change  in  the  present  Board  of  Directors  or  management of the
Company; (e) any material change in the present dividend  rate  or policy
or indebtedness or capitalization of the Company; (f) any material change
in the Company's corporate structure or business; (g) any change  in  the
Company's  certificate of incorporation or bylaws or any action which may
impede the acquisition  of  control  of the Company by any person; or (h)
the suspension of the Company's obligation  to  file  reports pursuant to
Section 15(d) of the Exchange Act.

     Statements contained in this Offer to Purchase, including statements
with respect to the future earnings prospects and growth  in earnings per
Share  are  not historical facts and are forward looking statements  made
pursuant  to  the  safe  harbor  provisions  of  the  Private  Securities
Litigation Reform  Act  of 1995.  Each of these items is dependent on the
earnings of the Company.   A  number  of  important  factors  could cause
actual results to differ materially from those expressed in any  forward-
looking statements made by or on behalf of the Company.  Some of the most
important factors which would impact the Company's earnings include,  but
are  not  limited to, the Company's higher leverage, the Company's higher
debt  service   requirements,   restrictions  under  the  Company's  debt
instruments,  the  concentrated  ownership  of  the  Company,  the  risks
associated with competition and technological  innovation by competitors,
general  economic  conditions  in  industries  that  use   the  Company's
products,   general   business   cycles,  political,  economic  or  other
disruptions in the Company's foreign markets, the Company's concentration
of customers, increases in interest  rates,  exchange  rate fluctuations,
departures of the Company's key personnel for any reason,  the uncovering
of any liability currently unknown to the Company, and new and  different
legal and regulatory requirements and governmental approvals.

     NEITHER  THE COMPANY NOR ANY OF ITS DIRECTORS, OFFICERS OR EMPLOYEES
MAKES ANY RECOMMENDATION  TO  ANY  STOCKHOLDER AS TO WHETHER TO TENDER OR
REFRAIN FROM TENDERING SHARES.  EACH STOCKHOLDER MUST MAKE HIS OR HER OWN
DECISION AS TO WHETHER TO TENDER SHARES  AND,  IF  SO, HOW MANY SHARES TO
TENDER.

     9.   SOURCE AND AMOUNT OF FUNDS.

          The  Company  estimates  that  its maximum cost  of  purchasing
200,000 Shares pursuant to the Offer (including  all  fees  and  expenses
relating  to  the Offer, but excluding interest on, and fees with respect
to, funds borrowed  to  finance such purchase of Shares) will approximate
$2.1 million.  The funds  to  pay  all such costs will be obtained from a
$15.0 million secured revolving line  of  credit  under  a  financing and
security  agreement  between  the  Company  and  First  Union  Commercial
Corporation  (the  "Lender")  dated  November  6,  1997  (the  "Financing
Agreement").   The  Financing  Agreement  provides  for  a  $15.0 million
secured  revolving  line of credit ($4.0 million sublimit for letters  of
credit) and a $5.0 million term loan.

     Amounts drawn under  the  Financing  Agreement  bear interest at the
rate of interest from time to time established and publicly  announced by
Lender as its prime rate (the "Prime Rate").

     In addition, the Company may, under certain circumstances,  elect to
have  specified amounts drawn under the Financing Agreement bear interest
at the  LIBOR  rate  (as  defined  in  the  Financing  Agreement) plus an
additional  LIBOR  rate  of  1.5%,  1.75%  or  2%,  depending on  certain
circumstances.   The  unused  line fee under the Financing  Agreement  is
currently .003% of the average  daily  unused commitment and is paid on a
quarterly basis.  Additionally, letter of credit fees of 1.5% or 1.75% of
the average daily balance of outstanding letters of credit are payable to
the Lender.  Interest payable on amounts  outstanding under the Financing
Agreement  is due and payable monthly beginning  November  30,  1997  and
continuing on  the last day of each month thereafter until maturity.  The
principal amount  outstanding  under  the  Financing Agreement is due and
payable in full on September 30, 2000.

     The  Financing Agreement is secured by the  Company's  assets.   The
Financing Agreement  contains  usual  and customary affirmative, negative
and financial covenants, including restrictions  and conditions regarding
capital  expenditures,  payment of dividends, asset  sales,  investments,
sales of stock, incurrence of additional indebtedness, and other matters.

     The Company expects  to  repay  borrowings  incurred  to finance the
purchases of Shares in the Offer out of the proceeds of public or private
offerings of securities, additional bank borrowings, internally generated
funds  or  other  financings, or a combination of the foregoing,  as  the
Company may deem appropriate  depending on business and market conditions
at the time.

     10.  TRANSACTIONS AND AGREEMENTS CONCERNING SHARES.

          Dr. Velez, President,  Chief  Executive Officer and Chairman of
the  Board,  and  Messrs.  Claussen  and  Piddington,   collectively  own
2,896,858  Shares of Common Stock, constituting 63.7% of the  outstanding
Common Stock.   Dr.  Velez  and  Messrs.  Claussen  and  Piddington  have
informed  the  Company that they will not tender any Shares in the Offer.
On November 21,  1997, Dr. Velez and Messrs. Claussen and Piddington sold
228,960, 39,979, and  24,000  Shares,  respectively  to  the  ESOP  for a
purchase price of $10.10 per Share.

     The  Trustees  of  the  ESOP  and  the 401(k) Plan have informed the
Company that they will not tender any Shares  in the Offer.  After giving
effect to the ESOP Purchase, the Trustees of the  ESOP  and  401(k)  Plan
collectively  own  877,659  Shares  constituting 19.3% of the outstanding
Common Stock.

     Except as set forth above, based upon the Company's records and upon
information  provided  to  the Company by  its  directors  and  executive
officers, (i) neither the Company nor, to the Company's knowledge, any of
its  associates,  subsidiaries,  directors,  executive  officers  or  any
associate of any such  director  or executive officer, or any director or
executive officer of its subsidiaries,  has  engaged  in any transactions
involving  the  Shares  during  the 40 business days preceding  the  date
hereof  and  (ii)  except for outstanding  options  to  purchase  Shares,
neither the Company nor, to the Company's knowledge, any of its directors
or officers is a party  to  any  contract,  arrangement, understanding or
relationship relating directly or indirectly  to the Offer with any other
person with respect to the Shares.

     Immediately  prior  to  the  ESOP  purchase,  (i)  Dr.  Velez  owned
2,550,000 Shares, representing 56% of the then outstanding  Shares,  (ii)
Mr.  Claussen  owned  399,720  Shares,  representing  8.8%  of  the  then
outstanding  Shares,  and  (iii)  Mr.  Piddington  owned  240,001  Shares
representing 5.3% of the then outstanding Shares.  After giving effect to
the ESOP Purchase and assuming the Company purchases 200,000 in the Offer
(i)  Dr.  Velez will own 2,321,040 Shares, representing 53.3% of the then
outstanding   Shares,   (ii)   Mr.  Claussen  will  own  359,817  Shares,
representing  8.3%  of  the  then  outstanding   Shares,  and  (iii)  Mr.
Piddington  will  own  216,001  Shares,  representing 5.0%  of  the  then
outstanding Shares.

     11.  FINANCIAL INFORMATION CONCERNING THE COMPANY.

              SUMMARY HISTORICAL AND PRO FORMA CONSOLIDATED
                          FINANCIAL INFORMATION
           (IN THOUSANDS, EXCEPT RATIOS AND PER SHARE AMOUNTS)

          Set forth below is certain summary  historical consolidated and
certain  pro  forma  financial  information  of  the   Company   and  its
subsidiaries.  The historical financial information (other than the ratio
of  earnings  to  fixed  charges)  has  been  derived  from  the  audited
consolidated financial statements included in the Company's Annual Report
on  Form 10-K for the fiscal year ended December 31, 1996 (the "Company's
1996  Annual  Report")  and  from  the  unaudited  condensed consolidated
financial statements included in the Company's Quarterly  Report  on Form
10-Q for the quarter ended September 30, 1997 (the "Company's 1997  Third
Quarter Report"), each of which is incorporated by reference herein,  and
other  information and data contained in the Company's 1996 Annual Report
and  the   Company's  1997  Third  Quarter  Report.   More  comprehensive
financial information  is  included  in  such  reports  and the financial
information  which follows is qualified in its entirety by  reference  to
such reports and  all  of  the  financial  statements  and  related notes
contained  therein,  copies  of which may be obtained as set forth  below
under the caption "Miscellaneous."   The  summary  pro forma consolidated
financial information is based on certain assumptions  and estimates, and
therefore  does  not purport to be indicative of the results  that  would
actually have been  obtained  had  the  transactions been completed as of
such dates or indicative of future results  of  operations  and financial
position.

<TABLE>
<CAPTION>
                         YEARS ENDED                 Nine Months Ended
                         DECEMBER 31,                  SEPTEMBER 30,
                    -------------------------   ---------------------------
                                     1996 Pro                      1997 Pro
                    1995      1996   FORMA(1)   1996       1997    FORMA(1)
<S>             <C>        <C>      <C>        <C>       <C>       <C>
INCOME STATEMENT 
Contract revenue $105,224   $96,246            $70,729   $69,650
Income(loss) from
   continuing ops   2,349       276                 (2)    1,497
Income(loss) from
  discontinued ops   (403)  (11,313)            (3,438)   (1,490)
Gain on disposal 
  of segment            0         0                  0     3,016
Net income (loss)   1,946   (11,037)            (3,440)    3,023
Earnings (loss) 
  per share         $0.41    ($2.49) ($2.60)    ($0.78)    $0.79    $0.67
Weighted average 
shares 
outstanding     4,709,268 4,437,543 4,237,543 4,397,973 4,684,184  4,484,184
Ratio of 
earnings to  
fixed charges      2.49:1        NM        NM        NM   1.76:1
</TABLE>

<TABLE>
<CAPTION>
                                                     SEPTEMBER 30, 1997
                           DECEMBER 31,          ----------------------------
                             1996                 ACTUAL         PRO FORMA(1)
<S>                         <C>                  <C>                  <C>
BALANCE SHEET DATA:
Working capital             $13,721              $15,227              $13,207
Total assets                 92,690               48,376               46,356
Total  assets, less 
excess of cost of assets     87,642               48,376               46,356
  acquired over book value
Short-term debt              28,335               13,106               15,126
Long-term debt               15,000                    0                    0
Stockholders' equity         17,793               20,729               18,709
Book value per share          $3.91                $4.56                $4.12
</TABLE>

Notes to Summary Historical and Pro Forma Consolidated Financial Information:
(1)    Gives effect to the purchase of 200,000 Shares of Common Stock at $10.10
       per share of Common Stock pursuant to the Offer.

     12.  EFFECTS OF THE OFFER ON THE MARKET FOR SHARES

          The  Company's  purchase  of Shares pursuant to the Offer will reduce
the number of Shares and potentially the number of holders of Shares.

     Stockholders who determine not to  tender  Shares  in  the  Offer or whose
Shares  are  not  purchased  in  the  Offer  will realize an increase in  their
percentage ownership interest in the common equity  of the Company and thus, in
the Company's assets and any future earnings of the Company.   Because  of  the
smaller number of Shares outstanding after consummation of the Offer, increases
or  decreases  in net earnings will result in proportionately greater increases
or decreases in earnings per Share.

     13.  REGULATORY APPROVALS.

          The Company  is  not  aware  of  any  approval or other action by any
government or governmental, administrative or regulatory  authority  or agency,
domestic  or  foreign, that would be required for the Company's acquisition  or
ownership of Shares  as  contemplated  by  the  Offer  or  of  any  license  or
regulatory  permit  that  appears  to be material to its business that might be
adversely affected by its acquisition  of  Shares as contemplated in the Offer,
except as may otherwise be required under federal  or  state  securities  laws.
Should  any  such  approval  or other action be required, the Company currently
contemplates that it will seek  such  approval  or  other  action.  The Company
cannot  predict  whether  it  may determine that it is required  to  delay  the
acceptance of, or payment for,  Shares  tendered  pursuant to the Offer pending
the  outcome  of  any  such matter.  There can be no assurance  that  any  such
approval or other action,  if  needed,  would  be obtained or would be obtained
without substantial conditions or that the failure  to obtain any such approval
or  other  action  might not result in adverse consequences  to  the  Company's
business.  The Company's  obligations under the Offer to accept for payment and
pay for Shares are subject to certain conditions.  See Section 6.

     14.  CERTAIN FEDERAL INCOME TAX CONSEQUENCES.

          The following summary  is a general discussion of certain of the U.S.
federal income tax consequences of  the  Offer.  This summary is based on laws,
regulations, rulings, and decisions now in  effect, all of which are subject to
change, possibly retroactively, and any such change could affect the continuing
validity  of  the  discussion.   No opinions of counsel  or  rulings  from  the
Internal Revenue Service (the "Service")  as to any of the matters discussed in
this summary have been requested or received.

     This summary does not discuss any aspects  of  state,  local,  foreign, or
other  tax  laws.   Certain  stockholders (including insurance companies,  tax-
exempt organizations, financial  institutions, broker dealers, and stockholders
who have acquired their Shares upon  the  exercise  of  options or otherwise as
compensation) may be subject to special rules not discussed below.  The summary
assumes that stockholders hold their Shares as a capital asset.

     EACH STOCKHOLDER IS URGED TO CONSULT AND RELY ON HIS OR HER TAX ADVISOR AS
TO THE PARTICULAR TAX CONSEQUENCES OF THE OFFER TO SUCH STOCKHOLDER,  INCLUDING
THE APPLICATION OF STATE, LOCAL AND FOREIGN TAX LAWS AND POSSIBLE TAX CHANGES.

     IN GENERAL.  A stockholder's exchange of Shares for cash pursuant  to  the
Offer  will  be a taxable transaction for federal income tax purposes under the
Internal Revenue  Code  of  1986,  as amended (the "Code").  Such exchange will
constitute a "redemption" within the  meaning of Section 317 of the Code, which
will result in the following federal income tax consequences.

     TREATMENT AS A SALE OR EXCHANGE.  If the redemption qualifies under any of
the provisions of Section 302(b) of the  Code,  as  more fully described below,
the cash received pursuant to the Offer will be treated  as a distribution from
the Company in part or full payment for the Shares exchanged.   Such  treatment
will  result  in a stockholder recognizing gain or loss equal to the difference
between (a) the  cash  received  by  the  stockholder pursuant to the Offer and
(b) the stockholder's tax basis in the Shares surrendered.  Assuming the Shares
are held as a capital asset, such recognized  gain or loss will be capital gain
or  loss.   In the case of individuals, if the Shares  were  held  longer  than
eighteen months,  any resulting gain will be subject to federal income tax at a
maximum rate of 20%,  and if the Shares were held between twelve months but not
more than eighteen months,  such capital gain will be subject to federal income
tax at a maximum rate of 28%.   Gain  from  the  sale  of Shares held less than
twelve months generally will be taxed at ordinary income rates.

     TREATMENT AS A DIVIDEND.  If none of the provisions  under  Section 302(b)
of  the Code is satisfied, a stockholder will be treated as having  received  a
dividend  taxable  as  ordinary  income in an amount equal to the cash received
pursuant to the Offer, to the extent  of  such  stockholder's pro rata share of
the Company's earnings and profits, as calculated  for  U.S. federal income tax
purposes.  The Company anticipates that its available earnings and profits will
be sufficient for all of the amounts distributed to be taxed as a dividend.  In
the  event  that  the  transaction is treated as a dividend distribution  to  a
stockholder for federal  income  tax  purposes, such stockholder's tax basis in
the  Shares  actually  redeemed  will  be  added  to  the  tax  basis  of  such
stockholder's remaining actually owned or constructively  owned  Shares  in the
Company.   No  assurance  can be given that any of the provisions under Section
302(b) will be satisfied as to any particular stockholder and thus no assurance
can be given that any particular  stockholder  will  not  be  treated as having
received a dividend taxable as ordinary income.

     CONSTRUCTIVE  OWNERSHIP  OF STOCK.  In determining whether the  provisions
under Section 302(b)(1), 302(b)(2),  or  302(b)(3)  of  the  Code, as described
below,  are  satisfied,  a stockholder must take into account not  only  Shares
actually owned by such stockholder  but  also  Shares  that  are constructively
owned  within  the  meaning of Section 318 of the Code.  Under Section  318,  a
stockholder may constructively  own  Shares  actually  owned, and in some cases
constructively owned, by certain related individuals and  certain  entities  in
which  the stockholder has an interest and Shares that such stockholder has the
right to  acquire  by  exercise  of  an  option or by conversion of convertible
securities.

     THE PROVISIONS OF SECTION 302(B).  Under  Section  302(b)  of  the Code, a
redemption  will be taxed as a sale or exchange, and not as a dividend,  if  it
(1)  is  "not  essentially   equivalent  to  a  dividend"  with  respect  to  a
stockholder;  (2)  is  "substantially   disproportionate"  with  respect  to  a
stockholder; (3) results in a "complete redemption"  of all of the Shares owned
by  a  stockholder;  or  (4)  is a redemption in "partial liquidation"  from  a
stockholder that is not a corporation.   Each stockholder should be aware that,
under  certain circumstances, sales or transfers  of  shares  contemporaneously
with exchanges  pursuant  to  the  Offer as part of an overall plan to reduce a
stockholder's interest in the Company  may be taken into account in determining
whether the tests under clauses (1), (2),  and  (3) above are satisfied.  Also,
subsequent purchases by the Company may be taken  into  account  in determining
whether  the  tests  under  clauses (1), (2), and (3) above are satisfied.   If
every stockholder, excluding Dr. Velez, Messrs. Claussen and Piddington and the
Trustees of the ESOP and the  401(k)  Plan, elects to tender the full amount of
their Shares available for tender, a tendering  stockholder should experience a
reduction  in  such  stockholder's  interest  in  the Company.   Under  certain
circumstances,  depending  on  whether  and  to  what  extent  other  tendering
stockholders tender their Shares, a stockholder who tenders  less  than  all of
its  Shares  could  experience  an increase in its interest in the Company.  In
such an event the stockholder will  be  treated  as  having received a dividend
taxable as ordinary income in an amount equal to the cash  received pursuant to
the Offer, to the extent of the stockholder's pro rata share  of  the Company's
earnings and profits, as calculated for federal income tax purposes.

     A description of each of the provisions of Section 302(b) is as follows:

     (1)  NOT ESSENTIALLY EQUIVALENT TO A DIVIDEND.  The receipt of  cash  by a
stockholder in exchange for Shares pursuant to the Offer will generally be "not
essentially  equivalent  to a dividend" within the meaning of Section 302(b)(1)
of the Code if the sale of  Shares  results  in a "meaningful reduction" of the
stockholder's interest in the Company.  Based  on  a  published Service ruling,
dividend  treatment  will  likely  not  apply  if,  taking  into   account  the
constructive  ownership  rules  set  forth in Section 318 of the Code, (a)  the
stockholder's relative stock interest  in  the  Company  is  minimal,  (b)  the
stockholder exercises no control over the Company's affairs and (c) there is  a
reduction in the stockholder's proportionate interest in the Company.

     (2)  A  SUBSTANTIALLY DISPROPORTIONATE REDEMPTION.  The receipt of cash by
a stockholder  will  be  "substantially  disproportionate" with respect to such
stockholder  within  the  meaning of Section  302(b)(2)  of  the  Code  if  the
percentage of the then outstanding  Shares actually and constructively owned by
the stockholder immediately following  the  exchange  of Shares pursuant to the
Offer  is  less  than  80 percent of the percentage of the  outstanding  Shares
actually and constructively  owned  by such stockholder immediately before such
exchange, provided that immediately after  the  exchange  such stockholder owns
actually and constructively less than 50 percent of the total voting power.

     (3)  A  COMPLETE  REDEMPTION  OF  INTEREST.   The  receipt of  cash  by  a
stockholder will result in a "complete redemption" of all  the  Shares owned by
the stockholder within the meaning of Section 302(b)(3) of the Code  if  either
(a)  all  the  Shares  actually and constructively owned by the stockholder are
sold pursuant to the Offer  or  (b)  all  the  Shares  actually  owned  by  the
stockholder  are  sold  pursuant  to the Offer, the only Shares the stockholder
constructively owns are actually owned  by  such  stockholder's family members,
and  the  stockholder  is  eligible  to  waive  and effectively  waives,  under
procedures described in Section 302(c), such constructive ownership.

     (4)  A  PARTIAL  LIQUIDATION.   The  receipt of  cash  by  a  noncorporate
stockholder pursuant to the Offer may qualify  as  a redemption under a plan of
"partial liquidation" under Section 302(b)(4) of the  Code  if the distribution
is "not essentially equivalent to a dividend (determined at the corporate level
rather  than  at  the  stockholder  level)"  and  certain other conditions  are
satisfied.   Under  the  Code,  all  distributions  under  a  plan  of  partial
liquidation must be made by the end of the taxable year  succeeding the taxable
year of the corporation in which such plan of partial liquidation  was adopted.
It  is  unclear  whether  the  distribution of cash pursuant to the Offer  will
qualify as distribution in partial liquidation.

     APPLICATION OF SECTION 302(B) TESTS.  Stockholders may qualify for sale or
exchange treatment if any of the  other  provisions  of  Section  302(b) of the
Code,  as  described  above,  are  applicable, taking into account the relevant
constructive ownership rules.  If none  of  the  Code  Section 302(b) tests are
satisfied, the redemption of Shares would be treated as  a dividend and taxable
as described above under "Treatment as a Dividend."  Holders are strongly urged
to consult their tax advisors in regard to the treatment of  the  redemption of
Shares in their particular situation.

     SPECIAL RULES FOR CORPORATE STOCKHOLDERS.  If the redemption of  Shares of
a corporate stockholder of the Company is either "not essentially equivalent to
a  dividend,"  a  "substantially  disproportionate"  redemption, or a "complete
termination  of interest," under the Code Section 302(b)  provisions  described
above, then such  stockholder receives sale or exchange treatment.  Because the
"partial liquidation"  provision  of  Section  302(b)(4)  is applicable only to
noncorporate  stockholders,  if  the  exchange  qualifies  only as  a  "partial
liquidation" or fails to qualify under any of the Section 302(b)  provisions as
a redemption, then a corporate stockholder is deemed to receive a dividend.

     Upon receipt of a dividend from the Company, a corporate stockholder  that
owns  less  than 20 percent of the Company is eligible for a dividends received
deduction equal  to  70  percent  of the amount of the distribution, subject to
applicable limitations, including those  related  to  "debt  financed portfolio
stock" under Section 246A of the Code and to the holding period requirements of
Section  246  of  the  Code.  In addition, any amount received by  a  corporate
stockholder that is treated  as  a  dividend  may  constitute an "extraordinary
dividend" subject to the provisions of Section 1059  of the Code (except as may
otherwise  be provided in Treasury Regulations yet to be  promulgated).   Under
Section 1059,  a corporate stockholder must reduce the tax basis of all of such
stockholder's Shares  (but  not  below  zero)  by the "nontaxed portion" of any
"extraordinary   dividend"   and,   if  such  nontaxed  portion   exceeds   the
stockholder's tax basis for the Shares, must treat any such excess as gain from
the  sale or exchange of such Shares in  the  year  the  payment  is  received.
Section  1059  will  apply  to  the  extent  that the redemption of Shares is a
redemption  in  partial  liquidation  for  United  States  federal  income  tax
purposes, as described above.

     BACKUP WITHHOLDING.  Certain noncorporate stockholders  may  be subject to
backup withholding at a rate of 31% on cash received pursuant to the redemption
of Shares.  Generally, backup withholding applies only when the taxpayer  fails
to  furnish  or  certify  a  proper  taxpayer identification number or when the
taxpayer is notified by the Service that  the  taxpayer  has  failed  to report
payments  of  interest  and  dividends properly.  Each noncorporate stockholder
should consult its own tax advisor  regarding  its  qualification for exemption
from  backup  withholding  and  the  procedure  for  obtaining  any  applicable
exemption.   For  a  discussion  of  certain  withholding tax  consequences  to
tendering stockholders, see Section 3.

     NON-U.S. HOLDERS.  The Company will withhold  United States federal income
tax at the rate of 30% from cash distributed to Non-U.S.  Holders  (as  defined
below) pursuant to the redemption of Shares, unless the Company determines that
a reduced rate of withholding is applicable pursuant to a tax treaty or that an
exemption  from  withholding  is  applicable  because  such cash is effectively
connected with the conduct of a trade or business in the  United  States.   For
this purpose, a "Non-U.S. Holder" is a beneficial owner of Shares other than  a
beneficial  owner  that  is  for  U.S.  federal  income  tax  purposes,  (i) an
individual  citizen  or  resident  of  the  United States, (ii) a U.S. domestic
corporation or (iii) otherwise subject to U.S.  federal  income  tax  on  a net
income  basis  in  respect of the Shares.  A Non-U.S. Holder may be eligible to
obtain a refund of tax  withheld if such stockholder meets one of the tests for
capital  gain or loss treatment  described  above,  or  is  otherwise  able  to
establish  that  no tax or a reduced amount of tax was due.  Backup withholding
will generally not apply to amounts subject to the 30-percent or treaty-reduced
rate of withholding.

     THE FEDERAL INCOME  TAX DISCUSSION SET FORTH ABOVE IS INCLUDED FOR GENERAL
INFORMATION ONLY.  EACH STOCKHOLDER  IS  URGED  TO  CONSULT  HIS OR HER OWN TAX
ADVISOR  TO  DETERMINE  THE  PARTICULAR  TAX  CONSEQUENCES  TO SUCH STOCKHOLDER
(INCLUDING THE APPLICABILITY AND EFFECT OF THE CONSTRUCTIVE OWNERSHIP RULES AND
FOREIGN, STATE AND LOCAL TAX LAWS AND POSSIBLE TAX LAW CHANGES)  OF THE SALE OF
SHARES PURSUANT TO THE OFFER.

     15.  EXTENSION OF TENDER PERIOD; TERMINATION; AMENDMENTS.

          The Company expressly reserves the right, in its sole discretion  and
at any time or from time to time, to extend the period of time during which the
Offer  is  open  by  making  a  public  announcement  thereof.  There can be no
assurance,  however, that the Company will exercise its  right  to  extend  the
Offer.  During  any  such extension, all Shares previously tendered will remain
subject to the Offer, except to the extent that such Shares may be withdrawn as
set forth in Section 4.   The Company also expressly reserves the right, in its
sole discretion, (i) to terminate  the  Offer  and  not  accept for payment any
Shares not theretofore accepted for payment by giving oral or written notice of
such  termination  to  Capitol  and  making a public announcement  thereof  or,
subject to Rule 13e-4(f)(5) under the  Exchange Act, which requires the Company
either  to pay the consideration offered  or  to  return  the  Shares  tendered
promptly  after the termination or withdrawal of the Offer, to postpone payment
for Shares,  in  each  case,  upon  the  occurrence  of  any  of the conditions
specified in Section 6 and (ii) at any time or from time to time,  to amend the
Offer  in  any  respect.   Amendments  to  the  Offer may be effected by public
announcement.  Without limiting the manner in which  the  Company may choose to
make  public  announcement of any termination or amendment, the  Company  shall
have no obligation (except as otherwise required by applicable law) to publish,
advertise or otherwise  communicate any such public announcement, other than by
making a release to the PR  Newswire,  except in the case of an announcement of
an extension of the Offer, in which case  the  Company shall have no obligation
to publish, advertise or otherwise communicate such  announcement other than by
issuing  a  notice  of  such  extension  by  press  release  or   other  public
announcement, which notice shall be issued no later than 9:00 a.m.,  Rockville,
Maryland  time,  on  the  next  business  day  after  the  previously scheduled
Expiration  Date.   Material  changes  to  information previously  provided  to
holders  of  the  Shares  in  this Offer or in documents  furnished  subsequent
thereto will be disseminated to  holders of Shares in compliance with Rule 13e-
4(e)(2) promulgated under the Exchange Act.

     If  the  Company  materially  changes  the  terms  of  the  Offer  or  the
information concerning the Offer, or  if  it waives a material condition of the
Offer, the Company will extend the Offer to  the  extent required by Rules 13e-
4(d)(2)  and  13e-4(e)(2) under the Exchange Act.  The  minimum  period  during
which the Offer must remain open following material changes in the terms of the
Offer or information  concerning  the  Offer  (other  than a change in price or
change  in  percentage  of  securities sought) will depend  on  the  facts  and
circumstances, including the relative materiality of such terms or information.
In a published release, the Commission  has  stated  that in its view, an Offer
should  remain  open for a minimum of five business days  from  the  date  that
notice of such a  material  change is first published, sent or given.  Pursuant
to Rule 13e-4(f)(1), the Offer  will  continue  or be extended for at least ten
business days from the time the Company publishes, sends or gives to holders of
Shares a notice that it will (a) increase or decrease the price it will pay for
Shares  or  (b)  increase  (except  for an increase not  exceeding  2%  of  the
outstanding Shares) or decrease the number of Shares it seeks.

     16.  FEES, EXPENSES AND OTHER ARRANGEMENTS.

          The Company has retained Capitol  as  Information Agent in connection
with  the  Offer.   The  Information Agent may contact  stockholders  by  mail,
telephone, facsimile transmission  and  personal  interviews.   Capitol has not
been retained to make solicitations or recommendations in connection  with  the
Offer.

     Certain directors, officers, or employees of the Company may, from time to
time,  contact  stockholders  to  provide  them  with information regarding the
Offer.  Such directors, officers or employees will  not make any recommendation
to  any  stockholder as to whether to tender all or any  Shares  and  will  not
solicit the  tender  of  any  Shares.   The  Company  will  not  compensate any
director, officer or employee for this service.

     Other than Capitol, the Company will not pay any solicitation  fees to any
broker, dealer, bank, trust company or other person for any Shares purchased in
connection with the Offer.

     The Company will pay all stock transfer taxes, if any, payable on  account
of  the  acquisition  of  the Shares by the Company pursuant to the Offer.  See
Instruction 5 of the Letter of Transmittal.

     Legg Mason has received  a  fee of $25,000 in connection with the delivery
of the Appraisal.  In addition, the  Company  has  agreed  to  pay Legg Mason's
reasonable  out-of-pocket  expenses  up to $4,000 and to indemnify  Legg  Mason
against  certain  liabilities, directly  or  indirectly,  in  connection  with,
arising out of, based  upon,  or  in  any way related to, its engagement by the
Company (including with respect to federal securities laws).

     The Company will pay to Capitol a fee of $5,000 plus brokerage commissions
of 1.5% of the total purchase price of  all  Shares purchased by the Company in
connection  with  the  Offer and reimburse Capitol  for  certain  out-of-pocket
expenses.  Capitol provides  its  services  as  a  broker/dealer for all of the
Company's transactions in its securities.

     17.  MISCELLANEOUS.

          The  Company is subject to certain of the informational  requirements
of the Exchange  Act  and  in  accordance  therewith  files  reports, and other
information  with the Commission relating to its business, financial  condition
and other matters.  The Company has also filed an Issuer Tender Offer Statement
on Schedule 13E-4  with  the  Commission,  which  includes  certain  additional
information  relating  to  the  Offer.   Such  reports,  as  well as such other
material,  may  be  inspected  and  copies  may be obtained at the Commission's
public reference facilities at 450 Fifth Street,  N.W., Washington, D.C. 20549,
and should also be available for inspection and copying at the regional offices
of the Commission located at 7 World Trade Center,  13th  Floor,  New York, New
York  10048,  and  Suite  1400,  Northwestern  Atrium  Center, 500 West Madison
Street,  Chicago, Illinois 60661.  The Commission maintains  a  Web  site  that
contains such  reports,  and  other information regarding registrants that file
electronically  with  the  Commission.    The   address   of   such   site   is
http://www.sec.gov.   Copies  of  such  material  may be obtained by mail, upon
payment  of  the  Commission's  customary  fees, from the  Commission's  Public
Reference  Section  at 450 Fifth Street, N.W.,  Washington,  D.C.  20549.   The
Company's Schedule 13E-4  may  not  be  available  at the Commission's regional
offices.

     The  Offer is being made to all holders of Shares.   The  Company  is  not
aware  of  any   state   where  the  making  of  the  Offer  is  prohibited  by
administrative or judicial  action  pursuant  to a valid state statute.  If the
Company becomes aware of any valid state statute  prohibiting the making of the
Offer, the Company will make a good faith effort to  comply  with such statute.
If, after such good faith effort, the Company cannot comply with  such statute,
the Offer will not be made to, nor will tenders be accepted from or  on  behalf
of,  holders of Shares in such state.  In those jurisdictions whose securities,
blue sky  or  other  laws  require the Offer to be made by a licensed broker or
dealer, the Offer shall be deemed to be made on behalf of the Company or one or
more  registered  brokers  or  dealers   licensed   under   the  laws  of  such
jurisdiction.


                               CTA INCORPORATED


November 26, 1997

<PAGE>
The Letter of Transmittal and any other required documents should  be  sent  or
delivered  by each holder of Shares to the Information Agent at its address set
forth below.



Questions and  requests for assistance may be directed to the Information Agent
at the address and telephone number set forth below.  Additional copies of this
Offer to Purchase, the Letter of Transmittal and other related materials may be
obtained from the Information Agent.


                    THE INFORMATION AGENT FOR THE OFFER IS:
                  CAPITOL SECURITIES MANAGEMENT INCORPORATED
                             8301 GREENSBORO DRIVE
                                   SUITE 150
                            MCLEAN, VIRGINIA  22102
                              TEL. (800) 878-2010

<PAGE>

                             LETTER OF TRANSMITTAL
                       TO TENDER SHARES OF COMMON STOCK
                                      OF

                               CTA INCORPORATED
                       PURSUANT TO THE OFFER TO PURCHASE
                            DATED NOVEMBER 26, 1997

THE OFFER, THE PRORATION PERIOD AND WITHDRAWAL RIGHTS EXPIRE AT 12:00 MIDNIGHT,
ROCKVILLE, MARYLAND  TIME, ON WEDNESDAY, DECEMBER 31, 1997, UNLESS THE OFFER IS
EXTENDED.

               TO:  CAPITOL SECURITIES MANAGEMENT, INCORPORATED


         BY MAIL, HAND OR OVERNIGHT DELIVERY:  BY FACSIMILE TRANSMISSION
         8301 Greensboro Drive, Suite 150     FACSIMILE:  (703) 821-7586
         McLean, VA  22102         CONFIRM BY TELEPHONE:  (800) 878-2010


 DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET FORTH
ABOVE OR TRANSMISSION OF INSTRUCTIONS VIA A FACSIMILE TO A NUMBER OTHER THAN AS
       SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY TO CAPITOL.

                   NOTE: SIGNATURES MUST BE PROVIDED BELOW.
          PLEASE READ THE ENTIRE LETTER OF TRANSMITTAL, INCLUDING THE
         ACCOMPANYING INSTRUCTIONS, CAREFULLY BEFORE CHECKING ANY BOX

<TABLE>
                                       DESCRIPTION OF SHARES TENDERED
                                         (SEE INSTRUCTIONS 2 AND 3)

NAME(S) AND ADDRESS(ES) OF
REGISTERED HOLDER(S)
(PLEASE FILL IN EXACTLY AS 
NAME(S) APPEAR(S)                               SHARES TENDERED
ON CERTIFICATE(S))                (ATTACH ADDITIONAL SIGNED LIST IF NECESSARY)
<CAPTION>
                                      TOTAL NUMBER
                                        OF SHARES                  NUMBER  OF
          CERTIFICATE                REPRESENTED BY                  SHARES
           NUMBER(S)*                CERTIFICATE(S)*               TENDERED**
<S>        <C>                       <C>                         <C>




                         TOTAL SHARES
</TABLE>
Indicate in this box the  order  (by certificate number) in which Shares are 
to be purchased in the event of proration.  (Attach an
additional signed list if necessary.)  See Instruction 10.
        1{st}                            2{nd}                        3{rd}

        4{th}                             5{th}

   *   Need not be completed by stockholders tendering Shares by book-entry 
transfer.
**     Unless otherwise indicated,  it  will  be assumed that all Shares 
represented by each Share certificate delivered to Capitol
   are being tendered hereby.  See Instruction 3.
<PAGE>


                                   ODD LOTS
                              (SEE INSTRUCTION 6)

     This section is to be completed ONLY if Shares are being tendered by or on
behalf of a person who was, as of the close of  business  on November 24, 1997,
and who continues to be at the Expiration Date, the record  or beneficial owner
of an aggregate of ninety-nine or fewer Shares and elects to have all of his or
her Shares purchased without proration.

The undersigned either (check one box):
(    owned beneficially, as of the close of business on November  24, 1997, and
     continues  to  own  beneficially  at the Expiration Date, an aggregate  of
     ninety-nine or fewer Shares, all of which are being tendered; or

(    is a broker, dealer, commercial bank,  trust company or other nominee that
     (i) is tendering, for the beneficial owner thereof, Shares with respect to
     which   it   is   the  record  owner,  and  (ii)  believes,   based   upon
     representations made  to it by such beneficial owner, that such beneficial
     owner owned beneficially,  as  of  the  close  of business on November 24,
     1997,  and  continues  to  own  beneficially  at the Expiration  Date,  an
     aggregate of ninety-nine or fewer Shares and is  tendering  all  of his or
     her Shares.



<PAGE>
Ladies and Gentlemen:

      The   undersigned   hereby   tenders  to  CTA  Incorporated,  a  Colorado
corporation (the "Company"), the above-described  shares  of  its common stock,
par value $.01 per share (the "Shares"), at the price per Share  of  $10.10 net
to the seller in cash, (the "Purchase Price") upon the terms and subject to the
conditions  set  forth  in the Offer to Purchase, dated November 26, 1997  (the
"Offer to Purchase"), receipt  of  which  is  hereby  acknowledged, and in this
Letter of Transmittal (which together constitute the "Offer").

      Subject to, and effective upon, acceptance for payment of and payment for
the Shares tendered herewith in accordance with the terms  and  subject  to the
conditions  of  the  Offer (including, if the Offer is extended or amended, the
terms and conditions of  any  such  extension  or  amendment),  the undersigned
hereby sells, assigns and transfers to, or upon the order of, the  Company  all
right,  title  and  interest  in  and to all the Shares that are being tendered
hereby  or  orders  the registration of  such  Shares  tendered  by  book-entry
transfer that are purchased  pursuant  to the Offer to or upon the order of the
Company and hereby irrevocably constitutes  and  appoints  Capitol the true and
lawful  agent  and  attorney-in-fact  of the undersigned with respect  to  such
Shares, with full power of substitution (such power of attorney being deemed to
be an irrevocable power coupled with an interest), to:

      (i)   deliver certificates for such Shares, or transfer ownership of such
            Shares on the account books maintained by Capitol, together, in any
            such  case,  with  all  accompanying   evidences  of  transfer  and
            authenticity, to or upon the order of the  Company  upon receipt by
            Capitol,  as  the undersigned's agent, of the Purchase  Price  with
            respect to such Shares;

      (ii)  present certificates  for such Shares for cancellation and transfer
            on the books of the Company; and

      (iii) receive  all  benefits  and   otherwise   exercise  all  rights  of
            beneficial  ownership of such Shares, all in  accordance  with  the
            terms of the Offer.

      The undersigned hereby  represents  and  warrants to the Company that the
undersigned has full power and authority to tender,  sell,  assign and transfer
the  Shares  tendered  hereby  and  that, when and to the extent the  same  are
accepted for payment by the Company,  the Company will acquire good, marketable
and unencumbered title thereto, free and  clear  of  all  liens,  restrictions,
charges,  encumbrances,  conditional  sales  agreements  or  other  obligations
relating  to the sale or transfer thereof, and the same will not be subject  to
any adverse  claims.   The  undersigned will, upon request, execute and deliver
any additional documents deemed  by  Capitol  or the Company to be necessary or
desirable to complete the sale, assignment and transfer of the Shares.

      The  undersigned  represents  and  warrants  to   the  Company  that  the
undersigned  has  read  and  agrees  to  all  of the terms of the  Offer.   All
authority herein conferred or agreed to be conferred  shall  not be affected by
and  shall  survive  the  death  or  incapacity  of  the undersigned,  and  any
obligation  of  the  undersigned  hereunder shall be binding  upon  the  heirs,
personal representatives, successors and assigns of the undersigned.  Except as
stated in the Offer, this tender is irrevocable.

      The undersigned understands that tenders of Shares pursuant to any one of
the procedures described in Section  3  of  the  Offer  to  Purchase and in the
Instructions will constitute the undersigned's representation  and  warranty to
the  Company  that  (i)  the  undersigned has a net long position in the Shares
being  tendered  within  the  meaning  of  Rule  14e-4  promulgated  under  the
Securities Exchange Act of 1934, as amended, and (ii) the tender of such Shares
complies with Rule 14e-4.  The  Company's  acceptance  for  payment  of  Shares
tendered pursuant to the Offer will constitute a binding agreement between  the
undersigned and the Company upon the terms and subject to the conditions of the
Offer.

      The  names  and addresses of the registered holders should be printed, if
they are not already  printed above, exactly as they appear on the certificates
representing Shares tendered  hereby,  if applicable.  The certificate numbers,
the number of Shares represented by such  certificates and the number of Shares
that the undersigned wishes to tender should  be  indicated  in the appropriate
boxes on this Letter of Transmittal.

      The  undersigned  understands  that  upon  the terms and subject  to  the
conditions  of  the Offer, the Company will pay $10.10  per  Share  for  up  to
200,000 Shares validly tendered and not withdrawn pursuant to the Offer, taking
into account the  number  of  Shares  so tendered.  The undersigned understands
that all Shares validly tendered and not  withdrawn  will  be  purchased at the
Purchase  Price  upon  the  terms  and subject to the conditions of the  Offer,
including its proration provisions,  and  that the Company will return promptly
all other Shares, including Shares not purchased because of proration.

      The undersigned recognizes that, under certain circumstances set forth in
the Offer to Purchase, the Company may terminate  or amend the Offer or may not
be required to purchase any of the Shares tendered  hereby  or  may  accept for
payment fewer than all of the Shares tendered hereby.

      Please  issue  and  mail  the  check for the Purchase Price of any Shares
purchased (less the amount of any federal  income  or  backup  withholding  tax
required to be withheld), and/or return any Shares (and accompanying documents,
as  appropriate)  not  tendered  or  not  purchased,  in  the  name(s)  of  the
undersigned  and  mail  to  the  undersigned  at  the  address  shown below the
undersigned's signature.

<PAGE>
                               PLEASE SIGN HERE

                     (TO BE COMPLETED BY ALL STOCKHOLDERS)



- ----------------------------------------------------------------------------
                          (Signature(s) of Owner(s))

Dated----------------------------------,1997

Name(s)--------------------------------

       --------------------------------
                 (Please Print)

Capacity (full title)-----------------------------------------------


Address-------------------------------------------------------------

                              (Include Zip Code)

Area Code and
Telephone No.------------------------------------------------------


      (Must  be  signed by registered holder(s) exactly as name(s) appear(s) on
Share certificate(s)  or  on  accounts  of  Capitol  or  on a security position
listing.   If  signature  is  by a trustee, executor, administrator,  guardian,
attorney-in-fact,  officer  of a  corporation  or  other  person  acting  in  a
fiduciary or representative capacity,  please  set  forth  full  title  and see
Instruction 4.)




<PAGE>
                                 INSTRUCTIONS

             FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER

      1.    DELIVERY  OF  LETTER  OF  TRANSMITTAL  AND  SHARE CERTIFICATES.  To
tender  Shares  validly  pursuant to the Offer the tendering  stockholder  must
deliver  a properly completed  and  duly  executed  Letter  of  Transmittal  or
photocopy thereof and any other documents required by the Letter of Transmittal
prior to the  Expiration  Date to Capitol at its address set forth on the front
page of this Letter of Transmittal  (by mail, by hand or by facsimile).  In the
event a stockholder holds Shares in certificate  form,  such stockholder should
deliver to Capitol the Letter of Transmittal along with the  certificate(s) for
such Shares.

     THE METHOD OF DELIVERY OF ALL DOCUMENTS, INCLUDING SHARE CERTIFICATES, THE
LETTER OF TRANSMITTAL AND ANY OTHER REQUIRED DOCUMENTS, IS AT  THE ELECTION AND
RISK OF THE TENDERING STOCKHOLDER, AND DELIVERY WILL BE DEEMED MADE  ONLY  WHEN
ACTUALLY  RECEIVED  BY  CAPITOL.   IF DELIVERY IS BY MAIL, REGISTERED MAIL WITH
RETURN RECEIPT REQUESTED, PROPERLY INSURED,  IS  RECOMMENDED.   IN  ALL  CASES,
SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.

      No alternative or contingent tenders will be accepted.  By executing this
Letter  of Transmittal (or facsimile thereof), the tendering stockholder waives
any right to receive any notice of the acceptance for payment of the Shares.

      2.    INADEQUATE  SPACE.  If the space provided herein is inadequate, the
certificate numbers and/or  the number of Shares should be listed on a separate
signed schedule and attached to this Letter of Transmittal.

      3.    PARTIAL TENDERS (NOT APPLICABLE TO STOCKHOLDERS WHO TENDER BY BOOK-
ENTRY TRANSFER).  If fewer than  all  the Shares represented by any certificate
delivered to Capitol are to be tendered,  fill in the number of Shares that are
to be tendered in the box entitled "Number of Shares Tendered." In such case, a
new certificate for the Shares not purchased  by  the Company in the Offer will
be  sent to the person(s) signing this Letter of Transmittal,  as  promptly  as
practicable  following  the expiration or termination of the Offer.  All Shares
represented by certificates  delivered  to  Capitol will be deemed to have been
tendered unless otherwise indicated.

      4.    SIGNATURES ON LETTER OF TRANSMITTAL.  If this Letter of Transmittal
is  signed  by  the registered holder(s) of the  Shares  tendered  hereby,  the
signatures(s) must  correspond  with  the name(s) as written on the face of the
certificates without alteration, enlargement or any change whatsoever.

      If any of the Shares tendered hereby  are  held  of record by two or more
persons, all such persons must sign this Letter of Transmittal.

      If any of the Shares tendered hereby are registered in different names on
different certificates, it will be necessary to complete,  sign  and  submit as
many  separate  Letters  of  Transmittal  (or  facsimiles thereof) as there are
different registrations of certificates.

      If this Letter of Transmittal or any certificate or stock power is signed
by a trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation or other person acting in a fiduciary  or  representative capacity,
such person should so indicate when signing, and proper  evidence  satisfactory
to the Company of the authority of such person so to act must be submitted.

      5.    STOCK TRANSFER TAXES.  Except as provided in this Instruction,  the
Company  will  pay or cause to be paid any stock transfer taxes with respect to
the sale and transfer  of  any Shares to it or its order pursuant to the Offer.
If, however, payment of the  aggregate  Purchase  Price  is  to  be made to, or
Shares not tendered or not purchased are to be registered in the name  of,  any
person  other  than  the  registered  holder(s),  or  if  tendered  Shares  are
registered  in  the  name  of  any person other than the person(s) signing this
Letter of Transmittal, the amount  of any stock transfer taxes (whether imposed
on the registered holder(s), such other person or otherwise) payable on account
of the transfer to such person will  be deducted from the Purchase Price unless
satisfactory evidence of the payment of  such taxes, or exemption therefrom, is
submitted.  See Section 5 of the Offer to Purchase.  Except as provided in this
Instruction 5, it will not be necessary to  affix  transfer  tax  stamps to the
certificates representing Shares tendered hereby.

      6.    ODD  LOTS.  As described in Section 1 of the Offer to Purchase,  if
fewer  than  all Shares  validly  tendered  and  not  withdrawn  prior  to  the
Expiration Date are to be purchased, the Shares purchased first will consist of
all Shares validly  tendered  and not withdrawn by any stockholder who owned of
record or beneficially, as of the  close  of business on November 24, 1997, and
continues to own of record or beneficially at the Expiration Date, an aggregate
of  ninety-nine  or  fewer Shares, and who validly  tendered  all  such  Shares
(partial tenders of Shares  will not qualify for this preference) and completed
the box captioned "Odd Lots" in this Letter of Transmittal.

      7.    SUBSTITUTE  FORM  W-9.    To  prevent  backup  federal  income  tax
withholding equal to 31% of the gross payments  payable  pursuant to the Offer,
each  stockholder  who  does not otherwise establish an exemption  from  backup
withholding  must  notify  Capitol   of  such  stockholder's  correct  taxpayer
identification number (or certify that  such  taxpayer  is  awaiting a taxpayer
identification  number)  and provide certain other information  by  completing,
under penalties of perjury,  the  Substitute Form W-9 included in the Letter of
Transmittal.

      8.    REQUESTS FOR ASSISTANCE  OR  ADDITIONAL  COPIES.   Any questions or
requests for assistance may be directed to Capitol at its telephone  number and
address listed below.  Requests for additional copies of the Offer to Purchase,
this  Letter  of  Transmittal  or other tender offer materials may likewise  be
directed  to  Capitol,  and such copies  will  be  furnished  promptly  at  the
Company's expense.

      9.    IRREGULARITIES.   All  questions as to the Purchase Price, the form
of documents and the validity, eligibility  (including  time  of  receipt)  and
acceptance  for  payment  of  any  tender  of  Shares will be determined by the
Company, in its sole discretion, which determination shall be final and binding
on all parties.  The Company reserves the absolute  right  to reject any or all
tenders of Shares that it determines are not in proper form  or  the acceptance
for payment of which or payment for which may, in the opinion of the  Company's
counsel,  be  unlawful.  The Company also reserves the absolute right to  waive
any of the conditions of the Offer and any defect or irregularity in the tender
of any particular  Shares  or  by any particular stockholder, and the Company's
interpretation of the terms of the Offer (including these Instructions) will be
final and binding on all parties.   No  tender  of  Shares will be deemed to be
validly made until all defects or irregularities have  been  cured  or  waived.
Neither the Company, Capitol, nor any other person is or will be under any duty
to  give  notice  of any defects or irregularities in tenders, and none of them
will incur any liability for failure to give any such notice.

      10.   ORDER OF PURCHASE IN EVENT OF PRORATION.  As described in Section 1
of the Offer to Purchase, stockholders tendering Shares in certificate form may
designate the order  of  priority  in which their Shares are to be purchased in
the event of proration.  The order of purchase may have an effect on the United
States federal income tax consequences  of  any  gain  or  loss  on  the Shares
purchased.  See Sections 1 and 14 of the Offer to Purchase.

     IMPORTANT:   THIS  LETTER OF TRANSMITTAL (OR A FACSIMILE THEREOF) TOGETHER
WITH SHARE CERTIFICATES,  OR  CONFIRMATION OF BOOK-ENTRY TRANSFER TOGETHER WITH
THIS LETTER OF TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS MUST BE RECEIVED BY
CAPITOL PRIOR TO THE EXPIRATION  DATE.  STOCKHOLDERS ARE ENCOURAGED TO RETURN A
COMPLETED SUBSTITUTE FORM W-9 WITH THEIR LETTER OF TRANSMITTAL.

<PAGE>


                              November 26, 1997





Dear Fellow Stockholder,

     On August 15, 1997, the  Company  completed  the  sale  of  its  Space and
Telecommunications  Systems  business and Mobile Information and Communications
Services business to Orbital Sciences  Corporation.   At that time, we informed
you that the Company may make a stockholder distribution  of  a  portion of the
proceeds  of  such sale.  We also have been exploring alternatives to  maximize
stockholder value,  and  to provide stockholders with the opportunity to obtain
liquidity  with  respect  to  their  shares  in  a  tax-efficient  manner.   In
implementing this strategy,  your Board of Directors has approved a self tender
to repurchase approximately $2.0  million  of the Company's common stock.  This
offer is explained in detail in the enclosed  Offer  to  Purchase and Letter of
Transmittal. Please note that the Offer is scheduled to expire  at  midnight on
Wednesday, December 31, 1997.

     If  you  wish to tender your shares, instructions on how to tender  shares
are provided in  the  enclosed  materials.   I  encourage  you  to  read  these
materials  carefully  before  making  any  decision  with respect to the Offer.
Neither the Company nor its Board of Directors makes any  recommendation to any
stockholder whether to tender any or all shares.

     We  have  retained  Capitol  Securities  Management, Incorporated  as  our
Information Agent to help you respond to this tender offer.  Please contact the
Information Agent at its toll free number, (800)  878-2010,  if  you  have  any
questions.   Suzanne  McKeown  will be pleased to answer your questions and can
help you complete the correct documents.

                              Sincerely,



                              Dr. C.E. Velez
                              Chairman and CEO
<PAGE>


                   FINANCING AND SECURITY AGREEMENT

THIS FINANCING AND SECURITY AGREEMENT (this "Agreement") is made this 6th
day of November, 1997, by and between CTA INCORPORATED, a Colorado
corporation (the "Borrower") and FIRST UNION COMMERCIAL CORPORATION, a
North Carolina corporation, its successors and assigns (the "Lender").

     RECITALS

A.   The Borrower has applied to the Lender for credit facilities
consisting of a revolving credit facility in the maximum principal amount
of Fifteen Million Dollars ($15,000,000) to be used by the Borrower for
the Permitted Uses, with a sublimit for letters of credit in the maximum
principal amount of Four Million Dollars ($4,000,000) and a term facility
in the maximum principal amount of Five Million Dollars ($5,000,000) to
be used by the Borrower for the Permitted Uses described in this
Agreement.

B.   The Lender is willing to make those credit facilities available to
the Borrower upon the terms and subject to the conditions set forth in
this Agreement.


     ARTICLE

     DEFINITIONS

SECTION . CERTAIN DEFINED TERMS.  As used in this Agreement, the terms
defined in the Preamble and Recitals hereto shall have the respective
meanings specified therein, and the following terms shall have the
following meanings:

"Account" individually and "Accounts" collectively mean all presently
existing or hereafter acquired, arising or created:

()   accounts, accounts receivable, contract rights, notes, drafts,
instruments acceptances, chattel paper, leases and writings evidencing a
monetary obligation, which arise from any right to payment for goods sold
or leased or for services rendered;

()   rights to receive the payment of money or other consideration under
present or future contracts for goods sold or leased or for services
rendered (including without limitation, all rights to receive payments
under presently existing or hereafter acquired or created Letters of
Credit in connection with such a sale or lease of goods or services) and
all such rights set forth in or arising out of any present or future
chattel paper, draft, lease, acceptance, writing, instrument, document or
general intangible;

()   all rights under or arising out of present or future contracts,
agreements or general interest in merchandise which gave rise to any or
all of the foregoing;
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()   all claims or causes of action which arise in connection with a sale
or lease of goods or services;

()   all books and records in whatever media (paper, electronic, or
otherwise) recorded or stored, with respect to any of the foregoing;

()   all equipment and general intangibles necessary or beneficial to
retain access and/or process the information contained in those books and
records;

()   and all proceeds (cash and non-cash) of the foregoing.

"Account Debtor" means any Person who is obligated on a Receivable and
"Account Debtors" mean all Persons who are obligated on the Receivables.

"Acquisition Cap" has the meaning set forth in Section 6.2.1.

"Affiliate" means, with respect to the Borrower, any Person, directly or
indirectly controlling, directly or indirectly controlled by, or under
direct or indirect common control with the Borrower or any Subsidiary, as
the case may be.

"Agreement" means this Financing and Security Agreement and all
amendments, modifications and supplements hereto which may from time to
time become effective in accordance with the provisions of Section 8.1.

"Assets" means at any date all assets that, in accordance with GAAP
consistently applied, should be classified as assets on a consolidated
balance sheet of the Borrower and its Subsidiaries.

"Assignment of Government Contracts" means those certain assignments of
government contracts as collateral now or hereafter executed and
delivered by the Borrower for the benefit of the Lender, as the same may
from time to time be amended, restated, supplemented or otherwise
modified.

"Bankruptcy Code" means the United States Bankruptcy Code, as amended
from time to time.

"Borrowing Base" has the meaning described in Section 2.1.3 (Borrowing
Base).

"Borrowing Base Deficiency" has the meaning described in Section 2.1.3
(Borrowing Base).

"Borrowing Base Report" has the meaning described in Section 2.1.4
(Borrowing Base Report).
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"Business Day" means any day other than a Saturday, Sunday or other day
on which commercial banks in the State are authorized or required to
close.

"Capital Expenditure" means an expenditure for Fixed or Capital Assets.
The term also includes, whether or not required by GAAP, the entering
into of a Capital Lease.

"Capital Lease" means any lease of real or personal property, for which
the related Lease Obligations have been or should be, in accordance with
GAAP consistently applied, capitalized on the balance sheet.

"Cash Equivalents" means (a) securities with maturities of one year or
less from the date of acquisition issued or fully guaranteed or insured
by the United States Government or any agency thereof, (b) certificates
of deposit with maturities of one (1) year or less from the date of
acquisition of, or money market accounts maintained with, the Lender or
any other domestic commercial bank having capital and surplus in excess
of One Hundred Million Dollars ($100,000,000.00) or such other domestic
financial institutions or domestic brokerage houses to the extent
disclosed to, and approved by, the Lender and (c) commercial paper of a
domestic issuer rated at least either A-1 by Standard & Poor's
Corporation or P-1 by Moody's Investors Service, Inc. with maturities of
six (6) months or less from the date of acquisition.

"Chattel Paper" means a writing or writings which evidence both a
monetary obligation and a security interest in or lease of specific
goods; any returned, rejected or repossessed goods covered by any such
writing or writings and all proceeds (in any form including, without
limitation, accounts, contract rights, documents, chattel paper,
instruments and general intangibles) of such returned, rejected or
repossessed goods; and all proceeds (cash and non-cash) of the foregoing.

"Closing Date" means the Business Day, in any event not later than
November 6,  1997, on which the Lender shall be satisfied that the
conditions precedent set forth in Section 5.1 (Conditions) have been
fulfilled.

"Collateral" means all property of the Borrower subject from time to time
to the Liens of this Agreement, the Security Documents and the other
Financing Documents, together with any and all cash and non-cash proceeds
and products thereof.

"Collateral Account" has the meaning described in Section 2.1.8
(Collateral Account).

"Collateral Disclosure List"  has the meaning described in Section 3.3
(Collateral Disclosure List).

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"Collection" means each check, draft, cash, money, instrument, item, and
other remittance in payment or on account of payment of the Accounts or
otherwise with respect to any Collateral, including, without limitation,
cash proceeds of any returned, rejected or repossessed goods, the sale or
lease of which gave rise to an Account, and other proceeds of Collateral;
and "Collections" means the collective reference to all of the foregoing.

"Commitment" means the Revolving Credit Commitment.

"Committed Amount" means the Revolving Loan Committed Amount or the Term
Loan Committed Amount, as the case may be, and "Committed Amounts" means
collectively the Revolving Loan Committed Amount and the Term Loan
Committed Amount.

"Commonly Controlled Entity" means an entity, whether or not
incorporated, which is under common control with the Borrower within the
meaning of Section 414(b) or (c) of the Internal Revenue Code.

"Credit Facility" means the Revolving Credit Facility, the Letter of
Credit Facility or the Term Loan Facility, as the case may be, and
"Credit Facilities" means collectively the Revolving Credit Facility, the
Letter of Credit Facility and the Term Loan Facility and any and all
other credit facilities now or hereafter extended under or secured by
this Agreement.

"Default" means an event which, with the giving of notice or lapse of
time, or both, could or would constitute an Event of Default under the
provisions of this Agreement.

"Documents" means all documents of title, whether now existing or
hereafter acquired or created, and all proceeds (cash and non-cash of the
foregoing).

"EBIT" means as to the Borrower and its Subsidiaries for any period of
determination thereof, earnings before interest and Taxes, determined in
accordance with GAAP consistently applied for such period.
Notwithstanding the preceding, for the fiscal quarter ending September
30, 1997, the Borrower's EBIT shall be calculated using an annualized
EBIT based on the EBIT for the three (3) fiscal quarters ending September
30,1997.  For the fiscal quarter ending December 31, 1997 and thereafter,
EBIT shall exclude up to Three Million Two Hundred Thousand Dollars
($3,200,000) of Employee Stock Ownership Plan expense.

"EBITDA" means as to the Borrower and its Subsidiaries for any period of
determination thereof, the sum of (a)earnings before interest and Taxes,
determined in accordance with GAAP consistently applied over the last
twelve (12) month period, plus (b) depreciation and amortization of
assets for such period.  Notwithstanding the preceding, for the three (3)
fiscal quarters ending September 30, 1997, the Borrower's EBITDA shall be
calculated using an annualized EBITDA based on the EBITDA for the fiscal
quarter ending September 30,1997. For the fiscal quarter ending December
31, 1997 and thereafter, EBITDA shall exclude up to Three Million Two
Hundred Thousand Dollars ($3,200,000) of Employee Stock Ownership Plan
expense.

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<PAGE>
"Eligibility Standards"  mean, at any time of determination thereof, each
Account which conforms and continues to conform to the following criteria
to the satisfaction of the Lender:  (a) the Account arose in the ordinary
course of the Borrower's business from a bona fide outright sale or lease
of goods by the Borrower, or from services performed by the Borrower, and
(i) such goods have been delivered to the appropriate Account Debtors or
their respective designees, the Borrower has in its possession shipping
and delivery receipts evidencing such shipment and delivery, no return,
rejection or repossession has occurred, and such goods have been finally
accepted by the Account Debtor, or (ii) such services have been
satisfactorily completed and accepted by the appropriate Account Debtor;
(b) the Account is based upon an enforceable order or contract, written
or oral, for goods delivered or for services performed, and the same were
shipped, held, or performed in accordance with such order or contract;
(c) the title of the Borrower to the Account and, except as to the
Account Debtor and any creditor which finances the Account Debtor's
purchase of such goods, to any goods is absolute and is not subject to
any prior assignment, claim, Lien, or security interest, except Permitted
Liens and Liens created by the Account Debtors in connection with their
interests in the goods, and the Borrower otherwise has the full and
unqualified right and power to assign and grant a security interest in it
to the Lender as security and collateral for the payment of the
Obligations; (d) the amount shown on the books of the Borrower and on any
invoice, certificate, schedule or statement delivered to the Lender is
owing to the Borrower and no partial payment has been received unless
reflected with that delivery; (e) the Account is not subject to any claim
of reduction, counterclaim, setoff, recoupment, or other defense in law
or equity, or any claim for credits, allowances, or adjustments by the
Account Debtor because of returned, inferior, or damaged goods or
unsatisfactory services, or for any other reason, other than those
adjustments which may arise as a result of regular audits performed by
any Governmental Authority; (f) the Account Debtor has not returned or
refused to retain, or otherwise notified the Borrower of any dispute
concerning, or claimed nonconformity of, any of the goods or services
from the sale of which the Account arose;  (g) the Account is not owing
by any Account Debtor for which the Lender has deemed twenty five percent
(25%) or more of such Account Debtor's other Accounts (or any portion
thereof) due to the Borrower fail to conform to the Eligibility
Standards, provided, however, that with respect to Eligible Billed
Government Receivables the Account is not owing by any Account Debtor for
which the Lender has deemed fifty percent (50%) or more of such Account
Debtor's other Accounts (or portion thereof) due to the Borrower fail to
conform to the Eligibility Standards; (h) the Account does not arise out
of a contract with, or order from, an Account Debtor that, by its terms,
forbids or makes void or unenforceable the assignment by the Borrower to
the Lender of the Account arising with respect thereto; (i) the Account
Debtor is not a foreign government or agency; (j) the Borrower is not
indebted in any manner to the Account Debtor, with the exception of
customary credits, adjustments and/or discounts given to an Account
Debtor by the Borrower in the ordinary course of its business, (k) no
part of the Account represents a progress billing or a retainage, (l) the
Accounts are not Ineligible Accounts, and (m) the Lender in the exercise
of its sole but reasonable discretion has not deemed the Account
ineligible because of uncertainty as to the creditworthiness of the
Account Debtor or because the Lender otherwise considers the collateral
value thereof to the Lender to be impaired or its ability to realize such
value to be insecure.  In the event of any dispute, under the foregoing
criteria, as to whether an Account is, or has ceased to satisfy the
Eligibility Standards, the decision of the Lender in the exercise of its
sole but reasonable discretion shall control.

"Eligible Billed Borrowing Base Receivable" and "Eligible Billed
Borrowing Base  Receivables" mean, at any time of determination thereof,
each Account which satisfies the Eligibility Standards and where the
Account Debtor is not incorporated in or primarily conducting business in
any jurisdiction outside of the United States of America and the Account
does not constitute an Eligible Billed Government Receivable.

"Eligible Billed Government Receivables" means all Eligible Billed
Borrowing Base Receivables representing amounts due and owing from any
Governmental Authority, provided, however, that the Lender reserves the
right in its sole but reasonable discretion to adjust the advance rate on
Eligible Billed Borrowing Base Receivables  from any state or any
political subdivision of any Governmental Authority, if at any time, the
credit rating of any such state or political subdivision is adjusted
below "investment grade".

"Eligible Billed Foreign Receivable" and "Eligible Billed Foreign
Receivables" means all Accounts which satisfy the Eligibility Standards
and which arise from any OECD country.

"Eligible Unbilled Borrowing Base Receivables" means all Accounts arising
out of work actually performed by the Borrower which (i) are eligible to
be billed in accordance with the applicable contract within ninety (90)
days of the "as of" date of the applicable Borrowing Base Report (with no
additional performance required by any Person, and no condition to
payment by the Account Debtor, other than receipt of an appropriate
invoice).

"Enforcement Costs" means all actual and reasonable expenses, charges,
costs and fees whatsoever (including, without limitation, attorney's fees
and expenses) of any nature whatsoever paid or incurred by or on behalf
of the Lender in connection with (a) any or all of the Obligations, this
Agreement and/or any of the other Financing Documents, (b) the creation,
perfection, collection, maintenance, preservation, defense, protection,
realization upon, disposition, sale or enforcement of all or any part of
the Collateral, this Agreement or any of the other Financing Documents,
including, without limitation, those costs and expenses more specifically
enumerated in Section 3.9 (Costs) and/or Section 8.8 (Enforcement Costs),
and (c) the monitoring, administration, processing and/or servicing of
any or all of the Obligations, the Financing Documents, and/or the
Collateral.

<PAGE>
"Equipment" means all equipment, machinery, computers, chattels, tools,
parts, machine tools, furniture, furnishings, fixtures and supplies of
every nature, presently existing or hereafter acquired or created and
wherever located, whether or not the same shall be deemed to be affixed
to real property, together with all accessions, additions, fittings,
accessories, special tools, and improvements thereto and substitutions
therefor and all parts and equipment which may be attached to or which
are necessary or beneficial for the operation, use and/or disposition of
such personal property, all licenses, warranties, franchises and general
intangibles related thereto or necessary or beneficial for the operation,
use and/or disposition of the same, together with all Accounts, Chattel
Paper, Instruments and other consideration received by the Borrower on
account of the sale, lease or other disposition of all or any part of the
foregoing, and together with all rights under or arising out of present
or future Documents and contracts relating to the foregoing and all
proceeds (cash and non-cash) of the foregoing.

"ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time.

"Event of Default" has the meaning described in Article 7.

"Excess Cash Flow" means for any annual period of determination thereof,
an amount equal to fifty percent (50%) of the Borrower's EBITDA, less all
of the Borrower's Capital Expenditures which are not financed, less all
cash taxes, less all principal and interest payments on Indebtedness for
Borrowed Money, less any distributions of the Borrower, all as shown on
the annual financial statements for such annual period, furnished to the
Lender in accordance with Section 6.1.1; or in the event that the
Borrower fails to deliver such financial statements to the Lender as and
when required, the Lender shall estimate, in its sole but reasonable
discretion, the amount of Excess Cash Flow for such period.

"Existing Subordinated Debt" means the subordinated debt having a current
unpaid principal balance as of the date hereof of not more than $450,000,
as more fully described in that certain Financing and Security Agreement
dated December 9, 1993 by and among the Borrower, the Lender and certain
then existing subsidiaries of the Borrower described therein

"Facilities" means the collective reference to the loan and other credit
facilities now or hereafter provided to the Borrower by the Lender
whether under this Agreement or otherwise.

"Fees" means the collective reference to each fee payable to the Lender
under the terms of this Agreement or under the terms of any of the other
Financing Documents, including, without limitation, the following:
Revolving Credit Unused Line Fees, Letter of Credit Fees, Origination
Fee, the Term Loan Origination Fee, and Field Examination Fees.

"Field Examination Fee" and "Field Examination Fees" have the meanings
described in Section 2.4.5 (Field Examination Fees).

<PAGE>
"Financing Documents" means at any time collectively this Agreement, the
Notes, the Security Documents, the Letter of Credit Documents, and any
other instrument, agreement or document previously, simultaneously or
hereafter executed and delivered by the Borrower, any Guarantor and/or
any other Person, singly or jointly with another Person or Persons,
evidencing, securing, guarantying or in connection with any of the
Obligations and/or in connection with this Agreement, any Note, any of
the Security Documents, any of the Facilities, and/or any of the
Obligations.

"First Union" means First Union National Bank, a national banking
association, its successors and assigns.

"Fixed Charges" means for any period of determination thereof, the
scheduled or required payments (including, without limitation, principal
and interest, but excluding principal on and all contingent economic
interest payments to be made on the Existing Subordinated Debt) on all
Indebtedness for Borrowed Money of the Borrower and its Subsidiaries,
plus rent of the Borrower and its Subsidiaries.

"Fixed Charge Coverage Ratio" means for the period of any determination
thereof the ratio of (a) EBITDA, minus cash Taxes, plus rent, minus
distributions (including any dividends), to (b) Fixed Charges.

"Fixed or Capital Assets" of a Person at any date means all assets which
would, in accordance with GAAP consistently applied, be classified on the
balance sheet of such Person as property, plant or equipment at such
date.

"GAAP" means generally accepted accounting principles in the United
States of America in effect from time to time.

"General Intangibles" means all general intangibles of every nature,
whether presently existing or hereafter acquired or created, including
without limitation all books and records, claims (including without
limitation all claims for income tax and other refunds), choses in
action, contract rights, judgments, patents, patent licenses, trademarks,
trademark licenses, licensing agreements, rights in intellectual
property, goodwill (including goodwill of the Borrower's business
symbolized by and associated with any and all trademarks, trademark
licenses, copyrights and/or service marks), royalty payments, licenses,
contractual rights, rights as lessee under any lease of real or personal
property, literary rights, copyrights, service names, service marks,
logos, trade secrets, amounts received as an award in or settlement of a
suit in damages, deposit accounts, rights in applications for any of the
foregoing, books and records in whatever media (paper, electronic or
otherwise) recorded or stored, with respect to any or all of the
foregoing and all equipment and general intangibles necessary or
beneficial desirable to retain, access and/or process the information
contained in those books and records, and all proceeds (cash and non-
cash) of the foregoing.

"Governmental Authority" means any nation or government, any state or
other political subdivision thereof and any entity exercising executive,
legislative, judicial, regulatory or administrative functions of or
pertaining to government and any department, agency or instrumentality
thereof.

<PAGE>
"Government Contract" and "Government Contracts" means written contracts
of the Borrower with the United States, or any agency, department or
instrumentality thereof and on which the Borrower is the "prime"
contractor.

"Hazardous Materials" means (a) any "hazardous waste" as defined by the
Resource Conservation and Recovery Act of 1976, as amended from time to
time, and regulations promulgated thereunder; (b) any "hazardous
substance" as defined by the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended from time to time, and
regulations promulgated thereunder; (c) any substance the presence of
which on any property now or hereafter owned or acquired by the Borrower
is prohibited by any Law similar to those set forth in this definition;
and (d) any other substance which by Law requires special handling in its
collection, storage, treatment or disposal.

"Hazardous Materials Contamination" means the contamination (whether
presently existing or occurring after the date of this Agreement) by
Hazardous Materials of any property owned, operated or controlled by the
Borrower or for which the Borrower has responsibility, including, without
limitation, improvements, facilities, soil, ground water, air or other
elements on, or of, any property now or hereafter owned or acquired by
the Borrower, and any other contamination by Hazardous Materials for
which the Borrower is, or is claimed to be, responsible.

"Indebtedness" of a Person means at any date the total liabilities of
such Person at such time determined in accordance with GAAP consistently
applied.

"Indebtedness for Borrowed Money" of a Person means at any time means the
sum at such time of (a) indebtedness of such Person for borrowed money or
for the deferred purchase price of property or services, (b) any
obligations of such Person in respect of letters of credit, banker's or
other acceptances or similar obligations issued or created for the
account of such Person, (c) Lease Obligations of such Person with respect
to Capital Leases, (d) all liabilities secured by any Lien on any
property owned by such Person, to the extent attached to such Person's
interest in such property, even though such Person has not assumed or
become personally liable for the payment thereof, (e) obligations of
third parties which are being guarantied or indemnified against by such
Person or which are secured by the property of such Person; (f) any
obligation of such Person under a employee stock ownership plan or other
similar employee benefit plan; and (f) any obligation of such Person or a
Commonly Controlled Entity to a Multiemployer Plan; but excluding trade
and other accounts payable in the ordinary course of business in
accordance with customary trade terms and which are not overdue (as
determined in accordance with customary trade practices) or which are
being disputed in good faith by such Person and for which adequate
reserves are being provided on the books of such Person in accordance
with GAAP.

<PAGE>
"Ineligible Accounts" means all Accounts which as determined in the
Lender's sole but reasonable discretion are (a) evidenced by a promissory
note or similar instrument; (b) owing from any Person that is the subject
of any (i) suit, lien, levy or judgment which could reasonably be
expected to affect the collectibility of said Accounts, or (ii)
bankruptcy, insolvency or similar process or proceeding; (c) unbilled as
a result of cost variances, retainage provisions, "milestone"
requirements or any other reason, except for timing differences; or (d)
with respect to otherwise Eligible Unbilled Borrowing Base Receivables,
any such Account which fails to satisfy the Eligibility Standards or is
otherwise deemed ineligible by the Lender, in its sole  but reasonable
discretion.

"Internal Revenue Code" means the Internal Revenue Code of 1986, as
amended from time to time, and the Income Tax Regulations issued and
proposed to be issued thereunder.

"Instrument" means a negotiable instrument (as defined under Article 3 of
the Uniform Commercial Code), a "certificated security" (as defined under
Article 8 of the Uniform Commercial Code), or any other writing which
evidences a right to payment of money and is not itself a security
agreement or lease and is of a type which is in the ordinary course of
business transferred by delivery with any necessary indorsement.

"Inventory" means all inventory of the Borrower and all right, title and
interest of the Borrower in and to all of its now owned and hereafter
acquired goods, merchandise and other personal property furnished under
any contract of service or intended for sale or lease, including, without
limitation, all raw materials, work-in-progress, finished goods and
materials and supplies of any kind, nature or description which are used
or consumed in the Borrower's business or are or might be used in
connection with the manufacture, packing, shipping, advertising, selling
or finishing of such goods, merchandise and other licenses, warranties,
franchises, general intangibles, personal property and all documents of
title or documents relating to the same and all proceeds (cash and non-
cash) of the foregoing.

"Item of Payment" means each check, draft, cash, money, instrument, item,
and other remittance in payment or on account of payment of the
Receivables or otherwise with respect to any Collateral, including,
without limitation, cash proceeds of any returned, rejected or
repossessed goods, the sale or lease of which gave rise to a Receivable,
and other proceeds of Collateral; and "Items of Payment" means the
collective reference to all of the foregoing.

"Laws" means all ordinances, statutes, rules, regulations, orders,
injunctions, writs, or decrees of any Governmental Authority or political
subdivision or agency thereof, or any court or similar entity established
by any thereof.

"Lease Obligations" of a Person means at any date the rental commitments
of such Person for such period under leases for real and/or personal
property (net of rent from subleases thereof, but including taxes,
insurance, maintenance and similar expenses which the lessee is obligated
to pay under the terms of said leases, except to the extent that such
taxes, insurance, maintenance and similar expenses are payable by
sublessees), including rental commitments under Capital Leases.
<PAGE>
"Letter of Credit" and "Letters of Credit" shall have the meanings
described in Section 2.3.1 hereof.

"Letter of Credit Agreement" means the collective reference to each
letter of credit application and agreement substantially in the form of
First Union's then standard form of application for letter of credit or
such other form as may be approved by the Lender and First Union,
executed and delivered by the Borrower in connection with the issuance of
a Letter of Credit, as the same may from time to time be amended,
restated, supplemented or modified and "Letter of Credit Agreements"
means all of the foregoing in effect at any time and from time to time.

"Letter of Credit Documents" means any and all drafts under or purporting
to be under a Letter of Credit, any Letter of Credit Agreement, and any
other instrument, document or agreement executed and/or delivered by the
Borrower or any other Person under, pursuant to or in connection with a
Letter of Credit or any Letter of Credit Agreement.

"Letter of Credit Facility" means the sublimit under the Revolving Credit
Facility for the issuance of Letters of Credit established by the Lender
pursuant to Section 2.3 (Letter of Credit Facility) of this Agreement.

"Letter of Credit Fee" and "Letter of Credit Fees" have the meanings
described in Section 2.3.2 hereof.

"Letter of Credit Obligations" means all Obligations of the Borrower with
respect to the Letters of Credit and the Letter of Credit Agreements.

"Liabilities" means at any date all liabilities that in accordance with
GAAP consistently applied should be classified as liabilities on a
consolidated balance sheet of the Borrower and its Subsidiaries.

"Lien" means any mortgage, deed of trust, deed to secure debt, grant,
pledge, security interest, assignment, encumbrance, judgment, lien, claim
or charge of any kind, whether perfected or unperfected, avoidable or
unavoidable, including, without limitation, any conditional sale or other
title retention agreement, any lease in the nature thereof, and the
filing of or agreement to give any financing statement under the Uniform
Commercial Code of any jurisdiction, excluding the precautionary filing
of any financing statement by any lessor in a true lease transaction, by
any bailor in a true bailment transaction or by any consignor in a true
consignment transaction under the Uniform Commercial Code of any
jurisdiction or the agreement to give any financing statement by any
lessee in a true lease transaction, by any bailee in a true bailment
transaction or by any consignee in a true consignment transaction.

"Loan" means each of the Revolving Loan or the Term Loan, as the case may
be, and "Loans" means the collective reference to the Revolving Loan and
the Term Loan.
<PAGE>
"Loan Notice" has the meaning described in Section 2.1.2 (Procedure for
Making Advances).

"Lockbox" has the meaning described in Section 2.1.7 (The Collateral
Account).

"Multiemployer Plan" means a Plan which is a multiemployer plan as
defined in Section 4001(a)(3) of ERISA.

"Note" means the Revolving Credit Note or the Term Note, as the case may
be, and "Notes" means collectively the Revolving Credit Note and the Term
Note, and any other promissory note which may from time to time evidence
the Obligations.

"Obligations" means all present and future indebtedness, obligations, and
liabilities, whether now existing or contemplated or hereafter arising,
of the Borrower to the Lender under, arising pursuant to, in connection
with and/or on account of the provisions of this Agreement, each Note,
each Security Document, and any of the other Financing Documents, the
Loans, and any of the Credit Facilities including, without limitation,
the principal of, and interest on, each Note, late charges, the Fees,
Enforcement Costs, and other prepayment penalties (if any), letter of
credit fees or fees charged with respect to any guaranty of any letter of
credit, and also means all other present and future indebtedness,
liabilities and obligations, whether now existing or contemplated or
hereafter arising, of the Borrower to the Lender of any nature whatsoever
regardless of whether such debts, obligations and liabilities be direct,
indirect, primary, secondary, joint, several, joint and several, fixed or
contingent; and any and all renewals, extensions and rearrangements of
any such debts, obligations and liabilities.

"Origination Fee" has the meaning described in Section 2.4.3 (Origination
Fee).

"Outstanding Letter of Credit Obligations" has the meaning described in
Section 2.3.3 hereof.

"PBGC" means the Pension Benefit Guaranty Corporation.

"Permitted Acquisitions" and "Permitted Acquisitions" have the meanings
given in Section 6.2.1 hereof.

<PAGE>
"Permitted Liens" means:  (a) Liens for Taxes which are not delinquent or
which the Lender has determined in the exercise of its sole but
reasonable discretion (i) are being diligently contested in good faith
and by appropriate proceedings, (ii) the Borrower has the financial
ability to pay, with all penalties and interest, at all times without
materially and adversely affecting the Borrower, and (iii) are not, and
will not be with appropriate filing, the giving of notice and/or the
passage of time, entitled to priority over any Lien of the Lender; (b)
deposits or pledges to secure obligations under workers' compensation,
social security or similar laws, or under unemployment insurance in the
ordinary course of business; (c) Liens in favor of the Lender; (d)
judgment Liens to the extent the entry of such judgment does not
constitute a Default or an Event of Default under the terms of this
Agreement or result in the sale of, or levy of execution on, any of the
Collateral; (e) mechanics and materialmen liens which are not, and will
not be with appropriate filing, the giving of notice and/or the passage
of time, entitled to priority over any Liens of the Lender and further
provided that if requested by the Lender the Borrower shall cause said
mechanics or materialmen liens to be extinguished; and (f) such other
Liens, if any, as are set forth on EXHIBIT "C" attached hereto and made a
part hereof.

"Permitted Uses" means (a) with respect to the Term Loan payments of
contingent economic interest to prior subordinated debt holders, and (b)
with respect to the Revolving Loan, the payment of expenses incurred in
the ordinary course of the Borrower's business.

"Person" means and includes an individual, a limited liability company, a
corporation, a partnership, a joint venture, a trust, an unincorporated
association, a government or political subdivision or agency thereof or
any other organization or entity.

"Plan" means any pension plan which is covered by Title IV of ERISA and
in respect of which the Borrower or a Commonly Controlled Entity is an
"employer" as defined in Section 3 of ERISA.

"Post-Default Rate" means the Prime Rate in effect from time to time,
plus two percent (2.0%) per annum.

"Prime Rate" means  the rate of interest from time to time established
and publicly announced by the Lender as its prime rate, in Lender's sole
discretion, which rate of interest may be greater or less than other
interest rates charged by the Lender to other borrowers and is not solely
based or dependent upon the interest rate which the Lender may charge any
particular borrower or class of borrowers.

"Prepayment" means a Revolving Loan Mandatory Prepayment or a Term Loan
Mandatory Prepayment, as the case may be, and "Prepayments" mean
collectively Revolving Loan Mandatory Prepayments and Term Loan Mandatory
Prepayments.

"Receivable" means one of the Borrower's now owned and hereafter owned,
acquired or created Accounts, Chattel Paper, General Intangibles and
Instruments and "Receivables" means all of the Borrower's now or
hereafter owned, acquired or created Accounts, Chattel Paper, General
Intangibles and Instruments, and all cash and non-cash proceeds and
products thereof.

"Reportable Event" means any of the events set forth in Section 4043(b)
of ERISA or the regulations thereunder.

<PAGE>
"Responsible Officer" means the chief executive officer of the Borrower
or the president of the Borrower or his designee, or  with respect to
financial matters, the chief financial officer of the Borrower.

"Revolving Credit Commitment" means the agreement of the Lender relating
to the making of the Revolving Loan and advances thereunder subject to
and in accordance with the provisions of this Agreement.

"Revolving Credit Commitment Period" means the period of time from the
Closing Date to the Business Day preceding the Revolving Credit
Termination Date.

"Revolving Credit Committed Amount" has the meaning described in Section
2.1.1 (Revolving Credit Facility).

"Revolving Credit Expiration Date" means September 30, 2000.

"Revolving Credit Facility" means the facility established by the Lender
pursuant to Section 2.1 (Revolving Credit Facility) of this Agreement.

"Revolving Credit Note" has the meaning described in Section 2.1.5
(Revolving Credit Note).

"Revolving Credit Termination Date" means the earlier of (a) the
Revolving Credit Expiration Date, or (b) the date on which the Revolving
Credit Commitment is terminated pursuant to Section 7.2.

"Revolving Credit Unused Line Fee" and "Revolving Credit Unused Line
Fees" have the meanings described in Section 2.1.9 (Revolving Credit
Unused Line Fee).

"Revolving Loan" has the meaning described in Section 2.1.1 (Revolving
Credit Facility).

"Revolving Loan Account" has the meaning described in Section 2.1.8
(Revolving Loan Account).

"Revolving Loan Mandatory Prepayment" and "Revolving Loan Mandatory
Prepayments" have the meanings described in Section 2.1.6 (Mandatory
Prepayments).

<PAGE>
"Security Documents" means collectively any assignment, pledge agreement,
security agreement, mortgage, deed of trust, deed to secure debt,
financing statement and any similar instrument, document or agreement
under or pursuant to which a Lien is now or hereafter granted to, or for
the benefit of, the Lender on any real or personal property to secure all
or any portion of the Obligations, all as the same may from time to time
be amended, restated, supplemented or otherwise modified, including,
without limitation, this Agreement and the Assignments of Government
Contracts.

"Senior Debt" means all Indebtedness for Borrowed Money of the Borrower
which is not subordinate to the repayment of the Obligations.

"State" means the State of Maryland.

"Subordinated Debt" means all Indebtedness for Borrowed Money of the
Borrower, now or hereafter incurred, in an aggregate face principal
amount not to exceed Five Million Dollars ($5,000,000) and the Existing
Subordinated Debt.

"Subordinated Debt Loan Documents" means any and all promissory notes,
agreements, document or instruments now or at any time evidencing,
securing, guarantying or otherwise executed and delivered in connection
with the Subordinated Debt, all of which must be in form and substance
satisfactory in all material respects to the Lender, in its sole, but
reasonable discretion, as the same may from time to time be amended,
restated supplemented or modified as permitted under this Agreement.

"Subordinated Indebtedness" means the Subordinated Debt the repayment of
which is subordinated to the Obligations by a written agreement in form
and substance satisfactory to the Lender, in its sole, but reasonable
discretion.

"Subordinated Lenders" means each and every present or future lender of
Subordinated Debt to the Borrower.

"Subsidiary" means any corporation the majority of the voting shares of
which at the time are owned directly by the Borrower and/or by one or
more Subsidiaries of the Borrower.

"Taxes" means all taxes and assessments whether general or special,
ordinary or extraordinary, or foreseen or unforeseen, of every character
(including all penalties or interest thereon), which at any time may be
assessed, levied, confirmed or imposed by any Governmental Authority on
the Borrower or any of its properties or assets or any part thereof or in
respect of any of its franchises, businesses, income or profits.

"Term Loan" has the meaning described in Section 2.2.1.

"Term Loan Commitment" has the meaning described in Section 2.2.1.

"Term Loan Committed Amount" has the meaning described in Section 2.2.1.

<PAGE>
"Term Loan Facility" means the facility established by the Lender
pursuant to Section 2.2 (Term Loan Facility) of this Agreement.

"Term Loan Mandatory Prepayment" and "Term Loan Mandatory Prepayments"
have the meanings described in Section 2.2.3.

"Term Loan Origination Fee" has the meaning described in Section 2.4.4.

"Term Note" has the meaning described in Section 2.2.2.

"Total Funded Debt" means all of the Borrower's Indebtedness for Borrowed
Money.

"Uniform Commercial Code" means, unless otherwise provided in this
Agreement, the Uniform Commercial Code as adopted by and in effect from
time to time in the State.

"Wholly Owned Subsidiary" means any domestic United States corporation
all the shares of stock of all classes of which (other than directors'
qualifying shares) at the time are owned directly or indirectly by the
Borrower and/or by one or more Wholly Owned Subsidiaries of the Borrower.

SECTION . ACCOUNTING TERMS AND OTHER DEFINITIONAL PROVISIONS.  Unless
otherwise defined herein, as used in this Agreement and in any
certificate, report or other document made or delivered pursuant hereto,
accounting terms not otherwise defined herein, and accounting terms only
partly defined herein, to the extent not defined, shall have the
respective meanings given to them under GAAP.  Unless otherwise defined
herein, all terms used herein which are defined by the Uniform Commercial
Code shall have the same meanings as assigned to them by the Uniform
Commercial Code unless and to the extent varied by this Agreement.  The
words "hereof", "herein" and "hereunder" and words of similar import when
used in this Agreement shall refer to this Agreement as a whole and not
to any particular provision of this Agreement, and article, section,
subsection, schedule and exhibit references are references to articles,
sections or subsections of, or schedules or exhibits to, as the case may
be, this Agreement unless otherwise specified.  As used herein, the
singular number shall include the plural, the plural the singular and the
use of the masculine, feminine or neuter gender shall include all
genders, as the context may require. Reference to any one or more of the
Financing Documents shall mean the same as the foregoing may from time to
time be amended, restated, substituted, extended, renewed, supplemented
or otherwise modified.


<PAGE>
     ARTICLE

                      THE CREDIT FACILITIES

SECTION . THE REVOLVING CREDIT FACILITY

 ..   REVOLVING CREDIT FACILITY.  Subject to and upon the provisions of
this Agreement, the Lender establishes a revolving credit facility in
favor of the Borrower. The aggregate of all advances under the Revolving
Credit Facility are sometimes referred to in this Agreement collectively
as the "Revolving Loan".

The principal amount of Fifteen Million Dollars ($15,000,000) is the
"Revolving Credit Committed Amount".

During the Revolving Credit Commitment Period, the Lender agrees to make
advances under the Revolving Credit Facility requested by the Borrower
from time to time provided that after giving effect to the Borrower's
request, the outstanding principal balance of the Revolving Loan and of
the Letter of Credit Obligations would not exceed the lesser of (a) the
Revolving Credit Committed Amount, or (b) the most current Borrowing
Base.

 ..   PROCEDURE FOR MAKING ADVANCES UNDER THE REVOLVING LOAN; LENDER
PROTECTION LOANS. The Borrower may borrow under the Revolving Credit
Commitment on any Business Day. Advances under the Revolving Loan shall
be deposited to the Borrower's demand deposit account with First Union or
shall be otherwise applied as directed by a Responsible Officer of the
Borrower, which direction the Lender may require to be in writing. No
later than 10:00 a.m. (Washington, D.C. time) on the date of the
requested borrowing, the Borrower shall give the Lender oral or written
notice (a "Loan Notice") of the amount and (if requested by the Lender)
the purpose of the requested borrowing.  If requested by the Lender, any
oral Loan Notice shall be confirmed in writing by the Borrower within
three (3) Business Days after the making of the requested Revolving Loan.
In addition, in lieu of the procedure set forth above, the Borrower
hereby irrevocably authorizes the Lender at any time and from time to
time, without further request from or notice to the Borrower, to make
advances under the Revolving Loan which the Lender, in its sole but
reasonable discretion, deems necessary and/or appropriate to protect the
Lender's interests under this Agreement, including, without limitation,
advances under the Revolving Loan made to cover debit balances in the
Revolving Loan Account, principal of, and/or interest on, the Loan, the
Obligations, and/or Enforcement Costs, prior to, on, or after the
termination of other advances under this Agreement, regardless of whether
the outstanding principal amount of the Revolving Loan which the Lender
may make hereunder exceeds the Revolving Credit Committed Amount.  The
Lender agrees that it will honor any overdrafts as directed by the
Borrower and agreed to by the Lender.  All such overdrafts will be
secured by the Collateral.

<PAGE>
 ..   BORROWING BASE.  As used in this Agreement, the term "Borrowing
Base" means at any time, an amount equal to the aggregate of (a) ninety
percent (90%) of Eligible Billed Government Receivables, which are
outstanding less than one hundred twenty-one (121) days from the date of
original invoice; plus (b) eighty percent (80%) of Eligible Billed
Borrowing Base Receivables representing amounts due and owing from
domestic Account Debtors (other than the Government), which are
outstanding less than ninety-one (91) days from the date of the original
invoice; plus (c) fifty percent (50%) of Eligible Unbilled Borrowing Base
Receivables; (d) plus the lesser of (i) seventy percent (70%) of Eligible
Billed Foreign Receivables, which are outstanding less than ninety-one
(91) days from the date of the original invoice or (ii) Two Million
Dollars ($2,000,000), MINUS (e) the amount of all outstanding Letters of
Credit.

The Borrowing Base shall be computed based on the Borrowing Base Report
most recently delivered to and accepted by the Lender in its sole but
reasonable discretion. In the event the Borrower fails to furnish a
Borrowing Base Report required by Section 2.1.4 below, or in the event
the Lender believes that a Borrowing Base Report is no longer accurate,
the Lender may, in its sole but reasonable discretion exercised from time
to time and without limiting its other rights and remedies under this
Agreement, suspend the making of or limit advances under the Revolving
Loan. The Borrowing Base shall be subject to reduction by amounts
credited to the Collateral Account since the date of the most recent
Borrowing Base Report and by the amount of any Receivable which was
included in the Borrowing Base but which the Lender determines fails to
meet the criteria applicable from time to time for Eligible Billed
Borrowing Base Receivables or Eligible Unbilled Borrowing Base
Receivables.

If at any time the total of the aggregate principal amount of the
Revolving Loan and Outstanding Letter of Credit Obligations exceed the
Borrowing Base, a borrowing base deficiency ("Borrowing Base Deficiency")
shall exist.  Each time a Borrowing Base Deficiency exists, the Borrower
at the sole and absolute discretion of the Lender exercised from time to
time shall pay the Borrowing Base Deficiency ON DEMAND to the Lender from
time to time.

Without implying any limitation on the Lender's discretion with respect
to the Borrowing Base, the Eligibility Standards, incorporated within the
definitions of Eligible Billed Borrowing Base Receivables, Eligible
Billed Foreign Receivables, Eligible Billed Government Receivables  and
Eligible Unbilled Borrowing Base Receivables are in part based upon the
business operations of the Borrower existing on or about the Closing Date
and upon information and records furnished to the Lender by the Borrower.
If at any time or from time to time hereafter, the business operations of
the Borrower change or such information and records furnished to the
Lender is incorrect or misleading, the Lender in its sole but reasonable
discretion, may at any time and from time to time during the duration of
this Agreement change such criteria or add new criteria.  The Lender may
communicate such changed or additional criteria to the Borrower from time
to time either orally or in writing.

<PAGE>
 ..   BORROWING BASE REPORT.  The Borrower will furnish to the Lender no
less frequently than the twentieth (20th) day of each month, and at such
other times as may be requested by the Lender a report of the Borrowing
Base (each a "Borrowing Base Report"; collectively, the "Borrowing Base
Reports") in the form required from time to time by the Lender,
appropriately completed and duly signed.  The Borrowing Base Report shall
contain the amount and payments on the Receivables and the calculations
of the Borrowing Base, all in such detail, and accompanied by such
supporting and other information, as the Lender may from time to time
request.  Upon the Lender's request and upon the creation of any
Receivables, or at such intervals as the Lender may require, the Borrower
will provide the Lender at the Borrower's offices during normal business
hours with:  (a) confirmatory assignment schedules; (b) copies of Account
Debtor invoices; (c) evidence of shipment or delivery; and (d) such
further schedules, documents and/or information regarding the Receivables
as the Lender may reasonably require. The items to be provided under this
subsection shall be in form satisfactory to the Lender, and certified as
true and correct by a Responsible Officer, and delivered to the Lender
from time to time solely for the Lender's convenience in maintaining
records of the Collateral. The Borrower's failure to deliver any of such
items to the Lender shall not affect, terminate, modify, or otherwise
limit the Lender's security interests in the Collateral.

 ..   REVOLVING CREDIT NOTE.  The obligation of the Borrower to pay the
Revolving Loan with interest shall be evidenced by a promissory note (as
from time to time extended, amended, restated, supplemented or otherwise
modified, the "Revolving Credit Note") substantially in the form of
EXHIBIT "A-1" attached hereto and made a part hereof, with appropriate
insertions. The Revolving Credit Note shall be dated as of the Closing
Date, shall be payable to the order of the Lender at the times provided
in the Revolving Credit Note, and shall be in the principal amount of the
Revolving Credit Committed Amount. The Borrower acknowledges and agrees
that, if the outstanding principal balance of the Revolving Loan from
time to time exceeds the face amount of the Revolving Credit Note, the
excess shall bear interest at the rates provided from time to time for
advances under the Revolving Credit Facility evidenced by the Revolving
Credit Note and shall be payable, with accrued interest, ON DEMAND.  The
Revolving Credit Note shall not operate as a novation of any of the
Obligations or nullify, discharge, or release any such Obligations or the
continuing contractual relationship of the parties hereto in accordance
with the provisions of this Agreement.

 ..   MANDATORY PREPAYMENTS OF REVOLVING LOAN.  The Borrower shall make
the mandatory prepayments of principal (each a "Revolving Loan Mandatory
Prepayment" and collectively, the "Revolving Loan Mandatory Prepayments")
of the Revolving Loan without penalty at any time and from time to time
in such amounts requested by the Lender pursuant to Section 2.1.3
(Borrowing Base) of this Agreement in order to cover any Borrowing Base
Deficiency.

<PAGE>
 ..   THE COLLATERAL ACCOUNT.  The Borrower will deposit, or cause to be
deposited, all Items of Payment to a bank account or accounts maintained
at First Union designated by the Lender and from which the Lender and
First Union alone have power of access and withdrawal (the "Collateral
Account"). Each deposit shall be made not later than the next Business
Day after the date of receipt of the Items of Payment. The Items of
Payment shall be deposited in precisely the form received, except for the
endorsements of the Borrower where necessary to permit the collection of
any such Items of Payment, which endorsement the Borrower hereby agrees
to make. In the event the Borrower fails to do so, the Borrower hereby
authorizes the Lender to make the endorsement in the name of the
Borrower.  Prior to such a deposit, the Borrower will not commingle any
Items of Payment with any of the Borrower's other funds or property, but
will hold them separate and apart in trust and for the account of the
Lender.

The Borrower shall direct the mailing of all Items of Payment from its
Account Debtors to a  post-office box designated by the Lender, or to
such other additional or replacement post-office boxes pursuant to the
request of the Lender from time to time (collectively, the "Lockbox").
The Lender and First Union shall have unrestricted and exclusive access
to the Lockbox.

Upon obtaining Items of Payment, the Lender and First Union are
authorized to inspect all Items of Payment, endorse all Items of Payment
in the name of the Borrower, and deposit such Items of Payment in the
appropriate Collateral Account designated by the Borrower.  For the
purpose of computing interest hereunder, all Items of Payment shall be
deemed applied by the Lender on account of the Obligations upon the
earlier of (i) the day of receipt by the Lender or First Union, if paid
in accordance with the past practice of First Union and/or the Lender.
In the event Items of Payment are returned to the Lender or First Union
for any reason whatsoever, the Lender and First Union may, in the
exercise of their discretion from time to time, forward such Items of
Payment a second time. Any returned Items of Payment shall be charged
back to the Collateral Account, the Revolving Loan Account, or other
account, as appropriate.

The Lender will, or will instruct First Union to,  apply the whole or any
part of the Items of Payment deposited into the Collateral Account
against the Revolving Loan as necessary to reduce the outstanding balance
of the Revolving Loan Account to zero or as close to zero as possible (or
after a Default, against any of the Obligations) and will credit any
remaining amount of such collected funds to the depository account of the
Borrower with the Lender or First Union upon deposit.

<PAGE>
 ..   REVOLVING LOAN ACCOUNT.  The Lender will establish and maintain a
loan account on its books (the "Revolving Loan Account") to which the
Lender will (a) DEBIT (i) the principal amount of each advance under the
Revolving Credit Facility made by the Lender hereunder as of the date
made, (ii) the amount of any interest accrued on such advance as and when
due, and (iii) any other amounts due and payable by the Borrower to the
Lender from time to time under the provisions of this Agreement in
connection with the Revolving Loan, including, without limitation,
Enforcement Costs, Fees, late charges, and service, collection and audit
fees, as and when due and payable, and (b) CREDIT all payments made by
the Borrower to the Lender or First Union on account of the Revolving
Loan as of the date made including, without limitation, funds credited to
the Revolving Loan Account from the Collateral Account. The Lender and
First Union may debit the Revolving Loan Account for the amount of any
Item of Payment which is returned to the Lender unpaid.  All credit
entries to the Revolving Loan Account are conditional and shall be
readjusted as of the date made if final and indefeasible payment is not
received by the Lender in cash or solvent credits.  The Borrower hereby
promises to pay to the order of the Lender, on demand, an amount equal to
the excess, if any, of all debit entries over all credit entries recorded
in the Revolving Loan Account under the provisions of this Agreement.
Any and all periodic or other statements or reconciliations, and the
information contained in those statements or reconciliations, of the
Revolving Loan Account shall be presumed conclusively to be correct and
shall constitute an account stated between the Lender, First Union and
the Borrower unless the Lender receives specific written objection
thereto from the Borrower within thirty (30) Business Days after such
statement or reconciliation shall have been sent by the Lender or First
Union.

 ..   REVOLVING CREDIT UNUSED LINE FEE.  The Borrower shall pay to the
Lender a quarterly revolving credit facility fee (collectively, the
"Revolving Credit Unused Line Fees" and individually, a "Revolving Credit
Unused Line Fee") in an amount equal to one quarter of one percent (1/4%)
per annum on the average daily unused and undisbursed portion of the
Revolving Credit Committed Amount in effect from time to time accruing
during each calendar quarter.  The accrued and unpaid portion of the
Revolving Credit Unused Line Fee shall be paid by the Borrower to the
Lender on the first day of the next calendar quarter, commencing on the
first such date following the date hereof, and on the Revolving Credit
Termination Date.

SECTION . THE TERM LOAN

 ..   TERM LOAN COMMITMENT. Subject to and upon the provisions of this
Agreement, the Lender agrees to make a loan (the "Term Loan") to the
Borrower on the Closing Date in the principal amount of Five Million
Dollars ($5,000,000) (herein called the "Term Loan Committed Amount").
The obligation of the Lender to make the Term Loan is herein called its
"Term Loan Commitment".

 ..   THE TERM NOTE. The obligation of the Borrower to pay the Term Loan
with interest shall be evidenced by a promissory note (as from time to
time extended, amended, restated, supplemented or otherwise modified, the
"Term Note") substantially in the form of EXHIBIT "A-2" attached hereto
and made a part hereof with appropriate insertions.

<PAGE>
 ..   MANDATORY PREPAYMENTS OF TERM LOAN.  The Borrower shall make
mandatory prepayments of principal (each a "Term Loan Mandatory
Prepayment" and collectively the "Term Loan Mandatory Prepayments") of
the Term Loan to the Lender annually.  Each Term Loan Mandatory
Prepayment shall be in the amount of the "Excess Cash Flow" for the then
preceding fiscal year and shall be payable on the date the Borrower
furnishes to the Lender the annual financial statements referred to in
Section 6.1.1 of this Agreement.  If, however, the Borrower fails to
furnish such financial statements in any given calendar year as and when
required, the Borrowers shall be required to pay the Term Loan Mandatory
Prepayment payable during such calendar year on the date which is ninety
(90) days after the close of the Borrower's then preceding fiscal year.
The Borrower shall pay to the Lender on the date of each Term Loan
Mandatory Prepayment accrued interest to such date on the amount prepaid.
Each Partial Term Loan Mandatory Prepayment shall be applied to the
balloon payment due at maturity and then to principal against the
principal installments in the inverse order of their maturity.

SECTION  .     THE LETTER OF CREDIT.

 ..   LETTERS OF CREDIT.  Subject to and upon the provisions of this
Agreement, and as a part of the Revolving Credit Commitment, the Borrower
may, upon the prior approval of the Lender and First Union, which
approval shall be in the Lender's and First Union's reasonable discretion
based on customary banking practices of the Lender and First Union and
existing Laws, obtain standby and documentary letters of credit (as the
same may from time to time be amended, supplemented or otherwise
modified, each a "Letter of Credit" and collectively the "Letters of
Credit") issued by First Union from time to time from the Closing Date
until the Business Day preceding the Revolving Credit Termination Date.
The Borrower will not be entitled to obtain a Letter of Credit hereunder
unless (a) the Borrower is then able to obtain an advance under the
Revolving Credit Facility from the Lender in an amount not less than the
amount of the Letter of Credit requested by the Borrower, and (b) the sum
of the then Outstanding Letter of Credit Obligations (including the
amount of the requested Letter of Credit) does not exceed Four Million
Dollars ($4,000,000).

 ..   LETTER OF CREDIT FEES.  Prior to or simultaneously with the opening
of each Letter of Credit, the Borrower shall pay to the Lender, a letter
of credit fee (each a "Letter of Credit Fee" and collectively the "Letter
of Credit Fees") in an amount equal to the then applicable LIBOR Rate
Additional Percentage (as such term is defined in the Revolving Credit
Note).  Such Letter of Credit Fees shall be paid upon the opening of the
Letter of Credit and upon each anniversary thereof, if any. In addition,
the Borrower shall pay to the Lender any and all additional issuance,
negotiation, processing, transfer or other fees to the extent and as and
when required by the provisions of any Letter of Credit Agreement; such
additional fees are included in and a part of the "Fees" payable by the
Borrower under the provisions of this Agreement.

<PAGE>
 ..   TERMS OF LETTERS OF CREDIT.  Each Letter of Credit shall (a) be
opened pursuant to a Letter of Credit Agreement, and (b) expire on a date
not later than the Business Day preceding the Revolving Credit Expiration
Date; provided, however, if any Letter of Credit does have an expiration
date later than the Business Day preceding the Revolving Credit
Termination Date, as of the Business Day preceding the Revolving Credit
Termination Date an advance of the Revolving Loan Credit Facility shall
be made by the Lender in the face amount of such Letter of Credit (or
Letters of Credit) and the proceeds thereof shall be deposited in an
account titled in the name of the Lender as trustee for the Borrower.
The proceeds of the trustee account referred to in the immediately
preceding sentence shall be held as collateral for the Letter of Credit
(or Letters of Credit) and in the event of a draw under the Letter of
Credit (or Letters of Credit), used to pay any such draw.  The aggregate
face amount of all Letters of Credit at any one time outstanding and
issued by the Lender pursuant to the provisions of this Agreement, plus
the amount of any unpaid Letter of Credit Fees accrued or scheduled to
accrue thereon, and less the aggregate amount of all drafts issued under
or purporting to have been issued under such Letters of Credit that have
been paid by the Lender, is herein called the "Outstanding Letter of
Credit Obligations".

 ..   PROCEDURE FOR LETTERS OF CREDIT.  The Borrower shall give the Lender
written notice at least three (3) Business Days prior to the date on
which a Letter of Credit is requested to be opened of their request for a
Letter of Credit.  Such notice shall be accompanied by a duly executed
and delivered Letter of Credit Agreement.  Upon receipt of the Letter of
Credit Agreement and the Letter of Credit Fee, the Lender shall cause
First Union to process such Letter of Credit Agreement in accordance with
its customary procedures and open such Letter of Credit on the Business
Day specified in such notice.   In the event of any conflict between the
provisions of this Agreement and any Letter of Credit Agreement, the
terms of this Agreement shall prevail.  Any provisions in any Letter of
Credit Agreement which purport to give the Lender (i) additional rights
and remedies (other than additional rights and remedies under the Uniform
Customs and Practice for Documentary Credits as in effect on the date of
the issuance of any Letter of Credit), (ii) additional collateral for any
Letter of Credit (other than any goods relating to the Letter of Credit)
or (ii) otherwise limit any grace or cure periods set forth herein; shall
be ineffective.

SECTION . GENERAL FINANCING PROVISIONS.

 ..   BORROWER'S REPRESENTATIVES.  The Lender is hereby irrevocably
authorized by the Borrower to make advances under the Loans to the
Borrower pursuant to the provisions of this Agreement upon the written,
oral or telephone request of any one of the Persons who is from time to
time a Responsible Officer of the Borrower under the provisions of the
most recent "Certificate" of corporate resolutions of the Borrower on
file with the Lender.  The Lender assumes no responsibility or liability
for any errors, mistakes, and/or discrepancies in the oral, telephonic,
written or other transmissions of any instructions, orders, requests and
confirmations between the Lender and the Borrower in connection with the
Credit Facilities, any Loan or any other transaction in connection with
the provisions of this Agreement other than for errors, mistakes and/or
discrepancies which arise directly from the Lender's gross negligence or
willful misconduct.

<PAGE>
 ..   USE OF PROCEEDS OF THE LOANS..  The proceeds of each advance under
the Loans shall be used by the Borrower for Permitted Uses, and for no
other purposes except as may otherwise be agreed by the Lender in
writing. In no event may the proceeds of either Loan be advanced by the
Borrower to any Subsidiary.  The Borrower shall use the proceeds of the
Loans promptly.

 ..   ORIGINATION FEE.  The Borrower shall pay to the Lender on or before
the Closing Date a loan origination fee (the "Origination Fee") for the
Revolving Credit Facility in the amount of Fifty Six Thousand Two Hundred
Fifty Dollars ($56,250.00), which fee has been fully earned and is non-
refundable.

 ..   TERM LOAN ORIGINATION FEE.  The Borrower shall pay to the Lender on
or before the Closing Date a loan origination fee (the "Term Loan
Origination Fee") for the Term Loan Facility in the amount of Thirty
Seven Thousand Five Hundred Dollars ($37,500.00), which fee has been
fully earned and is non-refundable.

 ..   FIELD EXAMINATION FEES.  The Borrower shall pay to the Lender a
field examination fee (collectively, the "Field Examination Fees" and
individually a "Field Examination Fee"), which Field Examination Fees
shall be payable promptly after each such examination is completed and
such Field Examination Fee is  invoiced by the Lender, provided, however,
prior to the occurrence of any Default, the cost of such Field
Examinations Fees shall not exceed Fifteen Thousand Dollars ($15,000) per
year and such audits will not be conducted more frequently than four (4)
times in any twelve (12) month period.  Each Field Examination Fee shall
be in the amount customarily charged by the Lender for the type of field
examination conducted.

 ..   COMPUTATION OF INTEREST AND FEES.  All interest under the Prime Rate
(set forth in the Notes) shall be calculated on the basis of a year of
365 days for the actual number of days elapsed.    All  applicable Fees
and interest under any LIBOR Rate (set forth in the Notes) shall be
calculated on the basis of a year of 360 days for the actual number of
days elapsed. Any change in the interest rate on any of the Obligations
resulting from a change in the Prime Rate shall become effective as of
the opening of business on the day on which such change in the Prime Rate
is announced.

 ..   PAYMENTS. All payments of the Obligations, including, without
limitation, principal, interest, Prepayments, and Fees, shall be paid by
the Borrower without setoff, recoupment or counterclaim to the Lender at
the Lender's office specified in the promissory note evidencing the
Obligations in immediately available funds not later than 12:00 noon,
Washington, D.C. time on the due date of such payment.  Alternatively, at
its sole discretion, the Lender may, or may cause First Union to charge
any deposit account of the Borrower at First Union with all or any part
of any amount due hereunder to the extent that the Borrower has not
otherwise tendered payment to the Lender.  All payments shall be applied
first to any unpaid Fees, second to any and all accrued and unpaid late
charges and Enforcement Costs, third to any and all accrued and unpaid
interest on the Obligations, and then to principal, all in such order and
manner as shall be determined by the Lender in its sole and absolute
discretion.
<PAGE>
     ..   LIENS; SETOFF.  The Borrower hereby grants to the Lender and
First Union a continuing Lien for all of the Obligations of the Borrower
upon any and all monies, securities, and other property of the Borrower
and the proceeds thereof, now or hereafter held or received by or in
transit to, the Lender or First Union from or for the Borrower, and also
upon any and all deposit accounts (general or special) and credits of the
Borrower, if any, with the Lender, First Union or any affiliate of the
Lender or First Union, at any time existing, excluding any deposit
accounts held by the Borrower in its capacity as trustee for Persons who
are not Affiliates of the Borrower.  Without implying any limitation on
any other rights the Lender or First Union may have under the Financing
Documents or applicable Laws, during the continuance of an Event of
Default, the Lender and First Union are each hereby authorized by the
Borrower at any time and from time to time, without prior notice to the
Borrower, to set off, appropriate and apply any or all items hereinabove
referred to against all Obligations then outstanding, all in such order
and manner as shall be determined by the Lender in its sole and absolute
discretion.  In the event the Lender exercises any right of set off, the
Lender agrees to endeavor to promptly notify the Borrower of such set
off, provided, however, that the Lender shall not be liable to the
Borrower, or any Person,  for any failure to provide any such notice.

     ARTICLE

     THE COLLATERAL

SECTION . DEBT AND OBLIGATIONS SECURED.  All property and Liens assigned,
pledged or otherwise granted under or in connection with this Agreement
(including, without limitation, those under Section 3.2 (Grant of Liens)
below) or any of the Financing Documents shall secure (a) the payment of
all of the Obligations, and (b) the performance, compliance with and
observance by the Borrower of the provisions of this Agreement and all of
the other Financing Documents or otherwise under the Obligations.

<PAGE>
SECTION . GRANT OF LIENS.  The Borrower hereby assigns, pledges and
grants to the Lender, and agrees that the Lender shall have a perfected
and continuing security interest in, and Lien on, () all of the
Borrower's Accounts, Inventory, Chattel Paper, Documents, Instruments,
Equipment and General Intangibles, whether now owned or existing or
hereafter acquired or arising, (it being understood and agreed, that with
respect to any Inventory and/or Equipment where perfection of the
Lender's lien requires the filing of Uniform Commercial Code financing
statements outside of the States of Maryland, Colorado, California, or
Texas, that the Lender will not, as of the Closing Date, have a perfected
lien on such Inventory and/or Equipment) () all returned, rejected or
repossessed goods, the sale or lease of which shall have given or shall
give rise to an Account or Chattel Paper, () all insurance policies
relating to the foregoing, () all books and records in whatever media
(paper, electronic or otherwise) recorded or stored, with respect to the
foregoing and all Equipment and General Intangibles necessary or
beneficial to retain, access and/or process the information contained in
those books and records, and () all cash and non-cash proceeds and
products of the foregoing.  The Borrower further agrees that the Lender
shall have in respect thereof all of the rights and remedies of a secured
party under the Uniform Commercial Code as well as those provided in this
Agreement, under each of the other Financing Documents and under
applicable Laws.

SECTION . COLLATERAL DISCLOSURE LIST.  On or prior to the Closing Date,
the Borrower shall deliver to the Lender a list (the "Collateral
Disclosure List") which shall contain such information with respect to
the Borrower's business and real and personal property as the Lender may
require and shall be certified by a Responsible Officer of the Borrower,
all in the form provided to the Borrower by the Lender.  Promptly after
demand by the Lender, the Borrower shall furnish to the Lender an update
of the information contained in the Collateral Disclosure List at any
time and from time to time as may be requested by the Lender.

SECTION . PERSONAL PROPERTY.  The Borrower acknowledges and agrees that
it is the intention of the parties to this Agreement that the Lender
shall have a first priority, perfected Lien, in form and substance
satisfactory to the Lender and its counsel, on all of the Borrower's
personal property described in Section 3.2 above, whether now owned or
hereafter acquired, subject only to the Permitted Liens, if any.

SECTION . RECORD SEARCHES.  As of the Closing Date and thereafter at the
time any Financing Document is executed and delivered by the Borrower
pursuant to this Section, the Lender shall have received, in form and
substance satisfactory to the Lender, such Lien or record searches with
respect to the Borrower and/or any other Person, as appropriate, and the
property covered by such Financing Document showing that the Lien of such
Financing Document will be a perfected first priority Lien on the
property covered by such Financing Document subject only to Permitted
Liens or to such other matters as the Lender may approve.

SECTION . GOVERNMENT ASSIGNMENTS.  The Borrower and each Subsidiary
acknowledge and agree that it is the intention of the parties to this
Agreement that the Lender shall have a direct first Lien against all
monies due or to become under and by virtue of all contracts now or
hereafter with the United States of America, or any department, agency,
or instrumentality thereof, under the Federal Assignment of Claims Act of
1940, notice of which Lien may be filed with the appropriate Governmental
Authority at any time with the Borrower's consent and at any time in the
Lender's sole and absolute discretion, after the occurrence of any
Default.

SECTION . COSTS.  The Borrower agrees to pay, as part of the Enforcement
Costs and to the fullest extent permitted by applicable Laws, on demand
all actual costs, fees and expenses incurred by the Lender in connection
with the taking, perfection, preservation, protection and/or release of a
Lien on the Collateral, including, without limitation:

()   customary fees and expenses incurred in preparing Financing
Documents from time to time (including, without limitation, reasonable
attorneys' fees incurred in connection with preparing the Financing
Documents);

<PAGE>
()   all filing and/or recording taxes or fees;

()   all costs of Lien and record searches;

()   reasonable attorneys' fees in connection with all legal opinions
required;

()   all related costs, fees and actual expenses.

SECTION . RELEASE.  Upon the payment and performance of all Obligations
of the Borrower and all obligations and liabilities of each other Person,
other than the Lender, under this Agreement and all other Financing
Documents, the termination and/or expiration of the Commitments and
Outstanding Letter of Credit Obligations, upon the Borrower's request and
at the Borrower's sole cost and expense, the Lender shall release and/or
terminate any Financing Document but only if and provided that there is
no commitment or obligation (whether or not conditional) of the Lender to
re-advance amounts which would be secured thereby.

SECTION . INCONSISTENT PROVISIONS.  In the event that the provisions of
any Financing Document directly conflict with any provision of this
Agreement, the provision of this Agreement governs.


     ARTICLE

     REPRESENTATIONS AND WARRANTIES

SECTION . REPRESENTATIONS AND WARRANTIES.  The Borrower represents and
warrants to the Lender and shall be deemed to represent and warrant at
the time of each request for an advance under the Loans or request for a
Letter of Credit under the terms of this Agreement and again at the time
of the making of any advance under the Loans or the issuance of any
Letter of Credit, as follows:

 ..   SUBSIDIARIES. The Borrower has the Subsidiaries listed on the
Collateral Disclosure List attached hereto and made a part hereof and no
others.  Each of the Subsidiaries is a Wholly Owned Subsidiary except as
shown on the Collateral Disclosure List, which correctly indicates the
nature and amount of the Borrower's ownership interests therein.  None of
the Subsidiaries are operating companies.

<PAGE>
 ..   GOOD STANDING. The Borrower (a) is a corporation duly organized,
existing and in good standing under the laws of the jurisdiction of its
incorporation, (b) has the corporate power to own its property and to
carry on its business as now being conducted, and (c) is duly qualified
to do business and is in good standing in each jurisdiction in which the
character of the properties owned by it therein or in which the
transaction of its business makes such qualification necessary.

 ..   POWER AND AUTHORITY.  The Borrower has full corporate power and
authority to execute and deliver this Agreement and the other Financing
Documents to which it is a party, to make the borrowings under this
Agreement, and to incur and perform the Obligations whether under this
Agreement, the other Financing Documents or otherwise, all of which have
been duly authorized by all proper and necessary corporate action.  No
consent or approval of shareholders or any creditors of the Borrower, and
no consent, approval, filing or registration with or notice to any
Governmental Authority on the part of the Borrower, is required as a
condition to the execution, delivery, validity or enforceability of this
Agreement or the other Financing Documents or the performance by the
Borrower of the Obligations.

 ..   BINDING AGREEMENTS.  This Agreement and the other Financing
Documents executed and delivered by the Borrower have been properly
executed and delivered and constitute the valid and legally binding
obligations of the Borrower and are fully enforceable against the
Borrower in accordance with their respective terms, subject to (a)
bankruptcy, insolvency, reorganization, moratorium or other laws
affecting creditors' rights generally, (b) general principles of equity
(regardless of whether such principles of equity are asserted in an
action or proceeding at law or in equity) or the discretion of the court
before which any action or proceeding may be brought and (c) other
applicable Laws which may limit the enforceability of certain of the
remedial or procedural provisions contained in the Financing Documents.

 ..   NO CONFLICTS. Neither the execution, delivery and performance of the
terms of this Agreement or of any of the other Financing Documents
executed and delivered by the Borrower nor the consummation of the
transactions contemplated by this Agreement will conflict with, violate
or be prevented by (a) the Borrower's charter or bylaws, (b) any existing
mortgage, indenture, contract or agreement binding on the Borrower or
affecting its property, or (c) any Laws.

 ..   NO DEFAULTS, VIOLATIONS.

()   No Default or Event of Default has occurred and is continuing.

()   The Borrower is not in default under or with respect to any
obligation under any existing mortgage, indenture, contract or agreement
binding on it or affecting its property, including, but not limited to,
the Subordinated Indebtedness, in any respect which could be materially
adverse to the business, operations, property or financial condition of
the  Borrower, or which could materially adversely affect the ability of
the Borrower to perform its obligations under this Agreement or the other
Financing Documents, to which the Borrower is a party.

<PAGE>
 ..   COMPLIANCE WITH LAWS.  The Borrower is not in violation of any
applicable Laws (including, without limitation, any Laws relating to
employment practices, to environmental, occupational and health standards
and controls) or order, writ, injunction, decree or demand of any court,
arbitrator, or any Governmental Authority affecting the Borrower or any
of its properties, the violation of which, considered in the aggregate,
could materially adversely affect the business, operations or properties
of the Borrower.

 ..   MARGIN STOCK.  None of the proceeds of the Loans will be used,
directly or indirectly, by the Borrower for the purpose of purchasing or
carrying, or for the purpose of reducing or retiring any indebtedness
which was originally incurred to purchase or carry, any "margin security"
within the meaning of Regulation G (12 CFR Part 207), or "margin stock"
within the meaning of Regulation U (12 CFR Part 221), of the Board of
Governors of the Federal Reserve System or for any other purpose which
might make the transactions contemplated in this Agreement a "purpose
credit" within the meaning of said Regulation G or Regulation U, or cause
this Agreement to violate any other regulation of the Board of Governors
of the Federal Reserve System or the Securities Exchange Act of 1934 or
the Small Business Investment Act of 1958, as amended, or any rules or
regulations promulgated under any of such statutes.

 ..   INVESTMENT COMPANY ACT; MARGIN SECURITIES.  Neither the Borrower nor
any of its Subsidiaries is an investment company within the meaning of
the Investment Company Act of 1940, as amended, nor is it, directly or
indirectly, controlled by or acting on behalf of any Person which is an
investment company within the meaning of said Act. Neither the Borrower
nor any of its Subsidiaries is engaged principally, or as one of its
important activities, in the business of extending credit for the purpose
of purchasing or carrying "margin security" within the meaning of
Regulation G (12 CFR Part 207), or "margin stock" within the meaning of
Regulation U (12 CFR Part 221), of the Board of Governors of the Federal
Reserve System.

 ..   LITIGATION.  Except as otherwise disclosed to the Lender on EXHIBIT
B attached to and made a part of this Agreement, there are no
proceedings, actions or investigations pending or, so far as the Borrower
knows, threatened before or by any court, arbitrator any Governmental
Authority which, in any one case or in the aggregate, if determined
adversely to the interests of the Borrower, would have a material adverse
effect on the business, properties, condition (financial or otherwise) or
operations, present or prospective, of the Borrower.

<PAGE>
 ..   FINANCIAL CONDITION.  The consolidated financial statements of the
Borrower dated December 31, 1996 , when taken together with the
statements for the twelve (12) months ending June 30, 1997 are complete
and correct and fairly present the financial position of the Borrower and
its Subsidiaries and the results of their operations and transactions in
their surplus accounts as of the date and for the period referred to and
have been prepared in accordance with GAAP applied on a consistent basis
throughout the period involved.  There are no liabilities, direct or
indirect, fixed or contingent, of the Borrower or its Subsidiaries as of
the date of such financial statements which are not reflected therein or
in the notes thereto.  There has been no adverse change in the financial
condition or operations of the Borrower or its Subsidiaries since the
date of such financial statements and to the Borrower's knowledge no such
adverse change is pending or threatened. Neither the Borrower nor any
Subsidiary has guaranteed the obligations of, or made any investment in
or advances to, any Person, except as disclosed in such financial
statements. The representations and warranties contained in this Section
shall also cover financial statements furnished from time to time to the
Lender pursuant to Section 6.1.1 (Financial Statements) of this
Agreement.

 ..   FULL DISCLOSURE.  The financial statements referred to in Section
4.1.11 (Financial Condition) of this Agreement, the Financing Documents
(including, without limitation, this Agreement), and the statements,
reports or certificates furnished by the Borrower in connection with the
Financing Documents (a) do not contain any untrue statement of a material
fact and (b) when taken in their entirety, do not omit any material fact
necessary to make the statements contained therein not misleading.  There
is no fact known to the Borrower which the Borrower has not disclosed to
the Lender in writing prior to the date of this Agreement with respect to
the transactions contemplated by the Financing Documents which materially
and adversely affects or in the future could, in the reasonable opinion
of the Borrower materially adversely affect the condition, financial or
otherwise, results of operations, business, or assets of the Borrower.

 ..   INDEBTEDNESS FOR BORROWED MONEY.  Except for the Obligations and the
Existing Subordinated Debt, the Borrower has no Indebtedness for Borrowed
Money.

 ..   TAXES.  Each of the Borrower and its Subsidiaries has filed all
returns, reports and forms for Taxes which, to the knowledge of the
Borrower, are required to be filed, and has paid all Taxes as shown on
such returns or on any assessment received by it, to the extent that such
Taxes have become due, unless and to the extent only that such Taxes,
assessments and governmental charges are currently contested in good
faith and by appropriate proceedings by the Borrower, such Taxes are not
the subject of any Liens other than Permitted Liens, and adequate
reserves therefor have been established as required under GAAP. All tax
liabilities of the Borrower were as of the date of audited financial
statements referred to in Section 4.1.11 (Financial Condition) above, and
are now, adequately provided for on the books of the Borrower or its
subsidiaries, as appropriate. No tax liability has been asserted by the
Internal Revenue Service or any state or local authority against  the
Borrower for taxes in excess of those already paid.

<PAGE>
 ..   ERISA. With respect to any "pension plan" as defined in SECTION 3(2)
of ERISA, which plan is now or previously has been maintained or
contributed to by the Borrower and/or by any commonly controlled entity:
(a) no "accumulated funding deficiency" as defined in Code <section>412
or ERISA <section>302 has occurred, whether or not that accumulated
funding deficiency has been waived; (b) no Reportable Event has occurred;
(c) no termination of any plan subject to Title IV of ERISA has occurred;
(d) neither the Borrower nor any commonly controlled entity (as defined
under ERISA) has incurred a "complete withdrawal" within the meaning of
ERISA <section>4203 from any multiemployer plan; (e) neither the Borrower
nor any commonly controlled entity has incurred a "partial withdrawal"
within the meaning of ERISA <section>4205 with respect to any
multiemployer plan; (f) no multiemployer plan to which the Borrower or
any commonly controlled entity has an obligation to contribute is in
"reorganization" within the meaning of ERISA <section>4241 nor has notice
been received by the Borrower or any commonly controlled entity that such
a multiemployer plan will be placed in "reorganization".

 ..   TITLE TO PROPERTIES.  Subject to the Permitted Liens, the Borrower
has good and marketable title to all of its properties, including,
without limitation, the Collateral and the properties and assets
reflected in the balance sheets described in Section 4.1.11 (Financial
Condition) above. The Borrower has legal, enforceable and uncontested
rights to use freely such property and assets.

 ..   PATENTS, TRADEMARKS, ETC The Borrower owns, possesses, or has the
right to use all necessary patents, patent rights, licenses, trademarks,
trademark rights, trade names, trade name rights, logos, copyrights,
permits and franchises to own its properties conduct its business as now
conducted, without known conflict with the rights of any other Person.
Any and all obligations to pay royalties or other charges with respect to
such properties and assets are properly reflected on the financial
statements described in Section 4.1.11 (Financial Condition) above.

 ..   PRESENCE OF HAZARDOUS MATERIALS OR HAZARDOUS MATERIALS
CONTAMINATION.  To the best of the Borrower's knowledge, (a) no Hazardous
Materials are located on any real property owned, controlled or operated
by of the Borrower or for which the Borrower is responsible, except for
reasonable quantities of necessary supplies for use by the Borrower in
the ordinary course of the its current line of business and stored, used
and disposed in accordance with applicable Laws; and (b) no property
owned, controlled or operated by the Borrower has ever been used as a
manufacturing, storage, or dump site for Hazardous Materials nor is
affected by Hazardous Materials Contamination at any other property.

 ..   PERFECTION AND PRIORITY OF COLLATERAL.  The Lender has, or upon
execution and recording of this Agreement and the Security Documents will
have, and will continue to have as security for the Obligations, a valid
and perfected Lien on and security interest in all Collateral, free of
all other Liens, claims and rights of third parties whatsoever except
Permitted Liens.

<PAGE>
 ..   PLACES OF BUSINESS AND LOCATION OF COLLATERAL.  The information
contained in the Collateral Disclosure List is complete and correct. The
Collateral Disclosure List completely and accurately identifies the
address of (a) the Borrower's chief executive office, (b) any and each
other place of business of the Borrower, (c) the location of all books
and records pertaining to the Collateral, and (d) each location, other
than the foregoing, where any of the Collateral is located. The proper
and only places to file financing statements with respect to the
Collateral within the meaning of the Uniform Commercial Code are the
filing offices for those jurisdictions in which the Borrower maintains a
place of business as identified on the Collateral Disclosure List.  The
Borrower further represents and warrants to the Lender, that the value of
any Collateral kept outside of the States of Maryland, Texas, California
or Colorado is and will at all times remain minimal in the aggregate.

 ..   BUSINESS NAMES AND ADDRESSES.  In the twelve (12) years preceding
the date hereof, the Borrower has not changed its name, identity or
corporate structure, has not conducted business under any name other than
its current name, and those of its Subsidiaries, and has not conducted
its business in any jurisdiction other than those disclosed on the
Collateral Disclosure List.

 ..   EQUIPMENT. All Equipment is personalty and is not and will not be
affixed to real estate in such manner as to become a fixture or part of
such real estate. No equipment is held by the Borrower on a sale on
approval basis.

 ..   INVENTORY. The Inventory of the Borrower, if any, is (a) of good and
merchantable quality, free from defects, (b) not stored with a bailee,
warehouseman, carrier, or similar party, (c) not on consignment, sale on
approval, or sale or return, and (d) will be located at the places of
business set forth on the Collateral Disclosure List.  No goods offered
for sale by, or in the possession or control of, the Borrower are
consigned to or held on sale or return terms by the Borrower.

 ..   ACCOUNTS. With respect to all Accounts and to the best of the
Borrower's knowledge (a) they are genuine, and in all respects what they
purport to be, and are not evidenced by a judgment, an Instrument, or
Chattel Paper (unless such judgment has been assigned and such Instrument
or Chattel Paper has been endorsed and delivered to the Lender); (b) they
represent bona fide transactions completed in accordance with the terms
and provisions contained in the invoices, purchase orders and other
contracts relating thereto, and the underlying transaction therefor is in
accordance with all applicable Laws; (c) the amounts shown on the
Borrower's books and records, with respect thereto are actually and
absolutely owing to the Borrower and are not contingent or subject to
reduction for any reason other than regular discounts, credits or
adjustments allowed by the Borrower in the ordinary course of its
business or adjustments which may arise as a result of regular audits
performed by any Governmental Authority; (d) no payments have been or
shall be made thereon except payments turned over to the Lender by the
Borrower; (e) all Account Debtors thereon have the capacity to contract;
and (f) the goods sold, leased or transferred or the services furnished
giving rise thereto are not subject to any Liens except the security
interest granted to the Lender by this Agreement and Permitted Liens.

<PAGE>
 .. COMPLIANCE WITH ELIGIBILITY STANDARDS.  With respect to those Accounts
which the Lender has deemed Eligible Billed Borrowing Base Receivables or
Eligible Unbilled Borrowing Base Receivables (a) there are no facts,
events or occurrences known to the Borrower which in any way impair the
validity, collectibility or enforceability thereof or tend to reduce the
amount payable thereunder; and (b) there are no proceedings or actions
known to the Borrower which are threatened or pending against any Account
Debtor which might result in any material adverse change in the Borrowing
Base.

 ..  CLAIMS AND INVESTIGATIONS.  There exist no pending or to the best of
the Borrower's knowledge threatened claims, investigations (whether
formal or informal), litigation, disputes, protests or other
controversies involving the Borrower or any Affiliate pertaining to or
arising out of any Government Contract which, if adversely determined,
would have a material adverse effect on the business, assets, operations
or condition, financial or otherwise, of the Borrower or any Affiliate.
Neither the Borrower nor any Affiliate has filed nor has any basis for
filing any claims or demands for payment against the United States or any
other party arising out of or in connection with any Government Contract,
other than progress billings, public vouchers, and invoices submitted in
the ordinary course of business.

 .. SUBORDINATED DEBT.  Except for the Existing Subordinated Debt, as of
the Closing Date there is no Subordinated Debt.   None of the documents
evidencing the Existing Subordinated Debt has been amended, supplemented,
restated or otherwise modified on or before the Closing Date except as
otherwise disclosed to the Lender in writing.  In addition, there does
not exist any default or any event which upon notice or lapse of time or
both would constitute a default under the terms of any of the loan
documents evidencing the Existing Subordinated Debt.

SECTION . SURVIVAL; UPDATES OF REPRESENTATIONS AND WARRANTIES.  All
representations and warranties contained in or made under or in
connection with this Agreement and the other Financing Documents shall
survive the Closing Date, the making of any advance under the Loans and
extension of credit made hereunder, and the incurring of any other
Obligations.


     ARTICLE

     CONDITIONS PRECEDENT

SECTION . CONDITIONS TO THE INITIAL ADVANCE AND INITIAL LETTER OF CREDIT
The making of the initial advance under the Loans and the issuance of the
initial Letter of Credit is subject to the fulfillment of the following
conditions precedent in a manner satisfactory to the Lender on or before
the Closing Date:

<PAGE>
 ..   GOOD STANDING ETC.  The Lender shall have received a certificate of
good standing for the Borrower certified by the Secretary of State, or
other appropriate Governmental Authority, of the state of incorporation
for the Borrower.  The Lender shall have received a Certificate of
Qualification to do business for the Borrower certified by the Secretary
of State or other Governmental Authority of each state in which the
Borrower conducts business.

 ..   CORPORATE PROCEEDINGS OF THE BORROWER.  The Lender shall have
received a certificate dated as of the Closing Date by the Secretary or
an Assistant Secretary of the Borrower covering:

(    true and complete copies of the Borrower's corporate charter,
bylaws, and all amendments thereto;

(    true and complete copies of the resolutions of its Board of
Directors authorizing (i) the execution, delivery and performance of the
Financing Documents to which the Borrower is a party, (ii) the borrowings
by the Borrower hereunder, and (iii) the granting of the Liens
contemplated by this Agreement and the Financing Documents to which the
Borrower is a party.

(    the incumbency, authority and signatures of the officers of the
Borrower authorized to sign this Agreement and the other Financing
Documents to which the Borrower is a party.

 ..   COLLATERAL DISCLOSURE LIST.  The Borrower shall have delivered the
Collateral Disclosure List required under the provisions of Section 3.3
(Collateral Disclosure List) hereof duly executed by a Responsible
Officer of the Borrower.

 ..   NOTES. The Lender shall have received the Term Note and the
Revolving Credit Note each, conforming to the requirements hereof and
executed by a Responsible Officer of the Borrower and attested by a duly
authorized representative of the Borrower.

 ..   FINANCING DOCUMENTS AND COLLATERAL.  The Borrower shall have
executed and delivered the Financing Documents to be executed by it, and
shall have delivered all  opinions, and other documents contemplated by
Article 3 hereof, all the foregoing to be in form and substance
satisfactory to the Lender.

<PAGE>
 ..   RECORDINGS AND FILINGS.  The Borrower shall have: (a) executed and
delivered all Financing Documents (including, without limitation, UCC-1
and UCC-3 statements) required to be filed, registered or recorded in
order to create, in favor of the Lender, a perfected Lien in the
Collateral (subject only to the Permitted Liens) in form and in
sufficient number for filing, registration, and recording in each office
in each jurisdiction in which such filings, registrations and
recordations are required, and (b) delivered such evidence as the Lender
may deem satisfactory that all necessary filing fees and all recording
and other similar fees, and all Taxes and other expenses related to such
filings, registrations and recordings will be or have been paid in full.

 ..   OPINION OF BORROWER'S COUNSEL.  The Lender shall have received the
favorable opinion of counsel for the Borrower addressed to the Lender in
form satisfactory to the Lender.

 ..   OTHER DOCUMENTS, ETC. The Lender shall have received such other
certificates, opinions, documents and instruments confirmatory of or
otherwise relating to the transactions contemplated hereby as may have
been reasonably requested by the Lender.

 ..   INSURANCE CERTIFICATE.  The Lender shall have received an insurance
certificate in accordance with the provisions of Section 6.1.8
(Insurance) and Section 6.1.9 (Insurance With Respect to Equipment and
Inventory) of this Agreement.

 ..   PAYMENT OF FEES.  The Lender shall have received payment of any Fees
due on or before the Closing Date.

 ..   ADDITIONAL MATTERS. All other documents and legal matters in
connection with the transactions contemplated by this Agreement and the
other Financing Documents shall be satisfactory in form and substance to
the Lender and its counsel.

 ..   OTHER FINANCING DOCUMENTS.  In addition to the Financing Documents
to be delivered by the Borrower, the Lender shall have received the
Financing Documents duly executed and delivered by Persons other than the
Borrower.

 ..   FIELD EXAMINATION.  The Lender shall have completed a field
examination of the Borrower' business, operations and income, the results
of which audit shall in the Lender's reasonable discretion show that the
Borrower is not in violation of any of the material terms of this
Agreement.

SECTION ..     CONDITIONS TO ALL EXTENSIONS OF CREDIT.  The making of all
advances under the Loans and the issuance of all Letters of Credit is
subject to the fulfillment of the following conditions precedent in a
manner satisfactory to the Lender:

 ..   COMPLIANCE.  The Borrower shall have complied and shall then be in
compliance with all terms, covenants, conditions and provisions of this
Agreement and the other Financing Documents which are binding upon them.

<PAGE>
 ..   BORROWING BASE.  The Borrower shall have furnished all Borrowing
Base Reports required by Section 2.1.4 (Borrowing Base Report) of this
Agreement, there shall exist no Borrowing Base Deficiency, and as
evidence thereof, the Borrower shall have furnished to the Lender such
reports, schedules, certificates, records and other papers as may be
requested by the Lender.

 ..   DEFAULT.  There shall exist no Event of Default or Default
hereunder.

 ..   REPRESENTATIONS AND WARRANTIES.  The representations and warranties
of the Borrower contained among the provisions of this Agreement shall be
true and with the same effect as though such representations and
warranties had been made at the time of the making of each of advance
under the Loans or the issuance of each Letter of Credit, except that the
representation and warranty pertaining to balance sheets, financial
statements and other financial condition information or data shall refer
to the latest balance sheets, financial statements, and financial
condition information and data furnished to the Lender pursuant to the
provisions of this Agreement.

 ..   ADVERSE CHANGE.  No adverse change shall have occurred in the
financial condition of the Borrower which would, in the good faith
judgment of the Lender, materially impair the ability of the Borrower to
pay or perform any of the Obligations.

 ..   LEGAL MATTERS.  All legal documents incident to each advance under
the Loans and each of the Letters of Credit shall be reasonably
satisfactory to counsel for the Lender.


     ARTICLE

     COVENANTS OF THE BORROWER

SECTION . AFFIRMATIVE COVENANTS.  So long as any of the Obligations (the
Commitments therefor) shall be outstanding hereunder, the Borrower agrees
with the Lender as follows:

 ..   FINANCIAL STATEMENTS.  The Borrower shall furnish to the Lender:

<PAGE>
(    Annual Statements and Certificates.  The Borrower shall furnish to
the Lender as soon as available, but in no event more than ninety (90)
days after the close of the Borrower's fiscal years, (i) a copy of the
annual financial statement in reasonable detail satisfactory to the
Lender relating to the Borrower and its Subsidiaries, prepared in
accordance with GAAP and examined and certified by independent certified
public accountants satisfactory to the Lender, which financial statement
shall include a consolidated balance sheet of the Borrower and its
Subsidiaries as of the end of such fiscal year and consolidated
statements of income, cash flows and changes in shareholders equity of
the Borrower and its Subsidiaries for such fiscal year, (ii) a detailed
computation of each financial covenant in this Agreement which is
applicable for the period reported, and a cash flow projection report on
a quarterly basis along with projected income statements, each prepared
by a Responsible Officer of the Borrower in a format acceptable to the
Lender and (iii) a management letter in the form prepared by the
independent certified public accountants.

(    Annual Opinion of Accountant.  The Borrower shall furnish to the
Lender as soon as available, but in no event more than ninety (90) days
after the close of the Borrower's fiscal years, a letter or opinion of
the accountant who examined and certified the annual financial statement
relating to the Borrower and its Subsidiaries stating whether anything in
such accountant's examination has revealed the occurrence of a Default or
an Event of Default hereunder, and, if so, stating the facts with respect
thereto.

(    Quarterly Statements and Certificates.  The Borrower shall furnish
to the Lender as soon as available, but in no event more than forty-five
(45) days after the close of the Borrower's fiscal quarters, consolidated
balance sheets of the Borrower and its Subsidiaries as of the close of
such period, consolidated income, cash flows and changes in shareholders
equity statements for such period, and a detailed computation of each
financial covenant in this Agreement which is applicable for the period
reported, all as prepared and certified by a Responsible Officer of the
Borrower and accompanied by a certificate of that officer stating whether
any event has occurred which constitutes a Default or an Event of Default
hereunder (including, but not limited to, any default under any
Indebtedness of the Borrower or any Subsidiary), and, if so, stating the
facts with respect thereto.

(  MONTHLY REPORTS.  The Borrower shall furnish to the Lender within
thirty (30) days after the end of each fiscal month, a report containing
the following information:

(    a detailed aging schedule of all Receivables by Account Debtor, in
such detail, and accompanied by such supporting information, as the
Lender may from time to time reasonably request;

(     a backlog report in such detail, and accompanied by such supporting
information, as the Lender may from time to time reasonably request;

                    (    a detailed aging of all accounts payable by
supplier, in such detail, and accompanied by such supporting information,
as the Lender may from time to time reasonably request; and

                         (  such other information as the Lender may
reasonably request.

<PAGE>
(    ADDITIONAL REPORTS AND INFORMATION.  The Borrower shall furnish to
the Lender promptly, such additional information, reports or statements
as the Lender may from time to time reasonably request.

 ..   REPORTS TO SEC AND TO STOCKHOLDERS.  The Borrower will furnish to
the Lender, promptly upon the filing or making thereof, at least one (l)
copy of all financial statements, reports, notices and proxy statements
sent by the Borrower to its stockholders, and of all regular and other
reports filed by the Borrower with any securities exchange or with the
Securities and Exchange Commission.

 ..   RECORDKEEPING, RIGHTS OF INSPECTION, FIELD EXAMINATION, ETC.
(    The Borrower shall, and shall cause each of its Subsidiaries to,
maintain (i) a standard system of accounting in accordance with GAAP and
with the requirements of each applicable Governmental Authority, and (ii)
proper books of record and account in which full, true and correct
entries are made of all dealings and transactions in relation to its
properties, business and activities.

(    The Borrower shall, and shall cause each of its Subsidiaries to,
permit authorized representatives of the Lender to visit and inspect the
properties and the properties of the Borrower and its Subsidiaries, to
review, audit, check and inspect the Collateral at any reasonable time
with notice, to review, audit, check and inspect the Borrower's other
books of record at any reasonable time with notice and to make abstracts
and photocopies thereof, and to discuss the affairs, finances and
accounts of the Borrower and its Subsidiaries, with the officers,
directors, employees and other representatives of the Borrower and its
Subsidiaries and their respective accountants, all at such times during
normal business hours and other reasonable times and as often as the
Lender may reasonably request.

(    The Borrower hereby agrees that the Lender may have access to all
accountants and auditors employed by the Borrower and its Subsidiaries at
any time during the term of this Agreement and that such accountants and
auditors will be authorized to meet with the Lender and the Borrower upon
request of the Lender and exhibit and deliver to the Lender copies of any
and all of the financial statements, trial balances, management letters,
or other accounting records of any nature of the Borrower and its
Subsidiaries in the accountant's or auditor's possession, and to disclose
to the Lender any information they may have concerning the financial
status and business operations of the Borrower's and its Subsidiaries.

(     Any and all actual costs and expenses incurred by, or on behalf of,
the Lender in connection with the conduct of any of the foregoing shall
be part of the Enforcement Costs and shall be payable to the Lender upon
demand. The Borrower acknowledges and agrees that such expenses may
include, but shall not be limited to, any and all out-of-pocket costs and
expenses of the Lender's employees and agents in, and when, traveling to
the Borrower's facilities.
<PAGE>
 ..   CORPORATE EXISTENCE.  The Borrower shall maintain its corporate
existence in good standing in the jurisdiction in which it is
incorporated and in each other jurisdiction where it is required to
register or qualify to do business if the failure to do so in such other
jurisdiction might have a material adverse effect on the ability of the
Borrower to perform the Obligations, on the conduct of the Borrower's
operations, on the Borrower's financial condition, or on the value of, or
the ability of the Lender to realize upon, the Collateral.

 ..   COMPLIANCE WITH LAWS.  The Borrower shall comply with all applicable
Laws and observe the valid requirements of Governmental Authorities, the
noncompliance with or the nonobservance of which might have a material
adverse effect on the ability of the Borrower to perform the Obligations,
on the conduct of the Borrower's operations, on the Borrower's financial
condition, or on the value of, or the ability of the Lender to realize
upon, the Collateral.

 ..   PRESERVATION OF PROPERTIES..  The Borrower will at all times (a)
maintain, preserve, protect and keep its properties, whether owned or
leased, in good operating condition, working order and repair (ordinary
wear and tear excepted), and from time to time will make all proper
repairs, maintenance, replacements, additions and improvements thereto
needed to maintain such properties in good operating condition, working
order and repair, and (b) do or cause to be done all things necessary to
preserve and to keep in full force and effect its material franchises,
leases of real and personal property, trade names, patents, trademarks
and permits which are necessary for the orderly continuance of its
business.

 ..   LINE OF BUSINESS.  The Borrower will continue to engage
substantially only in its current lines of business and ancillary
businesses, including, but not limited to, the provision of professional
and technical services, consisting principally of systems engineering,
software development, and high performance systems development.

 ..   INSURANCE. The Borrower will at all times maintain with A-rated
insurance companies such insurance as is required by applicable Laws and
such other insurance, in such amounts, of such types and against such
risks, hazards, liabilities, casualties and contingencies as are usually
insured against in the same geographic areas by business entities engaged
in the same or similar business.  Without limiting the generality of the
foregoing, the Borrower will keep adequately insured all of its property
against loss or damage resulting from fire or other risks insured against
by extended coverage and maintain public liability insurance against
claims for personal injury, death or property damage occurring upon, in
or about any properties occupied or controlled by it, or arising in any
manner out of the businesses carried on by it, all in such amounts not
less than comparable businesses in the same geographic area.  The
Borrower shall deliver to the Lender on the Closing Date (and thereafter
on each date there is a material change in the insurance coverage) a
certificate of a Responsible Officer of the Borrower containing a
detailed list of the insurance then in effect and stating the names of
the insurance companies, the types, the amounts and rates of the
insurance, dates of the expiration thereof and the properties and risks
covered thereby.
<PAGE>
 ..   TAXES..  Except to the extent that the validity or amount thereof is
being contested in good faith and by appropriate proceedings, the
Borrower will pay and discharge all Taxes prior to the date when any
interest or penalty would accrue for the nonpayment thereof.  The
Borrower shall furnish to the Lender at such times as the Lender may
require proof satisfactory to the Lender of the making of payments or
deposits required by applicable Laws including, without limitation,
payments or deposits with respect to amounts withheld by the Borrower
from wages and salaries of employees and amounts contributed by the
Borrower on account of federal and other income or wage taxes and amounts
due under the Federal Insurance Contributions Act, as amended.

 ..   ERISA.  The Borrower will, and will cause each of its Subsidiaries
and Affiliates to, comply with the funding requirements of ERISA with
respect to employee pension benefit plans for its respective employees.
The Borrower will not permit with respect to any employee benefit plan or
plans covered by Title IV of ERISA (a) any prohibited transaction or
transactions under ERISA or the Internal Revenue Code, which results, or
may result, in any material liability of the Borrower and its
Subsidiaries and Affiliates, or (b) any Reportable Event if, upon
termination of the plan or plans with respect to which one or more such
Reportable Events shall have occurred, there is or would be any material
liability of the Borrower and its Subsidiaries and Affiliates to the
PBGC.  Upon the Lender's request, the Borrower will deliver to the Lender
a copy of the most recent actuarial report, financial statements and
annual report completed with respect to any "defined benefit plan", as
defined in ERISA.

 ..   NOTIFICATION OF EVENTS OF DEFAULT AND ADVERSE DEVELOPMENTS.  The
Borrower shall promptly notify the Lender upon obtaining knowledge of the
occurrence of:

(    any Event of Default;

(    any Default;

(    any litigation instituted or threatened against the Borrower or its
Subsidiaries and of the entry of any judgment or Lien against any of the
assets or properties of the Borrower or any Subsidiary where the claims
against the Borrower or Subsidiary exceed Five Hundred Thousand Dollars
($500,000) and are not covered by insurance;

(    any event, development or circumstance whereby the financial
statements furnished hereunder fail in any material respect to present
fairly, in accordance with GAAP, the financial condition and operational
results of the Borrower or its Subsidiaries;

<PAGE>
(     any termination for convenience on any Government Contract, any
default under any Government Contract or any event which if not corrected
could have a material adverse effect on the business, assets, operations
or condition, financial or otherwise, of the Borrower or any Affiliate;

(    any judicial, administrative or arbitral proceeding pending against
the Borrower or any of its Subsidiaries and any judicial or
administrative proceeding known by the Borrower to be threatened against
it or any of its Subsidiaries which, if adversely decided, could
materially adversely affect its financial condition or operations
(present or prospective);

(    the receipt by the Borrower or any Subsidiary of any notice, claim
or demand from any Governmental Authority which alleges that the Borrower
or any Subsidiary is in violation of any of the terms of, or has failed
to comply with any applicable Laws regulating its operation and business,
including, but not limited to, the Occupational Safety and Health Act and
the Environmental Protection Act; and

(    any other development in the business or affairs of the Borrower and
any of its Subsidiaries which may be materially adverse;

in each case describing in detail satisfactory to the Lender the nature
thereof and the action the Borrower proposes to take with respect
thereto.

 ..   HAZARDOUS MATERIALS; CONTAMINATION.  The Borrower agrees to:

(    give notice to the Lender immediately upon the Borrower's acquiring
knowledge of the presence of any Hazardous Materials on any property
owned or controlled by the Borrower or for which the Borrower is
responsible (provided that such notice shall not be required for
Hazardous Materials placed or stored on such property in accordance with
applicable Laws in the ordinary course (including, without limitation,
quantity)  of the Borrower's line of business expressly described in this
Agreement) or of any Hazardous Materials Contamination with a full
description thereof;

(    promptly comply with any Laws requiring the removal, treatment or
disposal of Hazardous Materials or Hazardous Materials Contamination and
upon request of the Lender or if any such actions are taken which are
other than in the normal course of its business, provide the Lender with
satisfactory evidence of such compliance;

(    provide the Lender, within thirty (30) days after a demand by the
Lender, with a bond, letter of credit or similar financial assurance
evidencing to the Lender's satisfaction that the necessary funds are
available to pay the cost of removing, treating, and disposing of such
Hazardous Materials or Hazardous Materials Contamination and discharging
any Lien which may be established as a result thereof on any property
owned or controlled by the Borrower or for which the Borrower is
responsible; and

<PAGE>
(    as part of the Obligations, defend, indemnify and hold harmless the
Lender and its agents, employees, trustees, successors and assigns from
any and all claims which may now or in the future (whether before or
after the termination of this Agreement) be asserted as a result of the
presence of any Hazardous Materials on any property owned or controlled
by the Borrower for which the Borrower is responsible for any Hazardous
Materials Contamination. The Borrower acknowledges and agrees that this
indemnification shall survive the termination of this Agreement and the
Commitments and the payment and performance of all of the other
Obligations.

 ..   DISCLOSURE OF SIGNIFICANT TRANSACTIONS.  The Borrower shall deliver
to the Lender a written notice describing in detail each transaction by
it involving the purchase, sale, lease, or other acquisition or loss or
casualty to or disposition of an interest in Fixed or Capital Assets
which exceeds One Million Dollars ($1,000,000.00), said notices to be
delivered to the Lender within thirty (30) days after the occurrence of
each such transaction.

 ..   TOTAL FUNDED DEBT TO EBITDA.  The Borrower will maintain, tested as
of the end of each of the Borrower's fiscal quarters, a ratio of Total
Funded Debt to EBITDA so that it is not more than 2.75 to 1.0.

 ..   OBLIGATIONS TO ACCOUNTS RECEIVABLES.  The Borrower will maintain,
tested as of the last day of each of the Borrower's fiscal quarters, a
ratio of (a) outstanding Obligations to (b) the sum of (i) Eligible
Billed Government Receivables (including any Eligible Billed Borrowing
Base Receivables where the Account Debtor is a Governmental Authority,
and the Borrower is a subcontractor and the primary contractor is a
Person which the Lender in its sole, bur reasonable discretion classifies
as a major government contractor), plus (ii) gross unbilled Receivables
that are determined by the Lender in its sole but reasonable discretion
to be billable based on the Lender's most recent field exam (less
unbilled Receivables arising from final billings, retainages, work in
process and rate variances) so that it is not greater than 1.0 to 1.0.

 ..   FIXED CHARGE COVERAGE RATIO.  The Borrower will at all times
maintain, tested as of the last day of each of the Borrower's fiscal
quarters for the four (4) quarter period ending on that date, a Fixed
Charge Coverage Ratio of not less than 1.25 to 1.0.

 ..   EBIT RATIO. The Borrower will maintain a ratio of EBIT to interest
expense, tested as of the last day of each of the Borrower's fiscal
quarters of not less than 2.25 to 1.0

 .. PROFITABILITY. The Borrower and its Subsidiaries will have a minimum
net profit, tested as of the last day of each of the Borrower's fiscal
year end of not less than One Dollar ($1.00).

<PAGE>
 ..   COLLECTION OF RECEIVABLES.  Except for those Receivables being
directly deposited with First Union for the benefit of the Lender
pursuant to this Agreement, until the occurrence of any Default
hereunder, the Borrower shall at its own expense have the privilege for
the account of, and in trust for, the Lender of collecting its
Receivables and receiving in respect thereto all Items of Payment and
shall otherwise completely service all of the Receivables including (a)
the billing, posting and maintaining of complete records applicable
thereto, (b) the taking of such action with respect to the Receivables as
the Lender may reasonably request or in the absence of such request, as
the Borrower may deem advisable; and (c) the granting, in the ordinary
course of business, to any Account Debtor, any rebate, refund or
adjustment to which the Account Debtor may be lawfully entitled, and may
accept, in connection therewith, the return of goods, the sale or lease
of which shall have given rise to a Receivable and may take such other
actions relating to the settling of any Account Debtor's claim as may be
commercially reasonable.  The Lender may, at its option, at any time or
from time to time after and during the continuance of a Default
hereunder, revoke the collection privilege given in this Agreement to the
Borrower by either giving notice of its assignment of, and lien on the
Collateral to the Account Debtors or giving notice of such revocation to
the Borrower.  Neither the Lender nor First Union shall have any duty to,
and the Borrower hereby releases the Lender and First Union from all
claims of loss or damage caused by the delay or failure to collect or
enforce any of the Receivables or to preserve any rights against any
other party with an interest in the Collateral.

 ..   ASSIGNMENTS OF RECEIVABLES.  Except with respect to Receivables to
which Section 6.1.21 applies, the Borrower will promptly, upon request,
execute and deliver to the Lender written assignments, in form and
content acceptable to the Lender, of specific Receivables or groups of
Receivables; provided, however, the Lien and/or security interest granted
to the Lender under this Agreement shall not be limited in any way to or
by the inclusion or exclusion of Receivables within such assignments.
Receivables so assigned shall secure payment of the Obligations and are
not sold to the Lender whether or not any assignment thereof, which is
separate from this Agreement, is in form absolute.

          ..   GOVERNMENT ACCOUNTS.  The Borrower will immediately notify
the Lender if any of the Receivables arise out of contracts with the
United States or with any other Governmental Authority having a term
exceeding six (6) months and a value exceeding $500,000, and execute any
instruments and take any steps required by the Lender in order that all
moneys due and to become due under such contracts shall be assigned to
the Lender and notice thereof given to the Governmental Authority under
the Federal Assignment of Claims Act or any other applicable Laws.  In
addition, the Lender may, with prior notice to the Borrower, discuss the
status of any Government Contract with the contracting officer
responsible for such contract, and the Borrower will cooperate with the
Lender and its agents in connection with such discussions.

<PAGE>
 ..   INVENTORY. With respect to the Inventory, the Borrower will at such
times as the Borrower has any Inventory:  (a) as soon as possible upon
demand by the Lender from time to time, prepare and deliver to the Lender
designations of Inventory specifying the Borrower's cost of Inventory,
the retail price thereof, and such other matters and information relating
to the Inventory as the Lender may reasonably request; (b) keep correct
and accurate records itemizing and describing the kind, type, quality and
quantity of Inventory, the Borrower's cost therefor and the selling price
thereof, all of which records shall be available to the officers,
employees or agents of the Lender upon demand for inspection and copying
thereof; (c) not store any of its Inventory with a bailee, warehouseman
or similar Person without the Lender's prior written consent, which
consent may be conditioned on, among other things, delivery by the
bailee, warehouseman or similar Person to the Lender of warehouse
receipts, in form acceptable to the Lender, in the name of the Lender
evidencing the storage of Inventory and the Lender's interests therein;
and (d) permit the Lender and its agents or representatives to inspect
and examine the Inventory and to check and test the same as to quality,
quantity, value and condition at any time or times hereafter during the
Borrower's usual business hours or at other reasonable times.  The
Borrower shall be permitted to sell its Inventory in the ordinary course
of its business until the occurrence of a Default.

 ..   INSURANCE WITH RESPECT TO EQUIPMENT AND INVENTORY. The Borrower will
(a) maintain hazard insurance with fire and extended coverage and naming
the Lender as an additional insured with loss payable to the Lender as
its respective interest may appear on the Equipment and Inventory in an
amount at least equal to the lesser of the amount of the outstanding
principal amount of the Obligations or the fair market value of the
Equipment and Inventory (but in any event sufficient to avoid any co-
insurance obligations) and with a specific endorsement to each such
insurance policy pursuant to which the insurer agrees to give the Lender
at least thirty (30) days written notice before any alteration or
cancellation of such insurance policy and that no act or default of the
Borrower shall affect the right of the Lender to recover under such
policy in the event of loss or damage; and (b) file with the Lender, upon
its request, a detailed list of the insurance then in effect and stating
the names of the insurance companies, the amounts and rates of the
insurance, dates of the expiration thereof and the properties and risks
covered thereby; and, within thirty (30) days after notice in writing
from the Lender.

 ..   MAINTENANCE OF THE COLLATERAL.  The Borrower will maintain the
Collateral in good working order, saving and excepting ordinary wear and
tear, and will not permit anything to be done to the Collateral which may
materially impair the value thereof.  The Lender, or an agent designated
by the Lender, shall be permitted to enter the premises of the Borrower
and examine, audit and inspect the Collateral at any reasonable time and
from time to time with reasonable notice prior to any Default. The Lender
agrees to act in a commercially reasonable manner when inspecting the
premises of the Borrower and when examining, auditing and/or inspecting
the Collateral.  The Lender shall not have any duty to, and the Borrower
hereby releases the Lender from all claims of loss or damage caused by
the delay or failure to collect or enforce any of the Receivables or to,
preserve any rights against any other party with an interest in the
Collateral.

<PAGE>
 ..   EQUIPMENT.  The Borrower shall (a) maintain all Equipment as
personalty, (b) not affix any Equipment to any real estate in such manner
as to become a fixture or part of such real estate, and (c) shall hold no
Equipment having an aggregate value in excess of Two Hundred Fifty
Thousand Dollars ($250,000) on a sale on approval basis. The Borrower
hereby declares its intent that, notwithstanding the means of attachment,
no goods of the Borrower hereafter attached to any realty shall be deemed
a fixture, which declaration shall be irrevocable, without the Lender's
consent, until all of the Obligations have been paid in full and all of
the Commitments have been terminated,

 ..   DEFENSE OF TITLE AND FURTHER ASSURANCES.  At its expense the
Borrower will defend the title to the Collateral (and any part thereof),
and promptly upon request execute, acknowledge and deliver any financing
statement, renewal, affidavit, deed, assignment, continuation statement,
security agreement, certificate or other document the Lender may
reasonably require in order to perfect, preserve, maintain, continue,
protect and/or extend the Lien or security interest granted to the Lender
under this Agreement, under any of the other Financing Documents and its
priority.  The Borrower will from time to time do whatever the Lender may
reasonably request by way of obtaining, executing, delivering, and/or
filing financing statements, landlords' or mortgagees' waivers, and other
notices and amendments and renewals thereof and the Borrower will take
any and all steps and observe such formalities as the Lender may
reasonably request, in order to create and maintain a valid Lien upon,
pledge of, or paramount security interest in, the Collateral, subject to
the Permitted Liens.  The Borrower shall pay to the Lender on demand all
taxes, costs and actual expenses incurred by the Lender in connection
with the preparation, execution, recording and filing of any such
document or instrument.  The Borrower shall keep the Collateral free of
all other Liens and rights of third parties, except Permitted Liens.  To
the extent that the proceeds of any of the Accounts or Receivables of the
Borrower are expected to become subject to the control of, or in the
possession of, a party other than the Borrower or the Lender, the
Borrower shall cause all such parties to execute and deliver on the
Closing Date security documents, financing statements or other documents
as requested by the Lender and as may be necessary to evidence and/or
perfect the security interest of the Lender in those proceeds.  The
Borrower agrees that a copy of a fully executed security agreement and/or
financing statement shall be sufficient to satisfy for all purposes the
requirements of a financing statement as set forth in Article 9 of the
applicable Uniform Commercial Code.

 ..   BUSINESS NAMES; LOCATIONS.  The Borrower will notify the Lender not
less than thirty (30) days prior to (a) any change in the name under
which the Borrower conducts its business,  (b) any change of the location
of the chief executive office of the Borrower, and (c) the opening of any
new place of business or the closing of any existing place of business,
and any change in the location of the places where the Collateral, or any
part thereof, or the books and records, or any part thereof, are kept.

<PAGE>
 ..   PROTECTION OF COLLATERAL.  The Borrower agrees that the Lender may
at any time take such steps as the Lender deems reasonably necessary to
protect the Lender's interest in, and to preserve the Collateral,
including, the hiring of such security guards or the placing of other
security protection measures as the Lender deems appropriate, may employ
and maintain at any of the Borrower's premises a custodian who shall have
full authority to do all acts necessary to protect the Lender's interests
in the Collateral and may lease warehouse facilities to which the Lender
may move all or any part of the Collateral to the extent commercially
reasonable.  The Borrower agrees to cooperate fully with the Lender's
efforts to preserve the Collateral and will take such actions to preserve
the Collateral as the Lender may reasonably direct.  All of the Lender's
expenses of preserving the Collateral, including any reasonable expenses
relating to the compensation and bonding of a custodian, shall be part of
the Enforcement Costs.

 ..   OPERATING ACCOUNTS.  The Borrower will at all times maintain its
primary operating accounts with First Union.

 ..   MANAGEMENT.  The Borrower will at all times keep C.E. Velez and
Gregg Wagner and other people of demonstrated competence in positions of
Senior Management and will notify the Lender of any changes in Senior
Management.  The Lender agrees that it will consent to the replacement of
any of person or persons listed above, provided, such person or persons
are promptly replaced by other persons of equal or greater demonstrated
competence.

SECTION . NEGATIVE COVENANTS.  So long as any of the Obligations (or
Commitments therefor) shall be outstanding hereunder, the Borrower agrees
with the Lender as follows:

 ..   CAPITAL STRUCTURE, MERGER, ACQUISITION OR SALE OF ASSETS.  (a)
Except as permitted in subsection (b) of this Section, the Borrower shall
not alter or amend its capital structure or authorize any additional
class of equity if as a result of such action the Borrower would own less
than fifty one percent (51%) of any Subsidiary, enter into any merger or
consolidation or amalgamation, windup or dissolve itself (or suffer any
liquidation or dissolution) (except for mergers of Subsidiaries into
existing Subsidiaries or the Borrower) or acquire all or substantially
all the assets of any Person, or sell, lease or otherwise dispose of any
of its assets (except for sales or other dispositions of assets made in
the ordinary course of the Borrower's business which do not, in the
Lender's sole, but reasonable discretion, have a material effect on the
operations of the Borrower, the value of the Collateral or change the
Borrower's present line of business).

(b)  The Borrower may request the Lender's consent to any  acquisition by
merger, stock purchase or asset purchase of all or substantially all the
assets of any Person or make any investments in any such Person (each an
"Acquisition" and collectively, the "Acquisitions") during the existence
of this Agreement and, PROVIDED, HOWEVER, that each of the following
conditions precedent are in the Lender's discretion satisfied:

<PAGE>
(i)  The Lender shall have received and reviewed the pro forma
projections of the Borrower (in form and detail satisfactory to the
Lender in its reasonable discretion) taking into effect the Acquisition,
which pro forma projections demonstrate the Borrower's continued
compliance with all of the material terms of this Agreement throughout
the term hereof, including, but not limited to, the financial covenants
set forth in Sections 6.14, 6.15, 6.16 and 6.17 hereof;

(ii) The Lender shall have received and reviewed a copy of the current
financial statement of the acquired Person (the "Target");

(iii)   The Lender shall have received and reviewed a written summary of
the proposed Acquisition;

(iv)   The aggregate amount of all Acquisitions does not exceed Five
Million Dollars ($5,000,000) (the "Acquisition Cap");

(v) The Lender shall have received a written certification, in form and
substance satisfactory to the Lender in its reasonable discretion, from a
Responsible Officer of the Borrower that:

(aa) the Target is a going concern;

(bb) the Target is in the same line of business as the Borrower;

(cc) after completion of the Acquisition, the Borrower  or any Subsidiary
will own at all times not less than fifty-one percent (51%) of the
Target;

(dd) after giving affect to the Acquisition, the Borrower shall not be in
default under this Agreement or any of the Financing Documents;

(ee) the Borrower does not directly or indirectly assume any Indebtedness
of the Target, other than current accounts payable arising in the
ordinary course of the Target's business;

(ff) the Target is not subject to any litigation, which, if adversely
determined, could when taken as a whole,  have a material adverse effect
on the financial condition of the Target; and

(gg) the Target is not subject to contingent liabilities, in an amount
which could, when taken as a whole,  have a material adverse effect on
the financial condition of the Target.

<PAGE>
(c) The Bank will within ten (10) Business Days after receipt of all of
the items listed above will give the Borrower written notice if it
disapproves of such Acquisition.  (Any Acquisition not disapproved by the
Lender within such ten (10) Business Day period, being called a
"Permitted Acquisition" and collectively, the "Permitted Acquisitions").

(d)  For purposes hereof, all consideration incurred in connection with
each Permitted Acquisition including, but not limited to non-compete
agreements and the value of assets, stock, warrants, or other property
transferred, pledged or given in connection with any Permitted
Acquisition shall be included in the calculation of the Acquisition Cap.

               (e) Upon completion of each Permitted Acquisition, the
Borrower shall at the Lender's request and at the Borrower's expense,
cause each Target to be added as a co-obligor on this Agreement and the
Financing Documents.  Notwithstanding anything set forth herein to the
contrary and without affecting the Lender's right to add any Target as a
co-obligor on this Agreement and the Financing Documents, the assets of a
Target will not be included in the calculation of the Borrowing Base
until such time as such assets are approved by the Lender, which approval
may include, without limitation, the completion of a satisfactory field
examination of such assets.  At the time such assets are included in the
Borrowing Base, if at all, the Lender will thereafter not include the
cost of that Permitted Acquisition in calculating the Acquisition Cap.

 ..   SUBSIDIARIES.  Except as otherwise permitted herein, the Borrower
will not create or acquire any Subsidiaries other than the Subsidiaries
identified on the Collateral Disclosure List.

 ..   ISSUANCE OF STOCK.   Other than those in existence as of the date
hereof, the Borrower will not issue, or grant any option or right to
purchase, any of its capital stock, other than (i) pursuant to any
existing employee stock or 401K plans (ii) pursuant to the Borrower's
internal market for stock, (iii) in connection with any Permitted
Acquisition, (iv) as part of any sale to any third party investors, or
(v) as permitted under the Subordinated Debt Loan Documents. In all such
cases, the issuance of such stock will not cause the Borrower to own less
than fifty one percent (51%) of any Subsidiary.

<PAGE>
 ..   PURCHASE OR REDEMPTION OF SECURITIES, DIVIDEND RESTRICTIONS. Except
(i) in connection with the repurchase of up to One Million Eight Hundred
Thousand Dollars ($1,800,000) of its common stock, including any purchase
in connection with a tender offer, (ii)  in connection with any Permitted
Acquisition, or (iii) pursuant to the Borrower's internal market for
stock, the Borrower will not purchase, redeem or otherwise acquire any
shares of its capital stock or warrants now or hereafter outstanding,
declare or pay any dividends thereon (other than stock dividends or stock
splits), apply any of its property or assets to the purchase, redemption
or other retirement of, set apart any sum for the payment of any
dividends on, or for the purchase, redemption, or other retirement of,
make any distribution by reduction of capital or otherwise in respect of,
any shares of any class of capital stock of the Borrower or any
Subsidiary, or any warrants, permit any Subsidiary to purchase or acquire
any shares of any class of capital stock of, or warrants issued by, the
Borrower or any Subsidiary, make any distribution to stockholders or set
aside any funds for any such purpose, and not prepay, purchase or redeem
any Indebtedness for Borrowed Money other than the Obligations and those
prepayments required under the Subordinated Debt Loan Documents.

 ..   INDEBTEDNESS.  The Borrower will not, and will not permit any
Subsidiary to, create, incur, assume or suffer to exist any Indebtedness
for Borrowed Money, except:

()   the Obligations;

()   current accounts payable arising in the ordinary course of the
Borrower's business;

          ()   Indebtedness secured by Permitted Liens;

          ()   Subordinated Indebtedness, provided: (i) such Subordinated
Indebtedness is unsecured (ii) the aggregate amount of such Subordinated
Indebtedness does not exceed Five Million Dollars ($5,000,000) in the
aggregate at any time; and (iii) prior to incurring such additional
Indebtedness the Borrower shall have provided the Lender and the Lender
shall have reviewed and approved pro-forma projections to demonstrate the
Borrower's compliance with the financial covenants set forth in Sections
6.14, 6.15, 6.16 and 6.17 hereof after said Subordinated Indebtedness is
incurred;

()   Indebtedness incurred in connection with any Permitted Acquisition
and permitted pursuant to Section 6.2.1(b)(iv)(ee);

()   Indebtedness of the Borrower and its Subsidiaries existing on the
date hereof and reflected on the financial statements furnished pursuant
to Section 4.1.11 (Financial Condition); and

()   Indebtedness of the Borrower and/or the Subsidiaries set forth in
EXHIBIT "D".

In addition, the Borrower will not use the proceeds of the Loan to pay
any of the outstanding principal on the Subordinated Indebtedness
described in Section 6.2.4(d) above.

<PAGE>
 ..   INVESTMENTS, LOANS AND OTHER TRANSACTIONS. Except as permitted in
Section 6.2.1 of this Agreement, without the prior written consent of the
Lender, the Borrower will not, and will not permit any of its
Subsidiaries to, (a) make, assume, acquire or continue to hold any
investment in any real property (unless used in connection with its
business and treated as a Fixed or Capital Asset of the Borrower or the
Subsidiary) or any Person, whether by stock purchase, capital
contribution, acquisition of indebtedness of such Person or otherwise
(including, without limitation, investments in any joint venture or
partnership, other than those investments in joint ventures or
partnerships in existence as of the date hereof or those joint ventures
or partnerships formed in the ordinary course of business in connection
with obtaining contracts where a major corporation or a Governmental
Authority is the primary contractor), (b) guaranty or otherwise become
contingently liable for the indebtedness or obligations of any Person,
other than bid bonds of the Borrower in connection with contracts of its
Subsidiaries for purposes of obtaining contracts where a major
corporation or a Governmental Authority is the primary contractor, or (c)
make any loans or advances, or otherwise extend credit to any Person,
except:

()   any advance to an officer of the Borrower or of any Subsidiary for
relocation expenses, travel or other business expenses in the ordinary
course of business, provided that the aggregate amount of all such
advances to all officers of the Borrower and its Subsidiaries (taken as a
whole) outstanding at any time shall not exceed the sum of those in
existence or committed to as of the date hereof, in an aggregate amount
not to exceed $1,000,000;

()   the endorsement of negotiable instruments for deposit or collection
or similar transactions in the ordinary course of business;

()   any investment in Cash Equivalents;

()   credit extended to customers in the ordinary course of business and
consistent with the customary industry or historical practice of the
Borrower and its Subsidiaries; and

()   loans to employees and officers of the Borrower for the purpose of
exercising options to purchase stock in the Borrower and for the payment
of income taxes of such employees and officers which are directly
attributable to the exercise of such options.

 ..   CAPITAL EXPENDITURES.  The Borrower will not, and will not permit
any Subsidiary to, directly or indirectly (by way of the acquisition of
the securities of a Person or otherwise), make any Capital Expenditures
in the aggregate for the Borrower and its Subsidiaries (taken as a whole)
in any fiscal year exceeding Two Million Five Hundred Thousand Dollars
($2,500,000).

<PAGE>
 ..   STOCK OF SUBSIDIARIES.  The Borrower will not sell or otherwise
dispose of any shares of capital stock of any Subsidiary (except in
connection with a merger or consolidation of a Wholly Owned Subsidiary
into the Borrower or another Wholly Owned Subsidiary or with the
dissolution of any Subsidiary) or permit any Subsidiary to issue any
additional shares of its capital stock except PRO RATA to its
stockholder; if the result of such sale, disposition or issuance of
additional shares of stock would cause the Borrower to own less than
fifty one percent (51%) of such Subsidiary.

 ..   SUBORDINATED INDEBTEDNESS.  The Borrower will not, and will not
permit any Subsidiary to make:

()   any unscheduled payment of principal of, or interest on, any of the
Subordinated Indebtedness, including, without limitation, the
Subordinated Debt, if a Default then exists hereunder or would result
from such payment;

()   any payment of the principal or interest due on the Subordinated
Indebtedness as a result of acceleration thereunder or a mandatory
repurchase thereunder;

()   any amendment or modification of or supplement to the documents
evidencing or securing the Subordinated Indebtedness if the effect of
such amendment or modification would be to (i) reduce the maturity of any
payment of principal of or interest on the Subordinated Indebtedness,
(ii) increase the principal amount of or rate of interest on the
Subordinated Indebtedness, (iii) increase any fee payable to the holder
or holders of any Subordinated Indebtedness, (iv) cause the Subordinated
Indebtedness to become secured or collateralized in any manner
whatsoever, or (v) create additional covenants, events of default or
alter the terms of the subordination set forth in any of the Subordinated
Debt Loan Documents;

()   payment of principal or interest on the Subordinated Indebtedness
other than when due (without giving effect to any acceleration of
maturity or mandatory repurchase); and

()   use of the proceeds of the Loan to pay any principal on any of the
Subordinated Indebtedness.

Notwithstanding anything contained herein to the contrary, the Borrower
may after prior written notice to the Lender prepay all or a portion of
the Subordinated Indebtedness, provided that the Borrower will at the
time of such prepayment either replace that portion of the Subordinated
Indebtedness with an equity investment in the Borrower or any Subsidiary
of a like amount or substitute Subordinated Indebtedness of a like amount
at a cost to the Borrower and its Subsidiaries which is less than the
cost of maintaining the then existing Subordinated Indebtedness being
prepaid.

 ..   LIENS.  The Borrower will not create, incur, assume or suffer to
exist any Lien upon the Collateral,  whether now owned or hereafter
acquired, except for Liens securing the Obligations and Permitted Liens.

<PAGE>
 ..   OTHER BUSINESSES.  The Borrower will not engage directly or
indirectly in any business other than its current line of business
described elsewhere in this Agreement.

 ..   ERISA COMPLIANCE.  Neither the Borrower nor any Commonly Controlled
Entity shall:  (a) engage in or permit any "prohibited transaction" (as
defined in ERISA); (b) cause any "accumulated funding deficiency" as
defined in ERISA and/or the Internal Revenue Code; (c) terminate any
pension plan in a manner which could result in the imposition of a lien
on the property of the Borrower pursuant to ERISA; (d) terminate or
consent to the termination of any Multiemployer Plan; or (e) incur a
complete or partial withdrawal with respect to any Multiemployer Plan.

 ..   PROHIBITION ON HAZARDOUS MATERIALS.  The Borrower shall not place,
manufacture or store or permit to be placed, manufactured or stored any
Hazardous Materials on any property owned or controlled by the Borrower
or for which the Borrower is responsible other than Hazardous Materials
placed or stored on such property in accordance with applicable Laws in
the ordinary course of the Borrower's business expressly described in
this Agreement.

 ..   METHOD OF ACCOUNTING.  The Borrower shall not change the method of
accounting employed in the preparation of the financial statements
furnished prior to the date of this Agreement to the Lender, unless
required to conform to GAAP and on the condition that the Borrower's
accountants shall furnish such information as the Lender may request to
reconcile the changes with the Borrower's prior financial statements.

 ..   COMPENSATION.  Neither the Borrower nor any of its Subsidiaries will
pay any bonuses, fees, compensation, commissions, salaries, drawing
accounts, or other payments (cash and non-cash), whether direct or
indirect, to any stockholders of the Borrower or its Subsidiaries, or any
Affiliate of the Borrower or its Subsidiaries, other than reasonable
bonuses, compensation for actual services rendered by stockholders in
their capacity as officers or employees of the Borrower or any Subsidiary
and pursuant to any non-compete or other agreements in existence as of
the date hereof which provide for certain payments to officers or
employees of the Borrower or its Subsidiaries, or entered into in
connection with any Permitted Acquisition.

 ..   TRANSFER OF COLLATERAL.  The Borrower will not transfer, or permit
the transfer, to another location of any of the Collateral or the books
and records related to any of the Collateral, without providing the
Lender with thirty (30) days prior written notice thereof, along with
such financing statements or other documents as the Lender deems
necessary in its sole but reasonable discretion to maintain its lien on
the Collateral.

<PAGE>
 ..   DISPOSITION OF COLLATERAL.  The Borrower will not sell, transfer,
assign, convey, lease, assign, transfer or otherwise dispose of the
Collateral, except, prior to an Event of Default, dispositions expressly
permitted elsewhere in this Agreement, the sale of Inventory in the
ordinary course of business, and the sale of unnecessary or obsolete
Equipment, but only if the proceeds of the sale of such Equipment are (a)
used to purchase similar Equipment to replace the unnecessary or obsolete
Equipment or (b) immediately turned over to the Lender for application to
the Obligations.



     ARTICLE

     DEFAULT AND RIGHTS AND REMEDIES

SECTION . EVENTS OF DEFAULT.  The occurrence of any one or more of the
following events shall constitute  "Events of Default" under the
provisions of this Agreement:

 ..   FAILURE TO PAY. The failure of the Borrower to pay any of the
Obligations as and when due and payable in accordance with the provisions
of this Agreement, the Notes and/or any of the other Financing Documents;

 ..   BREACH OF REPRESENTATIONS AND WARRANTIES.  Any representation or
warranty made in this Agreement or in any report, statement, schedule,
certificate, opinion (including any opinion of counsel for the Borrower),
financial statement or other document furnished in connection with this
Agreement, any of the other Financing Documents, or the Obligations,
shall prove to have been false or misleading when made (or, if
applicable, when reaffirmed) in any material respect and the Borrower
shall have failed to cure said false or misleading representations or
warranties within thirty (30) days after written notice by the Lender to
the Borrower.

 ..   FAILURE TO COMPLY WITH COVENANTS.  The failure of the Borrower to
perform, observe or comply with any covenant, condition or agreement
contained in this Agreement Sections 6.1 hereof or in Section 6.2 of this
Agreement and such failure shall continue for a period of thirty (30)
days after written notice by the Lender to the Borrower.

 ..   OTHER COVENANTS.  The failure of the Borrower to perform, observe or
comply with any covenant, condition or agreement contained in this
Agreement, other than those set forth in Sections 7.1.2 or  7.1.3 above,
which default shall remain unremedied for thirty (30) days after written
notice thereof to the Borrower by the Lender.

 ..   DEFAULT UNDER OTHER FINANCING DOCUMENTS OR OBLIGATIONS.  A default
shall occur under any of the other Financing Documents or under any other
Obligations, and such  default is not cured within any applicable grace
period provided therein.

<PAGE>
 ..   RECEIVER; BANKRUPTCY.  The Borrower shall (a) apply for or consent
to the appointment of a receiver, trustee or liquidator of itself or any
of its property, (b) admit in writing its inability to pay its debts as
they mature, (c) make a general assignment for the benefit of creditors,
(d) be adjudicated a bankrupt or insolvent, (e) file a voluntary petition
in bankruptcy or a petition or an answer seeking or consenting to
reorganization or an arrangement with creditors or to take advantage of
any bankruptcy, reorganization, insolvency, readjustment of debt,
dissolution or liquidation law or statute, or an answer admitting the
material allegations of a petition filed against it in any proceeding
under any such law, or take corporate action for the purposes of
effecting any of the foregoing, or (f) by any act indicate its consent
to, approval of or acquiescence in any such proceeding or the appointment
of any receiver of or trustee for any of its property, or suffer any such
receivership, trusteeship or proceeding to continue undischarged for a
period of sixty (60) days, or (g) by any act indicate its consent to,
approval of or acquiescence in any order, judgment or decree by any court
of competent jurisdiction or any Governmental Authority enjoining or
otherwise prohibiting the operation of a material portion of the
Borrower's business or the use or disposition of a material portion of
the Borrower's assets.

 ..   INVOLUNTARY BANKRUPTCY, ETC.  (a) An order for relief shall be
entered in any involuntary case brought against the Borrower under the
Bankruptcy Code, or (b) any such case shall be commenced against the
Borrower and shall not be dismissed within sixty (60) days after the
filing of the petition, or (c) an order, judgment or decree under any
other Law is entered by any court of competent jurisdiction or by any
other Governmental Authority on the application of a Governmental
Authority or of a Person other than the Borrower (i) adjudicating the
Borrower bankrupt or insolvent, or (ii) appointing a receiver, trustee or
liquidator of the Borrower, or of a material portion of the Borrower's
assets, or (iii) enjoining, prohibiting or otherwise limiting the
operation of a material portion of the Borrower's business or the use or
disposition of a material portion of the Borrower's assets, and such
order, judgment or decree continues unstayed and in effect for a period
of thirty (30) days from the date entered.

 ..   JUDGMENT.  Unless adequately insured in the opinion of the Lender,
the entry of a final judgment for the payment of money involving more
than $500,000 against the Borrower, and the failure by the Borrower to
discharge the same, or cause it to be discharged, within thirty (30) days
from the date of the order, decree or process under which or pursuant to
which such judgment was entered, or to secure a stay of execution pending
appeal of such judgment.

 ..   EXECUTION; ATTACHMENT.  Any execution or attachment shall be levied
against the Collateral, or any part thereof, and such execution or
attachment shall not be set aside, discharged or stayed within thirty
(30) days after the same shall have been levied.

 ..   DEFAULT UNDER OTHER BORROWINGS.  Default shall be made with respect
to any Indebtedness for Borrowed Money (other than the Loans, but
including any Subordinated Indebtedness) if the effect of such default is
to accelerate the maturity of such evidence of the Indebtedness for
Borrowed Money or to permit the holder or obligee thereof or other party
thereto to cause any indebtedness to become due prior to its stated
maturity.
<PAGE>
 ..   LIQUIDATION, TERMINATION, DISSOLUTION, CHANGE IN MANAGEMENT, ETC.
If the Borrower shall liquidate, dissolve or terminate its existence or
shall suspend or terminate a substantial portion of its business
operations, without the prior written consent of the Lender or if  C.E.
Velez at any time owns less than forty percent (40%) of the Borrower or
if on a combined basis  C.E. Velez, the Borrower's 401K plan, and  the
Borrower's stock ownership plan fail at any time to maintain a
controlling interest in the Borrower.

Notwithstanding anything contained in Sections 7.1.1 through 7.1.11
hereof to the contrary, the Borrower shall only be entitled to one (1)
grace and/or cure period for any Event of Default during any period of
three hundred sixty five (365) consecutive days.

SECTION . REMEDIES.  Upon the occurrence of any Event of Default, the
Lender may at any time thereafter exercise any one or more of the
following rights, powers or remedies:

 ..   ACCELERATION.  The Lender may declare the Obligations to be
immediately due and payable, notwithstanding anything contained in this
Agreement or in any of the other Financing Documents to the contrary,
without presentment, demand, protest, notice of protest or of dishonor,
or other notice of any kind, all of which the Borrower hereby waives.

 ..   FURTHER ADVANCES.  The Lender may from time to time without notice
to the Borrower suspend, terminate or limit any further loans or other
extensions of credit under this Agreement and under any of the other
Financing Documents. Further, upon the occurrence of an Event of Default
or Default specified in Sections 7.1.6 (Receiver; Bankruptcy) or 7.1.7
(Involuntary Bankruptcy, etc.) above, the Revolving Credit Commitment and
any agreement in any of the Financing Documents to provide additional
credit shall immediately and automatically terminate and the unpaid
principal amount of the Notes (with accrued interest thereon) and all
other Obligations then outstanding, shall immediately become due and
payable without further action of any kind and without presentment,
demand, protest or notice of any kind, all of which are hereby expressly
waived by the Borrower.

 ..  UNIFORM COMMERCIAL CODE.  The Lender shall have all of the rights
and remedies of a secured party under the applicable Uniform Commercial
Code and other applicable Laws. Upon demand by the Lender, the Borrower
shall assemble the Collateral and make it available to the Lender, at a
place designated by the Lender.  The Lender or its agents may without
notice from time to time enter upon the Borrower's premises to take
possession of the Collateral, to remove it, to render it unusable, to
process it or otherwise prepare it for sale, or to sell or otherwise
dispose of it.

<PAGE>
Any written notice of the sale, disposition or other intended action by
the Lender with respect to the Collateral which is sent in accordance
with Section 8.1 hereof to the Borrower at the address set forth in
ARTICLE 8 of this Agreement, or such other address of the Borrower which
may from time to time be shown on the Lender's records, at least ten (10)
days prior to such sale, disposition or other action, shall constitute
commercially reasonable notice to the Borrower. The Lender may
alternatively or additionally give such notice in any other commercially
reasonable manner. Nothing in this Agreement shall require the Lender to
give any notice not required by applicable Laws.

If any consent, approval, or authorization of any state, municipal or
other governmental department, agency or authority or of any person, or
any person, corporation, partnership or other entity having any interest
therein, should be necessary to effectuate any sale or other disposition
of the Collateral, the Borrower agrees to execute all such applications
and other instruments, and to take all other action, as may be required
in connection with securing any such consent, approval or authorization.

 ..   SPECIFIC RIGHTS WITH REGARD TO COLLATERAL.  In addition to all other
rights and remedies provided hereunder or as shall exist at law or in
equity from time to time, the Lender may (but shall be under no
obligation to), without notice to the Borrower, and the Borrower hereby
irrevocably appoints the Lender as its attorney-in-fact, with power of
substitution, in the name of the Lender or in the name of the Borrower or
otherwise, for the use and benefit of the Lender, but at the cost and
expense of the Borrower and without notice to the Borrower:

          ()   request any Account Debtor obligated on any of the
Accounts to make payments thereon directly to the Lender, with the Lender
taking control of the cash and non-cash proceeds thereof;

()   compromise, extend or renew any of the Collateral or deal with the
same as it may deem advisable;

()   make exchanges, substitutions or surrenders of all or any part of
the Collateral;

()   copy, transcribe, or remove from any place of business of the
Borrower,  all books, records, ledger sheets, correspondence, invoices
and documents, relating to or evidencing any of the Collateral or without
cost or expense to the Lender, make such use of the Borrower's place(s)
of business as may be reasonably necessary to administer, control and
collect the Collateral;

()   repair, alter or supply goods if necessary to fulfill in whole or in
part the purchase order of any Account Debtor;

()   demand, collect, receipt for and give renewals, extensions,
discharges and releases of any of the Collateral;

()   institute and prosecute legal and equitable proceedings to enforce
collection of, or realize upon, any of the Collateral;
<PAGE>
()   settle, renew, extend, compromise, compound, exchange or adjust
claims in respect of any of the Collateral or any legal proceedings
brought in respect thereof;

()   endorse or sign the name of the Borrower upon any items of payment,
certificates of title, instruments, securities, stock powers, documents,
documents of title, or other writing relating to or part of the
Collateral and on any Proof of Claim in Bankruptcy against an Account
Debtor;

()   notify the Post Office authorities to change the address for the
delivery of mail to the Borrower to such address or Post Office Box as
the Lender may designate and receive and open all mail addressed to the
Borrower; and

()  take any other action necessary or beneficial to realize upon or
dispose of the Collateral.

 ..   APPLICATION OF PROCEEDS.  Any proceeds of sale or other disposition
of the Collateral will be applied by the Lender to the payment of the
Enforcement Costs, and any balance of such proceeds will be applied by
the Lender to the payment of the balance of the Obligations in such order
and manner of application as the Lender may from time to time in its sole
and absolute discretion determine. If the sale or other disposition of
the Collateral fails to fully satisfy the Obligations, the Borrower shall
remain liable to the Lender for any deficiency.

 ..   PERFORMANCE BY LENDER  After the occurrence of any Default, the
Lender without further notice to or demand upon the Borrower and without
waiving or releasing any of the Obligations or any Default or Event of
Default, may (but shall be under no obligation to) at any time thereafter
make such payment or perform such act for the account and at the expense
of the Borrower, and may enter upon the premises of the Borrower for that
purpose and take all such action thereon as the Lender may consider
necessary or appropriate for such purpose  and the Borrower hereby
irrevocably appoints the Lender as its attorney-in-fact to do so, with
power of substitution, in the name of the Lender or in the name of the
Borrower or otherwise, for the use and benefit of the Lender, but at the
cost and expense of the Borrower and without notice to the Borrower.  All
sums so paid or advanced by the Lender together with interest thereon
from the date of payment, advance or incurring until paid in full at the
Post-Default Rate and all costs and expenses, shall be deemed part of the
Enforcement Costs, shall be paid by the Borrower to the Lender on demand,
and shall constitute and become a part of the Obligations.

<PAGE>
 ..   OTHER REMEDIES.  The Lender may from time to time proceed to protect
or enforce its rights by an action or actions at law or in equity or by
any other appropriate proceeding, whether for the specific performance of
any of the covenants contained in this Agreement or in any of the other
Financing Documents, or for an injunction against the violation of any of
the terms of this Agreement or any of the other Financing Documents, or
in aid of the exercise or execution of any right, remedy or power granted
in this Agreement, the Financing Documents, and/or applicable Laws. The
Lender is authorized to offset and apply to all or any part of the
Obligations all moneys, credits and other property of any nature
whatsoever of the Borrower now or at any time hereafter in the possession
of, in transit to or from, under the control or custody of, or on deposit
with, the Lender.


     ARTICLE

     MISCELLANEOUS

SECTION . NOTICES.  All notices, requests and demands to or upon the
parties to this Agreement shall be in writing and shall be deemed to have
been given or made when delivered by hand on a Business Day, or two (2)
days after the date when deposited in the mail, postage prepaid by
registered or certified mail, return receipt requested, or when sent by
overnight courier, on the Business Day next following the day on which
the notice is delivered to such overnight courier, addressed as follows:

Borrower:      CTA Incorporated
6116 Executive Boulevard
Suite 800
Rockville, Maryland 20852
Mr. Gregory H. Wagner, Chief
Financial Officer and EVP

With a copy to:     Richard A. Steinwurtzel, Esq.
Fried, Frank, Harris, Shriver & Jacobson
1001 Pennsylvania Avenue, N.W.
Washington, D.C. 20004

Lender:        FIRST UNION COMMERCIAL CORPORATION
1970 Chain Bridge Road, Fifth Floor
McLean, Virginia 22102
Attention: Barbara Boehm, Vice President

with a copy to:     Richard M. Pollak, Esquire
Ober, Kaler, Grimes & Shriver
a Professional Corporation
1401 H Street, N.W. Suite 500
Washington, D.C. 20005

<PAGE>
By written notice, each party to this Agreement may change the address to
which notice is given to that party, provided that such changed notice
shall include a street address to which notices may be delivered by
overnight courier in the ordinary course on any Business Day.

SECTION . AMENDMENTS; WAIVERS.  This Agreement and the other Financing
Documents may not be amended, modified, or changed in any respect except
by an agreement in writing signed by the Lender and the Borrower. No
waiver of any provision of this Agreement or of any of the other
Financing Documents, nor consent to any departure by the Borrower
therefrom, shall in any event be effective unless the same shall be in
writing. No course of dealing between the Borrower and the Lender and no
act or failure to act from time to time on the part of the Lender shall
constitute a waiver, amendment or modification of any provision of this
Agreement or any of the other Financing Documents or any right or remedy
under this Agreement, under any of the other Financing Documents or under
applicable Laws.

Without implying any limitation on the foregoing:

()   Any waiver or consent shall be effective only in the specific
instance, for the terms and purpose for which given, subject to such
conditions as the Lender may specify in any such instrument.

()   No waiver of any Default or Event of Default shall extend to any
subsequent or other Default or Event of Default, or impair any right
consequent thereto.

()   No notice to or demand on the Borrower in any case shall entitle the
Borrower to any other or further notice or demand in the same, similar or
other circumstance.

()    No failure or delay by the Lender to insist upon the strict
performance of any term, condition, covenant or agreement of this
Agreement or of any of the other Financing Documents, or to exercise any
right, power or remedy consequent upon a breach thereof, shall constitute
a waiver, amendment or modification of any such term, condition, covenant
or agreement or of any such breach or preclude the Lender from exercising
any such right, power or remedy at any time or times.

()   By accepting payment after the due date of any amount payable under
this Agreement or under any of the other Financing Documents, the Lender
shall not be deemed to waive the right either to require prompt payment
when due of all other amounts payable under this Agreement or under any
of the other Financing Documents, or to declare a default for failure to
effect such prompt payment of any such other amount.

<PAGE>
SECTION . CUMULATIVE REMEDIES.  The rights, powers and remedies provided
in this Agreement and in the other Financing Documents are cumulative,
may be exercised concurrently or separately, may be exercised from time
to time and in such order as the Lender shall determine and are in
addition to, and not exclusive of, rights, powers and remedies provided
by existing or future applicable Laws.  In order to entitle the Lender to
exercise any remedy reserved to it in this Agreement, it shall not be
necessary to give any notice, other than such notice as may be expressly
required in this Agreement. Without limiting the generality of the
foregoing, the Lender may:

()   proceed against the Borrower or any other Person who may be liable
for all or any part of the Obligations;

()   proceed against the Borrower with or without proceeding under any of
the other Financing Documents or against any Collateral or other
collateral and security for all or any part of the Obligations;

()   without reducing or impairing the obligation of the Borrower and
without notice, release or compromise with any guarantor or other Person
liable for all or any part of the Obligations under the Financing
Documents or otherwise;

()   without reducing or impairing the obligations of the Borrower and
without notice thereof: () fail to perfect the Lien in any or all
Collateral or to release any or all the Collateral or to accept
substitute Collateral, () approve the making of advances under the
Revolving Loan under this Agreement, () waive any provision of this
Agreement or the other Financing Documents, () exercise or fail to
exercise rights of set-off or other rights, or () accept partial payments
or extend from time to time the maturity of all or any part of the
Obligations.

SECTION . SEVERABILITY.  In case one or more provisions, or part thereof,
contained in this Agreement or in the other Financing Documents shall be
invalid, illegal or unenforceable in any respect under any Law, then
without need for any further agreement, notice or action:

()   the validity, legality and enforceability of the remaining
provisions shall remain effective and binding on the parties thereto and
shall not be affected or impaired thereby;

()   the obligation to be fulfilled shall be reduced to the limit of such
validity;

()   if such provision or part thereof pertains to repayment of the
Obligations, then, at the sole and absolute discretion of the Lender, all
of the Obligations of the Borrower to the Lender shall become immediately
due and payable; and

<PAGE>
()   if affected provision or part thereof does not pertain to repayment
of the Obligations, but operates or would prospectively operate to
invalidate this Agreement in whole or in part, then such provision or
part thereof only shall be void, and the remainder of this Agreement
shall remain operative and in full force and effect.

SECTION . ASSIGNMENTS BY LENDER.  The Lender may, without notice to, or
consent of, the Borrower, sell, assign or transfer to or participate with
any Person or Persons all or any part of the Obligations, and each such
Person or Persons shall have the right to enforce the provisions of this
Agreement and any of the other Financing Documents as fully as the
Lender, provided that the Lender shall continue to have the unimpaired
right to enforce the provisions of this Agreement and any of the other
Financing Documents as to so much of the Obligations that the Lender has
not sold, assigned or transferred.  In connection with the foregoing, the
Lender shall have the right to disclose to any such actual or potential
purchaser, assignee, transferee or participant all financial records,
information, reports, financial statements and documents obtained in
connection with this Agreement and any of the other Financing Documents
or otherwise.

SECTION . SUCCESSORS AND ASSIGNS.  This Agreement and all other Financing
Documents shall be binding upon and inure to the benefit of the Borrower
and the Lender and their respective  successors and assigns, except that
the Borrower shall not have the right to assign its rights hereunder or
any interest herein without the prior written consent of the Lender.

SECTION . CONTINUING AGREEMENTS.  All covenants, agreements,
representations and warranties made by the Borrower in this Agreement, in
any of the other Financing Documents, and in any certificate delivered
pursuant hereto or thereto shall survive the making by the Lender of the
Loans and the execution and delivery of the Notes, shall be binding upon
the Borrower regardless of how long before or after the date hereof any
of the Obligations were or are incurred, and shall continue in full force
and effect so long as any of the Obligations are outstanding and unpaid.
From time to time upon the Lender's request, and as a condition of the
release of any one or more of the Security Documents, the Borrower and
other Persons obligated with respect to the Obligations shall provide the
Lender with such acknowledgments and agreements as the Lender may require
to the effect that there exists no defenses, rights of setoff or
recoupment, claims, counterclaims, actions or causes of action of any
kind or nature whatsoever against the Lender, its agents and others, or
to the extent there are, the same are waived and released.

<PAGE>
SECTION . ENFORCEMENT COSTS.  The Borrower agrees to pay to the Lender on
demand all Enforcement Costs, together with interest thereon from the
date incurred or advanced until paid in full at a per annum rate of
interest equal at all times to the Post-Default Rate. Enforcement Costs
shall be immediately due and payable at the time advanced or incurred,
whichever is earlier.  Without implying any limitation on the foregoing,
the Borrower agrees, as part of the Enforcement Costs, to pay upon demand
any and all stamp and other Taxes and fees payable or determined to be
payable in connection with the execution and delivery of this Agreement
and the other Financing Documents and to save the Lender harmless from
and against any and all liabilities with respect to or resulting from any
delay in paying or omission to pay any Taxes or fees referred to in this
Section.  The provisions of this Section shall survive the execution and
delivery of this Agreement, the repayment of the other Obligations and
shall survive the termination of this Agreement.

SECTION . APPLICABLE LAW; JURISDICTION.

 ..   As a material inducement to the Lender to enter into this Agreement,
the Borrower acknowledges and agrees that the Financing Documents,
including, this Agreement, shall be governed by the Laws of the State, as
if each of the Financing Documents and this Agreement had each been
executed, delivered, administered and performed solely within the State
even though for the convenience and at the request of the Borrower, one
or more of the Financing Documents may be executed elsewhere.  The Lender
acknowledges, however, that remedies under certain of the Financing
Documents which relate to property outside the State may be subject to
the laws of the state in which the property is located.

 ..   The Borrower irrevocably submits to the jurisdiction of any state or
federal court sitting in the State over any suit, action or proceeding
arising out of or relating to this Agreement or any of the other
Financing Documents.  The Borrower irrevocably waives, to the fullest
extent permitted by law, any objection that it may now or hereafter have
to the laying of the venue of any such suit, action or proceeding brought
in any such court and any claim that any such suit, action or proceeding
brought in any such court has been brought in an inconvenient forum.
Final judgment in any such suit, action or proceeding brought in any such
court shall be conclusive and binding upon the Borrower and may be
enforced in any court in which the Borrower is subject to jurisdiction,
by a suit upon such judgment, PROVIDED that service of process is
effected upon the Borrower in one of the manners specified in this
Section or as otherwise permitted by applicable Laws.

 ..   The Borrower hereby irrevocably designates and appoints The
Corporation Trust, Incorporated, 32 South Street, Baltimore, Maryland, as
the Borrower's authorized agent to receive on the Borrower's behalf
service of any and all process that may be served in any suit, action or
proceeding of the nature referred to in this Section in any state or
federal court sitting in the State.  If such agent shall cease so to act,
the Borrower shall irrevocably designate and appoint without delay
another such agent in the State satisfactory to the Lender and shall
promptly deliver to the Lender evidence in writing of such other agent's
acceptance of such appointment and its agreement that such appointment
shall be irrevocable.

<PAGE>
 ..   The Borrower hereby consents to process being served in any suit,
action or proceeding of the nature referred to in this Section by (i) the
mailing of a copy thereof by registered or certified mail, postage
prepaid, return receipt requested, to the Borrower at the Borrower's
address designated in or pursuant to Section 8.1 hereof, and (ii) serving
a copy thereof upon the agent, if any, designated and appointed by the
Borrower as the Borrower's agent for service of process by or pursuant to
this Section.  The Borrower irrevocably agrees that such service (i)
shall be deemed in every respect effective service of process upon the
Borrower in any such suit, action or proceeding, and (ii) shall, to the
fullest extent permitted by law, be taken and held to be valid personal
service upon the Borrower.  Nothing in this Section shall affect the
right of the Lender to serve process in any manner otherwise permitted by
law or limit the right of the Lender otherwise to bring proceedings
against the Borrower in the courts of any jurisdiction or jurisdictions.

SECTION . DUPLICATE ORIGINALS AND COUNTERPARTS.  This Agreement may be
executed in any number of duplicate originals or counterparts, each of
such duplicate originals or counterparts shall be deemed to be an
original and all taken together shall constitute but one and the same
instrument.

SECTION . HEADINGS.  The headings in this Agreement are included herein
for convenience only, shall not constitute a part of this Agreement for
any other purpose, and shall not be deemed to affect the meaning or
construction of any of the provisions hereof.

SECTION . NO AGENCY.  Nothing herein contained shall be construed to
constitute the Borrower as the Lender's agent for any purpose whatsoever
or to permit the Borrower to pledge any of the Lender's credit. The
Lender shall not be responsible nor liable for any shortage, discrepancy,
damage, loss or destruction of any part of the Collateral wherever the
same may be located and regardless of the cause thereof.  The Lender
shall not, by anything herein or in any of the Financing Documents or
otherwise, assume any of the Borrower's obligations under any contract or
agreement assigned to the Lender, and the Lender shall not be responsible
in any way for the performance by the Borrower of any of the terms and
conditions thereof.

SECTION . DATE OF PAYMENT.  Should the principal of or interest on the
Notes become due and payable on other than a Business Day, the maturity
thereof shall be extended to the next succeeding Business Day and in the
case of principal, interest shall be payable thereon at the rate per
annum specified in the Notes during such extension.

SECTION . ENTIRE AGREEMENT.  This Agreement is intended by the Lender and
the Borrower to be a complete, exclusive and final expression of the
agreements contained herein.  Neither the Lender nor the Borrower shall
hereafter have any rights under any prior agreements pertaining to the
matters addressed by this Agreement but shall look solely to this
Agreement for definition and determination of all of their respective
rights, liabilities and responsibilities under this Agreement.

<PAGE>
SECTION . WAIVER OF TRIAL BY JURY.  THE BORROWER AND THE LENDER HEREBY
JOINTLY AND SEVERALLY WAIVE TRIAL BY JURY IN ANY ACTION OR PROCEEDING TO
WHICH THE BORROWER AND THE LENDER MAY BE PARTIES, ARISING OUT OF OR IN
ANY WAY PERTAINING TO (A) THIS AGREEMENT, (B) ANY OF THE FINANCING
DOCUMENTS, OR (C) THE COLLATERAL.  THIS WAIVER CONSTITUTES A WAIVER OF
TRIAL BY JURY OF ALL CLAIMS AGAINST ALL PARTIES TO SUCH ACTIONS OR
PROCEEDINGS, INCLUDING CLAIMS AGAINST PARTIES WHO ARE NOT PARTIES TO THIS
AGREEMENT.

This waiver is knowingly, willingly and voluntarily made by the Borrower
and the Lender, and the Borrower and the Lender hereby represent that no
representations of fact or opinion have been made by any individual to
induce this waiver of trial by jury or to in any way modify or nullify
its effect.  The Borrower and the Lender further represent that they have
been represented in the signing of this Agreement and in the making of
this waiver by independent legal counsel, selected of their own free
will, and that they have had the opportunity to discuss this waiver with
counsel.

SECTION . LIABILITY OF THE LENDER.  The Borrower hereby agrees that the
Lender shall not be chargeable for any negligence, mistake, act or
omission of any accountant, examiner, agency or attorney employed by the
Lender in making examinations, investigations or collections, or
otherwise in perfecting, maintaining, protecting or realizing upon any
lien or security interest or any other interest in the Collateral or
other security for the Obligations, other than for errors or mistakes,
which arise directly from the Lender's gross negligence or willful
misconduct.

By inspecting the Collateral or any other properties of the Borrower or
by accepting or approving anything required to be observed, performed or
fulfilled by the Borrower or to be given to the Lender pursuant to this
Agreement or any of the other Financing Documents, the Lender shall not
be deemed to have warranted or represented the condition, sufficiency,
legality, effectiveness or legal effect of the same, and such acceptance
or approval shall not constitute any warranty or representation with
respect thereto by the Lender.

SECTION  .     ARBITRATION.  Upon demand of any party hereto, whether
made before or after institution of any judicial proceeding, any dispute,
claim or controversy arising out of, connected with or relating to this
Agreement and other Financing Documents ("Disputes") between or among
parties to this  Agreement shall be resolved by binding arbitration as
provided herein. Institution of a judicial proceeding by a party does not
waive the right of that party to demand arbitration hereunder. Disputes
may include, without limitation, tort claims, counterclaims, disputes as
to whether a matter is subject to arbitration, claims brought as class
actions, claims arising from Financing Documents executed in the future,
or claims arising out of or connected with the transaction reflected by
this Agreement.

<PAGE>
Arbitration shall be conducted under and governed by the Commercial
Financial Disputes Arbitration Rules (the "Arbitration Rules") of the
American Arbitration Association (the "AAA") and Title 9 of the U.S.
Code. All arbitration hearings shall be conducted in the city in which
the office of Lender first stated above is located. The expedited
procedures set forth in Rule 51 ET SEQ. of the Arbitration Rules shall be
applicable to claims of less than $1,000,000. All applicable statutes of
limitation shall apply to any Dispute. A judgment upon the award may be
entered in any court having jurisdiction. The panel from which all
arbitrators are selected shall be comprised of licensed attorneys. The
single arbitrator selected for expedited procedure shall be a retired
judge from the highest court of general jurisdiction, state or Federal,
of the state where the hearing will be conducted or if such person is not
available to serve, the single arbitrator may be a licensed attorney.
Notwithstanding the foregoing, this arbitration provision does not apply
to Disputes under or related to swap agreements.

SECTION .   PRESERVATION AND LIMITATION OF REMEDIES.  Notwithstanding the
preceding binding arbitration provisions, Lender and Borrower agree to
preserve, without diminution, certain remedies that any party hereto may
employ or exercise freely, independently or in connection with an
arbitration proceeding or after an arbitration action is brought. Lender
and Borrower shall have the right to proceed in any court of proper
jurisdiction or by self-help to exercise or prosecute the following
remedies, as applicable: (i) all rights to foreclose against any real or
personal property or other security by exercising a power of sale granted
under Financing Documents or under applicable law or by judicial
foreclosure and sale, including a proceeding to confirm the sale; (ii)
all rights of self-help including peaceful occupation of real property
and collection of rents, set-off, and peaceful possession of personal
property; (iii) obtaining provisional or ancillary remedies including
injunctive relief, sequestration, garnishment, attachment, appointment of
receiver and filing an involuntary bankruptcy proceeding; and (iv) when
applicable, a judgment by confession of judgment. Preservation of these
remedies does not limit the power of an arbitrator to grant similar
remedies that may be requested by a party in a Dispute.

The Borrower and Lender agree that they shall not have a remedy of
punitive or exemplary damages against the other in any Dispute and hereby
waive any right or claim to punitive or exemplary damages they have now
or which may arise in the future in connection with any Dispute whether
the Dispute is resolved by arbitration or judicially.



[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]
<PAGE>

IN WITNESS WHEREOF, each of the parties hereto have executed and
delivered this Agreement under their respective seals as of the day and
year first written above.

WITNESS/ATTEST:                    CTA INCORPORATED


_______________________
By:________________________________(SEAL)
      Gregory H. Wagner
Executive Vice President and Chief Financial
       Officer
<PAGE>

FIRST UNION COMMERCIAL
CORPORATION


By:________________________________(SEAL)
     Barbara Boehm
          Vice President
<PAGE>
  LIST OF EXHIBITS

A-1. Revolving Credit Note

A-2. Term Note

B.   Litigation

C.   Permitted Liens


<PAGE>
EXHIBIT B


                         STOCK PURCHASE AGREEMENT


     THIS  STOCK  PURCHASE AGREEMENT ("Agreement") dated November 21, 1997,
among Dr. C. E. Velez  ("Velez"),  Mr.  B. A. Claussen ("Claussen") and Mr.
Terry  J.  Piddington  ("Piddington")  (collectively,  the  "Sellers")  and
John  O. Wagner, as the trustee (the "Trustee")  of  the  CTA  INCORPORATED
EMPLOYEE  STOCK  OWNERSHIP  PLAN  TRUST (the "Trust"), which implements and
forms a part of the CTA INCORPORATED  EMPLOYEE  STOCK  OWNERSHIP  PLAN (the
"Plan").   The Trust and the Plan are hereinafter collectively referred  to
as the "ESOP".

                             R E C I T A L S:

     WHEREAS,  the  Sellers  collectively  own  3,191,503  shares of common
stock,  par  value  $.01 per share ("Common Stock") of CTA INCORPORATED,  a
Colorado corporation  ("CTA") and Sellers desire to sell to the Trustee and
the Trustee desires to  purchase  from  Sellers  certain of these shares in
accordance with the terms of this Agreement.

     WHEREAS, the board of directors of the Company by unanimous resolution
has waived the Company's right of first refusal, if  any,  with  respect to
any and all shares of the Seller's Common Stock to be sold hereby.

     NOW,  THEREFORE,  in consideration of the mutual covenants hereinafter
contained, the parties hereby agree as follows:


                                 ARTICLE 1
                               SALE OF STOCK

1.1  VELEZ SALE.  Subject to the terms and conditions of this Agreement, at
   the Closing (defined  below),  Velez  shall sell to the Trustee, and the
   Trustee shall purchase from Velez, 228,960  shares  of Common Stock (the
   "Velez  Shares") for a per share purchase price of $10.10  and  a  total
   purchase price of $2,312,496.00.

     1.2  CLAUSSEN  SALE.   Subject  to  the  terms  and conditions of this
Agreement,  at  the  Closing (defined below), Claussen shall  sell  to  the
Trustee, and the Trustee  shall  purchase  from  Claussen, 39,979 shares of
Common  Stock ( the "Claussen Shares") for a per share  purchase  price  of
$10.10  and a total purchase price of $403,787.90.

     1.3  PIDDINGTON  SALE.   Subject  to  the terms and conditions of this
Agreement, at the Closing (defined below), Piddington  shall  sell  to  the
Trustee,  and  the Trustee shall purchase from Piddington, 24,000 shares of
Common Stock (the  "Piddington  Shares")  for a per share purchase price of
$10.10 and a total purchase price of $242,400.


                                 ARTICLE 2
                                  CLOSING

     2.1  TIME AND PLACE.  The exchange of  items  described in Section 2.2
below (the "Closing") shall be held at the offices of  CTA, located at 6116
Executive  Boulevard,  Suite 800, Rockville, Maryland 20852,  at  10  a.m.,
local time, on November  21, 1997, or at such other time and place as shall
be mutually agreed upon by  the  parties.   The  date  of  the  Closing  is
sometimes referred to herein as the "Closing Date."

     2.2  DELIVERIES.  On the Closing Date (a) the Trustee shall deliver to
each   Seller  payment,  by  federal  wire  transfer  or  cashier's  check,
representing  the  purchase  price in accordance with Sections 1.1, 1.2 and
1.3  above;  (b) the Sellers shall  deliver  to  the  Trustee  certificates
representing the Common Stock described in Sections 1.1, 1.2 and 1.3 above,
duly endorsed  to the Trustee or accompanied by duly executed stock powers,
in transferable form with any requisite stock transfer stamps attached; and
(c) the parties shall deliver all other documents or agreements required by
this Agreement.


                                 ARTICLE 3
                  VELEZ'S REPRESENTATIONS AND WARRANTIES

     Velez represents and warrants to the Trustee as follows:

     3.1  TITLE  TO STOCK.  Velez is the record and beneficial owner of the
Velez Shares, which, as of Closing, shall be free and clear of any security
interest, claim, lien,  pledge,  option,  encumbrance  or  restriction  (on
transferability  or otherwise).  The delivery to the Trustee on the Closing
Date of certificates for the Velez Shares will convey to the Trustee lawful
and valid title thereto,  free  and  clear of any security interest, claim,
lien, pledge, option, encumbrance or restriction whatsoever.

     3.2  NECESSARY  AUTHORITY;  ENFORCEABILITY.    Velez   has  the  legal
competence  to  enter  into,  deliver  and  perform this Agreement  and  to
consummate the transactions contemplated herein.   This  Agreement has been
duly executed and delivered by Velez, and constitutes the  legal, valid and
binding  obligations of Velez enforceable against Velez in accordance  with
its terms,  except  as  the  same may be limited by bankruptcy, insolvency,
reorganization or other laws affecting the enforcement of creditors' rights
generally now or hereafter in  effect,  and  subject to the availability of
equitable remedies.

     3.3  NO CONFLICTS.  The execution, delivery  and  performance  of this
Agreement   by   Velez   and   Velez's  consummation  of  the  transactions
contemplated hereby, do not and will not (i) require the consent, approval,
authorization, order, filing, registration  or qualification of or with any
court, governmental authority or third person, (ii) conflict with or result
in  any  material  violation  of  or default under  any  provision  of  any
mortgage,  indenture,  lease,  agreement   or   other  instrument,  permit,
concession, grant, franchise or license to which Velez is party or by which
he  may  be  bound,  (iii)  violate any law, ordinance,  rule,  regulation,
judgment, order or decree applicable  to  Velez,  or  (iv)  result  in  the
creation  of any security interest, claim, lien, charge or encumbrance upon
any of the Velez Shares.

     3.4  NO BROKERS.  Velez has not entered into any contract, arrangement
or understanding  with  any  person  or  incurred any liability which would
result in the obligation of any person to  pay any finder's fees, brokerage
or  agent's  commissions or other like payments  in  connection  with  this
Agreement or the consummation of the transactions contemplated hereby.


                                 ARTICLE 4
                 CLAUSSEN'S REPRESENTATIONS AND WARRANTIES

     Claussen represents and warrants to the Trustee as follows:

     4.1  TITLE  TO  STOCK.  Claussen is the record and beneficial owner of
the Claussen Shares, which,  as  of Closing, shall be free and clear of any
security interest, claim, lien, pledge,  option, encumbrance or restriction
(on transferability or otherwise).  The delivery  to  the  Trustee  on  the
Closing  Date  of  certificates  for the Claussen Shares will convey to the
Trustee lawful and valid title thereto,  free  and  clear  of  any security
interest,   claim,   lien,   pledge,  option,  encumbrance  or  restriction
whatsoever.

     4.2  NECESSARY  AUTHORITY;  ENFORCEABILITY.  Claussen  has  the  legal
competence  to enter into,  deliver  and  perform  this  Agreement  and  to
consummate the  transactions  contemplated herein.  This Agreement has been
duly executed and delivered by  Claussen,  and constitutes the legal, valid
and  binding  obligations  of  Claussen  enforceable  against  Claussen  in
accordance with its terms, except as the same may be limited by bankruptcy,
insolvency,  reorganization  or  other laws affecting  the  enforcement  of
creditors' rights generally now or  hereafter in effect, and subject to the
availability of equitable remedies.

     4.3  NO CONFLICTS.  The execution,  delivery  and  performance of this
Agreement  by  Claussen  and  Claussen's  consummation of the  transactions
contemplated hereby, do not and will not (i) require the consent, approval,
authorization, order, filing, registration  or qualification of or with any
court, governmental authority or third person, (ii) conflict with or result
in  any  material  violation  of  or default under  any  provision  of  any
mortgage,  indenture,  lease,  agreement   or   other  instrument,  permit,
concession, grant, franchise or license to which  Claussen  is  party or by
which  he may be bound, (iii) violate any law, ordinance, rule, regulation,
judgment,  order  or  decree  applicable to Claussen, or (iv) result in the
creation of any security interest,  claim, lien, charge or encumbrance upon
any of the Claussen Shares.

     4.4  NO  BROKERS.   Claussen  has  not   entered  into  any  contract,
arrangement  or  understanding with any person or  incurred  any  liability
which would result  in  the  obligation  of  any person to pay any finder's
fees, brokerage or agent's commissions or other like payments in connection
with  this Agreement or the consummation of the  transactions  contemplated
hereby.


                                 ARTICLE 5
                PIDDINGTON'S REPRESENTATIONS AND WARRANTIES

     Piddington represents and warrants to the Trustee as follows:

     5.1  TITLE TO STOCK.  Piddington is the record and beneficial owner of
the Piddington Shares, which, as of Closing, shall be free and clear of any
security  interest, claim, lien, pledge, option, encumbrance or restriction
(on transferability  or  otherwise).   The  delivery  to the Trustee on the
Closing Date of certificates for the Piddington Shares  will  convey to the
Trustee  lawful  and  valid  title  thereto, free and clear of any security
interest,  claim,  lien,  pledge,  option  or  encumbrance  or  restriction
whatsoever.

     5.2  NECESSARY AUTHORITY; ENFORCEABILITY.   Piddington  has  the legal
competence  to  enter  into,  deliver  and  perform  this  Agreement and to
consummate the transactions contemplated herein.  This Agreement  has  been
duly executed and delivered by Piddington, and constitutes the legal, valid
and  binding  obligations  of  Piddington enforceable against Piddington in
accordance with its terms, except as the same may be limited by bankruptcy,
insolvency,  reorganization or other  laws  affecting  the  enforcement  of
creditors' rights  generally now or hereafter in effect, and subject to the
availability of equitable remedies.

     5.3  NO CONFLICTS.   The  execution,  delivery and performance of this
Agreement by Piddington and Piddington's consummation  of  the transactions
contemplated hereby, do not and will not (i) require the consent, approval,
authorization, order, filing, registration or qualification  of or with any
court, governmental authority or third person, (ii) conflict with or result
in  any  material  violation  of  or  default  under  any provision of  any
mortgage,   indenture,  lease,  agreement  or  other  instrument,   permit,
concession, grant,  franchise or license to which Piddington is party or by
which he may be bound,  (iii) violate any law, ordinance, rule, regulation,
judgment, order or decree  applicable  to Piddington, or (iv) result in the
creation of any security interest, claim,  lien, charge or encumbrance upon
any of the Piddington Shares.

     5.4  NO  BROKERS.   Piddington  has  not entered  into  any  contract,
arrangement  or understanding with any person  or  incurred  any  liability
which would result  in  the  obligation  of  any person to pay any finder's
fees, brokerage or agent's commissions or other like payments in connection
with  this Agreement or the consummation of the  transactions  contemplated
hereby.


                                 ARTICLE 6
               REPRESENTATIONS AND WARRANTIES OF THE TRUSTEE

     The  Trustee,  in his capacity as such, represents and warrants to the
Sellers as follows:

     6.1  NECESSARY AUTHORITY.   The  Trustee  has full power and authority
under the ESOP to execute and deliver this Agreement  on behalf of the ESOP
and to consummate the transactions contemplated hereby.  This Agreement has
been duly authorized, executed and delivered by the Trustee  on  behalf  of
the  ESOP,  and  constitutes the legal, valid and binding obligation of the
ESOP, enforceable  against the ESOP in accordance with its terms, except as
the same may be limited  by  the Employee Retirement Income Security Act of
1974,  as  amended from time to  time  ("ERISA"),  bankruptcy,  insolvency,
reorganization or other laws affecting the enforcement of creditors' rights
generally now  or  hereafter  in effect, and subject to the availability of
equitable remedies.

     6.2  NO CONFLICTS.  The execution,  delivery  and  performance of this
Agreement  by  the Trustee, in its capacity as such and on  behalf  of  the
ESOP, and the consummation  of  the transactions contemplated hereby do not
and  will  not  (a) require the consent,  approval,  authorization,  order,
filing, registration  or  qualification  of  or  with any court, government
authority or third person; (b) conflict with or result in the breach of any
provision  of, or constitute a default under, the ESOP  or  any  agreement,
indenture or  other  instrument  to  which  the Trustee, in its capacity as
such, or the ESOP, is a party or by which it or its assets may be bound; or
(c) violate any law, ordinance, rule, regulation, judgment, order or decree
binding upon the Trustee, in its capacity as such, or the ESOP or give rise
to any liability to the ESOP under  Title I of ERISA or Section 4975 of the
Internal Revenue Code of 1986, as amended from time to time (the "Code").

     6.3  QUALIFICATION.   The  ESOP  is,  in  form,   an  "employee  stock
ownership plan" within the meaning of Section 4975(e)(7)  of  the Code and,
in  form, qualifies under Section 401(a) of the Code.  The Trust  has  been
duly constituted in accordance with valid and binding trust instruments, is
validly existing and, in form, qualifies under Section 501(a) of the Code.

     6.4  INVESTMENT  REPRESENTATIONS.   The  Trust  is acquiring the Velez
Shares, the Claussen Shares and the Piddington Shares  for its own account,
for investment, and not with a view to, or for sale in connection with, the
distribution thereof or of any interest therein, in violation  of  state or
federal  law.   The  Trustee  understands  that  the Velez Shares, Claussen
Shares  and  Piddington  Shares  may not be sold or otherwise  disposed  of
unless  registered  under the Securities  Act  of  1933  or  exempted  from
registration.

     6.5  NO  BROKERS.   The  ESOP  has  not  entered  into  any  contract,
arrangement or  understanding  with  any  person  or incurred any liability
which  could result in the obligation of any person  to  pay  any  finder's
fees, brokerage or agent's commissions or other like payments in connection
with this  Agreement  or  the consummation of the transactions contemplated
hereby.


                                 ARTICLE 7
                           CONDITIONS TO CLOSING

     7.1  CONDITIONS TO EACH  PARTY'S  OBLIGATIONS  AT  THE  CLOSING.   The
respective  obligations  of  each  party  to  this  Agreement to effect the
purchase  and  sale  of  the  Velez  Shares,  the Claussen Shares  and  the
Piddington Shares shall be subject to the satisfaction  at  or prior to the
Closing of the following conditions:

          (a)  All  third  party consents required in connection  with  the
purchase  and  sale  of the Velez  Shares,  the  Claussen  Shares  and  the
Piddington Shares hereunder shall have been obtained.

          (b)  No temporary  restraining  order,  preliminary  or permanent
injunction, or other order issued by any court of competent jurisdiction or
other   legal   or  regulatory  restraint  or  prohibition  preventing  the
consummation of the  purchase  and  sale  of the Velez Shares, the Claussen
Shares and the Piddington Shares shall have  been  issued,  nor  shall  any
proceeding  brought by any governmental agency seeking any of the foregoing
be pending; nor  shall  there  be  any  action taken, or any statute, rule,
regulation, or order enacted, entered, enforced,  or  deemed  applicable to
the  purchase  and  sale of the Velez Shares, the Claussen Shares  and  the
Piddington Shares which makes the consummation of such transaction illegal.

     7.2  ADDITIONAL  CONSENTS  TO OBLIGATIONS OF THE TRUSTEE.  In addition
to the conditions set forth in Section  7.1, the obligations of the Trustee
to purchase the Velez Shares, the Claussen Shares and the Piddington Shares
shall be subject to the satisfaction at or  prior  to  the  Closing  of the
following conditions:

          (a)  All  of  the  representations  and  warranties  made  by the
Sellers herein shall be true and correct in all material respects as of the
Closing Date with the same force and effect as if such representations  and
warranties  had  been  made  as  of  the  Closing Date, except as expressly
contemplated herein.

          (b)  Sellers shall have performed  in  all  material respects all
obligations  required to be performed by them under this  Agreement  on  or
prior to the Closing Date.

          (c)  The Trustee shall have received an appraisal or opinion from
its financial  advisor to the effect that the purchase price payable by the
ESOP constitutes  no  more than "adequate consideration" within the meaning
of ERISA.

          (d)  All other  agreements  and documents required to be executed
or delivered by Sellers shall have been  executed  and delivered by them as
contemplated hereby.

     7.3  ADDITIONAL CONDITIONS TO SELLERS' OBLIGATIONS.   In  addition  to
the  conditions set forth in Section 7.1, Sellers' obligations respectively
to sell  the Velez Shares, the Claussen Shares and the Piddington Shares to
the Trustee shall be subject to the satisfaction at or prior to the Closing
of the following conditions:

          (a)  All  of  the  representations  and  warranties  made  by the
Trustee herein shall be true and correct in all material respects as of the
Closing Date with the same force and effect as if such representations  and
warranties  had  been  made  as  of  the  Closing Date, except as expressly
contemplated herein, and Sellers shall have  received a certificate to such
effect signed by the Trustee.

          (b)  The Trustee shall have performed  in  all  material respects
all obligations required to be performed by it under this Agreement  on  or
prior to the Closing Date, and Sellers shall have received a certificate to
such effect signed by the Trustee.

          (c)  All other agreements or documents required to be executed or
delivered  by  the  Trustee shall have been executed and delivered by it as
contemplated hereby.


                                 ARTICLE 8
                              INDEMNIFICATION

     8.1  SELLERS.  Sellers shall severally, and not jointly, indemnify and
hold harmless the Trustee  and  its  authorized  agents and representatives
against any and all costs, losses, claims, liabilities,  fines,  penalties,
damages  and  expenses  suffered  by  any  of  them  in connection with any
inaccuracy in or breach of any representations or warranties of such Seller
made herein or any breach of this Agreement by such Seller.

     8.2  LIMITATION OF LIABILITY.  Each Seller's liability under 8.1 shall
be  limited to the amount of consideration such Seller  received  from  the
Trustee  for  the  shares  of Common Stock sold pursuant to this Agreement,
except as may be required by applicable law.

     8.3  TRUSTEE.  The Trustee  hereby indemnifies and holds harmless each
Seller and his authorized agents and  representatives  against  any and all
costs, losses, claims, liabilities, fines, penalties, damages and  expenses
suffered  by  any of them resulting solely from any inaccuracy in or breach
of any representations  or  warranties  of  the  Trustee made herein or any
breach of this Agreement by the Trustee.


                                 ARTICLE 9
                                  GENERAL

     9.1  EXECUTION OF COUNTERPART.  For the convenience  of  the  parties,
this  Agreement may be executed in one or more counterparts, each of  which
shall be deemed an original, but all of which together shall constitute one
and the same document.

     9.2  NOTICES.  All notices which are required or may be given pursuant
to the  terms of this Agreement shall be in writing and shall be sufficient
in all respects  if  delivered personally, by registered or certified mail,
postage prepaid, overnight courier, or by facsimile, as follows:

          If to the Sellers:

          C. E. Velez
          c/o CTA INCORPORATED
          6116 Executive Boulevard
          Suite 800
          Rockville, Maryland  20852

          If to the ESOP:

          Attention:  John O. Wagner, Trustee
          CTA Employee Stock Ownership Plan
          c/o CTA INCORPORATED
          6116 Executive Boulevard
          Suite 800
          Rockville, Maryland  20852
          Facsimile:  (301) 816-1460

or to such other address  or facsimile number as shall be furnished in like
manner by any party to the others.  Any such notice shall be deemed to have
been given, received and become  effective  for all purposes at the time it
shall have been (a) delivered to the addressee  as  indicated by the return
receipt  (if  transmitted by mail) or the affidavit of  the  messenger  (if
transmitted by  personal  delivery)  or  the  confirmation  of  receipt (if
transmitted via facsimile); or (b) presented for delivery to the  addressee
as  so indicated during normal business hours, if such delivery shall  have
been refused for any reason.

     9.3  ASSIGNMENT  AND SUCCESSORS.  This Agreement shall be binding upon
and  inure to the benefit  of  the  parties  hereto  and  their  respective
successors  and  assigns.   No  party  shall  assign  any  of its rights or
obligations  hereunder  without  the  prior  written  consent of the  other
parties  other  than  to  a party that acquired substantially  all  of  the
transferor's assets through a merger or asset purchase.

     9.4  GOVERNING  LAW.   This   Agreement  shall  be  governed  by,  and
interpreted  in accordance with, the  substantive  laws  of  the  State  of
Maryland, except as preempted by ERISA or required by the Code.

     9.5  ENTIRE  AGREEMENT.   This  Agreement, together with the schedules
hereto, constitutes the entire agreement  among  the parties hereto, and no
party  hereto  shall be bound by any communications  between  them  on  the
subject matter hereof  unless such communications are in writing and bear a
date contemporaneous with  or  subsequent  to  the  date hereof.  Any prior
written agreements or letters of intent among the parties  shall,  upon the
execution of this Agreement, be null and void.

     9.6  HEADINGS.   The  headings  in the sections of this Agreement  are
inserted for convenience only and shall  not  constitute  a  part hereof or
affect the meaning or interpretation hereof.

     9.7  REPRESENTATIONS   AS   TO   COMPLIANCE  WITH  LAW.   Whenever   a
representation or warranty is made herein  with  respect to compliance with
any  law, that representation means the applicable  subject  matter  is  in
compliance  with  applicable  statutes,  regulations  and  ordinances as in
existence on the date hereof and on the Closing Date and does not extend to
any amendments or revisions of such laws adopted subsequent to such dates.

     9.8  SEVERABILITY.    The  invalidity  or  unenforceability   of   any
provision of this Agreement shall not affect the validity or enforceability
of any other provision hereunder.

     9.9  FACSIMILE SIGNATURES.   Delivery  of an executed counterpart of a
signature  page  to  this  Agreement by facsimile  shall  be  effective  as
delivery of a manually executed counterpart of this Agreement.

     9.10 ERISA CONSTRUCTION.   Whenever  possible,  each provision of this
Agreement  shall  be  construed  and interpreted in such manner  as  to  be
effective  and  valid under ERISA and  the  Code,  and  regulations  issued
thereunder, but if  any provision of this Agreement shall be prohibited by,
or invalid or unenforceable  under,  such  statutes  or  regulations,  such
provision  shall  be  ineffective  and  unenforceable to the extent of such
prohibition  or  invalidity, without invalidating  the  remainder  of  such
provision or the remaining provisions of this Agreement.

     9.11 WAIVER,  DISCHARGE,  ETC.   This  Agreement  may not be released,
discharged or modified except by an instrument in writing  signed on behalf
of  each  of  the  parties  hereto.  The failure of a party to enforce  any
provision of this Agreement shall  not  be deemed a waiver by such party of
any  other  provision  or  subsequent breach  of  the  same  or  any  other
obligation hereunder.

     9.12 ACTION TAKEN AS TRUSTEE.   This  document  was  executed  by  the
Trustee,  not  in  his  individual  capacity,  but solely as Trustee of the
Trust.  The performance of this Agreement by the  Trustee  and  any and all
duties,  obligations  and  liabilities  of  the Trustee hereunder shall  be
effected by him only as Trustee.  The Trustee  does not undertake nor shall
he have any individual liability or obligation of  any nature whatsoever by
virtue   of  the  execution  and  delivery  of  this  Agreement,   or   the
representations, covenants or warranties contained herein.




                                   - 1 -



<PAGE>





     IN WITNESS WHEREOF, the parties have signed this Agreement the day and
year first above written.


                              CTA INCORPORATED
                              EMPLOYEE STOCK OWNERSHIP TRUST



                              By: ____________________________________
                                   John O. Wagner, Trustee



                              __________________________________________
                              C. E. Velez



                              __________________________________________
                              B. A. Claussen



                              __________________________________________
                              Terry J. Piddington



                                   - 2 -



<PAGE>





     IN WITNESS WHEREOF, the parties have signed this Agreement the day and
year first above written.


                              CTA INCORPORATED
                              EMPLOYEE STOCK OWNERSHIP TRUST



                              By:   /S/JOHN O. WAGNER
                                   John O. Wagner, Trustee



                                /S/C. E. VELEZ
                              C. E. Velez



                                /S/B. A. CLAUSSEN
                              B. A. Claussen



                                /S/TERRY J. PIDDINGTON
                              Terry J. Piddington




                                   - 3 -
<PAGE>





             [LEGG MASON WOOD WALKER, INCORPORATED LETTERHEAD]







                            September 10, 1997



Board of Directors
CTA INCORPORATED
6116 Executive Boulevard
Suite 800
Rockville, Maryland  20852

Members of the Board:

     You  have  requested our opinion (the "Opinion") as to the fair market
value of minority  holdings  of  Common Stock of CTA INCORPORATED ("CTA" or
the "Company") as of June 30, 1997.  We understand that the Company intends
to use the Opinion for the purpose  of  contributing  common  stock  to  an
employee stock plan.

     In rendering our Opinion we have, among other things:

     (i)  reviewed  the audited financial statements of CTA for each of the
          five years ended December 31, 1992 through December 31, 1996;

     (ii) reviewed the  unaudited  financial  statements of CTA for the six
          months ended June 30, 1996 and 1997;

     (iii)  reviewed certain other information relating  to  the  business,
          earnings, cash flow, assets and prospects of the Company;

     (iv) reviewed  contract backlog data and contract profiles prepared by
          management;

     (v)  reviewed certain  data  regarding  the  financial performance and
          market valuation of selected public companies  we  deemed  to  be
          engaged in operations similar to those of CTA;

     (vi) reviewed  data relating to recent merger and acquisition activity
          in relevant industry classifications; and

     (vii) met with senior  management  of  CTA  to  discuss  the operating
          performance and future prospects of the Company.

     We   have  relied  without  independent  verification  on  information
supplied to  us  by  CTA and its employees, representatives and independent
public  accountants  as   well  as  information  available  from  generally
recognized public sources and,  accordingly,  do  not assume responsibility
for  the  accuracy or completeness of such information.   Additionally,  we
have not made  an  appraisal  of  any assets of CTA.  Our Opinion herein is
necessarily based upon conditions and  circumstances  as  they  exist, have
been disclosed to us and can be evaluated as of the date hereof.

     In  recommending a 17.5% Discount Factor for the minority holdings  of
CTA Common  Stock  we note that while there is no active trading market for
the Common Stock, there  have  been limited treasury stock purchases by the
Company, its Employee Stock Option Plan and employees of CTA.

     Based upon our analysis of  the  foregoing and upon such other data as
we have considered relevant to our analysis,  it  is  our  Opinion that the
fair  market  value  of  minority  holdings  of  CTA  Common  Stock of  CTA
INCORPORATED falls in a range of $8.60 per share to $11.60 per  share as of
June 30, 1997, with an expected value of $10.10 per share.

                          Very truly yours,

                          LEGG MASON WOOD WALKER, INCORPORATED



                          By:_______/S/SCOTT R. COUSINO_________
                                   Scott R. Cousino
                                   Managing Director



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