CTA INCORPORATED
SC 13E4, 1997-11-28
COMPUTER PROGRAMMING SERVICES
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                                SCHEDULE 13E-4


                      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) --     Guidelines    for    Certification     of    Taxpayer
Identification Number on Substitute
           Form W-9.
         (4) --     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.
         (2) --     The Company's Quarterly Report on Form 10-Q  for  the
quarter ended September 30, 1997.
         (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)  Guidelines  for Certification of Taxpayer Identification Number
       on Substitute Form W-9.
  (4)  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.
  (2)  The  Company's  Quarterly  Report  on Form 10-Q for the quarter
       ended September 30, 1997.
  (3)  Appraisal   of   Legg  Mason  Wood  Walker  Incorporated  dated
       September 10, 1997.



<PAGE>

                            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




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