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                                                                    EXHIBIT 10.1


                                                                  EXECUTION COPY
                               VOTING AGREEMENT

      THIS VOTING AGREEMENT is entered into as of the 23rd day of December,
1997, by and among Daedalus Enterprises, Inc., a Delaware corporation
("DEI"), the persons listed on the signature page hereto as DEI Stockholders
(the "DEI Stockholders") and the persons listed on the signature page hereto
as STR Stockholders (the "STR Stockholders").

                                  RECITALS:

      This Agreement is made with reference to the following acts and
objectives:

            (a)    Each of the DEI Stockholders own shares of common stock,
      par value $.01 (the "DEI Common Stock") of DEI.

            (b)   Each of the STR Stockholders own shares of the common
      stock, par value $.10 ("STR Common Stock"), of S. T. Research
      Corporation, a Virginia corporation ("STR").

            (c)   Pursuant to an Agreement and Plan of Merger of even date
      herewith between STR, DEI and a wholly-owned subsidiary of DEI (the
      "Merger Agreement"), each of the STR Stockholders will acquire DEI
      Common Stock at the time of the filing of Articles of Merger with the
      Virginia State Corporation Commission (the "Effective Time") with
      respect to the merger of a wholly-owned subsidiary of DEI with and into
      STR (the "Merger").

            (d)   The parties hereto believe that it is in their best
      interest (i) to make certain provisions for the voting and non-transfer
      of their DEI Common Stock and STR Common Stock in connection with the
      Merger; and (ii) to provide for the election of certain directors to
      the Board of Directors of DEI following the Merger.

                                  AGREEMENT:

      In order to consummate the desires of the parties set forth in the
foregoing recitals, each of the parties hereby agrees as follows:

      1.  DEI Stockholders' Agreements.  Provided that the Merger Agreement
has not been terminated in accordance with its terms (or notice of
termination given and not withdrawn), each of the DEI Stockholders agrees
that:




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            1.1  Voting.  At the DEI Stockholder Meeting contemplated under
      the Merger Agreement, such DEI Stockholder shall vote all of the shares
      of DEI Common Stock with respect to which he has or shares voting power
      for the approval of the matters stated in Section 5.2 of the Merger
      Agreement to be brought before such meeting.

            1.2   No Transfer of DEI Common Stock.  Prior to the earlier of
      the Merger, the termination of the Merger Agreement or July 1, 1998,
      each DEI Stockholder agrees not to sell, transfer or assign any of his
      shares of DEI Common Stock unless the purchaser, transferee or assignee
      agrees in writing to accept such shares of DEI Common Stock subject to
      this Agreement in the capacity of a DEI Stockholder hereunder.

      2.    STR Stockholders' Agreements.  Provided that the Merger Agreement
has not been terminated in accordance with its terms (or notice of
termination given and not withdrawn), each of the STR Stockholders agrees
that:

            2.1   Voting.  At the STR Stockholders Meeting contemplated under
      the Merger Agreement, such STR Stockholder shall vote all of the shares
      of STR Common Stock with respect to which he has or shares voting power
      for approval of the Merger Agreement, the Merger and the consummation
      of the transactions contemplated thereunder.

            2.2   No Transfer of STR Common Stock.  Prior to the earlier of
      the Merger, the termination of the Merger Agreement or July 1, 1998,
      each STR Stockholder agrees not to sell, transfer or assign any of his
      shares of STR Common Stock unless the purchaser, transferee or assignee
      agrees in writing to accept such shares of STR Common Stock subject to
      this Agreement in the capacity of an STR Stockholder hereunder.

      3.    DEI Agreements.  For a period beginning at the Effective Time and
ending on the date following the conclusion of the second annual meeting of
the stockholders of DEI after the Effective Time, DEI agrees (a) that, except
as provided in the next sentence, the number of directors on its Board of
Directors shall be fixed at seven and (b) to nominate Thomas R. Ory, John D.
Sanders, Philip H. Power, Santo R. Perrino, Kent Rockwell, James Busey and
Charles Bernard for election as directors at each meeting of the stockholders
of DEI at which directors are elected, subject to the consent of such persons
to serve in such capacity.  In the event that, after the Effective Time and
before the conclusion of the second annual meeting of the stockholders of DEI
after the Effective Time, DEI engages in a financing transaction or an
acquisition transaction the terms of which require DEI to increase the number
of directors on the Board and to appoint a new director or directors to fill
the vacancy or vacancies created thereby,  such an increase in the number of
directors shall not constitute a breach of clause (a) of the preceding
sentence, provided that the number of directors is not increased to more than
10.

      4.    Notices.  All notices which are required or may be given pursuant
to this Agreement shall be in writing and shall be sufficient in all respects
if given in writing and delivered personally or mailed by registered,
certified or express mail, postage prepaid, as follows:


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            If to DEI or the STR Stockholders:  S.R. Perrino
                                                8419 Terminal Road
                                                Newington, Virginia 22122

            If to the DEI Stockholders:         Thomas R. Ory
                                                300 Parkland Plaza
                                                Ann Arbor, Michigan 48106

or at such other address as any party hereto shall have designated by notice
in writing to all other parties hereto specifically referring to this Section
4 of this Agreement.

      5.    Jurisdiction.  This Agreement shall be interpreted and construed
under the laws of the State of Delaware applicable to contracts executed and
fully performed in the State of Delaware.

      6.    Modification.  This Agreement constitutes the entire agreement
among the parties hereto with respect to the subject matter hereof and
supersedes all prior oral and written understandings, agreements,
representations and negotiations.  Except as provided in Section 11 hereof,
this Agreement may not be modified except in writing signed by all of the
parties.

      7.    Causation and Specific Performance.  Each of the parties agrees
to vote their respective DEI Common Stock and STR Common Stock and all
parties agree to cooperate and perform every act and execute every document
necessary to enforce the rights and obligations provided in this Agreement.
The provisions of this Agreement may be enforced specifically and each party
waives all claims and defenses that an adequate remedy at law or in damages
exists and agrees that none does exist.  No waiver of any provision or breach
of this Agreement will be effective unless in writing signed by the party or
parties granting the waiver, and no waiver will be deemed a waiver of any
other breach.

      8.    Counterparts.  This Agreement may be executed in two or more
counterparts, each of which will be deemed an original and all of which
together will constitute the same agreement, whether or not all parties
execute each counterpart.

      9.    Construction.  The language in all parts of this Agreement shall
in all cases be construed as a whole according to its fair meaning, strictly
neither for nor against any party hereto, and without implying a presumption
that the terms thereof shall be more strictly construed against the person
who himself or through his agent prepared the same, it being agreed that
representatives of each party hereto have participated in the preparation
hereof.

      10.   Further Assurances.  Each of the parties hereto agrees that it or
he will, at any time, and from time to time after the date hereof, upon the
reasonable request of the other parties, do, execute, acknowledge and
deliver, or will cause to be done, executed, acknowledged and delivered, all
such acts and instruments as may be reasonably required in conformity with
this Agreement to consummate the transactions contemplated herein (including,
without limitation, 



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irrevocable proxies).

      11.   Binding Effect; Assignability; Additional Parties.  Neither this
Agreement nor any of the parties' rights hereunder shall be assignable by any
party hereto without the prior written consent of the other parties hereto.
The terms, conditions and restrictions of this Agreement shall be binding
upon and inure to the benefit of the parties hereto, and their respective
successors and assigns; provided, however, that this Agreement shall not be
binding upon transferees of DEI Common Stock after the Effective Time if such
DEI Common Stock was transferred pursuant to (a) an effective registration
statement under the Securities Act of 1933 (the "Act") or (b) a transaction
which satisfies the manner of sale conditions contained in paragraphs (f) and
(g) of Rule 144 under the Act, as such Rule is in effect on the date hereof.
The parties acknowledge and agree that other holders of DEI Common Stock or
STR Common Stock may, at any time during the term hereof, become parties to
this Agreement by executing and delivering a copy of this Agreement to each
of the other parties hereof in accordance with Section 4 hereof.  Any person
becoming a party to this Agreement pursuant to the preceding sentence shall
be deemed a "DEI Stockholder" to the extent such person has or shares voting
power with respect to shares of DEI Common Stock at any time and shall be
deemed an "STR Stockholder" to the extent such person has or shares voting
power with respect to shares of STR Common Stock at any time.

      12.   Term and Effectiveness.  This Agreement shall be effective as of
the date hereof and shall terminate on the earlier of (a) the termination of
the Merger Agreement or (b) the day following the conclusion of the second
annual meeting of the stockholders of DEI after the Effective Time.

      IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed on the day and year first above written.


DAEDALUS ENTERPRISES, INC.


By:   /s/
      ------------------------

Its:
      ------------------------


DEI STOCKHOLDERS                          STR STOCKHOLDERS


 /s/  Thomas R. Ory                       /s/  Santo R. Perrino
- ------------------------                  -------------------------
Thomas R. Ory                             Santo R. Perrino


 /s/  Charles G. Stanich                  /s/  Robert S. Bower
- ------------------------                  -------------------------
Charles G. Stanich                        Robert S. Bower


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 /s/  John D. Sanders                     /s/  John D. Sanders
- ------------------------                  -------------------------
John D. Sanders                           John D. Sanders


 /s/  Philip H. Power                     /s/  Donald Reiser
- ------------------------                  -------------------------
Philip H. Power                           Donald Reiser



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