VERTEX COMMUNICATIONS CORP /TX/
8-K/A, 1997-06-26
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<PAGE>   1
================================================================================



                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

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


                                   FORM 8-K/A
                                 CURRENT REPORT

     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


              DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): JUNE 26, 1997
                                                                MAY 9, 1997


                       VERTEX COMMUNICATIONS CORPORATION
             (Exact Name of Registrant as Specified in its Charter)


<TABLE>
  <S>                                      <C>                                     <C>
              TEXAS                                0-15277                                    75-1982974
  (State or Other Jurisdiction             (Commission File Number)                (I.R.S. Employer Identification No.)
        of Incorporation)


         2600 NORTH LONGVIEW STREET, KILGORE, TEXAS                                75662
          (Address of Principal Executive Offices)                               (Zip Code)
</TABLE>


      Registrant's telephone number, including area code:  (903) 984-0555


                                 NOT APPLICABLE
         (Former Name or Former Address, if Changed Since Last Report)


================================================================================

<PAGE>   2
                       VERTEX COMMUNICATIONS CORPORATION
                                   FORM 8-K/A
                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

================================================================================





ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS.

         (a)     ACQUISITION OF TIW SYSTEMS, INC.  In accordance with the terms
and provisions of a definitive Agreement and Plan of Reorganization (the
"Reorganization Agreement"), dated May 9, 1997, by and among the Registrant
(the "Registrant" or "Vertex"), Vertex Acquisition Corporation ("VAC"), a
Nevada corporation and a wholly-owned subsidiary of the Registrant, TIW
Systems, Inc. ("TIW"), a California corporation, and certain principal
shareholders of TIW (the "Principal Shareholders"), on June 11, 1997, the
Registrant consummated the Reorganization Agreement and the transactions
contemplated thereby and acquired all of the outstanding stock of TIW pursuant
to the merger (the "Merger") of TIW with and into VAC, whereby VAC (i) is the
surviving corporation in the Merger, (ii) will continue thereafter as a
wholly-owned subsidiary of the Registrant and (iii) incidental to and as a part
of the Merger changed its name to "TIW Systems, Inc."  The Registrant will
account for the acquisition under the purchase method of accounting.

         The Registrant consummated the Merger for aggregate consideration of
approximately $19.5 million, consisting of (i) cash at closing (from the
Registrant's general corporate funds available therefor) of approximately $7.9
million (the "Cash Portion of the Consideration"), (ii) an aggregate of 574,349
shares of the Registrant's authorized but previously unissued common stock,
$.10 par value per share (the "Vertex Exchange Shares"), valued at $19.50 per
share, as adjusted for payment of fractional shares in cash, and (iii) direct
acquisition costs of approximately $.4 million.  Such consideration was
determined between the Registrant, TIW and the Principal Shareholders through
arms-length, good faith bargaining.

         Upon consummation of the Merger, (i) the separate corporate existence
of TIW ceased and all of the properties, rights, privileges, powers and
franchises of TIW vested in VAC, and all of the debts, liabilities and duties
of TIW attached to VAC, and (ii) all of the shares of TIW common stock, no par
value per share (the "TIW Common Stock"), outstanding immediately prior to the
effective time of the Merger were converted into the right to receive the Cash
Portion of the Consideration and the Vertex Exchange Shares, subject to certain
adjustments.  The Reorganization Agreement, including the related Merger, was
approved by the holders of the requisite majority of the shares of TIW Common
Stock entitled to vote thereon and the other conditions to the Merger were
timely satisfied or waived.

         Prior to the Merger, neither the Registrant nor any of its affiliates,
any director or officer of the Registrant, nor any associate of any such
director or officer of the Registrant had any material relationship with TIW or
the Principal Shareholders thereof or any of their respective affiliates or
associates.
<PAGE>   3
ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.




           (c)  EXHIBITS.

                 2.1(1)--  Agreement and Plan of Reorganization, dated May 9,
                           1997, by and among TIW Systems, Inc., a California
                           corporation, Vertex Communications Corporation, a
                           Texas corporation, Vertex Acquisition Corporation, a
                           Nevada corporation, and Heldur Tonisson, Rein Luik,
                           and TIW Systems, Incorporated Employee Stock
                           Ownership Trust, Principal Shareholders of TIW
                           Systems, Inc.

                 2.2(2)--  Articles of Merger of TIW Systems, Inc., a
                           California corporation, with and into Vertex
                           Acquisition Corporation, a Nevada corporation, dated
                           June 11, 1997, including the Plan of Merger, dated
                           June 11, 1997, by and among TIW Systems, Inc.,
                           Vertex Acquisition Corporation, and Vertex
                           Communications Corporation, a Texas corporation.

                99.1(2)--  Executive Employment Agreement, dated June 11, 1997,
                           by and between Rein Luik and TIW Systems, Inc., a
                           Nevada corporation.

                99.2(2)--  Executive Employment Agreement, dated June 11, 1997,
                           by and between Louis Becker and TIW Systems, Inc., a
                           Nevada corporation.

                99.3(2)--  Noncompetition Agreement, dated June 11, 1997, by
                           and among Rein Luik, Vertex Communications
                           Corporation and Vertex Acquisition Corporation (now
                           known as TIW Systems, Inc., a Nevada corporation).

                99.4(2)--  Noncompetition Agreement, dated June 11, 1997, by
                           and among Louis Becker, Vertex Communications
                           Corporation and Vertex Acquisition Corporation (now
                           known as TIW Systems, Inc., a Nevada corporation).

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

                (1)    Filed as an Exhibit to the Registrant's Current Report
                       on Form 8-K dated May 14, 1997 (Date of Earliest Event
                       Reported:  May 9, 1997; Commission File No. 0-15277),
                       which Exhibit is incorporated herein by reference.

                (2)    Filed herewith.





                                      -2-
<PAGE>   4
                                   SIGNATURES


           Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                VERTEX COMMUNICATIONS CORPORATION
                                         (Registrant)


                                By:  /s/ James D. Carter 
                                     -------------------------------------------
                                                  James D. Carter
                                     Vice President and Chief Financial Officer
                                     (Duly Authorized Officer and 
                                     Principal Financial and Accounting Officer)
Date:  June 26, 1997





                                      -3-
<PAGE>   5
                               INDEX TO EXHIBITS


<TABLE>
<CAPTION>
                                                                                     SEQUENTIALLY
 EXHIBIT                                                                               NUMBERED  
 NUMBER                           DESCRIPTION OF EXHIBIT                                PAGE     
 -------                          ----------------------                                ----            
<S>            <C>                                                                  <C>
 2.2(1)        Agreement and Plan of Reorganization, dated May 9, 1997, by
               and among TIW Systems, Inc., a California corporation,
               Vertex Communications Corporation, a Texas corporation,
               Vertex Acquisition Corporation, a Nevada corporation, and
               Heldur Tonisson, Rein Luik, and TIW Systems, Incorporated
               Employee Stock Ownership Trust, Principal Shareholders of
               TIW Systems, Inc.

 2.2(2)        Articles of Merger of TIW Systems, Inc., a California
               corporation, with and into Vertex Acquisition Corporation, a
               Nevada corporation, dated June 11, 1997, including the Plan
               of Merger, dated June 11, 1997, by and among TIW Systems,
               Inc., Vertex Acquisition Corporation, and Vertex
               Communications Corporation, a Texas corporation

99.1(2)        Executive Employment Agreement, dated June 11, 1997, by and
               between Rein Luik and TIW Systems, Inc., a Nevada
               corporation

99.2(2)        Executive Employment Agreement, dated June 11, 1997, by and
               between Louis Becker and TIW Systems, Inc., a Nevada
               corporation

99.3(2)        Noncompetition Agreement, dated June 11, 1997, by and among
               Rein Luik, Vertex Communications Corporation and Vertex
               Acquisition Corporation (now known as TIW Systems, Inc., a
               Nevada corporation)

99.4(2)        Noncompetition Agreement, dated June 11, 1997, by and among
               Louis Becker, Vertex Communications Corporation and Vertex
               Acquisition Corporation (now known as TIW Systems, Inc., a 
               Nevada corporation)
</TABLE>

- ----------------------
   (1)     Filed as an Exhibit to the Registrant's Current Report on Form 8-K
           dated May 14, 1997 (Date of Earliest Event Reported:  May 9, 1997;
           Commission File No. 0-15277), which Exhibit is incorporated herein
           by reference.

   (2)     Filed herewith.

<PAGE>   1
                                                                     EXHIBIT 2.2


================================================================================


                       VERTEX COMMUNICATIONS CORPORATION

                                  EXHIBIT 2.2
                                       TO
                         CURRENT REPORTED ON FORM 8-K/A
         Date of Report (Date of Earliest Event Reported):  May 9, 1997


================================================================================
<PAGE>   2
                               ARTICLES OF MERGER

                                       OF

                               TIW SYSTEMS, INC.
                           (A CALIFORNIA CORPORATION)

                                 WITH AND INTO

                         VERTEX ACQUISITION CORPORATION
                             (A NEVADA CORPORATION)


           Pursuant to the provisions of Article 92A.200 of the Nevada General
Corporation Law, the undersigned corporation, VERTEX ACQUISITION CORPORATION, a
Nevada Corporation ("VAC"), as the surviving corporation in the merger of TIW
Systems, Inc., a California corporation ("TIW") with and into VAC hereby adopts
and submits the following Articles of Merger for the purpose of effecting a
merger of TIW with and into VAC in accordance with the provisions of the Nevada
General Corporation Law.

           1.   The name of each of the constituent corporations and the laws
under which such corporation was organized and the governing law of each are:

<TABLE>
<CAPTION>
                                                    State of
Name of Corporation                               Organization                   Governing Law
- -------------------                               ------------                   -------------
<S>                                                <C>                             <C>
TIW Systems, Inc.                                  California                      California

Vertex Acquisition Corporation                       Nevada                          Nevada

Vertex Communications Corporation                     Texas                          Texas
</TABLE>

           2.   A Plan of Merger has been adopted by each of the constituent
corporations.  A copy of the Plan of Merger is attached hereto as Exhibit "A"
and incorporated herein by this reference as if fully copied and set forth at
length herein.

           3.   Although the common stock of VAC's parent corporation, Vertex
Communications Corporation, a Texas corporation ("Vertex"), will be issued
pursuant to the terms and conditions set forth in the Plan of Merger adopted by
each of the constituent corporations, no vote of the shareholders of Vertex is
required to approve the Plan of Merger, to authorize the issuance of the
securities issued by Vertex pursuant to the Plan of Merger or to otherwise
approve the consummation of the transactions contemplated by the Plan of
Merger.

           4.   As to each of the constituent corporations, the approval of
whose shareholders is required, the number of outstanding shares of each class
or series of stock of such corporation entitled to vote, with other shares or
as a class, on the Plan of Merger are as follows:





ARTICLES OF MERGER - Page 1
<PAGE>   3
<TABLE>
<CAPTION>
                                                                                        Number of Shares
                                    Number of                                        Entitled to Vote as a
Name of Corporation            Shares Outstanding         Designation of Class          Class or Series   
- -------------------            ------------------         --------------------       ---------------------
<S>                                      <C>                     <C>                          <C>
TIW Systems, Inc.                        6,457,935               Common                       N/A
Vertex Acquisition                           1,000               Common                       N/A
Corporation
</TABLE>

           5.   The Plan of Merger was approved by the unanimous consent of the
sole shareholder of VAC.  As to TIW, the approval of whose shareholders is
required, the number of shares not entitled to vote only as a class, voted for
and against the Plan of Merger, respectively, and, if the shares of any class
or series are entitled to vote as a class, the number of shares of each such
class or series voted for and against the Plan of Merger, are as follows:


<TABLE>
<CAPTION>
                                                    Total                                    Number of   
                                                    Voted                                 Shares Entitled
                                     Total                      Total Not                        to      
      Name of Corporation          Voted For       Against        Voted        Class      Vote as a Class
      -------------------          ---------       -------        -----        -----      ---------------
                                                                                           Voted   Voted
                                                                                           For    Against
                                                                                           ---    -------
<S>                               <C>               <C>        <C>          <C>           <C>     <C>
TIW Systems, Inc.                 6,432,314         1,191      24,430       Common        N/A        N/A
</TABLE>

           6.   The Articles of Incorporation of VAC shall continue in full
force and effect as the Articles of Incorporation of the surviving corporation
until altered or amended, as provided by law, with the exception that the name
of VAC shall be changed to TIW Systems, Inc. pursuant to an amendment of
Article One of the Articles of Incorporation of VAC, which Article One is
hereby amended to read in its entirety as follows:

                                  ARTICLE ONE

                                      NAME

           The name of the corporation is TIW SYSTEMS, INC. (the
"Corporation").


           7.   The merger will become effective upon the issuance of the
certificate of merger by the Secretary of State in accordance with the
provisions of Articles 92A.240 of the Nevada General Corporation Law.





ARTICLES OF MERGER - Page 2
<PAGE>   4
           Dated June 11, 1997.

                                       VERTEX ACQUISITION CORPORATION
                                                                     
                                                                     
                                                                     
                                       By:  /s/ J. Rex Vardeman
                                            ------------------------------------
                                            J. REX VARDEMAN,   
                                            President          
                                                               
                                                               
                                       By:  /s/ James D. Carter
                                            ------------------------------------
                                            JAMES D. CARTER,   
                                            Secretary          



THE STATE OF TEXAS         )
                           )
COUNTY OF GREGG            )

           This instrument was acknowledged before me on the 11th day of June,
1997, by J. REX VARDEMAN and JAMES D.  CARTER, known to me to be the President
and the Secretary, respectively, of Vertex Acquisition Corporation, a Nevada
corporation, on behalf of and as the act of said corporation.


                                       /s/ Evalee B. Brown             
                                       -----------------------------------------
                                       Notary Public, State of Texas   
                                





ARTICLES OF MERGER - Page 3
<PAGE>   5
                                 PLAN OF MERGER


         THIS PLAN OF MERGER (the "Agreement") is made and entered into in
Kilgore, Gregg County, Texas by, between and among TIW SYSTEMS, INC., a
California corporation having its principal place of business in Santa Clara
County, California (the "Company"), VERTEX ACQUISITION CORPORATION, a Nevada
corporation ("VAC"), and VERTEX COMMUNICATIONS CORPORATION, a Texas corporation
having its principal place of business in Gregg County, Texas ("Vertex") on
this the 11th day of June, 1997 (the "Execution Date").


                                    RECITALS


         WHEREAS, the Company is currently engaged in the business of
manufacturing earth station satellite communications antenna, radio telescopes
and associated components (the "Acquired Business");

         WHEREAS, as of the Execution Date, Heldur Tonisson ("Tonisson") and
Rein Luik ("Luik") own approximately 45% and 21%. respectively, of all of the
issued and outstanding capital stock of the Company, subject to the community
property rights of their respective spouses, if any, and with respect to Luik,
excluding any beneficial ownership of any such shares arising from Luik being a
participant or beneficiary of the TIW Systems Incorporated Employee Stock
Ownership Trust (the "ESOT");

         WHEREAS, Tonisson and Luik are each hereinafter individually referred
to as a "Controlling Shareholder" and collectively as the "Controlling
Shareholders";

         WHEREAS, the remaining shares of the issued and outstanding capital
stock of the Company are owned by 18 shareholders (the "Minority
Shareholders");

         WHEREAS, the Controlling Shareholders and the Minority Shareholders
are sometimes referred to herein as the "Shareholders";

         WHEREAS, VAC is a wholly-owned subsidiary of Vertex;

         WHEREAS, the respective Boards of Directors of the Company, Vertex and
VAC have determined that the transactions contemplated by this Agreement are
desirable and in the best interests of such entities and their respective
shareholders;

         WHEREAS, the respective Board of Directors of the Company, Vertex and
VAC have approved the merger of the Company with and into VAC as a forward
triangular merger in accordance with the provisions of Sections 368(a)(1)(A)
and 368(a)(2)(D) of the Internal Revenue Code of 1986, as amended (the "Code"),
Articles 92A.005 et seq. of the Nevada General Corporation Law (the "NGCL"),
and Sections 1100 et seq. of the California General Corporation Law (the
"CGCL") upon the terms and conditions set forth in this Agreement (the
"Merger");

         WHEREAS, the parties intend that the Merger shall constitute for
United States federal income tax purposes a reorganization under the Code; and



PLAN OF MERGER - Page 1

<PAGE>   6
         WHEREAS, the parties desire to set forth the terms and conditions of
the Merger;

         NOW, THEREFORE, in consideration of the foregoing premises and the
mutual covenants and agreements herein contained, and for the purpose of
stating the terms and conditions of the Merger and the mode of effectuating the
same, the parties hereto have agreed, and do hereby agree, subject to the terms
and conditions hereinafter set forth, as follows:


                                   ARTICLE 1

                                TERMS OF MERGER

         1.1     Name, Address and Governing Law.  The name, address, place of
organization and governing law of each constituent corporation are as follows:


<TABLE>
<CAPTION>
                                                                                                                   Place of
                                                                                    Organization and
Name                                         Address                                 Governing Law 
- ----                                         -------                                 --------------
<S>                                          <C>                                       <C>
TIW Systems, Inc.                            2211 Lawson Avenue                        California
                                             Santa Clara, CA 95054
                                     
Vertex Acquisition Corporation               One East First Street                       Nevada
                                             Reno, Nevada 89501
                                     
Vertex Communications Corporation            2600 N. Longview Street                      Texas
                                             Kilgore, Texas 75662
</TABLE>                             


         The name, place of organization and governing law of VAC as the
surviving corporation shall be as stated above.

         1.2     Merger.  On the Effective Date (as hereinafter defined), in
accordance with the provisions of Articles 92A.005 et seq. of the NGCL,
Sections 1100 et seq. of the CGCL and Sections 368(a)(1)(A) and 368(a)(2)(D) of
the Code, the Company shall be merged with and into VAC, which shall be
sometimes referred to herein as the "Surviving Corporation," upon the terms and
subject to the conditions set forth in the subsequent provisions of this
Agreement.

         1.3     Effect of Merger.  VAC, as the Surviving Corporation in the
Merger, will continue to be governed by the laws of the State of Nevada and the
separate corporate existence of VAC and all of its rights, privileges,
immunities and franchises, public or private, and all of its duties and
liabilities as a corporation organized under the NGCL will continue unaffected
and unimpaired by the Merger.  At the close of business on the Effective Date
the existence of the Company as a distinct entity shall cease.  At that time
all rights, franchises and interests of the Company in and to every type of
property, whether real, personal or mixed, and chooses in action shall be
transferred to and vested in VAC by virtue of the Merger without any deed or
other transfer.  VAC, without any order or other action on the part of any
court or otherwise, shall possess all and singular the rights, privileges,
powers and franchises, and shall



PLAN OF MERGER - Page 2

<PAGE>   7
be subject to all the restrictions, disabilities and duties of the Company and
VAC, and all property, whether real, personal or mixed, of the Company and VAC,
and as to third parties all debts due to the Company or VAC on whatever
account, and all other things in action or belonging to each of said
corporations, shall be vested in VAC.  All property, rights, privileges, powers
and franchises, and all and every other interest of the Company or VAC as of
the Effective Date shall thereafter be the property of VAC to the same extent
and effect as such was of said constituent corporations prior to the Effective
Date, and the title to any real estate vested by deed or otherwise in the
Company and VAC shall not revert or be in any way impaired by reason of the
Merger; provided, however, that as to third parties all rights of creditors and
all liens upon any property of the Company or VAC shall thenceforth attach to
VAC and may be enforced against it to the same extent as if said debts,
liabilities, and duties had been incurred or contracted by VAC.  VAC shall
carry on business with the assets of the Company and VAC.  The established
offices and facilities of VAC and the Company immediately prior to the Merger
shall become the established offices and facilities of VAC.  Notwithstanding
the preceding, as between the Controlling Shareholders and VAC, the Controlling
Shareholders shall be liable for any Retained Liabilities (as defined in
Section 1.11 hereof) of the Company that are not discharged by the Company or
the Controlling Shareholders prior to the Effective Date in accordance with the
provisions of Section 1.11 hereof.

         1.4     Effective Date of Merger.  As soon as practicable following
the fulfillment or waiver of the conditions precedent to the Merger set forth
in Article 2 hereof, and provided that this Agreement has not been terminated
or abandoned pursuant to the applicable provisions of Article 3 hereof, the
Company and VAC will cause the Articles of Merger along with any other required
document to be filed with the Secretary of State of Nevada and the Secretary of
State of California pursuant to Article 92A.200 of the NGCL and Sections 1103
and 1108 of the CGCL, respectively.  The Merger shall become effective upon the
date (the "Effective Date") which is the later of the date of (i) the filing of
Articles of Merger with, and issuance of a Certificate of Merger by, the
Secretary of State of Nevada pursuant to Article 92A.200 of the NGCL, and (ii)
the filing of Articles of Merger with, and issuance of a Certificate of Merger
by, the Secretary of State of California pursuant to Sections 1103 and 1108 of
the CGCL (the "Effective Time").

         1.5     Disposition and Conversion of Shares.  Subject to the
provisions of this Section, at the Effective Time, by virtue of the Merger and
without any action on the part of VAC, Vertex, the Company or the shareholders
of any of the foregoing, the shares of the constituent corporations shall be
converted as follows:

                 (a)      VAC Shares.  Each share of the common stock, $.10 par
         value, of VAC issued and outstanding immediately prior to the
         Effective Time shall continue unchanged and remain issued and
         outstanding and shall be retained by the shareholders of VAC as shares
         of the Surviving Corporation.

                 (b)      Vertex Shares.  Each share of the common stock, $.10
         par value, of Vertex (the "Vertex Common Stock") issued and
         outstanding immediately prior to the Effective Time shall continue
         unchanged and remain issued and outstanding and retained by the
         holders thereof.

                 (c)      Company Shares.  All of the shares of the issued and
         outstanding common stock, without par value, of the Company (the "TIW
         Common Stock"), other than any shares held by any Company Subsidiary
         (as hereinafter defined), shall be converted into, and become


PLAN OF MERGER - Page 3

<PAGE>   8
         exchangeable for (i) an aggregate amount of 574,359 shares of Vertex
         Common Stock (the "Vertex Exchange Shares"), and (ii) cash in the
         aggregate amount of $7,892,824.00 (the "Cash Portion of the Merger
         Consideration"), subject to (x) the payment of cash for fractional
         shares or dissenting shares and (y) the payment of certain Retained
         Liabilities.  Any shares of the TIW Common Stock held by any Company
         Subsidiary shall be cancelled and extinguished without any conversion
         thereof and no payment of any kind shall be made with respect thereto.
         The number of the Vertex Exchange Shares shall not be adjusted for any
         increase or decrease in the market price of the Vertex Common Stock as
         reported on the Nasdaq Stock Market National Market System, subject to
         the provisions of Section 1.5(d) hereof.  The Vertex Exchange Shares
         and the Cash Portion of the Merger Consideration, subject to (i) the
         payment of cash for fractional shares or dissenting shares and (ii)
         the payment of the Retained Liabilities, shall be allocated to the
         Shareholders in proportion to their stock ownership in the Company.

                 (d)      No Dilution.  If, on or before the Effective Date,
         Vertex (i) declares any dividend payable in shares of Vertex Common
         Stock, or (ii) splits or combines or reclassifies the outstanding
         shares of Vertex Common Stock, the number of shares (or fraction of a
         share subject to the provisions of Section 1.5(e)(4) hereof) of Vertex
         Common Stock to be exchanged for each share of the outstanding TIW
         Common Stock will be appropriately adjusted.

                 (e)      Exchange of Company Capital Stock Certificates.

                          (1)     Delivery  of Vertex Exchange Shares.  On or
                 prior to the Closing Date, Vertex or VAC shall make available
                 to ChaseMellon Shareholder Services, L.L.C., as the transfer
                 agent of Vertex (the "Transfer Agent"), the certificates
                 representing the Vertex Exchange Shares along with the Cash
                 Portion of the Merger Consideration required to effect the
                 exchange referred to in Section 1.5(c) above.  The Vertex
                 Exchange Shares and the Cash Portion of the Merger
                 Consideration are hereinafter collectively referred to as the
                 "Merger Consideration."

                          (2)     Exchange of TIW Common Stock Certificates.
                 At the Effective Time, the stock transfer books of the Company
                 shall be closed as to the holders of the TIW Common Stock and
                 no transfer of the TIW Common Stock shall thereafter be made
                 or recognized.  At the Closing (or as soon as reasonably
                 practicable thereafter), the Shareholders shall surrender the
                 certificate or certificates representing the TIW Common Stock
                 issued and outstanding at the Effective Time (the "TIW
                 Certificates") to the Transfer Agent or to Vertex.  Upon the
                 surrender to the Transfer Agent or to Vertex of each TIW
                 Certificate and related stock power duly completed and
                 executed, the Transfer Agent or Vertex shall pay the holder of
                 such TIW Certificate the applicable Merger Consideration in
                 exchange therefor, and such TIW Certificate shall forthwith be
                 cancelled.  Until so surrendered and exchanged, each such TIW
                 Certificate shall represent solely the right to receive the
                 applicable allocable share of the Merger Consideration
                 therefor and any amounts to which the holder thereof is
                 entitled pursuant to Sections 1.5(e)(3) and 1.5(e)(4) hereof.
                 No interest shall be paid or accrued on the Merger
                 Consideration.  If the allocable share of the Merger
                 Consideration (or any portion thereof) is to be delivered to
                 any person other than the person in whose name the TIW
                 Certificate surrendered in exchange therefor is registered, it
                 shall be a condition to such exchange that (i) the TIW
                 Certificate so surrendered shall be properly endorsed or


PLAN OF MERGER - Page 4

<PAGE>   9
                 otherwise be in proper form for transfer and (ii) the person
                 requesting such exchange shall pay to the Transfer Agent any
                 transfer or other taxes required by reason of the payment of
                 the allocable share of the Merger Consideration to a person
                 other than the registered holder of the TIW Certificate
                 surrendered or establish to the satisfaction of the Transfer
                 Agent that such tax has been paid or is not applicable.
                 Vertex may impose such other reasonable conditions upon the
                 exchange of TIW Certificates as it may deem necessary or
                 desirable and as are consistent with the provisions of this
                 Agreement.  The Vertex Common Stock into which the TIW Common
                 Stock shall be converted pursuant to this Agreement and the
                 Merger shall be deemed to have been issued at the Effective
                 Time; provided, however, that, subject to applicable law, no
                 holder of an unsurrendered TIW Certificate shall be entitled,
                 until the surrender of such TIW Certificate, to vote the
                 shares of the Vertex Common Stock into which such holder's TIW
                 Common Stock shall have been converted.

                          (3)     Restriction on Receipt of Dividends.  Unless
                 and until a TIW Certificate is surrendered, dividends payable
                 to the holders of record of the Vertex Common Stock shall not
                 be paid to the holder of such TIW Certificate in respect of
                 the Vertex Common Stock represented thereby, but, subject to
                 applicable abandoned property, escheat, and similar laws,
                 there shall be paid to the holder thereof (i) upon surrender
                 of such TIW Certificate, the amount of any dividends, the
                 record date for the determination of the holders entitled to
                 which shall be after the Effective Time, which theretofore
                 shall have become payable with respect to the whole shares of
                 Vertex Common Stock represented by such TIW Certificate and
                 issued in exchange upon its surrender, but without interest on
                 such dividends, and (ii) after surrender of such TIW
                 Certificate, the amount of any dividends with respect to such
                 whole shares of Vertex Common Stock, the record date for the
                 determination of the holders entitled to which shall be after
                 the Effective Time but prior to the surrender of such TIW
                 Certificate, and the payment date of which shall be subsequent
                 to such surrender, such amount to be paid on such payment
                 date.

                          (4)     Fractional Shares.  No certificates or scrip
                 representing fractional shares of Vertex Common Stock shall be
                 issued upon the surrender for exchange of any TIW Certificate.
                 In lieu of any such fractional share of Vertex Common Stock,
                 each holder of a TIW Certificate whose aggregate number of
                 shares of TIW Common Stock are not convertible into a whole
                 number of shares of Vertex Common Stock shall be entitled to
                 receive from the Transfer Agent or Vertex, upon surrender of
                 such holder's TIW Certificates for exchange as provided above,
                 an amount of cash rounded to the nearest cent (without
                 interest) determined by multiplying such fractional interest
                 by $19.50.  After the Execution Date, Vertex shall deposit
                 with the Transfer Agent, as and when required, cash sufficient
                 for the Transfer Agent to make payment of cash in lieu of
                 fractional shares in accordance with this Section 1.5(e)(4).

                          (5)     Termination of Transfer Agent's Obligations.
                 In the event that all the TIW Common Stock has not been
                 surrendered for exchange as stated herein by the first
                 anniversary of the Effective Date, then promptly following the
                 date which is one year after the Effective Date, the Transfer
                 Agent shall deliver to Vertex all cash, certificates, and
                 other documents and instruments in its possession relating to
                 the transactions described in this Agreement, and the Transfer
                 Agent's duties with respect thereto shall

PLAN OF MERGER - Page 5
<PAGE>   10
                 terminate.  Thereafter, each holder of a TIW Certificate may
                 surrender such TIW Certificate directly to Vertex and (subject
                 to applicable abandoned property, escheat, and similar laws)
                 receive in exchange the applicable allocable share of the
                 Merger Consideration therefor and any amounts to which such
                 holder is entitled pursuant to Sections 1.5(e)(3) and
                 1.5(e)(4) hereof, but such holder shall have no greater rights
                 against Vertex than may be accorded to general creditors of
                 Vertex under applicable law.  Notwithstanding anything in this
                 Agreement to the contrary, neither the Transfer Agent nor any
                 party hereto shall be liable to a holder of shares of TIW
                 Common Stock for any cash or other property delivered to a
                 public official pursuant to applicable abandoned property,
                 escheat, or similar laws.

                          (6)     Lost TIW Certificates.  In the event any TIW
                 Certificate shall have been lost, stolen, or destroyed, upon
                 the making of an affidavit of that fact by the person claiming
                 such TIW Certificate to be lost, stolen, or destroyed, Vertex
                 shall issue or cause to be issued in exchange for such lost,
                 stolen, or destroyed TIW Certificate the allocable share of
                 the  Merger Consideration deliverable in respect thereof as
                 determined in accordance with Section 1.5(c).  When
                 authorizing the issue of such allocable share of the Merger
                 Consideration in exchange therefor, Vertex may, in its
                 discretion and as a condition precedent to the issuance
                 thereof, require the owner of such lost, stolen, or destroyed
                 TIW Certificate to give Vertex a bond in such sum as it may
                 direct as indemnity against any claim that may be made against
                 Vertex or the Surviving Corporation with respect to the TIW
                 Certificate alleged to have been lost, stolen, or destroyed.

                          (7)     Withholding.  Vertex shall be entitled to
                 deduct and withhold from the allocable share of the Merger
                 Consideration otherwise payable pursuant to this Agreement to
                 any holder of a TIW Certificate such amounts as Vertex is
                 required to deduct and withhold with respect to the making of
                 such payment under the Code or any provision of state, local,
                 or foreign tax law.  To the extent that amounts are so
                 withheld by Vertex, such withheld amounts shall be treated for
                 all purposes of this Agreement as having been paid to the
                 holder of the TIW Certificate in respect of which such
                 deduction and withholding was made by Vertex.

                 (f)      Inspection of Books and Records.  The Shareholders
         shall have the right, at the expense of the Shareholders, to inspect
         the books and records of Vertex to verify any adjustment required to
         be made pursuant to the foregoing provisions of this Section 1.5 in
         the number of shares of the Vertex Common Stock owned by the
         Shareholders during the normal business hours of Vertex upon
         reasonable request to Vertex.

         1.6     Cancellation of Options and Warrants.  At the Effective Time,
each outstanding and unexercised stock option and warrant to acquire shares of
TIW Common Stock to the extent not previously exercised shall automatically
terminate and be of no further force or effect, and the holder thereof shall
not be entitled to receive any compensation for such terminated stock option or
warrant.

         1.7     Articles of Incorporation of Surviving Corporation.  The
Articles of Incorporation of VAC, as existing on the Effective Date, shall
continue in full force and effect as the Articles of Incorporation of the
Surviving Corporation until altered or amended as provided by law, with the
exception that as part of the Articles of Merger the name of VAC shall be
changed to TIW Systems, Inc.


PLAN OF MERGER - Page 6

<PAGE>   11
         1.8     Bylaws of Surviving Corporation.  The Bylaws of VAC, as
existing on the Effective Date, shall continue in full force and effect as the
Bylaws of the Surviving Corporation until altered, amended or repealed as
provided in such Bylaws or as provided by law.

         1.9     Directors of Surviving Corporation.  The directors of the
Surviving Corporation as of the Effective Date shall be and become J. Rex
Vardeman, James D. Carter, and Rein Luik, until their successors shall be duly
elected and qualified or until their sooner death, resignation or removal.
Vertex as the sole shareholder of VAC hereby agrees to vote its shares of VAC
so that the foregoing individuals shall be elected as the directors of VAC
until the first annual or special meeting of the shareholders of VAC after the
Effective Date.

         1.10    Officers of Surviving Corporation.  The officers of the
Surviving Corporation as of the Effective Date shall be as follows:

<TABLE>
                          <S>                                                <C>
                          J. Rex Vardeman . . . . . . . . . . . . .          Chairman of the Board

                          Rein Luik . . . . . . . . . . . . . . . .          President and Chief Executive Officer

                          Louis Becker  . . . . . . . . . . . . . .          Executive Vice President

                          Edward F. Kurz  . . . . . . . . . . . . .          Vice President and Chief Financial Officer

                          James D. Carter . . . . . . . . . . . . .          Secretary and Treasurer
</TABLE>

Such individuals shall serve in such capacities until their successors shall be
duly elected and qualified or until their sooner death, resignation or removal.

         1.11    Retained Liabilities.  Notwithstanding the provisions of
Section 1.3 hereof, as between the Company, the Controlling Shareholders and
VAC, VAC will not assume, and will not discharge or otherwise be liable for the
Retained Liabilities and as between the Company, the Controlling Shareholders
and VAC none of the Assets acquired as a result of the Merger shall be or
become obligated or subject to any Retained Liability.  As used herein, the
term Retained Liabilities shall mean only the following liabilities:

                 (a)      The liabilities or obligations of the Company for
         periods prior to the Effective Date other than (i) those identified in
         the Company's Consolidated Balance Sheet, dated December 31, 1996, as
         audited and certified by the Company's independent auditors, Deloitte
         & Touche LLP (the "1996 TIW Balance Sheet") to the extent set forth
         therein, (ii) those identified in writing to VAC prior to the
         Execution Date to the extent set forth therein, and (iii) those
         incurred by the Company since the date of the 1996 TIW Balance Sheet
         in the Ordinary Course of Business;

                 (b)      Federal, state or local tax liabilities or
         obligations of the Company, including, without limitation, any income
         tax, any tax recapture, and any FICA, withholding tax, workers'
         compensation and any and all other taxes accrued on or before the
         Effective Date other than those identified in the 1996 TIW Balance
         Sheet to the extent set forth therein and fully funded by a reserve
         therefor;


PLAN OF MERGER - Page 7
<PAGE>   12
                 (c)      Liabilities or obligations of the Company or the
         Shareholders for brokerage or other commissions, if any, relating to
         the Merger, this Agreement or to the transactions contemplated
         hereunder; and

                 (d)      The legal fees incurred by the Company in connection
         with the transactions contemplated by this Agreement to the extent
         that such legal fees exceed the sum of $65,000.00.

                 The Retained Liabilities identified in subparagraphs (a), (b)
         and (c) above shall be discharged by the Company prior to the
         Effective Date out of the assets of the Company.  The Retained
         Liability identified in subparagraph (d) above shall be satisfied by
         the Controlling Shareholders prior to the Closing Date (as hereinafter
         defined).  Any Retained Liability not satisfied as stated above shall
         be and remain the sole responsibility of the Controlling Shareholders
         and as between the Controlling Shareholders and VAC, VAC shall have no
         responsibility or liability for the payment of such Retained
         Liabilities.


                                   ARTICLE 2

                         CONDITIONS PRECEDENT TO MERGER

         2.1     Conditions Precedent to Obligations of VAC and Vertex.  The
obligations of VAC and Vertex hereunder are, at the option of VAC or Vertex, as
applicable, subject to and conditioned upon the satisfaction and fulfillment by
the Company and the Shareholders, as applicable, on or prior to the Closing
Date, of each of the following conditions, unless waived by VAC or Vertex as
provided herein:

                 (a)      Absence of Litigation.  No order, stay, judgment, or
         decree shall have been issued by any court or any governmental entity
         restraining or prohibiting the consummation of the transactions
         contemplated by this Agreement.  No action or proceeding before a
         court or any other governmental agency or body shall have been
         instituted or threatened to restrain or prohibit the consummation of
         the transactions herein contemplated or which would in any material
         way adversely affect the assets, business or prospects of the Company
         or any Company Subsidiary (as hereinafter defined), and no
         governmental agency or body shall have taken any other action or made
         any request of the Company, VAC or Vertex which would have a material
         adverse effect on the transactions contemplated hereby.  As used
         herein, the term "Company Subsidiaries" shall mean all those
         corporations, associations or other business entities of which the
         entity in question either (i) owns or controls 50% or more of the
         outstanding equity securities either directly or through an unbroken
         chain of entities as to each of which 50% or more of the outstanding
         securities is owned directly or indirectly by its parent (provided,
         there shall not be included any such entity the equity securities of
         which are owned or controlled in a fiduciary capacity), or (ii) in the
         case of partnerships or joint venturers, serves as a general partner
         or a joint venturer.

                 (b)      No Adverse Change.  No material adverse change in the
         results of operations, financial condition or business of the Company
         and the Company Subsidiaries shall have occurred, and neither the
         Company nor the Company Subsidiaries shall have suffered any material
         change, loss or damage to the assets, business or prospects of such
         entity, whether or not covered by insurance, since the date of the
         1996 TIW Balance Sheet.

PLAN OF MERGER - Page 8
<PAGE>   13
                 (c)      Due Diligence Review.  The due diligence review to be
         conducted by Vertex prior to the Closing (as hereinafter defined) with
         respect to the assets, business, operations, income, prospects or
         condition (financial or otherwise) of the Company and the Company
         Subsidiaries and the representations, warranties and covenants of the
         Company and the Controlling Shareholders set forth in that certain
         Agreement and Plan of Reorganization dated May __, 1997 among Vertex,
         VAC, the Company, the Controlling Shareholders and the ESOT (the
         "Reorganization Agreement") shall be completed and the results thereof
         shall not have caused Vertex or its representatives to become aware of
         any material facts relating thereto, which, in the good faith judgment
         of Vertex, makes it inadvisable for Vertex to proceed with the
         transactions contemplated hereby.

                 (d)      Dissenting Shareholders.  Shareholders owning not
         less than ninety-two percent (92%) of the issued and outstanding
         capital stock of the Company shall have approved the Reorganization
         Agreement and the Merger, so that the dissenting shareholders, if any,
         shall not own more than eight percent (8%) of the issued and
         outstanding capital stock of the Company.

                 (e)      Minimum Value of Vertex Exchange Shares.  The
         aggregate fair market value of the Vertex Exchange Shares on the
         Effective Date, based upon the closing sales price of a share of
         Vertex Common Stock as listed on the Nasdaq Stock Market, National
         Market System, shall not be less than 40% of the aggregate fair market
         value of the Merger Consideration as of the Effective Date.  In
         addition, the aggregate fair market value of the Vertex Exchange
         Shares on the Effective Date, based upon the closing sales price of a
         share of Vertex Common Stock as listed on the Nasdaq Stock Market,
         National Market System, received by the holders of the Historic Shares
         of the Company (as hereinafter defined) shall not be less than 40% of
         the aggregate fair market value of the Vertex Common Stock and cash
         received, or deemed received, by the Shareholders or the Company after
         taking into consideration (i) any decrease in the fair market value of
         a share of Vertex Common Stock as of the Effective Date from the fair
         market value of a share of Vertex Common Stock as of January 21, 1997,
         said date being the date the Letter of Intent pertaining to the
         transactions contemplated by this Agreement was executed by the
         parties hereto, (ii) any cash paid to a Shareholder in lieu of a
         fractional share of Vertex Common Stock, (iii) the aggregate amount of
         that part of the Merger Consideration payable to any record or
         beneficial owner of TIW Common Stock who voted against the Merger, and
         (iv) the fair market value of the unallocated shares of TIW Common
         Stock owned by the ESOT which were surrendered by the ESOT to the
         Company after the Execution Date in payment of the outstanding
         indebtedness of the ESOT to the Company.  For purposes of this
         Agreement, the Historic Shares of the Company shall mean all shares of
         TIW Common Stock outstanding at any time after the Execution Date
         other than the following:  (i) the 50,000 shares of TIW Common Stock
         acquired by Robert Wallace by exercising a stock option previously
         granted to him by the Company, (ii) the 25,000 shares of TIW Common
         Stock acquired by John Griffiths by exercising a stock option
         previously granted to him by the Company, (iii) the allocated but
         unvested shares of TIW Common Stock held of record by the ESOT, and
         (iv) the unallocated shares of TIW Common Stock surrendered by the
         ESOT after the Execution Date as payment against the outstanding
         indebtedness of the ESOT to the Company.

                 (f)      Payment of ESOP Loan.  Vertex shall have received
         evidence from the Company that the outstanding indebtedness
         (principal, plus all accrued interest thereon to date of payment) of
         the ESOT to the Company has been paid in full by the ESOT.

PLAN OF MERGER - Page 9

<PAGE>   14
         2.2     Conditions Precedent to Obligations of the Company.  The
obligations of the Company and the Shareholders hereunder are, at the option of
the Company and the Shareholders, subject to and conditioned upon the
satisfaction and fulfillment by VAC or Vertex, as applicable, on or prior to
the Closing Date, of each of the following conditions, unless waived by the
Company as provided herein:

                 (a)      Delivery of Merger Consideration.  VAC or Vertex
         shall have delivered to either the Transfer Agent, Luik or counsel to
         the Company a duly executed stock certificate or certificates
         evidencing the Vertex Exchange Shares to be issued to the Shareholders
         in accordance with the provisions of Section 1.5 hereof along with
         certified or cashier's checks or wire transfers in the aggregate
         amount of the Cash Portion of the Merger Consideration and a letter of
         instructions directing either the Transfer Agent, Luik or counsel to
         the Company, as applicable, to deliver the certificates evidencing the
         ownership of the Vertex Exchange Shares and the Cash Portion of the
         Merger Consideration to the respective Shareholders in accordance with
         the provisions of Section 1.5 hereof.  VAC shall have delivered a copy
         of the aforesaid letter of instructions to the Controlling
         Shareholders.

                 (b)      Absence of Litigation.  No order, stay, judgment or
         decree shall have been issued by any court or governmental entity
         restraining or prohibiting the consummation of the transactions
         contemplated by this Agreement.  No action or proceeding before a
         court or any other governmental agency or body shall have been
         instituted or threatened to restrain or prohibit the consummation of
         the transactions herein contemplated or which would in any material
         way adversely affect the assets, business or prospects of Vertex, and
         no governmental agency or body shall have taken any other action or
         made any request of the Company, VAC or Vertex which would have a
         material adverse effect on the transactions contemplated hereby.

                 (c)      No Adverse Change.  No material adverse change in the
         results of operations, financial condition or business of VAC or
         Vertex shall have occurred, and VAC and Vertex shall not have suffered
         any material change, loss or damage to their respective assets,
         whether or not covered by insurance, since March 17, 1997 (the date of
         organization of VAC) in the case of VAC and since September 30, 1996
         in the case of Vertex.

                 (d)      Shareholder Approval.  The Reorganization Agreement
         and the Merger shall have been duly and validly adopted and approved
         by the requisite vote of the holders of the TIW Common Stock in
         accordance with the Articles of Incorporation and Bylaws of the
         Company.

                 (e)      Minimum Value of Vertex Exchange Shares.  The
         aggregate fair market value of the Vertex Exchange Shares on the
         Effective Date, based upon the closing sales price of a share of
         Vertex Common Stock as listed on the Nasdaq Stock Market, National
         Market System, shall not be less than 40% of the aggregate fair market
         value of the Merger Consideration as of the Effective Date.  In
         addition, the aggregate fair market value of the Vertex Exchange
         Shares on the Effective Date, based upon the closing sales price of a
         share of Vertex Common Stock as listed on the Nasdaq Stock Market,
         National Market System, received by the holders of the Historic Shares
         of the Company (as hereinafter defined) shall not be less than 40% of
         the aggregate fair market value of the Vertex Common Stock and cash
         received, or deemed received, by the Shareholders or the Company after
         taking into consideration (i) any decrease in the fair market value of
         a share of Vertex Common Stock as of the Effective Date from the fair
         market value of a share of Vertex Common Stock as of January 21, 1997,
         said date being the date the



PLAN OF MERGER - Page 10
<PAGE>   15
         Letter of Intent pertaining to the transactions contemplated by this
         Agreement was executed by the parties hereto, (ii) any cash paid to a
         Shareholder in lieu of a fractional share of Vertex Common Stock,
         (iii) the aggregate amount of that part of the Merger Consideration
         payable to any record or beneficial owner of TIW Common Stock who
         voted against the Merger, and (iv) the fair market value of the
         unallocated shares of TIW Common Stock owned by the ESOT which were
         surrendered by the ESOT to the Company after the Execution Date in
         payment of the outstanding indebtedness of the ESOT to the Company.
         For purposes of this Agreement, the Historic Shares of the Company
         shall mean all shares of TIW Common Stock outstanding at any time
         after the Execution Date other than the following:  (i) the 50,000
         shares of TIW Common Stock acquired by Robert Wallace by exercising a
         stock option previously granted to him by the Company, (ii) the 25,000
         shares of TIW Common Stock acquired by John Griffiths by exercising a
         stock option previously granted to him by the Company, (iii) the
         allocated but unvested shares of TIW Common Stock held of record by
         the ESOT, and (iv) the unallocated shares of TIW Common Stock
         surrendered by the ESOT after the Execution Date as payment against
         the outstanding indebtedness of the ESOT to the Company.


                                   ARTICLE 3

                                  TERMINATION

         3.1     Termination.

                 (a)      Termination Prior to Effective Date.  This Agreement
         may be terminated and the Merger may be abandoned at any time prior to
         the Effective Date:

                          (1)     By mutual written consent of Vertex and the 
                 Company; or

                          (2)     By Vertex on the one hand or the Company on
                 the other hand, if any court of competent jurisdiction in the
                 United States or other United States governmental body or any
                 regulatory agency in the United States shall have issued an
                 order, decree, regulation or ruling or taken any other action
                 restraining, enjoining or otherwise prohibiting the
                 transactions contemplated hereby and such order, decree,
                 regulation, ruling or other action shall not have been vacated
                 or reversed or set aside on appeal, with prejudice against the
                 party seeking to restrain the transaction.

                 (b)      Termination Prior to Closing Date.  This Agreement
         may be terminated and the Merger may be abandoned at any time prior to
         the Closing Date:

                          (1)     By either Vertex on the one hand or the
                 Company on the other hand, if the Closing shall not have
                 occurred by June 30, 1997, provided that the failure to
                 consummate the transactions contemplated hereby is not
                 primarily a result of the failure by the party so electing to
                 terminate the Agreement to perform any of its obligations
                 hereunder;

                          (2)     By Vertex in the event that one or more of
                 the conditions set forth in Section 2.1 hereof is not
                 satisfied at or prior to the Closing; and


PLAN OF MERGER - Page 11
<PAGE>   16
                          (3)     By the Company in the event that one or more
                 of the conditions set forth in Section 2.2 hereof is not
                 satisfied at or prior to the Closing.

         The date on which this Agreement is terminated pursuant to this
section is herein referred to as the "Termination Date."

         3.2     Effect of Termination.  In the event that this Agreement shall
be terminated pursuant to the provisions of Section 3.1 hereof, all obligations
of the parties hereto under the Agreement shall terminate and there shall be no
liability, except for any breach of this Agreement prior to such termination,
of any party to another party.  In the event that VAC shall fail to consummate
the Merger in accordance with the terms and conditions of this Agreement, for
any reason whatsoever other than the Company's default hereunder or pursuant to
a right of termination granted Vertex in Section 3.1 hereof, the Company may
(i) enforce specific performance of this Agreement, or (ii) terminate this
Agreement and obtain such legal or equitable relief to which the Company may be
entitled, in law or in equity, as a result of such breach of Vertex.  In the
event the Company shall fail to consummate the Merger in accordance with the
terms and conditions of this Agreement for any reason whatsoever other than
Vertex's default hereunder or pursuant to a right of termination granted the
Company in Section 3.1 hereof, Vertex may (i) enforce specific performance of
this Agreement, or (ii) terminate this Agreement and obtain such legal or
equitable relief to which Vertex may be entitled, in law or in equity, as a
result of such breach of the Company.


                                   ARTICLE 4

                               GENERAL PROVISIONS

         4.1     Closing.  Subject to the provisions of Sections 2.1 and 2.2
hereof, the closing of the transactions contemplated hereby (the "Closing")
shall take place at the offices of Vertex's counsel, Thompson & Knight, P.C.,
1700 Pacific Avenue, Suite 3300, Dallas, Texas 75201, at 10:00 a.m. Central
Daylight Time, on June 11, 1997, or at such other place, date or time as the
parties may mutually agree upon in writing for the Closing to take place.  The
date on which the Closing occurs is herein referred to as the "Closing Date."

         4.2     Headings.  The section and paragraph headings or titles herein
are for convenience and do not limit the scope or effect of any provision of
this Agreement.

         4.3     Binding Agreement.  This Agreement shall be binding upon and
shall inure to the benefit of the parties and their respective successors and
assigns subject to the terms and conditions set forth in the Reorganization
Agreement; provided, however, that this Agreement may not be assigned by any
party without the written consent of the other party.

         4.4     Amendments.  This Agreement may be amended only by an
instrument in writing executed by all parties hereto.

         4.5     Counterparts.  This Agreement may be executed in one or more
counterparts all of which shall be considered one and the same agreement and
shall become effective when one or more counterparts have been signed by each
of the parties and delivered to the other parties.


PLAN OF MERGER - Page 12

<PAGE>   17
         4.6     Governing Law.  This Agreement shall be governed by, and
construed in accordance with, the laws of the State of Texas without regard to
the principles of conflicts of laws thereof.


         IN WITNESS THEREOF, each of the undersigned corporations has caused
this Agreement to be signed in its corporate name by its duly authorized
officer as of the 11th day of June, 1997.




                                   COMPANY:
                           
                                   TIW SYSTEMS, INC.
                           
                           
                                   By: /s/ Rein Luik 
                                       -----------------------------------------
                                       REIN LUIK,
                                       President and Chief Executive Officer
                                      
                           
                                   VAC:
                           
                                   VERTEX ACQUISITION CORPORATION
                           
                           
                           
                                   By: /s/ James D. Carter          
                                       -----------------------------------------
                                       JAMES D CARTER,
                                       Vice President
                           
                           
                                   VERTEX:
                           
                                   VERTEX COMMUNICATIONS CORPORATION
                           
                           
                                   By: /s/ J. Rex Vardeman          
                                       -----------------------------------------
                                       J. REX VARDEMAN,
                                       President and Chief Executive Officer

PLAN OF MERGER - Page 13

<PAGE>   1
                                                                    EXHIBIT 99.1


================================================================================
                       VERTEX COMMUNICATIONS CORPORATION

                                  EXHIBIT 99.1
                                       TO
                          CURRENT REPORT ON FORM 8-K/A
         Date of Report (Date of Earliest Event Reported):  May 9, 1997

================================================================================
<PAGE>   2
                         EXECUTIVE EMPLOYMENT AGREEMENT


         This Executive Employment Agreement (the "Agreement") by and between
TIW SYSTEMS, INC., a Nevada corporation formerly known as Vertex Acquisition
Corporation and having its principal place of business in Santa Clara, Santa
Clara County, California (the "Company"), and REIN LUIK (the "Executive"), a
resident of Santa Clara, Santa Clara County, California, is made and entered
into in Santa Clara, California, effective as of the 11th day of June, 1997
(the "Effective Date").


                              W I T N E S S E T H:


         WHEREAS, on even date herewith TIW Systems, Inc., a California
corporation ("TIW") merged with and into the Company with the Company being the
surviving corporation;

         WHEREAS, the Executive is a founder of TIW and currently serves as the
President and Chief Executive Officer of TIW, and the Board of Directors of the
Company (the "Board") recognizes that the Executive's participation in the
management of the Company is vital to the continued growth and success of the
Company; and

         WHEREAS, the Board desires to provide for the continued employment of
the Executive, subject to the terms and conditions herein provided; and

         WHEREAS, the Executive is willing to commit himself to continue to
serve the Company in the respective capacities hereinafter stated, subject to
the terms and conditions herein provided;

         NOW, THEREFORE, in consideration of the premises and the respective
covenants and agreements of the parties herein contained, and intending to be
legally bound hereby, the parties hereto hereby covenant and agree as follows:


                                       1

                              TERMS OF EMPLOYMENT

         1.1     EMPLOYMENT.  The Company hereby employs the Executive as the
President and Chief Executive Officer of the Company for and during the term
hereof, or as such other executive officer of the Company as the Board may
designate from time to time during the term hereof, subject to the discretion
of the Board and the terms and conditions hereof.  The Executive hereby accepts
such employment pursuant to the terms and conditions set forth in this
Agreement.

         1.2     DUTIES OF EXECUTIVE.  The Executive shall serve and perform in
the capacities described in Section 1.1 hereof and shall have such duties,
responsibilities, and authorities as are designated for such offices pursuant
to the Bylaws, as amended, of the Company, and as may be reasonably assigned to
the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 1
<PAGE>   3
Executive from time to time by the Board; provided, however, the Executive
shall, during the term hereof, continuously have and retain such duties,
responsibilities, and authorities which are at least as significant in scope
and substance as the duties, responsibilities, and authorities required of the
Executive's respective offices and positions with the Company as of the
Effective Date.  Subject to the discretion of the Board, the Executive shall,
and shall have commensurate authority to, direct, manage, supervise and control
the business, affairs and property of the Company, including but not limited
to:  managing and coordinating the business operations and activities of the
Company and its divisions and subsidiaries; promulgating, approving and
implementing operating plans and administrative policies and fostering economy
throughout the Company and its divisions and subsidiaries; acting as the
principal public relations officer of the Company; approving the addition,
elimination and/or modification of management and non-management positions and
related personnel within the Company and its divisions and subsidiaries;
approving salary and wage structures; and performing any and all other duties
as the Executive shall deem necessary or appropriate for the efficient
management and operation of the Company's business.  The Executive shall report
and be responsible to the Board.

         The Executive agrees to devote the Executive's full time, best
efforts, abilities, knowledge and experience to the faithful performance of the
duties, responsibilities, and authorities which may be reasonably assigned to
the Executive and which are consistent with the Executive's executive offices
described under Section 1.1 of this Agreement.  Notwithstanding the preceding,
the Executive may, without being in violation of the Executive's obligations
hereunder, (i) serve on corporate, civic or charitable boards, or committees
which are not engaged in business in competition with the Company or any
subsidiary thereof, and (ii) invest the Executive's personal assets in such
form or manner as will not require any material services by the Executive in
the operation of the entities in which such investments are made, provided the
Executive shall use his best efforts to pursue such activities in such a manner
so that such activities shall not prevent the Executive from fulfilling his
obligations to the Company hereunder.

         1.3     TERM.  This Agreement shall become effective as of the
Effective Date and shall continue in force and effect for successive three-year
periods from each successive day thereafter, unless sooner terminated as
provided in Section 1.8 of this Agreement.  The term of this Agreement is
sometimes hereinafter referred to as the "Employment Period."

         1.4     DIRECTORSHIP.  The Executive agrees to serve as a Director of
the Company during the Employment Period, if so elected by the shareholders of
the Company; provided, however, that the Company shall indemnify the Executive
for any and all liabilities incurred by the Executive in connection with
serving the Company in any and all such capacities, to the maximum extent
permitted by applicable state law, and in any case on a basis no less favorable
than is currently provided to other members of the Company's Board.

         1.5     PLACE OF PERFORMANCE.  In connection with the Executive's
employment by the Company during the Employment Period, the Executive shall be
based and the Executive's services shall be performed in Santa Clara, Santa
Clara County, California, at the location where the Executive was employed
immediately preceding the Effective Date hereof, or at any office or location
not more than thirty (30) miles from Santa Clara, California, except for
reasonable travel required in connection with the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 2
<PAGE>   4
Company's business to an extent substantially consistent with the Executive's
business travel obligations to TIW as of the Effective Date hereof.

         1.6     COMPENSATION.  The Company shall pay the Executive, as full
compensation for services rendered by the Executive under this Agreement, as
follows:

                 (a)      ANNUAL BASE SALARY.  The Company shall pay the
         Executive an annual base salary (the "Annual Base Salary") of TWO
         HUNDRED TEN THOUSAND AND NO/100 DOLLARS ($210,000.00) per year, or
         such higher Annual Base Salary as may be determined from time to time
         during the term hereof in accordance with the provisions of subsection
         (b) of this Section 1.6 by the Compensation Committee of the Board or
         the Board, in its sole discretion, as applicable, prorated for any
         partial period of employment.  Such Annual Base Salary shall be
         subject to all appropriate federal and state withholding and payroll
         taxes and shall be paid by the Company to the Executive in equal
         bi-weekly installments in accordance with the regular payroll policies
         and practices of the Company or in such other periodic installments
         and on such days during the month as the Company and the Executive
         shall mutually determine.  The Company's compensation of the Executive
         by payments of the Annual Base Salary pursuant to this Section 1.6(a)
         shall not be deemed exclusive and shall not prevent the Executive from
         participating in any other compensation or benefit plan of the
         Company, nor shall such compensation in any way limit or reduce any
         other obligation of the Company hereunder; and, except to the extent
         specifically set forth herein, no other compensation, benefit or
         payment hereunder shall in any way limit or reduce the obligation of
         the Company to pay the Annual Base Salary to the Executive during the
         term of this Agreement.

                 (b)      ADJUSTMENTS TO ANNUAL BASE SALARY.  The Annual Base
         Salary set forth in Section 1.6(a) of this Agreement shall be subject
         to adjustment annually, effective as of October 1 of each fiscal year
         of the Company during the term of this Agreement, beginning with the
         fiscal year commencing October 1, 1998, to reflect increases thereof,
         if any, authorized and approved by the Compensation Committee of the
         Board or the Board, as applicable.  For purposes of this Agreement,
         any reference to "Annual Base Salary" herein shall mean the
         Executive's Annual Base Salary, as adjusted, as applicable.

                 (c)      ANNUAL BONUS COMPENSATION.  In addition to the Annual
         Base Salary set forth in Section 1.6(a) hereof and any other amounts
         of compensation payable to the Executive pursuant to any other
         provisions of this Agreement, the Company shall also pay the Executive
         discretionary annual bonus compensation ("Annual Bonus Compensation")
         in an amount, if any, determined by the Board and the Compensation
         Committee of the Board to be proper and appropriate for each fiscal
         year of the Company during the term of this Agreement.  Such Annual
         Bonus Compensation shall be based upon such factors as the Board or
         the Compensation Committee of the Board shall deem appropriate and
         consistent with factors applicable to other executive officers of the
         Company, including (i) the Executive's contributions to the success of
         the business operations and the consolidated net- after-tax profits of
         the Company, its divisions and its subsidiaries for each fiscal year
         of the Company during the term hereof, as determined in accordance
         with generally accepted accounting principles, (ii) the consolidated
         revenues of the Company, its divisions and its subsidiaries for each
         fiscal year of the Company, and (iii) the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 3
<PAGE>   5
         general overall economic performance of the Company, its divisions and
         its subsidiaries for each fiscal year of the Company.  Such Annual
         Bonus Compensation, if any, shall be paid by the Company to the
         Executive in the manner set forth in the resolution of the Board or
         the Compensation Committee of the Board, as applicable, authorizing
         and declaring the payment of such Annual Bonus Compensation to the
         Executive (the "Bonus Resolution").  Notwithstanding anything herein
         to the contrary, the Executive shall not be entitled to any Annual
         Bonus Compensation for any fiscal year of the Company or any part
         thereof during the term of this Agreement unless and until such Annual
         Bonus Compensation is determined and declared by the Board or the
         Compensation Committee of the Board, as applicable.

         1.7     EMPLOYMENT BENEFITS.  In addition to the Annual Base Salary
and any Annual Bonus Compensation payable to the Executive hereunder, the
Executive shall be entitled to the following benefits upon satisfaction by the
Executive of the eligibility requirements therefor, subject to the following
limitations:

                 (a)      SICK LEAVE BENEFITS AND DISABILITY INSURANCE.  Unless
         this Agreement is terminated pursuant to the provisions of Section
         1.8(a)(2) hereof, the Executive shall be paid sick leave benefits at
         the Executive's then prevailing Annual Base Salary rate during the
         Executive's absence due to illness or other temporary incapacity,
         reduced by the amount, if any, of worker's compensation, social
         security entitlement or disability benefits, if any, under the
         Company's group disability insurance plan, if any.

                 (b)      HOSPITALIZATION, ACCIDENT, MAJOR MEDICAL AND DENTAL
         INSURANCE.  During the Employment Period, the Company, at its own
         expense, shall provide the Executive (and all dependents of the
         Executive at the request and expense of the Executive) with group
         hospitalization, group accident, major medical, and disability
         insurance in amounts of coverage comparable to the coverage, if any,
         provided other executive officers of the Company.

                 (c)      VACATIONS.  The Executive shall be entitled to a
         reasonable paid vacation of not less than twenty (20) business days
         each calendar year during the Employment Period, exclusive of holidays
         and weekends, which vacation shall be taken by the Executive in
         accordance with the business requirements of the Company at the time
         and its vacation plans, policies and practices as applied to executive
         officers of the Company then in effect relative to this subject. The
         Executive shall also be entitled to compensation in respect of earned
         or accrued but unused vacation time based on the Executive's Annual
         Base Salary applicable at the time and to all paid holidays granted by
         the Company to its executive officers.

                 (d)      EMPLOYMENT FACILITIES.  During the Employment Period,
         the Company shall provide, at its expense, appropriate and adequate
         office space, furniture, communications, stenographic and
         word-processing equipment, supplies, personnel (including
         professional, clerical, support and other personnel) and such other
         facilities and services as shall be suitable to the Executive's
         position and adequate for the Executive's use in performing the
         Executive's duties and responsibilities under this Agreement.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 4
<PAGE>   6
                 (e)      OTHER EMPLOYMENT BENEFITS.  During the Employment
         Period, the Company shall (i) maintain in full force and effect at the
         Company's expense and the Executive shall be entitled, pursuant to the
         terms thereof and subject to qualifying therefor, to full
         participation in, all of the employee benefit plans and arrangements
         maintained by the Company on the Effective Date for its executive
         officers (including without limitation each profit sharing/savings
         plan, pension and retirement plan and arrangement, if any, stock
         option plan, life insurance and health and accident plan and
         arrangement, medical insurance plan, disability plan, and vacation
         plan), and, (ii) in the event the Company shall adopt any additional
         employee benefit plans during the Employment Period, the Executive
         shall be entitled to full participation in each such adopted plan upon
         satisfaction of the eligibility requirements thereof.  The Company
         shall not make any changes in such plans or arrangements during the
         Employment Period that would adversely affect the Executive's rights
         or benefits accrued thereunder at the time of such change; provided,
         however, the Board may, from time to time, terminate any employee
         benefit plan then offered or maintained by the Company.  The Executive
         shall be entitled to participate in or receive benefits under any
         employee benefit plans or arrangements made available by the Company
         in the future to its executive and key management employees, subject
         to and on a basis consistent with the terms, conditions and overall
         administration of such plans and arrangements.  To the extent not
         provided for by any employee benefit plan maintained or adopted
         pursuant to this subsection (e) of this Section 1.7, the Company
         shall, at its expense, provide the Executive with an annual complete
         physical examination conducted by a physician of the Executive's
         choice, the results of which shall be kept confidential between the
         Executive and such physician.  Nothing paid to the Executive under any
         plan or arrangement presently in effect or made available in the
         future shall be deemed to be in lieu of the Annual Base Salary or
         Annual Bonus Compensation payable to the Executive pursuant to
         subsections (a) and (c) of Section 1.6 hereof.  Notwithstanding any
         provision of this Agreement to the contrary, any payments or benefits
         payable to the Executive hereunder in respect of any fiscal year of
         the Company during which the Executive is employed by the Company for
         less than the entire fiscal year shall, unless otherwise provided in
         the applicable plan or arrangement, be prorated in accordance with the
         number of days in such fiscal year during which the Executive is so
         employed.

                 (f)      REIMBURSEMENT OF EMPLOYEE EXPENSES.  The Executive is
         authorized to incur ordinary, necessary and reasonable expenses in
         connection with the performance of the Executive's duties and
         responsibilities under this Agreement and for the promotion of the
         business and activities of the Company during the Employment Period,
         including, without limitation, expenses for necessary travel and
         entertainment and other items of expenses required in the normal and
         routine course of the Executive's employment hereunder.  The Company
         shall reimburse the Executive from time to time for all such business
         expenses incurred pursuant to and in conformity with the provisions of
         this Section and the policies and practices of the Company then in
         effect relative to the reimbursement of business expenses, provided
         that the Executive submits to the Company:

                          (1)     An account book or similar written record in
                 which the Executive recorded at or near the time each
                 expenditure was made:  (i) the amount of the expenditures;
                 (ii) the time, place and designation of the type of
                 entertainment and travel or other expenses, or the date and
                 description of the gift (gifts made to one individual are not
                 to exceed a total of Twenty-Five and No/100 Dollars [$25.00]
                 in any fiscal year); (iii) the business reason





EXECUTIVE EMPLOYMENT AGREEMENT - Page 5
<PAGE>   7
                 for the expenditure and the nature of the business benefit
                 derived or expected to be derived as the result of the
                 expenditure; and (iv) the names, occupations, addresses and
                 other information concerning each person who was entertained
                 or given a gift sufficient to establish the business
                 relationship to the Company; and

                          (2)     Documentary evidence (such as supporting
                 receipts or paid bills) which state sufficient information to
                 establish the amount, date, place and essential character of
                 the expenditure, for each expenditure (i) of Twenty-Five and
                 No/100 Dollars ($25.00) or more (except for transportation
                 charges if not readily available) and (ii) for lodging or
                 traveling away from home.

         1.8     TERMINATION.

                 (a)      ABSENCE OF A BREACH OF AGREEMENT.  This Agreement and
         the Executive's employment hereunder may be terminated without any
         breach of this Agreement at any time during the term hereof only by
         reason of and in accordance with the following provisions:

                          (1)     DEATH.  If the Executive dies during the term
                 of this Agreement and while in the employ of the Company, the
                 Executive's employment hereunder shall automatically terminate
                 as of the date of the Executive's death, and the Company shall
                 have no further liability hereunder to the Executive or the
                 Executive's estate, except to the extent set forth in Section
                 1.9(a) hereof.

                          (2)     DISABILITY.  If, during the term of this
                 Agreement, the Executive shall be prevented from performing
                 the Executive's duties hereunder by reason of becoming totally
                 and permanently disabled as hereinafter defined, then the
                 Company may terminate the Executive's employment hereunder
                 upon written Notice of Termination (effective as of the Date
                 of Termination specified in Section 1.8[d] hereof) to the
                 Executive without any further liability hereunder to the
                 Executive, except as set forth in Section 1.9(b) hereof.  For
                 purposes of this Agreement, the Executive shall be deemed to
                 have become totally and permanently disabled when (i) the
                 Executive receives "total disability benefits" under either
                 (a) Social Security, or (b) the Company's long-term disability
                 plan, if any (whether funded with insurance paid for by either
                 the Company or the Executive or self-funded by the Company),
                 (ii) the Board, upon the written report of a qualified
                 physician (after a complete physical examination of the
                 Executive) selected by the Board or the Company's insurers and
                 acceptable to the Executive or the Executive's authorized
                 legal representative (which agreement as to acceptability will
                 not be unreasonably withheld), shall have determined that the
                 Executive has become physically and/or mentally incapable of
                 performing the Executive's duties under this Agreement on a
                 permanent basis even after reasonable accommodations (within
                 the meaning of the Americans With Disabilities Act) have been
                 attempted by the Company for the benefit of the Executive to
                 enable the Executive to perform his duties hereunder, or (iii)
                 the Executive is unable, due to injury, illness or other
                 incapacity (physical or mental), to perform the essential
                 functions, duties and responsibilities of the positions
                 contemplated herein on a full-time basis for the entire time
                 of a continuous period of one hundred eighty (180) consecutive
                 calendar days after





EXECUTIVE EMPLOYMENT AGREEMENT - Page 6
<PAGE>   8
                 its commencement or for an aggregate period of two hundred
                 forty (240) calendar days out of a continuous period of three
                 hundred sixty-five (365) calendar days even after reasonable
                 accommodations (within the meaning of the Americans With
                 Disabilities Act) have been attempted by the Company for the
                 benefit of the Executive to enable the Executive to perform
                 his duties hereunder.

                          (3)     TERMINATION BY THE COMPANY.

                                  (A)      FOR CAUSE.  During the Employment
                          Period, the Company may discharge the Executive for
                          cause and terminate the Executive's employment
                          hereunder upon written Notice of Termination
                          (effective as of the Date of Termination specified in
                          Section 1.8[d] hereof) to the Executive without any
                          further liability hereunder to the Executive or the
                          Executive's estate, except to the extent set forth in
                          Sections 1.9(c) hereof.  Such notice of discharge
                          shall describe with reasonable specificity the cause
                          or causes for the termination of the Executive's
                          employment, as well as the effective Date of
                          Termination of employment.  For purposes of this
                          Agreement, a discharge for "Cause" shall mean
                          termination of the Executive's employment upon
                          written Notice of Termination to the Executive,
                          limited, however, to one or more of the following
                          reasons:

                                        (i)     the Executive shall have been
                                  convicted by a court of competent
                                  jurisdiction of or admitted to an act of
                                  fraud, theft or embezzlement against the
                                  Company; or

                                        (ii)    the Executive shall have
                                  otherwise been convicted by a court of
                                  competent jurisdiction of a felony; or

                                        (iii)   the willful and unauthorized
                                  disclosure by the Executive of Trade Secrets
                                  (as defined in Section 1.11[b] hereof) of the
                                  Company as determined by the affirmative vote
                                  of at least a majority of the Board; or

                                        (iv)    the willful and continued
                                  failure by the Executive to substantially
                                  perform his obligations under this Agreement
                                  (other than any such failure resulting from
                                  the Executive's incapacity due to physical or
                                  mental illness) which is not remedied within
                                  thirty (30) days after a Notice of
                                  Termination (as defined in Section 1.8[c]
                                  hereof) is delivered to the Executive that
                                  specifically identifies, as required below,
                                  the facts and circumstances leading the
                                  Company to believe that the Executive has
                                  willfully and continuously failed to
                                  substantially perform his obligations under
                                  and in violation of this Agreement.  For
                                  purposes of this subsection, no act, or
                                  failure to act, on the Executive's part shall
                                  be considered "willful" unless done, or
                                  omitted to be done, by him in bad faith and
                                  without reasonable belief that his action or
                                  omission was in the best interests of the
                                  Company.  Notwithstanding the foregoing, the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 7
<PAGE>   9
                                  Executive shall not be deemed to have been
                                  terminated for Cause without (1) reasonable
                                  notice to the Executive setting forth the
                                  reasons, facts and circumstances for the
                                  Company's intention to terminate for Cause,
                                  (2) an opportunity for the Executive,
                                  together with his counsel, to be heard before
                                  the Board, and (3) delivery to the Executive
                                  of a Notice of Termination pursuant to
                                  Section 1.8(c) hereof, from the Board or its
                                  authorized delegate finding that in the
                                  Board's good faith determination the
                                  Executive was guilty of the conduct set forth
                                  above, and specifying the particulars thereof
                                  in detail.

                                  (B)      WITHOUT CAUSE.  In the event the
                          Executive's employment hereunder is terminated by the
                          Company pursuant to the provisions of Section
                          1.8(a)(3)(A) hereof for Cause as determined by the
                          Board and it is subsequently determined by a court of
                          competent jurisdiction that the Company did not have
                          proper Cause to discharge the Executive, then and in
                          such event, notwithstanding any other provision
                          herein to the contrary, the Executive's employment
                          hereunder shall be deemed to have been terminated by
                          the Company in breach of this Agreement without
                          Cause, but with notice pursuant to the provisions of
                          Section 1.8(b) hereof as of the date the Executive's
                          employment was previously terminated by the Company
                          purportedly for Cause, and the Company shall have no
                          liability to the Executive or the Executive's estate
                          other than as set forth in Section 1.9(f)(2) hereof.

                          (4)     TERMINATION BY THE EXECUTIVE.

                                  (A)      REASONS FOR TERMINATION.  The
                          Executive may terminate his employment hereunder (i)
                          for "Good Reason" (as hereinafter defined) at any
                          time upon sixty (60) days written Notice of
                          Termination to the Company, in which event the
                          Company shall have no further liability hereunder to
                          the Executive, except to the extent set forth in
                          Section 1.9(d) hereof, or (ii) voluntarily, at the
                          Executive's option, at any time upon sixty (60) days
                          written Notice of Termination to the Company, in
                          which event the Company shall have no further
                          liability hereunder to the Executive, except to the
                          extent set forth in Section 1.9(e) hereof.

                                  (B)      GOOD REASON.  For purposes of this
                          Agreement, the term "Good Reason" shall mean, without
                          the Executive's express written consent, the
                          occurrence of any of the following circumstances
                          (each of which occurrences shall constitute a
                          "Change"):

                                        (i)     the relocation of the Company's
                                  principal executive offices to a location
                                  more than thirty (30) miles from Santa Clara,
                                  California, or the Company's requiring the
                                  Executive to be based anywhere other than the
                                  location described in Section 1.5 hereof,
                                  except for travel reasonably required of the
                                  Executive in the performance of the
                                  Executive's duties on





EXECUTIVE EMPLOYMENT AGREEMENT - Page 8
<PAGE>   10
                                  behalf of the Company to an extent
                                  substantially consistent with the Executive's
                                  business travel obligations as of the
                                  Effective Date hereof;

                                        (ii)    the failure of the Company to
                                  obtain an agreement, satisfactory to the
                                  Executive, from any and all successors to
                                  assume and agree to perform this Agreement,
                                  as contemplated in Section 2.4 hereof;

                                        (iii)   any purported termination by
                                  the Company of the Executive's employment
                                  otherwise than as expressly permitted by this
                                  Agreement, including, but not limited to, any
                                  purported termination which is not effected
                                  pursuant to a Notice of Termination
                                  satisfying the requirements of subsections
                                  (c) and (d) of this Section 1.8 hereof (and,
                                  if applicable, the requirements of Section
                                  1.8[a][3] hereof);

                                        (iv)    any failure by the Company to
                                  comply with any material provision of this
                                  Agreement that has not been cured within ten
                                  (10) business days after written notice of
                                  such noncompliance has been delivered by the
                                  Executive to the Company; or

                                        (v)     the occurrence of a "Change of
                                  Control" of the Company, as defined below, if
                                  the Executive terminates this Agreement
                                  within one (1) year after such Change of
                                  Control.

                                  The Executive's continued employment shall
                          not constitute consent to, or a waiver of rights with
                          respect to, any circumstance constituting Good Reason
                          hereunder.  For purposes of this Section
                          1.8(a)(4)(B), any good faith determination of "Good
                          Reason" made by the Executive shall constitute and
                          create a reasonable presumption of Good Reason,
                          subject to rebuttal by the Company.

                                  (C)      CHANGE OF CONTROL.  For the purposes
                          of this Agreement, a "Change of Control" of the
                          Company shall mean:

                                        (i)     the transfer, through one
                                  transaction or a series of related
                                  transactions, either directly or indirectly,
                                  or through one or more intermediaries, of
                                  beneficial ownership (within the meaning of
                                  Rule 13d-3 promulgated under the Securities
                                  Exchange Act of 1934) of 20% or more of
                                  either the then outstanding shares of common
                                  stock or the combined voting power of the
                                  Company's then outstanding voting securities
                                  entitled to vote generally in the election of
                                  directors, or the last of any series of
                                  transfers that results in the transfer of
                                  beneficial ownership (within the meaning of
                                  Rule 13d-3 promulgated under the Securities
                                  Exchange Act of 1934) of 20% or more of
                                  either the then outstanding shares of common
                                  stock or the combined voting power of the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 9
<PAGE>   11
                                  Company's then outstanding voting securities
                                  entitled to vote generally in the election of
                                  directors; or

                                        (ii)    approval by the shareholders of
                                  the Company entitled to vote thereon of a
                                  merger or consolidation, the result of which
                                  is that persons who were the shareholders of
                                  the Company immediately prior to such merger
                                  or consolidation do not, immediately
                                  thereafter, own or otherwise beneficially
                                  hold more than 40% of the combined voting
                                  power of the surviving or consolidated
                                  company's then outstanding voting securities
                                  entitled to vote generally in the election of
                                  directors, or a liquidation or dissolution of
                                  the Company or the sale of all or
                                  substantially all of the assets of the
                                  Company; or

                                        (iii)   the transfer, through one
                                  transaction or a series of related
                                  transactions, either directly or indirectly,
                                  or through one or more intermediaries, of
                                  more than 50% of the assets of the Company,
                                  or the last of any series of transfers that
                                  results in the transfer of more than 50% of
                                  the assets of the Company.  For purposes of
                                  this Section 1.8(a)(4), the determination of
                                  what constitutes more than 50% of the assets
                                  of the Company shall be determined based on
                                  the most recent audited consolidated
                                  financial statements of the Company as
                                  certified by its independent accountants; or

                                        (iv)    During any fiscal year of the
                                  Company, individuals who at the beginning of
                                  such year constitute the Board of the Company
                                  and any new director or directors whose
                                  election to the Board was approved by a vote
                                  of a majority of the directors then still in
                                  office who either were directors at the
                                  beginning of such year or whose election or
                                  nomination for election was previously so
                                  approved, cease for any reason to constitute
                                  a majority of the Board.

                 (b)      TERMINATION BY THE COMPANY WITH NOTICE.
         Notwithstanding any provision in this Agreement to the contrary, the
         Company may terminate the Executive's employment hereunder for a
         reason other than as set forth in Subparagraphs (a)(1), (a)(2), or
         (a)(3) of this Section 1.8 upon written Notice of Termination
         (effective as of the Date of Termination specified in Section 1.8[d]
         hereof) to the Executive without any further liability hereunder to
         the Executive, except to the extent set forth in Sections 1.9(f)(1)
         hereof.

                 (c)      NOTICE OF TERMINATION.  Any termination of the
         Executive's employment by the Company or by the Executive (other than
         termination pursuant to subsection [a][1] of this Section 1.8 hereof)
         shall be communicated by written Notice of Termination to the other
         party.  For purposes of this Agreement, a "Notice of Termination"
         shall mean a notice which (i) indicates the specific termination
         provision in this Agreement relied upon, (ii) sets forth in reasonable
         detail the facts and circumstances claimed to provide a basis for
         termination of the Executive's employment under the provision so
         indicated and (iii) if the Date of Termination (as defined in





EXECUTIVE EMPLOYMENT AGREEMENT - Page 10
<PAGE>   12
         Section 1.8[d] hereof) is other than the date of delivery of such
         notice, specifies the termination date (which date shall not be less
         than ten [10] days after the delivery of such notice).

                 (d)      DATE OF TERMINATION.  "Date of Termination" shall
         mean (i) if the Executive's employment is terminated by his death, the
         date of his death, (ii) if the Executive's employment is terminated
         pursuant to subsection (a)(2) of Section 1.8 hereof (relating to
         disability), thirty (30) days after Notice of Termination is delivered
         to the Executive (provided that the Executive shall not have returned
         to the performance of his duties on a full-time basis during such
         thirty [30] day period), (iii) if the Executive's employment is
         terminated pursuant to subsection (a)(3) of Section 1.8 hereof
         (relating to Cause), ten (10) days after Notice of Termination is
         delivered to the Executive, and (iv) if the Executive's employment is
         terminated for any other reason, the date specified in the Notice of
         Termination, subject to other applicable provisions of this Agreement.

         1.9     COMPENSATION UPON TERMINATION.

                 (a)      DEATH.  In the event the Executive's employment
         hereunder is terminated pursuant to the provisions of Section
         1.8(a)(1) hereof due to the death of the Executive, the Company shall
         have no further obligation to the Executive or the Executive's estate,
         except to pay to the Executive's spouse, or if the Executive leaves no
         spouse, to the estate of the Executive (i) any accrued, but unpaid,
         Annual Base Salary, any authorized but unreimbursed business expenses,
         and any vacation benefits which have accrued as of the date of death,
         but were then unpaid or unused, and (ii) any accrued, but unpaid,
         Annual Bonus Compensation to the date of death, but without
         accelerating the bonus payment date.  Any amount due the Executive
         under clause (i) of this Paragraph shall be paid in a lump-sum cash
         payment within thirty (30) days after the death of the Executive and
         any amount due the Executive under clause (ii) of this Paragraph shall
         be paid in accordance with the Bonus Resolution.

                 (b)      DISABILITY.  In the event the Executive's employment
         hereunder is terminated pursuant to the provisions of Section
         1.8(a)(2) hereof due to the Disability of the Executive, the Company
         shall be relieved of all of its obligations under this Agreement,
         except to pay the Executive (i) any accrued, but unpaid Annual Base
         Salary, any authorized but unreimbursed business expenses, and any
         vacation benefits which have accrued as of the effective Date of
         Termination of the Executive's employment hereunder due to Disability,
         but then remain unpaid, (ii) any accrued, but unpaid, Annual Bonus
         Compensation to the effective Date of Termination due to Disability,
         but without accelerating the bonus payment date, and (iii) an amount
         equal to one year's Annual Base Salary of the Executive in effect on
         the effective Date of Termination due to Disability, less any proceeds
         payable to the Executive under disability insurance, if any, for the
         twelve-month period immediately following the effective Date of
         Termination due to Disability.  The provisions of the preceding
         sentence shall not affect the Executive's rights to receive payments
         under the Company's disability insurance plan, if any.  Any amount due
         the Executive under clause (i) of this Paragraph shall be paid in a
         lump-sum cash payment within thirty (30) days after the effective Date
         of Termination of the Executive's employment hereunder, any amount due
         the Executive under clause (ii) of this Paragraph shall be paid in
         accordance with the Bonus Resolution, and any amount due the Executive
         under clause (iii) of this Paragraph shall be paid





EXECUTIVE EMPLOYMENT AGREEMENT - Page 11
<PAGE>   13
         in accordance with the Company's regular payroll periods during the
         twelve-month period immediately following the effective Date of
         Termination due to Disability of the Executive.

                 (c)      CAUSE.  In the event the Executive's employment
         hereunder is terminated by the Company for Cause pursuant to the
         provisions of Section 1.8(a)(3) hereof, the Company shall have no
         further obligation to the Executive under this Agreement, except to
         pay the Executive (i) any accrued, but unpaid, Annual Base Salary, any
         authorized but unreimbursed business expenses, and any vacation
         benefits which have accrued as of the effective Date of Termination of
         the Executive's employment hereunder, but were then unpaid or unused,
         and (ii) any accrued, but unpaid, Annual Bonus Compensation to the
         effective Date of Termination, but without accelerating the bonus
         payment date.  Any amount due the Executive under clause (i) of this
         Paragraph shall be paid in a lump-sum cash payment within thirty (30)
         days after the effective Date of Termination of the Executive's
         employment hereunder and any amount due the Executive under clause
         (ii) of this Paragraph shall be paid in accordance with the Bonus
         Resolution.

                 (d)      TERMINATION BY THE EXECUTIVE FOR GOOD REASON.  In the
         event this Agreement is terminated by the Executive pursuant to the
         provisions of Section 1.8(a)(4)(A)(i) hereof, the Executive shall be
         entitled to receive (i) any accrued, but unpaid, Annual Base Salary,
         any authorized but unreimbursed business expenses, and any vacation
         benefits which have accrued as of the effective Date of Termination of
         the Executive's employment hereunder, but were then unpaid or unused,
         (ii) any accrued, but unpaid, Annual Bonus Compensation to the
         effective Date of Termination, but without accelerating the bonus
         payment date, and (iii) an amount in cash equal to three (3) times the
         average aggregate annual compensation of the Executive as determined
         from the sum of the Executive's Annual Base Salary and Annual Bonus
         Compensation for the five (5) fiscal years of the Company ended
         immediately prior to the effective Date of Termination of the
         Executive's employment with the Company.  Any amount due the Executive
         under clause (i) of this Paragraph shall be paid in a lump-sum cash
         payment within thirty (30) days after the effective Date of
         Termination of the Executive's employment hereunder, any amount due
         the Executive under clause (ii) of this Paragraph shall be paid in
         accordance with the Bonus Resolution, and any amount due the Executive
         under clause (iii) of this Paragraph shall be paid in a lump-sum cash
         payment within thirty (30) days after the effective Date of
         Termination of the Executive's employment hereunder.

                 (e)      TERMINATION BY THE EXECUTIVE WITH NOTICE.  In the
         event the Executive's employment hereunder is voluntarily terminated
         by the Executive pursuant to the provisions of Section 1.8(a)(4)(A)
         hereof for other than Good Reason, the Executive shall be entitled to
         receive (i) any accrued, but unpaid, Annual Base Salary, any
         authorized but unreimbursed business expenses, and any vacation
         benefits which have accrued as of the effective Date of Termination of
         the Executive's employment hereunder, but were then unpaid or unused,
         and (ii) any accrued, but unpaid, Annual Bonus Compensation to the
         effective Date of Termination but without accelerating the bonus
         payment date.  Any amount due the Executive under clause (i) of this
         Paragraph shall be paid in a lump-sum cash payment within thirty (30)
         days after the effective Date of Termination of the Executive's
         employment hereunder, and any amount due the Executive under clause
         (ii) of this Paragraph shall be paid in accordance with the Bonus
         Resolution.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 12
<PAGE>   14
                 (f)      TERMINATION BY THE COMPANY WITH NOTICE.

                          (1)     PURSUANT TO SECTION 1.8(b).  In the event the
                 Executive's employment hereunder is terminated by the Company
                 pursuant to the provisions of Section 1.8(b) hereof, the
                 Executive shall be entitled to receive (i) any accrued, but
                 unpaid, Annual Base Salary, any authorized but unreimbursed
                 business expenses, and any vacation benefits which have
                 accrued as of the effective Date of Termination of the
                 Executive's employment hereunder, but were then unpaid or
                 unused, (ii) any accrued, but unpaid, Annual Bonus
                 Compensation to the effective Date of Termination, but without
                 accelerating the bonus payment date, and (iii) an amount in
                 cash equal to three (3) times the average aggregate annual
                 compensation of the Executive as determined from the sum of
                 the Executive's Annual Base Salary and Annual Bonus
                 Compensation for the five (5) fiscal years of the Company
                 ended immediately prior to the effective Date of Termination
                 of the Executive's employment with the Company.  Any amount
                 due the Executive under clause (i) of this Paragraph shall be
                 paid in a lump-sum cash payment within thirty (30) days after
                 the effective Date of Termination of the Executive's
                 employment hereunder, any amount due the Executive under
                 clause (ii) of this Paragraph shall be paid in accordance with
                 the Bonus Resolution, and any amount due the Executive under
                 clause (iii) of this Paragraph shall be paid in a lump-sum
                 cash payment within thirty (30) days after the effective Date
                 of Termination of the Executive's employment hereunder.

                          (2)     PURSUANT TO SECTION 1.8(A)(3)(B).  In the
                 event the Executive's employment is purportedly terminated by
                 the Company pursuant to the provisions of Section 1.8
                 (a)(3)(A) for Cause and it is subsequently determined by a
                 court of competent jurisdiction that the Company did not have
                 adequate Cause to discharge the Executive, the Executive shall
                 be entitled to receive (i) the amount of compensation set
                 forth in Section 1.9(f)(1) immediately above, less any amount
                 previously paid to the Executive pursuant to the provisions of
                 Section 1.9(c) hereof, and (ii) the amount of the reasonable
                 attorneys' fees, plus court costs incurred by the Executive in
                 contesting that the Executive was improperly discharged by the
                 Company for Cause.  Any amount due the Executive under clauses
                 (i) and (ii) of this Paragraph shall be paid in a lump-sum
                 cash payment within thirty (30) days after the rendition of a
                 final judgment (after all appeals have been exhausted)
                 determining that the Executive was not terminated for Cause or
                 the date of final compromise and settlement of such issue
                 between the parties, as applicable.

         1.10    CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.  Notwithstanding
any provision of this Agreement to the contrary, in the event it shall be
determined that any payment or distribution by the Company to or for the
benefit of the Executive, whether paid or payable or distributed or
distributable pursuant to the terms of this Agreement or otherwise (the
"Payments"), would be subject to the excise tax imposed by Section 4999 of the
Internal Revenue Code of 1986, as amended (the "Code"), or any interest or
penalties with respect to such excise tax (such excise tax and any such
interest and penalties being hereinafter collectively referred to as the
"Excise Tax"), then the Executive shall be entitled to receive an additional
payment (a "Gross-Up Payment") in an amount such that after payment by the
Executive of all taxes (including any interest or penalties imposed with
respect to such taxes), including any Excise Tax imposed upon the Gross-Up
Payment, the Executive shall retain an amount of the Gross-





EXECUTIVE EMPLOYMENT AGREEMENT - Page 13
<PAGE>   15
Up Payment free and clear of all claims, taxes and impositions equal to the
Excise Tax imposed upon the Payments.

         1.11    PROTECTIVE COVENANTS.  The Executive recognizes that the
Executive's employment by the Company exacts the highest standards of trust and
confidence because (i) the Executive has become fully familiar with and will
further enhance his knowledge of all aspects of the Company's business and that
of its subsidiaries during the Executive's Employment Period with the Company,
(ii) certain information of which the Executive has secured or will gain
knowledge during the Executive's Employment Period is proprietary and
confidential information which is of special and peculiar value to the Company
or its subsidiaries, and (iii) if any such proprietary and confidential
information were imparted or otherwise disclosed to or became known by any
person, including the Executive, engaging in a business in competition with
that of the Company or its subsidiaries, hardship, loss and irreparable injury
and damage could result to the Company or its subsidiaries, the measurement of
which would be difficult if not impossible to ascertain.  Therefore, the
Executive agrees that it is necessary for the Company to protect its business
and that of its subsidiaries from such potential damage, and the Executive
further agrees that the following covenants constitute a reasonable and
appropriate means, consistent with the best interests of both the Executive and
the Company, to protect the Company or its subsidiaries against such potential
damage and shall apply to and be binding upon the Executive as provided herein.

                 (a)      PROPRIETARY INFORMATION.  The Executive acknowledges
         that any and all inventions, improvements, discoveries, formulae,
         processes, products or designs developed by the Executive alone or in
         conjunction with others in connection with the Company's business
         during the term of the Executive's Employment Period with the Company
         ("Proprietary Information") shall be the sole and absolute property of
         the Company in perpetuity, that the Executive shall promptly disclose
         such Proprietary Information to the Company, and the Executive shall
         have no right, title or interest therein or to receive additional
         monies therefor, regardless of whether development occurred during
         normal employment hours or any other time during the term of the
         Executive's Employment Period with the Company.  The Executive shall
         assist the Company in obtaining patents on all such Proprietary
         Information deemed patentable by the Company and shall execute all
         documents necessary to obtain such patents and to vest the Company
         with full and complete title to the patents and to protect the patents
         against infringement by others.  For purposes of this Agreement, an
         invention or concept shall be deemed to have been made during the
         period of the Executive's Employment Period if, during such period,
         the invention or concept was conceived or first actually reduced to
         practice, and the Executive agrees that any patent application filed
         by the Executive within one (1) year after the termination of the
         Executive's employment with the Company shall be presumed to relate to
         an invention or concept made or discovered during the term of the
         Executive's Employment Period with the Company, unless the Executive
         can establish the contrary.

                 (b)      TRADE SECRETS.  The Executive further acknowledges
         that the Company or its subsidiaries has developed unique skills,
         concepts, sales presentations, marketing programs, marketing strategy,
         business practices, methods of operation, trademarks, licenses,
         technical information, Proprietary Information, computer software
         programs, tapes and discs concerning its operations, systems, customer
         lists, customer leads, documents identifying past, present and future
         customers, hiring and training methods, financial and other
         confidential and proprietary





EXECUTIVE EMPLOYMENT AGREEMENT - Page 14
<PAGE>   16
         information concerning its business operations and products ("Trade
         Secrets").  The Executive recognizes that the Executive's position
         with the Company is one of the highest trust and confidence by reason
         of the Executive's access to and contact with certain Trade Secrets of
         the Company and its subsidiaries.  The Executive agrees and covenants
         to use the Executive's best efforts and to exercise utmost diligence
         to protect and safeguard the Trade Secrets of the Company and its
         subsidiaries.  The Executive further agrees and covenants that, except
         as may be required by the Company in connection with this Agreement,
         or with the prior written consent of the Company, the Executive shall
         not, either during the term of this Agreement or thereafter, directly
         or indirectly, use for the Executive's own benefit or for the benefit
         of another, or disclose, disseminate, or distribute to another, any
         Trade Secret (whether or not acquired, learned, obtained, or developed
         by the Executive alone or in conjunction with others) of the Company
         or its subsidiaries or of others with whom the Company or its
         subsidiaries has a business relationship.  All memoranda, notes,
         records, drawings, documents, or other writings whatsoever made,
         compiled, acquired, or received by the Executive during the term of
         this Agreement, arising out of, in connection with, or related to any
         activity or business of the Company or its subsidiaries, including,
         but not limited to, the Company's customers, suppliers, or others with
         whom the Company has a business relationship, the Company's
         arrangements with such parties, and the Company's pricing and product
         policies and strategies, are, and shall continue to be, the sole and
         exclusive property of the Company, and shall, together with all copies
         thereof and all advertising literature, be returned and delivered to
         the Company by the Executive immediately, without demand, upon the
         termination of this Agreement, or at any time upon the Company's
         demand.

                 (c)      RESTRICTION ON SOLICITING CUSTOMERS OF THE COMPANY OR
         ITS SUBSIDIARIES.  The Executive covenants that for a period of two
         (2) years following the effective Date of Termination of this
         Agreement, the Executive will not, either directly or indirectly, (i)
         disclose or otherwise make known to any person or entity the names or
         addresses of any of the customers of the Company or its subsidiaries,
         (ii) call on, solicit, or entice away, or attempt to call on, solicit
         or entice away any of the customers of the Company or its subsidiaries
         with whom the Executive became acquainted during the Executive's
         Employment Period with the Company, either for himself or for any
         other person, firm, corporation or other business entity.

                 (d)      SURVIVAL OF COVENANTS.  Each covenant of the
         Executive set forth in this Section 1.11 shall survive the termination
         of this Agreement and shall be construed as an agreement independent
         of any other provision of this Agreement, and the existence of any
         claim or cause of action of the Executive against the Company whether
         predicated on this Agreement or otherwise shall not constitute a
         defense to the enforcement by the Company of such covenants.

                 (e)      REMEDIES.  In the event of breach or threatened
         breach by the Executive of any provision of this Section 1.11, the
         Company shall be entitled to equitable relief by temporary restraining
         order, temporary injunction, permanent injunction or otherwise, in
         addition to any other legal or equitable relief to which it may be
         entitled, including any and all monetary damages which the Company may
         incur as a result of such breach or violation or threatened breach or
         violation.  The Company may pursue any remedy available to it
         concurrently or consecutively in any order as to any breach or
         violation, or threatened breach or violation, and





EXECUTIVE EMPLOYMENT AGREEMENT - Page 15
<PAGE>   17
         the pursuit of one or more of such remedies at any time shall not be
         deemed an election of remedies or waiver of the right to pursue any
         other of such remedies as to such breach or violation, or threatened
         breach or violation, or as to any other breach or violation, or
         threatened breach or violation.

                 (f)      NO EFFECT ON NONCOMPETITION AGREEMENT.  The Executive
         acknowledges that on even date herewith the Executive entered into a
         Noncompetition Agreement with Vertex Communications Corporation, a
         Texas corporation ("Vertex") and the Company, which is a wholly-owned
         subsidiary of Vertex, arising from the merger of TIW (a corporation in
         which the Executive was a director, executive officer and a
         shareholder owning approximately twenty-one percent (21%) of the
         issued and outstanding capital stock thereof) with and into the
         Company whereby the Company as the surviving corporation in the merger
         acquired all of the assets and business of TIW.  The Executive
         acknowledges and agrees that the Noncompetition Agreement and this
         Agreement are independent agreements which are separately enforceable
         against the Executive in accordance with the respective terms thereof.

         The Executive hereby acknowledges that  the Executive's  agreement to
be bound by the protective covenants set forth in this Section 1.11 was a
material inducement for the Company entering into this Agreement and agreeing
to pay the Executive the compensation, benefits and other amounts set forth
herein.


                                       2

                               GENERAL PROVISIONS

         2.1     NOTICES.  All notices, requests, consents, demands and all
other communications required or otherwise provided for under this Agreement
shall be in writing and shall be deemed to have been duly issued when delivered
on the date personally delivered or on the date deposited in a receptacle
maintained by the United States Postal Service for such purpose, postage
prepaid, by certified mail, return receipt requested, addressed to the
respective parties as follows:

         If to the Executive:     Dr. Rein Luik
                                  c/o TIW Systems, Inc.
                                          2211 Lawson Lane 
                                          Santa Clara, California 95054 
                                          

         If to the Company:       TIW Systems, Inc.
                                          c/o Vertex Communications Corporation
                                          2600 North Longview Street            
                                          Kilgore, Texas 75662                  
                                          Attn:    Chairman of the Board        
                                                                                




EXECUTIVE EMPLOYMENT AGREEMENT - Page 16
<PAGE>   18
or to such other address as any party hereto may have furnished to the other in
writing in accordance herewith, except that notices of change of address shall
be effective only upon receipt by the addressee.

         2.2     SEVERABILITY.  If any provision contained in this Agreement is
determined to be void, illegal or unenforceable, in whole or in part, then the
other provisions contained herein shall remain in full force and effect as if
the provision which was determined to be void, illegal, or unenforceable had
not been contained herein.

         2.3     WAIVER, MODIFICATION AND INTEGRATION.  The waiver by any party
hereto of a breach of any provision of this Agreement shall not operate or be
construed as a waiver of any subsequent breach by any party.  This Agreement
contains the entire agreement of the parties concerning employment of the
Executive by the Company and supersedes all prior and contemporaneous
representations, understandings and agreements, either oral or in writing,
between the parties hereto with respect to the employment of the Executive by
the Company and the payment of any severance or similar payment by the Company
or TIW Systems, Inc., a California corporation ("TIW"), to the Executive upon
the termination of the Executive's employment, including, but not limited to,
any obligation of TIW or the Company to the Executive under the STEP Multiple
Employer Supplemental Benefit Plan ("TIW Supplemental Benefit Plan"), and all
such prior or contemporaneous representations, understandings and agreements,
both oral and written, are hereby terminated.  Notwithstanding the preceding,
the Executive shall be entitled to receive any benefit payable by a third party
to the Executive under the TIW Supplemental Benefit Plan, and the payment of
such benefit by a third party shall not affect the Company's obligations to the
Executive hereunder.  This Agreement may not be modified, altered or amended
except by written agreement of the parties hereto.

         2.4     SUCCESSORS; BINDING EFFECT.  This Agreement shall be binding
and effective upon the Company and its successors and permitted assigns, and
upon the Executive, the Executive's heirs, executors and legal representatives;
provided, however, that the Company shall not assign this Agreement without the
written consent of the Executive.  The Company shall require any and all
successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Executive, to
expressly assume and agree to perform this Agreement in the same manner and to
the same extent that the Company would be required to perform it if no such
succession had occurred.  Failure of the Company to obtain such agreement prior
to the effectiveness of any such succession shall constitute a breach of this
Agreement and shall entitle the Executive to terminate his employment for Good
Reason, as herein defined.  As used in this Agreement, "Company" shall mean the
Company as hereinbefore defined and any successor to its respective business
and/or assets as aforesaid which executes and delivers the agreement provided
for in this Section 2.4 or which otherwise becomes bound by all the terms and
provisions of this Agreement by operation of law.  This Agreement and all
rights of the Executive hereunder shall, inure to the benefit of and be
enforceable by the Executive's personal or legal representatives, executors,
administrators, successors, heirs, distributees, devisees and legatees.  If the
Executive should die while any amounts would still be payable to him hereunder
if he had continued to live, all such amounts, unless otherwise provided
herein, shall be paid in accordance with the terms of this Agreement.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 17
<PAGE>   19
         2.5     GOVERNING LAW.  The parties hereto agree that the laws of the
State of California shall govern the validity of this Agreement, the
construction of its terms, and the interpretation of the rights and duties of
the respective parties hereto.

         2.6     REPRESENTATION OF EXECUTIVE.  The Executive hereby represents
and warrants to the Company that the Executive has not previously assumed any
obligations inconsistent with those contained in this Agreement.  The Executive
further represents and warrants to the Company that the Executive has entered
into this Agreement pursuant to the Executive's own initiative and that the
Company did not induce the Executive to execute this Agreement in contravention
of any existing commitments.  The Executive acknowledges that the Company has
entered into this Agreement in reliance upon the foregoing representations of
the Executive.

         2.7     SURVIVAL.  The provisions of Section 1.9, 1.10 and 1.11 shall
survive the termination of this Agreement and the termination of the employment
relationship created hereunder to the extent necessary or reasonably
appropriate to effectuate the intents and purposes of the parties hereto as
expressed in such Sections.

         2.8     COUNTERPART EXECUTION.  This Agreement may be executed in one
or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute but one and the same document.


         IN WITNESS WHEREOF, the respective parties hereto have each executed
this Agreement as of the day and year first above written, effective as of the
Effective Date.
        
                                        TIW SYSTEMS, INC.                       
                                                                                
                                                                                
                                        By: /s/ J. Rex Vardeman                 
                                           -------------------------------------
                                           J. REX VARDEMAN, 
                                           Chairman of the Board  
                                                                                
ATTEST:



/s/ Joe A. Ylitalo                         
- -----------------------

Secretary                               EXECUTIVE:


                                        /s/ Rein Luik 
                                        ----------------------------------------
                                        REIN LUIK





EXECUTIVE EMPLOYMENT AGREEMENT - Page 18

<PAGE>   1
                                                                    EXHIBIT 99.2

================================================================================

                       VERTEX COMMUNICATIONS CORPORATION

                                  EXHIBIT 99.2
                                       TO
                          CURRENT REPORT ON FORM 8-K/A
         Date of Report (Date of Earliest Event Reported):  May 9, 1997

================================================================================
<PAGE>   2
                         EXECUTIVE EMPLOYMENT AGREEMENT


     This Executive Employment Agreement (the "Agreement") by and between TIW
SYSTEMS, INC., a Nevada corporation formerly known as Vertex Acquisition
Corporation and having its principal place of business in Santa Clara, Santa
Clara County, California (the "Company"), and LOUIS BECKER (the "Executive"), a
resident of Santa Clara, Santa Clara County, California, is made and entered
into in Santa Clara, California, effective as of the 11th day of June, 1997
(the "Effective Date").


                              W I T N E S S E T H:


     WHEREAS, on even date herewith TIW Systems, Inc., a California corporation
("TIW") merged with and into the Company with the Company being the surviving
corporation;

     WHEREAS, the Executive currently serves as the Executive Vice President of
TIW, and the Board of Directors of the Company (the "Board") recognizes that
the Executive's participation in the management of the Company is vital to the
continued growth and success of the Company; and

     WHEREAS, the Board desires to provide for the continued employment of the
Executive, subject to the terms and conditions herein provided; and

     WHEREAS, the Executive is willing to commit himself to continue to serve
the Company in the capacity hereinafter stated, subject to the terms and
conditions herein provided;

     NOW, THEREFORE, in consideration of the premises and the respective
covenants and agreements of the parties herein contained, and intending to be
legally bound hereby, the parties hereto hereby covenant and agree as follows:


                                       1

                              TERMS OF EMPLOYMENT

     1.1   EMPLOYMENT.  The Company hereby employs the Executive as the
Executive Vice President of the Company for and during the term hereof, or as
such other executive officer of the Company as the Board may designate from
time to time during the term hereof, subject to the discretion of the Board and
the terms and conditions hereof.  The Executive hereby accepts such employment
pursuant to the terms and conditions set forth in this Agreement.

     1.2   DUTIES OF EXECUTIVE.  The Executive shall serve and perform in the
capacity described in Section 1.1 hereof and shall have such duties,
responsibilities, and authorities as are designated for such office pursuant to
the Bylaws, as amended, of the Company, and as may be reasonably assigned to
the Executive from time to time by the Board; provided, however, the Executive
shall, during the term hereof, continuously have and retain such duties,
responsibilities, and authorities which are at least as significant in scope
and substance as the duties, responsibilities, and authorities required of the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 1

<PAGE>   3
Executive's office and position with the Company as of the Effective Date.
Subject to the discretion of the Board and subject to the direction of the
President and Chief Executive Officer of the Company, the Executive shall, and
shall have commensurate authority to, direct, manage, supervise and control the
business, affairs and property of the Company, including but not limited to:
managing and coordinating the business operations and activities of the Company
and its divisions and subsidiaries; promulgating, approving and implementing
operating plans and administrative policies and fostering economy throughout
the Company and its divisions and subsidiaries; approving the addition,
elimination and/or modification of management and non-management positions and
related personnel within the Company and its divisions and subsidiaries;
approving salary and wage structures; and performing any and all other duties
as the Executive shall deem necessary or appropriate for the efficient
management and operation of the Company's business.  The Executive shall report
and be responsible to the President and Chief Executive Officer of the Company.

     The Executive agrees to devote the Executive's full time, best efforts,
abilities, knowledge and experience to the faithful performance of the duties,
responsibilities, and authorities which may be reasonably assigned to the
Executive and which are consistent with the Executive's executive office
described under Section 1.1 of this Agreement.  Notwithstanding the preceding,
the Executive may, without being in violation of the Executive's obligations
hereunder, (i) serve on corporate, civic or charitable boards, or committees
which are not engaged in business in competition with the Company or any
subsidiary thereof, and (ii) invest the Executive's personal assets in such
form or manner as will not require any material services by the Executive in
the operation of the entities in which such investments are made, provided the
Executive shall use his best efforts to pursue such activities in such a manner
so that such activities shall not prevent the Executive from fulfilling his
obligations to the Company hereunder.

     1.3   TERM.  This Agreement shall become effective as of the Effective
Date and shall continue in force and effect for successive three-year periods
from each successive day thereafter, unless sooner terminated as provided in
Section 1.7 of this Agreement.  The term of this Agreement is sometimes
hereinafter referred to as the "Employment Period."

     1.4   PLACE OF PERFORMANCE.  In connection with the Executive's employment
by the Company during the Employment Period, the Executive shall be based and
the Executive's services shall be performed in Santa Clara, Santa Clara County,
California, at the location where the Executive was employed immediately
preceding the Effective Date hereof, or at any office or location not more than
thirty (30) miles from Santa Clara, California, except for reasonable travel
required in connection with the Company's business to an extent substantially
consistent with the Executive's business travel obligations to TIW as of the
Effective Date hereof.

     1.5   COMPENSATION.  The Company shall pay the Executive, as full
compensation for services rendered by the Executive under this Agreement, as
follows:

           (a)  ANNUAL BASE SALARY.  The Company shall pay the Executive an
     annual base salary (the "Annual Base Salary") of ONE HUNDRED SIXTY
     THOUSAND AND NO/100 DOLLARS ($160,000.00) per year, or such higher Annual
     Base Salary as may be determined from time to time during the term hereof
     in accordance with the provisions of subsection (b) of this Section 1.5 by
     the Compensation Committee of the Board or the Board, in its sole
     discretion, as applicable, prorated for any partial period of employment.
     Such Annual Base Salary shall be





EXECUTIVE EMPLOYMENT AGREEMENT - Page 2

<PAGE>   4
     subject to all appropriate federal and state withholding and payroll taxes
     and shall be paid by the Company to the Executive in equal bi-weekly
     installments in accordance with the regular payroll policies and practices
     of the Company or in such other periodic installments and on such days
     during the month as the Company and the Executive shall mutually
     determine.  The Company's compensation of the Executive by payments of the
     Annual Base Salary pursuant to this Section 1.5(a) shall not be deemed
     exclusive and shall not prevent the Executive from participating in any
     other compensation or benefit plan of the Company, nor shall such
     compensation in any way limit or reduce any other obligation of the
     Company hereunder; and, except to the extent specifically set forth
     herein, no other compensation, benefit or payment hereunder shall in any
     way limit or reduce the obligation of the Company to pay the Annual Base
     Salary to the Executive during the term of this Agreement.

           (b)  ADJUSTMENTS TO ANNUAL BASE SALARY.  The Annual Base Salary set
     forth in Section 1.5(a) of this Agreement shall be subject to adjustment
     annually, effective as of October 1 of each fiscal year of the Company
     during the term of this Agreement, beginning with the fiscal year
     commencing October 1, 1998, to reflect increases thereof, if any,
     authorized and approved by the Compensation Committee of the Board or the
     Board, as applicable.  For purposes of this Agreement, any reference to
     "Annual Base Salary" herein shall mean the Executive's Annual Base Salary,
     as adjusted, as applicable.

           (c)  ANNUAL BONUS COMPENSATION.  In addition to the Annual Base
     Salary set forth in Section 1.5(a) hereof and any other amounts of
     compensation payable to the Executive pursuant to any other provisions of
     this Agreement, the Company shall also pay the Executive discretionary
     annual bonus compensation ("Annual Bonus Compensation") in an amount, if
     any, determined by the Board and the Compensation Committee of the Board
     to be proper and appropriate for each fiscal year of the Company during
     the term of this Agreement.  Such Annual Bonus Compensation shall be based
     upon such factors as the Board or the Compensation Committee of the Board
     shall deem appropriate and consistent with factors applicable to other
     executive officers of the Company, including (i) the Executive's
     contributions to the success of the business operations and the
     consolidated net-after-tax profits of the Company, its divisions and its
     subsidiaries for each fiscal year of the Company during the term hereof,
     as determined in accordance with generally accepted accounting principles,
     (ii) the consolidated revenues of the Company, its divisions and its
     subsidiaries for each fiscal year of the Company, and (iii) the general
     overall economic performance of the Company, its divisions and its
     subsidiaries for each fiscal year of the Company.  Such Annual Bonus
     Compensation, if any, shall be paid by the Company to the Executive in the
     manner set forth in the resolution of the Board or the Compensation
     Committee of the Board, as applicable, authorizing and declaring the
     payment of such Annual Bonus Compensation to the Executive (the "Bonus
     Resolution").  Notwithstanding anything herein to the contrary, the
     Executive shall not be entitled to any Annual Bonus Compensation for any
     fiscal year of the Company or any part thereof during the term of this
     Agreement unless and until such Annual Bonus Compensation is determined
     and declared by the Board or the Compensation Committee of the Board, as
     applicable.

     1.6   EMPLOYMENT BENEFITS.  In addition to the Annual Base Salary and any
Annual Bonus Compensation payable to the Executive hereunder, the Executive
shall be entitled to the following benefits upon satisfaction by the Executive
of the eligibility requirements therefor, subject to the following limitations:





EXECUTIVE EMPLOYMENT AGREEMENT - Page 3

<PAGE>   5
           (a)  SICK LEAVE BENEFITS AND DISABILITY INSURANCE.  Unless this
     Agreement is terminated pursuant to the provisions of Section 1.7(a)(2)
     hereof, the Executive shall be paid sick leave benefits at the Executive's
     then prevailing Annual Base Salary rate during the Executive's absence due
     to illness or other temporary incapacity, reduced by the amount, if any,
     of worker's compensation, social security entitlement or disability
     benefits, if any, under the Company's group disability insurance plan, if
     any.

           (b)  HOSPITALIZATION, ACCIDENT, MAJOR MEDICAL AND DENTAL INSURANCE.
     During the Employment Period, the Company, at its own expense, shall
     provide the Executive (and all dependents of the Executive at the request
     and expense of the Executive) with group hospitalization, group accident,
     major medical, and disability insurance in amounts of coverage comparable
     to the coverage, if any, provided other executive officers of the Company.

           (c)  VACATIONS.  The Executive shall be entitled to a reasonable
     paid vacation of not less than twenty (20) business days each calendar
     year during the Employment Period, exclusive of holidays and weekends,
     which vacation shall be taken by the Executive in accordance with the
     business requirements of the Company at the time and its vacation plans,
     policies and practices as applied to executive officers of the Company
     then in effect relative to this subject. The Executive shall also be
     entitled to compensation in respect of earned or accrued but unused
     vacation time based on the Executive's Annual Base Salary applicable at
     the time and to all paid holidays granted by the Company to its executive
     officers.

           (d)  EMPLOYMENT FACILITIES.  During the Employment Period, the
     Company shall provide, at its expense, appropriate and adequate office
     space, furniture, communications, stenographic and word-processing
     equipment, supplies, personnel (including professional, clerical, support
     and other personnel) and such other facilities and services as shall be
     suitable to the Executive's position and adequate for the Executive's use
     in performing the Executive's duties and responsibilities under this
     Agreement.

           (e)  OTHER EMPLOYMENT BENEFITS.  During the Employment Period, the
     Company shall (i) maintain in full force and effect at the Company's
     expense and the Executive shall be entitled, pursuant to the terms thereof
     and subject to qualifying therefor, to full participation in, all of the
     employee benefit plans and arrangements maintained by the Company on the
     Effective Date for its executive officers (including without limitation
     each profit sharing/savings plan, pension and retirement plan and
     arrangement, if any, stock option plan, life insurance and health and
     accident plan and arrangement, medical insurance plan, disability plan,
     and vacation plan), and, (ii) in the event the Company shall adopt any
     additional employee benefit plans during the Employment Period, the
     Executive shall be entitled to full participation in each such adopted
     plan upon satisfaction of the eligibility requirements thereof.  The
     Company shall not make any changes in such plans or arrangements during
     the Employment Period that would adversely affect the Executive's rights
     or benefits accrued thereunder at the time of such change; provided,
     however, the Board may, from time to time, terminate any employee benefit
     plan then offered or maintained by the Company.  The Executive shall be
     entitled to participate in or receive benefits under any employee benefit
     plans or arrangements made available by the Company in the future to its
     executive and key management employees, subject to and on a basis
     consistent with the terms, conditions and overall administration of such
     plans and arrangements.  To the extent not provided for by any employee
     benefit plan maintained or adopted pursuant to this subsection (e)





EXECUTIVE EMPLOYMENT AGREEMENT - Page 4

<PAGE>   6
     of this Section 1.6, the Company shall, at its expense, provide the
     Executive with an annual complete physical examination conducted by a
     physician of the Executive's choice, the results of which shall be kept
     confidential between the Executive and such physician.  Nothing paid to
     the Executive under any plan or arrangement presently in effect or made
     available in the future shall be deemed to be in lieu of the Annual Base
     Salary or Annual Bonus Compensation payable to the Executive pursuant to
     subsections (a) and (c) of Section 1.5 hereof.  Notwithstanding any
     provision of this Agreement to the contrary, any payments or benefits
     payable to the Executive hereunder in respect of any fiscal year of the
     Company during which the Executive is employed by the Company for less
     than the entire fiscal year shall, unless otherwise provided in the
     applicable plan or arrangement, be prorated in accordance with the number
     of days in such fiscal year during which the Executive is so employed.

           (f)  REIMBURSEMENT OF EMPLOYEE EXPENSES.  The Executive is
     authorized to incur ordinary, necessary and reasonable expenses in
     connection with the performance of the Executive's duties and
     responsibilities under this Agreement and for the promotion of the
     business and activities of the Company during the Employment Period,
     including, without limitation, expenses for necessary travel and
     entertainment and other items of expenses required in the normal and
     routine course of the Executive's employment hereunder.  The Company shall
     reimburse the Executive from time to time for all such business expenses
     incurred pursuant to and in conformity with the provisions of this Section
     and the policies and practices of the Company then in effect relative to
     the reimbursement of business expenses, provided that the Executive
     submits to the Company:

                (1)    An account book or similar written record in which the
           Executive recorded at or near the time each expenditure was made:
           (i) the amount of the expenditures; (ii) the time, place and
           designation of the type of entertainment and travel or other
           expenses, or the date and description of the gift (gifts made to one
           individual are not to exceed a total of Twenty-Five and No/100
           Dollars [$25.00] in any fiscal year); (iii) the business reason for
           the expenditure and the nature of the business benefit derived or
           expected to be derived as the result of the expenditure; and (iv)
           the names, occupations, addresses and other information concerning
           each person who was entertained or given a gift sufficient to
           establish the business relationship to the Company; and

                (2)    Documentary evidence (such as supporting receipts or
           paid bills) which state sufficient information to establish the
           amount, date, place and essential character of the expenditure, for
           each expenditure (i) of Twenty-Five and No/100 Dollars ($25.00) or
           more (except for transportation charges if not readily available)
           and (ii) for lodging or traveling away from home.

     1.7   TERMINATION.

           (a)  ABSENCE OF A BREACH OF AGREEMENT.  This Agreement and the
     Executive's employment hereunder may be terminated without any breach of
     this Agreement at any time during the term hereof only by reason of and in
     accordance with the following provisions:

                (1)    DEATH.  If the Executive dies during the term of this
           Agreement and while in the employ of the Company, the Executive's
           employment hereunder shall automatically terminate as of the date of
           the Executive's death, and the Company shall have no further





EXECUTIVE EMPLOYMENT AGREEMENT - Page 5

<PAGE>   7
     liability hereunder to the Executive or the Executive's estate, except to
     the extent set forth in Section 1.8(a) hereof.

                (2)    DISABILITY.  If, during the term of this Agreement, the
           Executive shall be prevented from performing the Executive's duties
           hereunder by reason of becoming totally and permanently disabled as
           hereinafter defined, then the Company may terminate the Executive's
           employment hereunder upon written Notice of Termination (effective
           as of the Date of Termination specified in Section 1.7[d] hereof) to
           the Executive without any further liability hereunder to the
           Executive, except as set forth in Section 1.8(b) hereof.  For
           purposes of this Agreement, the Executive shall be deemed to have
           become totally and permanently disabled when (i) the Executive
           receives "total disability benefits" under either (a) Social
           Security, or (b) the Company's long-term disability plan, if any
           (whether funded with insurance paid for by either the Company or the
           Executive or self-funded by the Company), (ii) the Board, upon the
           written report of a qualified physician (after a complete physical
           examination of the Executive) selected by the Board or the Company's
           insurers and acceptable to the Executive or the Executive's
           authorized legal representative (which agreement as to acceptability
           will not be unreasonably withheld), shall have determined that the
           Executive has become physically and/or mentally incapable of
           performing the Executive's duties under this Agreement on a
           permanent basis even after reasonable accommodations (within the
           meaning of the Americans With Disabilities Act) have been attempted
           by the Company for the benefit of the Executive to enable the
           Executive to perform his duties hereunder, or (iii) the Executive is
           unable, due to injury, illness or other incapacity (physical or
           mental), to perform the essential functions, duties and
           responsibilities of the position contemplated herein on a full-time
           basis for the entire time of a continuous period of one hundred
           eighty (180) consecutive calendar days after its commencement or for
           an aggregate period of two hundred forty (240) calendar days out of
           a continuous period of three hundred sixty-five (365) calendar days
           even after reasonable accommodations (within the meaning of the
           Americans With Disabilities Act) have been attempted by the Company
           for the benefit of the Executive to enable the Executive to perform
           his duties hereunder.

                (3)    TERMINATION BY THE COMPANY.

                       (A) FOR CAUSE.  During the Employment Period, the
                Company may discharge the Executive for cause and terminate the
                Executive's employment hereunder upon written Notice of
                Termination (effective as of the Date of Termination specified
                in Section 1.7[d] hereof) to the Executive without any further
                liability hereunder to the Executive or the Executive's estate,
                except to the extent set forth in Sections 1.8(c) hereof.  Such
                notice of discharge shall describe with reasonable specificity
                the cause or causes for the termination of the Executive's
                employment, as well as the effective Date of Termination of
                employment.  For purposes of this Agreement, a discharge for
                "Cause" shall mean termination of the Executive's employment
                upon written Notice of Termination to the Executive, limited,
                however, to one or more of the following reasons:





EXECUTIVE EMPLOYMENT AGREEMENT - Page 6

<PAGE>   8
                       (i)   the Executive shall have been convicted by a court
                of competent jurisdiction of or admitted to an act of fraud,
                theft or embezzlement against the Company; or

                       (ii)  the Executive shall have otherwise been convicted
                by a court of competent jurisdiction of a felony; or

                       (iii) the willful and unauthorized disclosure by the
                Executive of Trade Secrets (as defined in Section 1.10[b]
                hereof) of the Company as determined by the affirmative vote of
                at least a majority of the Board; or

                       (iv)  the willful and continued failure by the Executive
                to substantially perform his obligations under this Agreement
                (other than any such failure resulting from the Executive's
                incapacity due to physical or mental illness) which is not
                remedied within thirty (30) days after a Notice of Termination
                (as defined in Section 1.7[c] hereof) is delivered to the
                Executive that specifically identifies, as required below, the
                facts and circumstances leading the Company to believe that the
                Executive has willfully and continuously failed to
                substantially perform his obligations under and in violation of
                this Agreement.  For purposes of this subsection, no act, or
                failure to act, on the Executive's part shall be considered
                "willful" unless done, or omitted to be done, by him in bad
                faith and without reasonable belief that his action or omission
                was in the best interests of the Company.  Notwithstanding the
                foregoing, the Executive shall not be deemed to have been
                terminated for Cause without (1) reasonable notice to the
                Executive setting forth the reasons, facts and circumstances
                for the Company's intention to terminate for Cause, (2) an
                opportunity for the Executive, together with his counsel, to be
                heard before the Board, and (3) delivery to the Executive of a
                Notice of Termination pursuant to Section 1.7(c) hereof, from
                the Board or its authorized delegate finding that in the
                Board's good faith determination the Executive was guilty of
                the conduct set forth above, and specifying the particulars
                thereof in detail.

                       (B) WITHOUT CAUSE.  In the event the Executive's
                employment hereunder is terminated by the Company pursuant to
                the provisions of Section 1.7(a)(3)(A) hereof for Cause as
                determined by the Board and it is subsequently determined by a
                court of competent jurisdiction that the Company did not have
                proper Cause to discharge the Executive, then and in such
                event, notwithstanding any other provision herein to the
                contrary, the Executive's employment hereunder shall be deemed
                to have been terminated by the Company in breach of this
                Agreement without Cause, but with notice pursuant to the
                provisions of Section 1.7(b) hereof as of the date the
                Executive's employment was previously terminated by the Company
                purportedly for Cause, and the Company shall have no liability
                to the Executive or the Executive's estate other than as set
                forth in Section 1.8(f)(2) hereof.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 7

<PAGE>   9
                (4)    TERMINATION BY THE EXECUTIVE.

                       (A) REASONS FOR TERMINATION.  The Executive may
                terminate his employment hereunder (i) for "Good Reason" (as
                hereinafter defined) at any time upon sixty (60) days written
                Notice of Termination to the Company, in which event the
                Company shall have no further liability hereunder to the
                Executive, except to the extent set forth in Section 1.8(d)
                hereof, or (ii) voluntarily, at the Executive's option, at any
                time upon sixty (60) days written Notice of Termination to the
                Company, in which event the Company shall have no further
                liability hereunder to the Executive, except to the extent set
                forth in Section 1.8(e) hereof.

                       (B) GOOD REASON.  For purposes of this Agreement, the
                term "Good Reason" shall mean, without the Executive's express
                written consent, the occurrence of any of the following
                circumstances (each of which occurrences shall constitute a
                "Change"):

                           (i)   the relocation of the Company's principal
                       executive offices to a location more than thirty (30)
                       miles from Santa Clara, California, or the Company's
                       requiring the Executive to be based anywhere other than
                       the location described in Section 1.4 hereof, except for
                       travel reasonably required of the Executive in the
                       performance of the Executive's duties on behalf of the
                       Company to an extent substantially consistent with the
                       Executive's business travel obligations as of the
                       Effective Date hereof;

                           (ii)  the failure of the Company to obtain an
                       agreement, satisfactory to the Executive, from any and
                       all successors to assume and agree to perform this
                       Agreement, as contemplated in Section 2.4 hereof;

                           (iii) any purported termination by the Company of
                       the Executive's employment otherwise than as expressly
                       permitted by this Agreement, including, but not limited
                       to, any purported termination which is not effected
                       pursuant to a Notice of Termination satisfying the
                       requirements of subsections (c) and (d) of this Section
                       1.7 hereof (and, if applicable, the requirements of
                       Section 1.7[a][3] hereof);

                           (iv)  any failure by the Company to comply with any
                       material provision of this Agreement that has not been
                       cured within ten (10) business days after written notice
                       of such noncompliance has been delivered by the
                       Executive to the Company; or

                           (v)   the occurrence of a "Change of Control" of the
                       Company, as defined below, if the Executive terminates
                       this Agreement within one (1) year after such Change of
                       Control.

                The Executive's continued employment shall not constitute
     consent to, or a waiver of rights with respect to, any circumstance
     constituting Good Reason





EXECUTIVE EMPLOYMENT AGREEMENT - Page 8

<PAGE>   10
     hereunder.  For purposes of this Section 1.7(a)(4)(B), any good faith
     determination of "Good Reason" made by the Executive shall constitute and
     create a reasonable presumption of Good Reason, subject to rebuttal by the
     Company.

                       (C) CHANGE OF CONTROL.  For the purposes of this
                Agreement, a "Change of Control" of the Company shall mean:

                           (i)   the transfer, through one transaction or a
                       series of related transactions, either directly or 
                       indirectly, or through one or more intermediaries, of
                       beneficial ownership (within the meaning of Rule 13d-3
                       promulgated under the Securities Exchange Act of 1934)
                       of 20% or more of either the then outstanding shares of
                       common stock or the combined voting power of the
                       Company's then outstanding voting securities entitled to
                       vote generally in the election of directors, or the last
                       of any series of transfers that results in the transfer
                       of beneficial ownership (within the meaning of Rule
                       13d-3 promulgated under the Securities Exchange Act of
                       1934) of 20% or more of either the then outstanding
                       shares of common stock or the combined voting power of
                       the Company's then outstanding voting securities
                       entitled to vote generally in the election of
                       directors; or

                           (ii)  approval by the shareholders of the Company
                       entitled to vote thereon of a merger or consolidation,
                       the result of which is that persons who were the
                       shareholders of the Company immediately prior to such
                       merger or consolidation do not, immediately thereafter,
                       own or otherwise beneficially hold more than 40% of the
                       combined voting power of the surviving or consolidated
                       company's then outstanding voting securities entitled to
                       vote generally in the election of directors, or a
                       liquidation or dissolution of the Company or the sale of
                       all or substantially all of the assets of the Company;
                       or

                           (iii) the transfer, through one transaction or a
                       series of related transactions, either directly or
                       indirectly, or through one or more intermediaries, of
                       more than 50% of the assets of the Company, or the last
                       of any series of transfers that results in the transfer
                       of more than 50% of the assets of the Company.  For
                       purposes of this Section 1.7(a)(4), the determination of
                       what constitutes more than 50% of the assets of the
                       Company shall be determined based on the most recent
                       audited consolidated financial statements of the Company
                       as certified by its independent accountants; or

                           (iv)  During any fiscal year of the Company,
                       individuals who at the beginning of such year constitute
                       the Board of the Company and any new director or
                       directors whose election to the Board was approved by a
                       vote of a majority of the directors then still in office
                       who either were directors at the beginning of such year
                       or whose election or nomination for





EXECUTIVE EMPLOYMENT AGREEMENT - Page 9

<PAGE>   11
                       election was previously so approved, cease for any
                       reason to constitute a majority of the Board.

           (b)  TERMINATION BY THE COMPANY WITH NOTICE.  Notwithstanding any
     provision in this Agreement to the contrary, the Company may terminate the
     Executive's employment hereunder for a reason other than as set forth in
     Subparagraphs (a)(1), (a)(2), or (a)(3) of this Section 1.7 upon written
     Notice of Termination (effective as of the Date of Termination specified
     in Section 1.7[d] hereof) to the Executive without any further liability
     hereunder to the Executive, except to the extent set forth in Sections
     1.8(f)(1) hereof.

           (c)  NOTICE OF TERMINATION.  Any termination of the Executive's
     employment by the Company or by the Executive (other than termination
     pursuant to subsection [a][1] of this Section 1.7 hereof) shall be
     communicated by written Notice of Termination to the other party.  For
     purposes of this Agreement, a "Notice of Termination" shall mean a notice
     which (i) indicates the specific termination provision in this Agreement
     relied upon, (ii) sets forth in reasonable detail the facts and
     circumstances claimed to provide a basis for termination of the
     Executive's employment under the provision so indicated and (iii) if the
     Date of Termination (as defined in Section 1.7[d] hereof) is other than
     the date of delivery of such notice, specifies the termination date (which
     date shall not be less than ten [10] days after the delivery of such
     notice).

           (d)  DATE OF TERMINATION.  "Date of Termination" shall mean (i) if
     the Executive's employment is terminated by his death, the date of his
     death, (ii) if the Executive's employment is terminated pursuant to
     subsection (a)(2) of Section 1.7 hereof (relating to disability), thirty
     (30) days after Notice of Termination is delivered to the Executive
     (provided that the Executive shall not have returned to the performance of
     his duties on a full-time basis during such thirty [30] day period), (iii)
     if the Executive's employment is terminated pursuant to subsection (a)(3)
     of Section 1.7 hereof (relating to Cause), ten (10) days after Notice of
     Termination is delivered to the Executive, and (iv) if the Executive's
     employment is terminated for any other reason, the date specified in the
     Notice of Termination, subject to other applicable provisions of this
     Agreement.

     1.8   COMPENSATION UPON TERMINATION.

           (a)  DEATH.  In the event the Executive's employment hereunder is
     terminated pursuant to the provisions of Section 1.7(a)(1) hereof due to
     the death of the Executive, the Company shall have no further obligation
     to the Executive or the Executive's estate, except to pay to the
     Executive's spouse, or if the Executive leaves no spouse, to the estate of
     the Executive (i) any accrued, but unpaid, Annual Base Salary, any
     authorized but unreimbursed business expenses, and any vacation benefits
     which have accrued as of the date of death, but were then unpaid or
     unused, and (ii) any accrued, but unpaid, Annual Bonus Compensation to the
     date of death, but without accelerating the bonus payment date.  Any
     amount due the Executive under clause (i) of this Paragraph shall be paid
     in a lump- sum cash payment within thirty (30) days after the death of the
     Executive and any amount due the Executive under clause (ii) of this
     Paragraph shall be paid in accordance with the Bonus Resolution.

           (b)  DISABILITY.  In the event the Executive's employment hereunder
     is terminated pursuant to the provisions of Section 1.7(a)(2) hereof due
     to the Disability of the Executive, the Company shall be relieved of all
     of its obligations under this Agreement, except to pay the Executive (i)





EXECUTIVE EMPLOYMENT AGREEMENT - Page 10

<PAGE>   12
     any accrued, but unpaid Annual Base Salary, any authorized but
     unreimbursed business expenses, and any vacation benefits which have
     accrued as of the effective Date of Termination of the Executive's
     employment hereunder due to Disability, but then remain unpaid, (ii) any
     accrued, but unpaid, Annual Bonus Compensation to the effective Date of
     Termination due to Disability, but without accelerating the bonus payment
     date, and (iii) an amount equal to one year's Annual Base Salary of the
     Executive in effect on the effective Date of Termination due to
     Disability, less any proceeds payable to the Executive under disability
     insurance, if any, for the twelve-month period immediately following the
     effective Date of Termination due to Disability.  The provisions of the
     preceding sentence shall not affect the Executive's rights to receive
     payments under the Company's disability insurance plan, if any.  Any
     amount due the Executive under clause (i) of this Paragraph shall be paid
     in a lump-sum cash payment within thirty (30) days after the effective
     Date of Termination of the Executive's employment hereunder, any amount
     due the Executive under clause (ii) of this Paragraph shall be paid in
     accordance with the Bonus Resolution, and any amount due the Executive
     under clause (iii) of this Paragraph shall be paid in accordance with the
     Company's regular payroll periods during the twelve-month period
     immediately following the effective Date of Termination due to Disability
     of the Executive.

           (c)  CAUSE.  In the event the Executive's employment hereunder is
     terminated by the Company for Cause pursuant to the provisions of Section
     1.7(a)(3) hereof, the Company shall have no further obligation to the
     Executive under this Agreement, except to pay the Executive (i) any
     accrued, but unpaid, Annual Base Salary, any authorized but unreimbursed
     business expenses, and any vacation benefits which have accrued as of the
     effective Date of Termination of the Executive's employment hereunder, but
     were then unpaid or unused, and (ii) any accrued, but unpaid, Annual Bonus
     Compensation to the effective Date of Termination, but without
     accelerating the bonus payment date.  Any amount due the Executive under
     clause (i) of this Paragraph shall be paid in a lump-sum cash payment
     within thirty (30) days after the effective Date of Termination of the
     Executive's employment hereunder and any amount due the Executive under
     clause (ii) of this Paragraph shall be paid in accordance with the Bonus
     Resolution.

           (d)  TERMINATION BY THE EXECUTIVE FOR GOOD REASON.  In the event
     this Agreement is terminated by the Executive pursuant to the provisions
     of Section 1.7(a)(4)(A)(i) hereof, the Executive shall be entitled to
     receive (i) any accrued, but unpaid, Annual Base Salary, any authorized
     but unreimbursed business expenses, and any vacation benefits which have
     accrued as of the effective Date of Termination of the Executive's
     employment hereunder, but were then unpaid or unused, (ii) any accrued,
     but unpaid, Annual Bonus Compensation to the effective Date of
     Termination, but without accelerating the bonus payment date, and (iii) an
     amount in cash equal to three (3) times the average aggregate annual
     compensation of the Executive as determined from the sum of the
     Executive's Annual Base Salary and Annual Bonus Compensation for the five
     (5) fiscal years of the Company ended immediately prior to the effective
     Date of Termination of the Executive's employment with the Company.  Any
     amount due the Executive under clause (i) of this Paragraph shall be paid
     in a lump-sum cash payment within thirty (30) days after the effective
     Date of Termination of the Executive's employment hereunder, any amount
     due the Executive under clause (ii) of this Paragraph shall be paid in
     accordance with the Bonus Resolution, and any amount due the Executive
     under clause (iii) of this Paragraph shall be paid in a lump-sum cash
     payment within thirty (30) days after the effective Date of Termination of
     the Executive's employment hereunder.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 11

<PAGE>   13
           (e)  TERMINATION BY THE EXECUTIVE WITH NOTICE.  In the event the
     Executive's employment hereunder is voluntarily terminated by the
     Executive pursuant to the provisions of Section 1.7(a)(4)(A) hereof for
     other than Good Reason, the Executive shall be entitled to receive (i) any
     accrued, but unpaid, Annual Base Salary, any authorized but unreimbursed
     business expenses, and any vacation benefits which have accrued as of the
     effective Date of Termination of the Executive's employment hereunder, but
     were then unpaid or unused, and (ii) any accrued, but unpaid, Annual Bonus
     Compensation to the effective Date of Termination but without accelerating
     the bonus payment date.  Any amount due the Executive under clause (i) of
     this Paragraph shall be paid in a lump-sum cash payment within thirty (30)
     days after the effective Date of Termination of the Executive's employment
     hereunder, and any amount due the Executive under clause (ii) of this
     Paragraph shall be paid in accordance with the Bonus Resolution.

           (f)  TERMINATION BY THE COMPANY WITH NOTICE.

                (1)    PURSUANT TO SECTION 1.7(B).  In the event the
           Executive's employment hereunder is terminated by the Company
           pursuant to the provisions of Section 1.7(b) hereof, the Executive
           shall be entitled to receive (i) any accrued, but unpaid, Annual
           Base Salary, any authorized but unreimbursed business expenses, and
           any vacation benefits which have accrued as of the effective Date of
           Termination of the Executive's employment hereunder, but were then
           unpaid or unused, (ii) any accrued, but unpaid, Annual Bonus
           Compensation to the effective Date of Termination, but without
           accelerating the bonus payment date, and (iii) an amount in cash
           equal to three (3) times the average aggregate annual compensation
           of the Executive as determined from the sum of the Executive's
           Annual Base Salary and Annual Bonus Compensation for the five (5)
           fiscal years of the Company ended immediately prior to the effective
           Date of Termination of the Executive's employment with the Company.
           Any amount due the Executive under clause (i) of this Paragraph
           shall be paid in a lump-sum cash payment within thirty (30) days
           after the effective Date of Termination of the Executive's
           employment hereunder, any amount due the Executive under clause (ii)
           of this Paragraph shall be paid in accordance with the Bonus
           Resolution, and any amount due the Executive under clause (iii) of
           this Paragraph shall be paid in a lump-sum cash payment within
           thirty (30) days after the effective Date of Termination of the
           Executive's employment hereunder.

                (2)    PURSUANT TO SECTION 1.7(A)(3)(B).  In the event the
           Executive's employment is purportedly terminated by the Company
           pursuant to the provisions of Section 1.7 (a)(3)(A) for Cause and it
           is subsequently determined by a court of competent jurisdiction that
           the Company did not have adequate Cause to discharge the Executive,
           the Executive shall be entitled to receive (i) the amount of
           compensation set forth in Section 1.8(f)(1) immediately above, less
           any amount previously paid to the Executive pursuant to the
           provisions of Section 1.8(c) hereof, and (ii) the amount of the
           reasonable attorneys' fees, plus court costs incurred by the
           Executive in contesting that the Executive was improperly discharged
           by the Company for Cause.  Any amount due the Executive under
           clauses (i) and (ii) of this Paragraph shall be paid in a lump-sum
           cash payment within thirty (30) days after the rendition of a final
           judgment (after all appeals have been exhausted) determining that
           the Executive was not terminated for Cause or the date of final
           compromise and settlement of such issue between the parties, as
           applicable.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 12

<PAGE>   14
     1.9   CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.  Notwithstanding any
provision of this Agreement to the contrary, in the event it shall be
determined that any payment or distribution by the Company to or for the
benefit of the Executive, whether paid or payable or distributed or
distributable pursuant to the terms of this Agreement or otherwise (the
"Payments"), would be subject to the excise tax imposed by Section 4999 of the
Internal Revenue Code of 1986, as amended (the "Code"), or any interest or
penalties with respect to such excise tax (such excise tax and any such
interest and penalties being hereinafter collectively referred to as the
"Excise Tax"), then the Executive shall be entitled to receive an additional
payment (a "Gross-Up Payment") in an amount such that after payment by the
Executive of all taxes (including any interest or penalties imposed with
respect to such taxes), including any Excise Tax imposed upon the Gross-Up
Payment, the Executive shall retain an amount of the Gross-Up Payment free and
clear of all claims, taxes and impositions equal to the Excise Tax imposed upon
the Payments.

     1.10  PROTECTIVE COVENANTS.  The Executive recognizes that the Executive's
employment by the Company exacts the highest standards of trust and confidence
because (i) the Executive has become fully familiar with and will further
enhance his knowledge of all aspects of the Company's business and that of its
subsidiaries during the Executive's Employment Period with the Company, (ii)
certain information of which the Executive has secured or will gain knowledge
during the Executive's Employment Period is proprietary and confidential
information which is of special and peculiar value to the Company or its
subsidiaries, and (iii) if any such proprietary and confidential information
were imparted or otherwise disclosed to or became known by any person,
including the Executive, engaging in a business in competition with that of the
Company or its subsidiaries, hardship, loss and irreparable injury and damage
could result to the Company or its subsidiaries, the measurement of which would
be difficult if not impossible to ascertain.  Therefore, the Executive agrees
that it is necessary for the Company to protect its business and that of its
subsidiaries from such potential damage, and the Executive further agrees that
the following covenants constitute a reasonable and appropriate means,
consistent with the best interests of both the Executive and the Company, to
protect the Company or its subsidiaries against such potential damage and shall
apply to and be binding upon the Executive as provided herein.

           (a)  PROPRIETARY INFORMATION.  The Executive acknowledges that any
     and all inventions, improvements, discoveries, formulae, processes,
     products or designs developed by the Executive alone or in conjunction
     with others in connection with the Company's business during the term of
     the Executive's Employment Period with the Company ("Proprietary
     Information") shall be the sole and absolute property of the Company in
     perpetuity, that the Executive shall promptly disclose such Proprietary
     Information to the Company, and the Executive shall have no right, title
     or interest therein or to receive additional monies therefor, regardless
     of whether development occurred during normal employment hours or any
     other time during the term of the Executive's Employment Period with the
     Company.  The Executive shall assist the Company in obtaining patents on
     all such Proprietary Information deemed patentable by the Company and
     shall execute all documents necessary to obtain such patents and to vest
     the Company with full and complete title to the patents and to protect the
     patents against infringement by others.  For purposes of this Agreement,
     an invention or concept shall be deemed to have been made during the
     period of the Executive's Employment Period if, during such period, the
     invention or concept was conceived or first actually reduced to practice,
     and the Executive agrees that any patent application filed by the
     Executive within one (1) year after the termination of the Executive's
     employment with the Company shall be presumed to relate to an invention or
     concept made or discovered during the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 13

<PAGE>   15
     term of the Executive's Employment Period with the Company, unless the
     Executive can establish the contrary.

           (b)  TRADE SECRETS.  The Executive further acknowledges that the
     Company or its subsidiaries has developed unique skills, concepts, sales
     presentations, marketing programs, marketing strategy, business practices,
     methods of operation, trademarks, licenses, technical information,
     Proprietary Information, computer software programs, tapes and discs
     concerning its operations, systems, customer lists, customer leads,
     documents identifying past, present and future customers, hiring and
     training methods, financial and other confidential and proprietary
     information concerning its business operations and products ("Trade
     Secrets").  The Executive recognizes that the Executive's position with
     the Company is one of the highest trust and confidence by reason of the
     Executive's access to and contact with certain Trade Secrets of the
     Company and its subsidiaries.  The Executive agrees and covenants to use
     the Executive's best efforts and to exercise utmost diligence to protect
     and safeguard the Trade Secrets of the Company and its subsidiaries.  The
     Executive further agrees and covenants that, except as may be required by
     the Company in connection with this Agreement, or with the prior written
     consent of the Company, the Executive shall not, either during the term of
     this Agreement or thereafter, directly or indirectly, use for the
     Executive's own benefit or for the benefit of another, or disclose,
     disseminate, or distribute to another, any Trade Secret (whether or not
     acquired, learned, obtained, or developed by the Executive alone or in
     conjunction with others) of the Company or its subsidiaries or of others
     with whom the Company or its subsidiaries has a business relationship.
     All memoranda, notes, records, drawings, documents, or other writings
     whatsoever made, compiled, acquired, or received by the Executive during
     the term of this Agreement, arising out of, in connection with, or related
     to any activity or business of the Company or its subsidiaries, including,
     but not limited to, the Company's customers, suppliers, or others with
     whom the Company has a business relationship, the Company's arrangements
     with such parties, and the Company's pricing and product policies and
     strategies, are, and shall continue to be, the sole and exclusive property
     of the Company, and shall, together with all copies thereof and all
     advertising literature, be returned and delivered to the Company by the
     Executive immediately, without demand, upon the termination of this
     Agreement, or at any time upon the Company's demand.

           (c)  RESTRICTION ON SOLICITING CUSTOMERS OF THE COMPANY OR ITS
     SUBSIDIARIES.  The Executive covenants that for a period of two (2) years
     following the effective Date of Termination of this Agreement, the
     Executive will not, either directly or indirectly, (i) disclose or
     otherwise make known to any person or entity the names or addresses of any
     of the customers of the Company or its subsidiaries, (ii) call on,
     solicit, or entice away, or attempt to call on, solicit or entice away any
     of the customers of the Company or its subsidiaries with whom the
     Executive became acquainted during the Executive's Employment Period with
     the Company, either for himself or for any other person, firm, corporation
     or other business entity.

           (d)  SURVIVAL OF COVENANTS.  Each covenant of the Executive set
     forth in this Section 1.10 shall survive the termination of this Agreement
     and shall be construed as an agreement independent of any other provision
     of this Agreement, and the existence of any claim or cause of action of
     the Executive against the Company whether predicated on this Agreement or
     otherwise shall not constitute a defense to the enforcement by the Company
     of such covenants.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 14

<PAGE>   16
           (e)  REMEDIES.  In the event of breach or threatened breach by the
     Executive of any provision of this Section 1.10, the Company shall be
     entitled to equitable relief by temporary restraining order, temporary
     injunction, permanent injunction or otherwise, in addition to any other
     legal or equitable relief to which it may be entitled, including any and
     all monetary damages which the Company may incur as a result of such
     breach or violation or threatened breach or violation.  The Company may
     pursue any remedy available to it concurrently or consecutively in any
     order as to any breach or violation, or threatened breach or violation,
     and the pursuit of one or more of such remedies at any time shall not be
     deemed an election of remedies or waiver of the right to pursue any other
     of such remedies as to such breach or violation, or threatened breach or
     violation, or as to any other breach or violation, or threatened breach or
     violation.

           (f)  NO EFFECT ON NONCOMPETITION AGREEMENT.  The Executive
     acknowledges that on even date herewith the Executive entered into a
     Noncompetition Agreement with Vertex Communications Corporation, a Texas
     corporation ("Vertex") and the Company, which is a wholly-owned subsidiary
     of Vertex, arising from the merger of TIW (a corporation in which the
     Executive was an executive officer and a shareholder owning approximately
     six percent (6%) of the issued and outstanding capital stock thereof) with
     and into the Company whereby the Company as the surviving corporation in
     the merger acquired all of the assets and business of TIW.  The Executive
     acknowledges and agrees that the Noncompetition Agreement and this
     Agreement are independent agreements which are separately enforceable
     against the Executive in accordance with the respective terms thereof.

     The Executive hereby acknowledges that  the Executive's  agreement to be
bound by the protective covenants set forth in this Section 1.10 was a material
inducement for the Company entering into this Agreement and agreeing to pay the
Executive the compensation, benefits and other amounts set forth herein.


                                       2

                               GENERAL PROVISIONS

     2.1   NOTICES.  All notices, requests, consents, demands and all other
communications required or otherwise provided for under this Agreement shall be
in writing and shall be deemed to have been duly issued when delivered on the
date personally delivered or on the date deposited in a receptacle maintained
by the United States Postal Service for such purpose, postage prepaid, by
certified mail, return receipt requested, addressed to the respective parties
as follows:

     If to the Executive:  Mr. Louis Becker
                           c/o TIW Systems, Inc.
                                2211 Lawson Lane
                                Santa Clara, California 95054





EXECUTIVE EMPLOYMENT AGREEMENT - Page 15

<PAGE>   17
     If to the Company:    TIW Systems, Inc.
                                   c/o Vertex Communications Corporation
                                   2600 North Longview Street
                                   Kilgore, Texas 75662
                                   Attn:Chairman of the Board


or to such other address as any party hereto may have furnished to the other in
writing in accordance herewith, except that notices of change of address shall
be effective only upon receipt by the addressee.

     2.2   SEVERABILITY.  If any provision contained in this Agreement is
determined to be void, illegal or unenforceable, in whole or in part, then the
other provisions contained herein shall remain in full force and effect as if
the provision which was determined to be void, illegal, or unenforceable had
not been contained herein.

     2.3   WAIVER, MODIFICATION AND INTEGRATION.  The waiver by any party
hereto of a breach of any provision of this Agreement shall not operate or be
construed as a waiver of any subsequent breach by any party.  This Agreement
contains the entire agreement of the parties concerning employment of the
Executive by the Company and supersedes all prior and contemporaneous
representations, understandings and agreements, either oral or in writing,
between the parties hereto with respect to the employment of the Executive by
the Company and the payment of any severance or similar payment by the Company
or TIW Systems, Inc., a California corporation ("TIW"), to the Executive upon
the termination of the Executive's employment, including, but not limited to,
any obligation of TIW or the Company to the Executive under the STEP Multiple
Employer Supplemental Benefit Plan ("TIW Supplemental Benefit Plan"), and all
such prior or contemporaneous representations, understandings and agreements,
both oral and written, are hereby terminated.  Notwithstanding the preceding,
the Executive shall be entitled to receive any benefit payable by a third party
to the Executive under the TIW Supplemental Benefit Plan, and the payment of
such benefit by a third party shall not affect the Company's obligations to the
Executive hereunder.  This Agreement may not be modified, altered or amended
except by written agreement of the parties hereto.

     2.4   SUCCESSORS; BINDING EFFECT.  This Agreement shall be binding and
effective upon the Company and its successors and permitted assigns, and upon
the Executive, the Executive's heirs, executors and legal representatives;
provided, however, that the Company shall not assign this Agreement without the
written consent of the Executive.  The Company shall require any and all
successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Executive, to
expressly assume and agree to perform this Agreement in the same manner and to
the same extent that the Company would be required to perform it if no such
succession had occurred.  Failure of the Company to obtain such agreement prior
to the effectiveness of any such succession shall constitute a breach of this
Agreement and shall entitle the Executive to terminate his employment for Good
Reason, as herein defined.  As used in this Agreement, "Company" shall mean the
Company as hereinbefore defined and any successor to its respective business
and/or assets as aforesaid which executes and delivers the agreement provided
for in this Section 2.4 or which otherwise becomes bound by all the terms and
provisions of this Agreement by operation of law.  This Agreement and all
rights of the Executive hereunder shall, inure to the benefit of and be
enforceable by the Executive's personal or legal representatives, executors,
administrators, successors, heirs, distributees, devisees and legatees.  If the





EXECUTIVE EMPLOYMENT AGREEMENT - Page 16

<PAGE>   18
Executive should die while any amounts would still be payable to him hereunder
if he had continued to live, all such amounts, unless otherwise provided
herein, shall be paid in accordance with the terms of this Agreement.

     2.5   GOVERNING LAW.  The parties hereto agree that the laws of the State
of California shall govern the validity of this Agreement, the construction of
its terms, and the interpretation of the rights and duties of the respective
parties hereto.

     2.6   REPRESENTATION OF EXECUTIVE.  The Executive hereby represents and
warrants to the Company that the Executive has not previously assumed any
obligations inconsistent with those contained in this Agreement.  The Executive
further represents and warrants to the Company that the Executive has entered
into this Agreement pursuant to the Executive's own initiative and that the
Company did not induce the Executive to execute this Agreement in contravention
of any existing commitments.  The Executive acknowledges that the Company has
entered into this Agreement in reliance upon the foregoing representations of
the Executive.

     2.7   SURVIVAL.  The provisions of Section 1.8, 1.9 and 1.10 shall survive
the termination of this Agreement and the termination of the employment
relationship created hereunder to the extent necessary or reasonably
appropriate to effectuate the intents and purposes of the parties hereto as
expressed in such Sections.

     2.8   COUNTERPART EXECUTION.  This Agreement may be executed in one or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute but one and the same document.





EXECUTIVE EMPLOYMENT AGREEMENT - Page 17

<PAGE>   19
     IN WITNESS WHEREOF, the respective parties hereto have each executed this
Agreement as of the day and year first above written, effective as of the
Effective Date.



                                        TIW SYSTEMS, INC.

                                        By:  /s/ J. Rex Vardeman 
                                           -------------------------------------
                                           J. REX VARDEMAN, 
                                           Chairman of the Board


ATTEST:


/s/ Joe A. Ylitalo         
- --------------------------------
Secretary                               EXECUTIVE:



                                        /s/ Louis E. Becker
                                        ----------------------------------------
                                        LOUIS BECKER



EXECUTIVE EMPLOYMENT AGREEMENT - Page 18

<PAGE>   1
                                                                    EXHIBIT 99.3





================================================================================


                       VERTEX COMMUNICATIONS CORPORATION

                                  EXHIBIT 99.3
                                       TO
                          CURRENT REPORT ON FORM 8-K/A
         Date of Report (Date of Earliest Event Reported):  May 9, 1997

================================================================================

<PAGE>   2
                            NONCOMPETITION AGREEMENT


         THIS NONCOMPETITION AGREEMENT (the "Agreement") is made and entered
into this 11th day of June, 1997, by and among REIN LUIK, an individual
resident of Santa Clara County, California ("Luik"), VERTEX COMMUNICATIONS
CORPORATION, a Texas corporation ("Vertex"), and VERTEX ACQUISITION
CORPORATION, a Nevada corporation ("VAC"), which is a wholly-owned subsidiary
of Vertex and which has its principal place of business in Santa Clara County,
California.


                              W I T N E S S E T H:


         WHEREAS, Luik (along with his wife) owns approximately twenty-one
percent (21%) of the issued and outstanding capital stock of TIW Systems, Inc.,
a California corporation ("TIW"), exclusive of any stock of TIW that Luik may
beneficially own as a participant in the TIW Systems Incorporated Employee
Stock Ownership Plan;

         WHEREAS, Luik is also a Director and an officer of TIW;

         WHEREAS, Vertex, VAC, TIW, Luik, Heldur Tonisson and the TIW Systems
Incorporated Employee Stock Ownership Trust have previously entered into that
certain Agreement and Plan of Reorganization dated May 9, 1997 (the
"Reorganization Agreement") under the terms of which VAC will acquire TIW
pursuant to a forward triangular merger whereby VAC will be the surviving
corporation (the "Merger") effective upon the date (the "Effective Date") which
is the later of the date of (i) the filing of Articles of Merger with, and
issuance of a Certificate of Merger by, the Secretary of State of Nevada, and
(ii) the filing of Articles of Merger with, and issuance of a Certificate of
Merger by, the Secretary of State of California.

         WHEREAS, as a result of the Merger the shareholders of TIW, including
Luik, will collectively receive an aggregate amount of $7,892,824.00 in cash
and an aggregate amount of 574,359 shares of Vertex common stock, $.10 par
value per share (collectively, the "Merger Consideration");

         WHEREAS, as a result of the Merger, all property, rights, privileges,
powers and franchises, and all and every other interest of TIW shall thereafter
be the property of VAC, including all assets of TIW used in operating TIW's
business as a manufacturer of earth station satellite communications antenna,
radio telescopes and associated components (the "Acquired Business");

         WHEREAS, in connection with the Reorganization Agreement and as a
material inducement to Vertex and VAC to enter into the Reorganization
Agreement and perform their respective obligations thereunder, including the
payment of the Merger Consideration to the shareholders of TIW, including Luik,
and in order to protect the assets and goodwill of TIW, Luik has agreed that
Luik will not enter into competition with Vertex or VAC relative to the
operation of the Acquired Business for a period of four (4) years from the
Effective Date, and the parties hereto desire to more specifically delineate
such agreement herein;





NONCOMPETITION AGREEMENT - Page 1

<PAGE>   3
         NOW, THEREFORE, for and in consideration of the premises, the parties
hereto hereby covenant and agree as follows:

                                   ARTICLE 1

                        Agreement Regarding Competition

         1.1     Agreement Not to Compete.  For and in consideration of Vertex
and VAC entering into the Reorganization Agreement and performing their
respective obligations thereunder, including the payment of the Merger
Consideration, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged by Luik, Luik covenants and agrees
that, except as hereinafter set forth, during the Term hereof, as defined in
Section 1.5 below, Luik will not, directly or indirectly, either as an employee
(other than on behalf of Vertex or VAC or an affiliate thereof), employer,
consultant, agent, principal, partner, shareholder (other than through
ownership of publicly traded capital stock of a corporation which represents
less than five percent (5%) of the outstanding capital stock of such
corporation) corporate officer, director or in any other individual or
representative capacity, engage or participate in any business located in the
United States of America that engages in the design, manufacture and
implementation of satellite communication equipment and facilities, radio
telescopes or associated components or that competes with the business of the
Acquired Business as conducted as of the date hereof.  Luik further agrees that
the existence of any cause of action against Vertex, VAC or the Acquired
Business shall not constitute a defense to the enforcement by Vertex or VAC of
this Agreement.

         1.2     Nonsolicitation of Customers.  During the Term hereof, Luik
shall not, either directly or indirectly, call on, solicit or take away or
attempt to call on, solicit or take away any of the customers or clients of VAC
or the Acquired Business as of the date hereof for the purpose of selling
products or services to such customers or clients which compete with the
products or services being sold or provided by VAC or the Acquired Business
either for himself or for any other person, firm, corporation or other entity.

         1.3     Nonsolicitation of Employees.  During the Term hereof, Luik
shall not, either directly or indirectly:

                 (a)      Solicit, entice, persuade or induce, directly or
         indirectly, any employee (or person who within the preceding ninety
         (90) days was an employee) of TIW or of Vertex or of VAC or their
         respective affiliates or any other person who is under contract with
         or rendering services to TIW or to Vertex or VAC or their respective
         affiliates, to terminate his or her employment by, or contractual
         relationship with, such person or to refrain from extending or
         renewing the same (upon the same or new terms) or to refrain from
         rendering services to or for such person or to become employed by or
         to enter into contractual relations with any persons other than such
         person or to enter into a relationship with a competitor of TIW,
         Vertex, VAC or their respective affiliates;

                 (b)      Approach any such employee or other person for any of
         the foregoing purposes, or

                 (c)      Authorize or approve or assist in the taking of any
         such actions by any person other than TIW, Vertex, VAC or their
         respective affiliates.





NONCOMPETITION AGREEMENT - Page 2

<PAGE>   4
         1.4     Restrictions on Certain Actions.  During the Term hereof, Luik
shall not, either directly or indirectly, make any statements, or take any
actions, that would disparage Vertex, VAC or the Acquired Business.

         1.5     Term.  The Term of this Agreement (the "Term") shall be a
period of forty-eight (48) months commencing on the Effective Date and ending
at midnight on the same date forty-eight (48) months after the Effective Date.


                                   ARTICLE 2

                                    Remedies

         2.1     Remedies.  In the event of the breach or threatened breach by
Luik of any provision of Sections 1.1, 1.2, 1.3 and/or 1.4 hereof, Vertex
and/or VAC, as applicable, shall be entitled to relief by temporary restraining
order, temporary injunction, or permanent injunction or otherwise, in addition
to any other legal and equitable relief to which it may be entitled, including
any and all monetary damages which Vertex or VAC or the Acquired Business may
incur as a result of said breach, violation or threatened breach or violation.
Vertex or VAC, as applicable, may pursue any remedy available to it
concurrently or consecutively in any order as to any breach, violation, or
threatened breach or violation, and the pursuit of one of such remedies at any
time will not be deemed an election of remedies or waiver of the right to
pursue any other of such remedies as to such breach, violation, or threatened
breach or violation, or as to any other breach, violation, or threatened breach
or violation.

         2.2     Attorney Fees.  The parties hereto agree that in the event
that Vertex and/or VAC finds it necessary to employ attorneys to enforce the
provisions of Sections 1.1, 1.2, 1.3 or 1.4 hereof through litigation, Vertex
and/or VAC, as applicable, shall be entitled to be reimbursed its reasonable
attorneys' fees and related court costs from Luik if Vertex and/or VAC is the
prevailing party in such litigation.


                                   ARTICLE 3

                               General Provisions

         3.1     Integration.  This Agreement contains the complete agreement
between the parties hereto with respect to the subject matter hereof,
supersedes any existing agreements between such parties with respect to the
subject matter hereof and cannot be changed or terminated except by written
instrument executed by each of the parties.

         3.2     Continuation Following Assignment.  Luik agrees that this
Agreement and the covenants contained herein shall continue to be binding and
controlling on Luik notwithstanding the assignment of all or any part of VAC's
rights to or interest in the Acquired Business by VAC.

         3.3     Counterparts.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which, taken
together, shall constitute one and the same instrument.





NONCOMPETITION AGREEMENT - Page 3

<PAGE>   5
         3.4     Severable Provisions.  The intent of each party hereto is that
the restrictions and limitations on Luik described herein shall apply and be
enforceable to the fullest extent allowed by law and shall under no
circumstances be terminated in full in the event that any portion of such
limitations or restrictions exceed applicable law. The illegality, invalidity
or unenforceability of any term or provision of this Agreement shall have no
effect on any other term or provision of this Agreement and the provision held
to be void, illegal or unenforceable shall be limited so that it shall remain
in effect to the extent permissible by law.  In the event any court of
competent jurisdiction determines that any part of the provisions hereof exceed
any applicable geographical, temporal or other legal or equitable limitations
or restrictions, then such court is hereby authorized and requested by the
parties to limit or reform the applicable limitations and restrictions to the
minimum extent necessary so that such limitations and restrictions set forth
herein are enforceable under applicable law.

         3.5     Choice of Law and Venue.  THIS AGREEMENT IS MADE AND ENTERED
INTO IN  KILGORE, GREGG COUNTY, TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS WITHOUT REGARD TO THE PRINCIPLES
OF CONFLICTS OF LAW THEREOF.  ANY LITIGATION, SPECIAL PROCEEDING OR OTHER
PROCEEDING AS BETWEEN THE PARTIES THAT MAY BE BROUGHT, OR ARISE OUT OF, IN
CONNECTION WITH OR BY REASON OF THIS AGREEMENT SHALL BE BROUGHT IN THE
APPLICABLE FEDERAL OR STATE COURT IN AND FOR GREGG COUNTY, TEXAS, WHICH COURTS
SHALL BE THE EXCLUSIVE COURTS OF JURISDICTION AND VENUE.


         IN WITNESS WHEREOF, each party hereto has caused this Agreement to be
executed and delivered by its duly authorized representative as of the day and
year first above written.

                                     LUIK:                                    
                                         
                                         
                                     /s/ Rein Luik 
                                     -------------------------------------------
                                     REIN LUIK, Individually    

                                     VERTEX: 
                                 


                                     VERTEX COMMUNICATIONS CORPORATION        
                                             
                                         
                                         
                                     By: /s/ J. Rex Vardeman 
                                        ----------------------------------------
                                        J. REX VARDEMAN, 
                                        President and Chief Executive Officer



                                     VERTEX ACQUISITION CORPORATION


                                     By: /s/ James D. Carter 
                                        ----------------------------------------
                                        JAMES D. CARTER, Vice President





NONCOMPETITION AGREEMENT - Page 4


<PAGE>   1
                                                                    EXHIBIT 99.4

================================================================================

                       VERTEX COMMUNICATIONS CORPORATION

                                  EXHIBIT 99.4
                                       TO
                          CURRENT REPORT ON FORM 8-K/A
         Date of Report (Date of Earliest Event Reported):  May 9, 1997
================================================================================



<PAGE>   2
                            NONCOMPETITION AGREEMENT


         THIS NONCOMPETITION AGREEMENT (the "Agreement") is made and entered
into this 11th day of June, 1997, by and among LOUIS BECKER, an individual
resident of Santa Clara County, California ("Becker"), VERTEX COMMUNICATIONS
CORPORATION, a Texas corporation ("Vertex"), and VERTEX ACQUISITION
CORPORATION, a Nevada corporation ("VAC"), which is a wholly-owned subsidiary
of Vertex and which has its principal place of business in Santa Clara County,
California.


                              W I T N E S S E T H:


         WHEREAS, Becker (along with his wife) owns approximately six percent
(6%) of the issued and outstanding capital stock of TIW Systems, Inc., a
California corporation ("TIW"), exclusive of any stock of TIW that Becker may
beneficially own as a participant in the TIW Systems Incorporated Employee
Stock Ownership Plan;

         WHEREAS, Becker is also an officer of TIW;

         WHEREAS, Vertex, VAC, TIW, Becker, Heldur Tonisson and the TIW Systems
Incorporated Employee Stock Ownership Trust have previously entered into that
certain Agreement and Plan of Reorganization dated May 9, 1997 (the
"Reorganization Agreement") under the terms of which VAC will acquire TIW
pursuant to a forward triangular merger whereby VAC will be the surviving
corporation (the "Merger") effective upon the date (the "Effective Date") which
is the later of the date of (i) the filing of Articles of Merger with, and
issuance of a Certificate of Merger by, the Secretary of State of Nevada, and
(ii) the filing of Articles of Merger with, and issuance of a Certificate of
Merger by, the Secretary of State of California.

         WHEREAS, as a result of the Merger the shareholders of TIW, including
Becker, will collectively receive an aggregate amount of $7,892,824.00 in cash
and an aggregate amount of 574,359 shares of Vertex common stock, $.10 par
value per share (collectively, the "Merger Consideration");

         WHEREAS, as a result of the Merger, all property, rights, privileges,
powers and franchises, and all and every other interest of TIW shall thereafter
be the property of VAC, including all assets of TIW used in operating TIW's
business as a manufacturer of earth station satellite communications antenna,
radio telescopes and associated components (the "Acquired Business");

         WHEREAS, in connection with the Reorganization Agreement and as a
material inducement to Vertex and VAC to enter into the Reorganization
Agreement and perform their respective obligations thereunder, including the
payment of the Merger Consideration to the shareholders of TIW, including
Becker, and in order to protect the assets and goodwill of TIW, Becker has
agreed that Becker will not enter into competition with Vertex or VAC relative
to the operation of the Acquired Business for a period of four (4) years from
the Effective Date, and the parties hereto desire to more specifically
delineate such agreement herein;





NONCOMPETITION AGREEMENT - Page 1

<PAGE>   3
         NOW, THEREFORE, for and in consideration of the premises, the parties
hereto hereby covenant and agree as follows:

                                   ARTICLE 1

                        Agreement Regarding Competition

         1.1     Agreement Not to Compete.  For and in consideration of Vertex
and VAC entering into the Reorganization Agreement and performing their
respective obligations thereunder, including the payment of the Merger
Consideration, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged by Becker, Becker covenants and
agrees that, except as hereinafter set forth, during the Term hereof, as
defined in Section 1.5 below, Becker will not, directly or indirectly, either
as an employee (other than on behalf of Vertex or VAC or an affiliate thereof),
employer, consultant, agent, principal, partner, shareholder (other than
through ownership of publicly traded capital stock of a corporation which
represents less than five percent (5%) of the outstanding capital stock of such
corporation) corporate officer, director or in any other individual or
representative capacity, engage or participate in any business located in the
United States of America that engages in the design, manufacture and
implementation of satellite communication equipment and facilities, radio
telescopes or associated components or that competes with the business of the
Acquired Business as conducted as of the date hereof.  Becker further agrees
that the existence of any cause of action against Vertex, VAC or the Acquired
Business shall not constitute a defense to the enforcement by Vertex or VAC of
this Agreement.

         1.2     Nonsolicitation of Customers.  During the Term hereof, Becker
shall not, either directly or indirectly, call on, solicit or take away or
attempt to call on, solicit or take away any of the customers or clients of VAC
or the Acquired Business as of the date hereof for the purpose of selling
products or services to such customers or clients which compete with the
products or services being sold or provided by VAC or the Acquired Business
either for himself or for any other person, firm, corporation or other entity.

         1.3     Nonsolicitation of Employees.  During the Term hereof, Becker
           shall not, either directly or indirectly:

                 (a)      Solicit, entice, persuade or induce, directly or
         indirectly, any employee (or person who within the preceding ninety
         (90) days was an employee) of TIW or of Vertex or of VAC or their
         respective affiliates or any other person who is under contract with
         or rendering services to TIW or to Vertex or VAC or their respective
         affiliates, to terminate his or her employment by, or contractual
         relationship with, such person or to refrain from extending or
         renewing the same (upon the same or new terms) or to refrain from
         rendering services to or for such person or to become employed by or
         to enter into contractual relations with any persons other than such
         person or to enter into a relationship with a competitor of TIW,
         Vertex, VAC or their respective affiliates;

                 (b)      Approach any such employee or other person for any of
         the foregoing purposes, or

                 (c)      Authorize or approve or assist in the taking of any
         such actions by any person other than TIW, Vertex, VAC or their
         respective affiliates.





NONCOMPETITION AGREEMENT - Page 2

<PAGE>   4
         1.4     Restrictions on Certain Actions.  During the Term hereof,
Becker shall not, either directly or indirectly, make any statements, or take
any actions, that would disparage Vertex, VAC or the Acquired Business.

         1.5     Term.  The Term of this Agreement (the "Term") shall be a
period of forty-eight (48) months commencing on the Effective Date and ending
at midnight on the same date forty-eight (48) months after the Effective Date.


                                   ARTICLE 2

                                    Remedies

         2.1     Remedies.  In the event of the breach or threatened breach by
Becker of any provision of Sections 1.1, 1.2, 1.3 and/or 1.4 hereof, Vertex
and/or VAC, as applicable, shall be entitled to relief by temporary restraining
order, temporary injunction, or permanent injunction or otherwise, in addition
to any other legal and equitable relief to which it may be entitled, including
any and all monetary damages which Vertex or VAC or the Acquired Business may
incur as a result of said breach, violation or threatened breach or violation.
Vertex or VAC, as applicable, may pursue any remedy available to it
concurrently or consecutively in any order as to any breach, violation, or
threatened breach or violation, and the pursuit of one of such remedies at any
time will not be deemed an election of remedies or waiver of the right to
pursue any other of such remedies as to such breach, violation, or threatened
breach or violation, or as to any other breach, violation, or threatened breach
or violation.

         2.2     Attorney Fees.  The parties hereto agree that in the event
that Vertex and/or VAC finds it necessary to employ attorneys to enforce the
provisions of Sections 1.1, 1.2, 1.3 or 1.4 hereof through litigation, Vertex
and/or VAC, as applicable, shall be entitled to be reimbursed its reasonable
attorneys' fees and related court costs from Becker if Vertex and/or VAC is the
prevailing party in such litigation.


                                   ARTICLE 3

                               General Provisions

         3.1     Integration.  This Agreement contains the complete agreement
between the parties hereto with respect to the subject matter hereof,
supersedes any existing agreements between such parties with respect to the
subject matter hereof and cannot be changed or terminated except by written
instrument executed by each of the parties.

         3.2     Continuation Following Assignment.  Becker agrees that this
Agreement and the covenants contained herein shall continue to be binding and
controlling on Becker notwithstanding the assignment of all or any part of
VAC's rights to or interest in the Acquired Business by VAC.

         3.3     Counterparts.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which, taken
together, shall constitute one and the same instrument.

         3.4     Severable Provisions.  The intent of each party hereto is that
the restrictions and limitations on Becker described herein shall apply and be
enforceable to the fullest extent allowed by law and shall





NONCOMPETITION AGREEMENT - Page 3

<PAGE>   5
under no circumstances be terminated in full in the event that any portion of
such limitations or restrictions exceed applicable law. The illegality,
invalidity or unenforceability of any term or provision of this Agreement shall
have no effect on any other term or provision of this Agreement and the
provision held to be void, illegal or unenforceable shall be limited so that it
shall remain in effect to the extent permissible by law.  In the event any
court of competent jurisdiction determines that any part of the provisions
hereof exceed any applicable geographical, temporal or other legal or equitable
limitations or restrictions, then such court is hereby authorized and requested
by the parties to limit or reform the applicable limitations and restrictions
to the minimum extent necessary so that such limitations and restrictions set
forth herein are enforceable under applicable law.

         3.5     Choice of Law and Venue.  THIS AGREEMENT IS MADE AND ENTERED
INTO IN KILGORE, GREGG COUNTY, TEXAS AND SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS WITHOUT REGARD TO THE PRINCIPLES
OF CONFLICTS OF LAW THEREOF.  ANY LITIGATION, SPECIAL PROCEEDING OR OTHER
PROCEEDING AS BETWEEN THE PARTIES THAT MAY BE BROUGHT, OR ARISE OUT OF, IN
CONNECTION WITH OR BY REASON OF THIS AGREEMENT SHALL BE BROUGHT IN THE
APPLICABLE FEDERAL OR STATE COURT IN AND FOR GREGG COUNTY, TEXAS WHICH COURTS
SHALL BE THE EXCLUSIVE COURTS OF JURISDICTION AND VENUE.


         IN WITNESS WHEREOF, each party hereto has caused this Agreement to be
executed and delivered by its duly authorized representative as of the day and
year first above written.


                                      BECKER:
                                  
                                  
                                  
                                      /s/ Louis E. Becker 
                                      ------------------------------------------
                                      LOUIS BECKER, Individually
                                  
                                  
                                      VERTEX:
                                  
                                      VERTEX COMMUNICATIONS CORPORATION
                                  
                          
                          
                                      By: /s/ J. Rex Vardeman 
                                         ---------------------------------------
                                         J. REX VARDEMAN,
                                         President and Chief Executive Officer
                          
                          
                          
                                      VERTEX ACQUISITION CORPORATION
                          
                          
                          
                                       By: /s/ James D. Carter 
                                          --------------------------------------
                                          JAMES D. CARTER, 
                                          Vice President
                          




NONCOMPETITION AGREEMENT - Page 4



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