COMPTEK RESEARCH INC/NY
8-K, 1995-06-21
COMPUTER PROGRAMMING SERVICES
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<PAGE>   1



                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, DC  20549


                                    FORM 8-K

                                 CURRENT REPORT

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


                                 JUNE 21, 1995




                        COMPTEK RESEARCH, INC.
- - - - -------------------------------------------------------------------------------
           (Exact Name of Registrant as Specified in Charter)



          NEW YORK                 1-8502                      16-0959023
- - - - -------------------------------------------------------------------------------
 (State or Other                  (Commission                 (IRS Employer
 Jurisdiction of Incorporation)   File Number)              Identification No.)



 2732 TRANSIT ROAD, BUFFALO, NEW YORK                           14224-2523
- - - - -------------------------------------------------------------------------------
(Address of Principal Executive Offices)                        (Zip Code)


    Registrant's telephone number, including area code:    (716) 677-2523
                                                       -------------------------


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

                                    Page 1
<PAGE>   2
ITEM 2.          DISPOSITION OF ASSETS

                 (a)      On June 6, 1995, the registrant and its wholly owned
                          subsidiaries, Comptek Telecommunications, Inc. (CTI),
                          and Industrial Systems Service, Inc. (ISS), completed
                          a previously announced transaction providing for the
                          combination of ARIA Wireless Systems, Inc. ("ARIA"),
                          a New York corporation, ISS, and CTI to form a new
                          entity known as ARIA Wireless Systems, Inc. ("New
                          ARIA"), a Delaware corporation.  This transaction was
                          completed pursuant to a Reorganization Agreement
                          dated March 10, 1995, as amended, among ARIA, New
                          ARIA, Bydatel Corporation, the registrant, CTI, Rand
                          Capital Corporation, and Frank J. Perpiglia (the
                          "Reorganization Agreement").  A copy of the
                          Reorganization Agreement is attached as an exhibit
                          hereto and provides for ISS and CTI to transfer
                          substantially all of their operating assets and
                          certain liabilities to New ARIA.  Such operating
                          assets included manufacturing equipment, contracts,
                          and technology rights.

                          Concurrent with the transfer of assets from ISS and
                          CTI, ARIA completed a merger into New ARIA pursuant
                          to statutory requirements under New York and Delaware
                          laws, whereby the shareholders of ARIA (Bydatel
                          Corporation, CTI, Rand Capital Corporation, and Frank
                          Perpiglia) exchange their shares of ARIA for shares
                          of New ARIA.  Also, the Reorganization Agreement
                          provided for New ARIA to receive from Bydatel
                          Corporation full rights, title, and interest in a
                          U.S. patent and technology relating to a method for
                          wireless transmission of data.

                          In return for the contribution of assets, the
                          registrant and its subsidiaries received: 4,900
                          shares of New ARIA's Class A voting common stock
                          (representing 49% of the outstanding voting common
                          stock); 1,853 shares of New ARIA's Series CR-I
                          preferred stock with a 15% cumulative dividend, a
                          $1,000 per share liquidation preference, and a
                          mandatory redemption feature whereby the registrant,
                          as holder of the shares, may require New ARIA to
                          redeem the shares at the earlier of five years or an
                          initial public offering of New ARIA's stock; 48,951
                          shares of New ARIA's Series CR-II preferred stock
                          with no preferred dividend or mandatory redemption
                          feature, but with a $101.52 per share liquidation
                          preference and convertible, at the option of the
                          holder, into 4,895,100 shares of Class B
                          limited-voting common stock.  The New ARIA
                          certificate of incorporation provides, among other
                          things, for full voting rights to




                                    Page 2
<PAGE>   3
                          vest in the Class B shares at the time of an initial 
                          public offering of New ARIA's common stock.

                          In addition, the registrant is entitled to certain
                          annual payments (up to an aggregate of $164,285)
                          based upon product sales by New ARIA and holds a
                          promissory note payable by New ARIA in the amount of
                          $550,000 plus interest at the rate of prime plus 2%.

                          Prior to completing the transaction, CTI owned 34.5%
                          of the common stock of ARIA and, pursuant to a
                          shareholders' agreement, had the right to designate
                          two of ARIA's maximum of five directors.  In
                          connection with the transaction, the registrant       
                          received the right to designate two of New ARIA's
                          maximum of eight directors.  Prior to completing the
                          transaction, Frank J. Perpiglia was President and CEO
                          of CTI and ISS, and also served as Chairman,
                          President and CEO of ARIA.  In connection with the
                          transaction, Mr. Perpiglia was elected Chairman,
                          President and CEO of New ARIA, and he resigned all
                          positions associated with the registrant and its
                          subsidiaries.

                          The nature and amount of consideration and the
                          structure of the transaction was determined by
                          arms-length negotiations among representatives of the
                          registrant and its subsidiaries, Bydatel Corporation,
                          Rand Capital Corporation, and Mr.  Perpiglia.


ITEM 7.          FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND 
                 EXHIBITS.

                




                                    Page 3
<PAGE>   4


(b)      Proforma Financial Information as of March 31, 1995


        The  transaction, as described in Item 2(a) above, provided for the
registrant and its wholly-owned subsidiaries to transfer substantially all of
the operating assets and certain liabilities of the registrant's consolidating
subsidiaries to New ARIA in exchange for shares of common and preferred stock
of New ARIA.

        The Proforma Statement of Operations was computed assuming the
transaction was consummated at the beginning of the fiscal year ended March 31,
1995.  The Proforma Consolidated Statement of Operations reflects adjustments
to remove from operations the commercial telecommunications subsidiary 1995
operating results.  A corresponding adjustment is reflected in the equity in
net loss of affiliate as the  registrant's interest in this operation is
accounted for as an equity investment.  The proforma results of operations also
reflect the registrant's recording of its share of New ARIA's losses based on
the registrant's ownership of 49% of New ARIA Class A common voting shares. 
The equity pick-up of New ARIA losses at this higher percentage reflects the
registrant's  position as the most significant economic stakeholder of New
ARIA.  The  registrant  expects to similarly record its share of New ARIA's
earnings at this higher percentage until such time as its investment equals its
underlying share of New ARIA equity.

        The Proforma Consolidated Balance Sheet was computed assuming the
transaction was consummated at March 31, 1995, the registrant's most recent
reporting period.  The Proforma Consolidated Balance Sheet reflects adjustments
for the transfer of assets to New ARIA and a corresponding increase in the
registrant's investment in affiliate.




                                    Page 4
<PAGE>   5
                             COMPTEK RESEARCH, INC.
                                    PROFORMA
                     CONSOLIDATED CONDENSED BALANCE SHEETS
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                                            PROFORMA
                                                                    MARCH 31,          PROFORMA             MARCH 31,
                                                                      1995            ADJUSTMENTS             1995   
                                                                    --------          -----------           ---------
<S>                                                                <C>                 <C>                  <C>
ASSETS                                                                                 (Unaudited)          (Unaudited)

Current assets:
Cash and cash equivalents                                           $      71                               $      71
Receivables                                                             4,692              (100)(1)             4,592
Costs and estimated earnings in excess of
  billings on uncompleted contracts                                     5,750               (17)(1)             5,733
Inventories                                                             1,703            (1,444)(1)               259
Deferred income taxes                                                     172                                     172
Other                                                                     669              ( 39)(1)               630
                                                                    ---------           -------             ---------
     Total current assets                                              13,057            (1,600)               11,457
                                                                    ---------           -------             ---------
Equipment & leasehold improvements                                      3,092            (1,316)(1)             1,776
                                                                    ---------           --------            --------- 
Deferred income tax                                                        35               340(2)                375
Other assets                                                            4,957             2,881(1)              7,838
                                                                    ---------           -------             ---------
     Total other assets                                                 4,992             3,221                 8,213
                                                                    ---------           -------             ---------
     Total assets                                                   $  21,141               305              $ 21,446
                                                                    =========           =======             =========


LIABILITIES AND SHAREHOLDERS' EQUITY

Current liabilities:
Current installments of long-term debt                             $      187              (187)(2)         $      --
Accounts payable                                                        2,953              (653)(2)             2,300
Accrued salaries and benefits                                           2,783              (150)(2)             2,633
Other current liabilities                                               1,699             1,295 (2)             2,994
                                                                    ---------           -------             ---------
     Total current liabilities                                          7,622               305                 7,927
                                                                    ---------           -------             ---------

Long-term debt, excluding current installments                          2,244                                   2,244
                                                                     --------                                --------

Shareholders' Equity:
Common stock                                                               94                                      94
Additional paid-in capital                                              9,606                                   9,606
Retained earnings                                                       2,770                                   2,770
Less cost of treasury shares                                           (1,195)                                 (1,195)
                                                                     --------                                --------

     Total shareholders' equity                                        11,275                                  11,275
                                                                    ---------                                --------
Total liabilities and shareholders' equity                          $  21,141               305              $ 21,446
                                                                    =========          ========              ========
</TABLE>



                                    Page 5

<PAGE>   6
                             COMPTEK RESEARCH, INC.
                                    PROFORMA
                      CONSOLIDATED STATEMENT OF OPERATIONS


                    (In thousands, except per share amounts)



<TABLE>
<CAPTION>
                                                        YEAR ENDED                                    PROFORMA
                                                        MARCH 31,              PROFORMA               MARCH 31,
                                                           1995               ADJUSTMENTS               1995  
                                                     -------------          -------------           ------------

                                                                            (Unaudited)             (Unaudited)
<S>                                                   <C>                   <C>                     <C>
Net sales                                             $      57,835         $     (1,814)(3)        $      56,021
                                                      -------------         -------------            ------------  
Costs and expenses:
      Cost of sales                                   $      49,387         $     (1,989)(3)        $      47,398
      Selling, general and administrative                     6,380                 (808)(3)                5,432
                                                                                    (140)(5)

      Research and development                                2,356               (1,716)(3)                  640
      Special charge                                           (331)                                         (331)
      Other expense                                              73                  (45)(3)                   28
                                                      -------------         -------------            ------------      

      Total costs and expenses                        $      57,865         $     (4,698)           $      53,167
                                                      -------------         -------------            ------------

Income (loss) before income taxes and equity
 in net loss of affiliate                             $         (30)        $      2,884            $       2,854

Income tax expense (benefit)                          $         (83)        $      1,182 (3)        $       1,099
                                                      --------------        -------------           -------------

Income before equity in net
 loss of affiliate                                    $          53         $      1,702            $       1,755
Equity in net loss of affiliate                              (1,033)              (1,481)(4)
                                                      $                     $       (635)(4)        $      (3,149)
                                                      --------------        -------------            ------------- 

Net loss                                              $        (980)        $       (414)           $      (1,394)
                                                      --------------        -------------            ------------- 

Net loss per share                                    $        (.22)        $       (.10)           $        (.32)
                                                      ==============        =============           ==============

Weighted average number of common shares
                                                              4,373                4,373                    4,373
                                                      ==============         ============           ==============
</TABLE>


                                    Page 6

<PAGE>   7

              NOTES TO PROFORMA CONSOLIDATED FINANCIAL STATEMENTS


1)     As a result of the transaction, the registrant transferred assets
       associated with the commercial subsidaries to New ARIA and the 
       adjustments are primarily to account for the transfer of these assets.   
       Additionally, other assets are adjusted to include the registrant's
       increased investment in New ARIA.  Other asset adjustment are as
       follows:

<TABLE>
<CAPTION>
                                                                                       ADJUSTMENTS
                                                                                       (In 000's)       
                                                                                  ----------------------
                    <S>                                                           <C>
                    Software development costs                                    $     (1,590)       
                    Intangible assets arising from business acquisition                   (733)       
                    Telecommunication network costs                                       (412)       
                    Investment and receivable due from affiliate                         5,627
                    Other                                                                  (11)       
                                                                                  -------------        
                    Total other assets adjustment                                 $      2,881
                                                                                   ===========
</TABLE>


2)     The registrant provided funds to pay for current liabilities of the
       commercial telecommunications subsidiaries as of March 31, 1995.  
       The adjustments are primarily  for the  removal of these liabilities 
       and the addition of the Company's commitment to provide funds for 
       the payment of these liabilities.

3)     Proforma adjustment to the Statement of Operations represent fiscal year
       1995 operating results of the registrant's telecommunication subsidiary  
       which were transferred to New  ARIA.    The registrant recorded the
       telecommunication subsidiary's losses through its equity in net loss of
       affiliate.  See note 4.


4)     As a result of this transaction, New ARIA received contributed capital
       from two of its equity investors.  The registrant and  Bydatel
       Corporation are New ARIA's principal equity investors.  Assuming the
       transaction had occurred at the beginning of fiscal year 1995, the
       registrant would have recorded 87% of New ARIA's losses for fiscal year
       1995; thus the amount given is an adjustment to reflect 87% of New
       ARIA's losses for fiscal year 1995.

5)     The registrant received two series of preferred stock, which have an
       aggregate liquidation value that exceeds New ARIA's available equity by
       approximately $700,000.  The excess is treated as amortizable goodwill.
       This adjustment represents the amortization for fiscal 1995 had the
       transaction taken place at the beginning of the fiscal year.



                                    Page 7

<PAGE>   8


                 (c)      Exhibits

                          Reorganization Agreement dated March 10, 1995, as
                          amended (including as attachments thereto (i) the
                          Asset Purchase Agreement by and between Registrant,
                          CTI, and New ARIA dated May 9, 1995, (ii) Asset
                          Purchase Agreement by and between Registrant, ISS,
                          and New ARIA dated May 9, 1995, and (iii) Plan and
                          Agreement of Merger dated May 9, 1995, by and between
                          ARIA and New ARIA.


                                   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.

                                                COMPTEK RESEARCH, INC.



Date:    June 21, 1995                          By: /s/  John R. Cummings 
                                                   ---------------------------
                                                   John R. Cummings
                                                   Chairman, President and CEO





                                    Page 8
<PAGE>   9




                         REINSTATEMENT AND AMENDMENT TO

                            REORGANIZATION AGREEMENT

                              DATED MARCH 10, 1995






<PAGE>   10





                         REINSTATEMENT AND AMENDMENT TO

                            REORGANIZATION AGREEMENT

                    DATED  MARCH 10, 1995  (THE "AGREEMENT")





         The undersigned are all signatories to the Agreement which provided,
in Paragraph 16 thereof, that the transactions contemplated thereby were to be
closed by 9:00 a.m. on April 7, 1995, failing which the Agreement would
forthwith become null and void and of no effect.

         Notwithstanding that the Closing did not occur by April 7, 1995, and
has not yet occurred, the undersigned wish to proceed with the transactions
contemplated by the Agreement, and to also make some minor amendments to the
Agreement to reflect more current information.

         Accordingly, the undersigned agree that the Agreement is hereby
reinstated as originally executed, with the following amendments:

         1.     The fourth paragraph of the Preamble, which currently reads:

                "Whereas, Old Aria has purchased from Wolfson the shares
                formerly owned by him and the Shareholders Agreement amended to
                eliminate Wolfson as a party thereto, to reflect that he is no
                longer a shareholder of Old Aria, to reflect that Perpiglia is
                now a shareholder of Old Aria and a party to the Shareholders
                Agreement, and"


                IS HEREBY AMENDED TO READ AS FOLLOWS:


                "Whereas, Old Aria has purchased from Wolfson the shares
                formerly owned by him and the Shareholders Agreement amended to
                eliminate Wolfson as a party thereto, to reflect that he is no
                longer a shareholder of Old Aria, and to reflect that in
                connection with the consummation of the transactions
                contemplated by this Agreement Perpiglia will be purchasing
                from Old Aria, certain of the shares formerly owned by Wolfson
                and that Perpiglia is now a party to the Shareholders
                Agreement, as amended; and"


         2.     That Paragraph 2 (a) of the Agreement is amended by eliminating
                the words "dated March _____, 1995" in the two places where
                they appear.

<PAGE>   11




         3.     That Paragraph 3 (a) of the Agreement is amended by changing
                the words "face value of $173.00 per share and a liquidation
                value of $137.00 per share" to read "face value of $134.00 per
                share and a liquidation value of $101.52 per share."


         4.     Paragraph 3 (b) of the Agreement is amended by changing "994
                Shares to read 1,853 Shares", and by changing the words
                "liquidation value of $994,000" to read "liquidation value of
                $1,853,000".


         5.     Paragraph 6 (a) (ii) of the Agreement is amended by changing
                the words "liquidation value of $134.00 per share" to read
                "liquidation value of $101.52 per share."


         6.     Paragraph 16 of the Agreement is amended by changing "April 7,
                1995" to read "June 15, 1995", and by deleting the second
                sentence of that paragraph.


        IN WITNESS WHEREOF, this Reinstatement and Amendment has been executed
this 9th day of May, 1995.


                                        ARIA WIRELESS SYSTEMS, INC.,
                                        A New York Corporation

                                        By /s/ Frank J. Perpiglia
                                          -------------------------------------

                                        ARIA WIRELESS SYSTEMS, INC.,
                                        a Delaware Corporation

                                        By /s/ Frank J. Perpiglia
                                          -------------------------------------

                                        BYDATEL CORPORATION,
                                        A New York Corporation

                                        By /s/ John C. Eckis
                                          -------------------------------------

                                        COMPTEK RESEARCH, INC.

                                        By /s/ John R. Cummings
                                          -------------------------------------




                                       2

<PAGE>   12





                                        COMPTEK TELECOMMUNICATIONS, INC.


                                        By /s/ John R. Cummings
                                          -------------------------------------


                                        RAND CAPITAL CORPORATION


                                        By /s/ Donald A. Ross
                                          -------------------------------------



                                        /s/ Frank J. Perpiglia
                                        ---------------------------------------
                                        FRANK J. PERPIGLIA, INDIVIDUALLY





<PAGE>   13
                            REORGANIZATION AGREEMENT

                        DATED MARCH 10, 1995, AS AMENDED

<PAGE>   14
                            REORGANIZATION AGREEMENT



                 THIS AGREEMENT dated as of March 10, 1995, by and among:

        ARIA WIRELESS SYSTEMS, INC. (f/k/a Bison Data Corporation), a New York
        Corporation with its principal place of business located at 140 Mid  
        County Road, Orchard Park, New York  14127 ("Old Aria");

        ARIA WIRELESS SYSTEMS, INC., a Delaware Corporation with its principal 
        place of business located at 140 Mid County Road, Orchard Park, New 
        York 14127 ("New Aria");

        BYDATEL CORPORATION, a New York Corporation with its principal place of
        business located C/O Payment Plans, 2741 Transit Road, Elma, New York 
        14059 ("Bydatel");

        COMPTEK RESEARCH, INC., a New York Corporation with its principal office
        located at 2732 Transit Road, West Seneca, New York 14224 ("CRI");

        COMPTEK TELECOMMUNICATIONS, INC., a New York Corporation and a  
        wholly-owned subsidiary of Comptek Research, Inc., a New York
        Corporation with its principal office located at 140 Mid County Road,
        Orchard Park, New York  14127 ("CTI");

        RAND CAPITAL CORPORATION, a New York Corporation with its principal
        office  located at Suite 1300, Rand Building, 14 Lafayette Square,
        Buffalo, New York  14203 ("Rand"); and

        FRANK J. PERPIGLIA, an individual residing at 306 Heritage Place, Devon,
        Pennsylvania  19333 ("Perpiglia").


                            W I T N E S S E T H :
                            ===================

                WHEREAS, Old Aria, Bydatel, CTI and Rand, together with one
Joseph E. Wolfson ("Wolfson") were signatories to a certain Subscription and
Shareholders Agreement, dated September 26, 1991, dealing with the formation,
organization, operation, and financing of Old Aria ("Shareholders Agreement");
and

                 WHEREAS, Bydatel, CTI, Rand and Wolfson were the original
shareholders of Old Aria; and

<PAGE>   15
        WHEREAS, the Shareholders Agreement provides that it may be modified,
amended or revoked by a written agreement signed by all of the current parties
thereto; and

        WHEREAS, Old Aria has purchased from Wolfson the shares of Old Aria
formerly owned by him and the Shareholders Agreement amended to eliminate
Wolfson as a party thereto, to reflect that he is no longer a shareholder of
Old Aria, to reflect that Perpiglia is now a shareholder of Old Aria and a
party to the Shareholders Agreement, and

        WHEREAS, the current parties to the Shareholders Agreement are Old
Aria, Bydatel, CTI, Perpiglia and Rand; and

        WHEREAS, the current parties to the Shareholders Agreement wish to
effect a reorganization of Old Aria and to terminate and revoke the
Shareholders Agreement; and

        WHEREAS, New Aria has been incorporated in Delaware with a view to it
being the entity which will carry on the business formerly conducted by Old
Aria and CTI; and

        WHEREAS, it is the objective of the proposed reorganization to
consolidate the sales and marketing functions formerly performed by Old Aria,
with the manufacturing, engineering and technical support functions formerly
performed by CTI into a new entity, New Aria, which will be owned initially by
CRI, Rand, Bydatel and Perpiglia.

        NOW, THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt and adequacy of which are mutually
acknowledged, the parties agree as follows:

         1.      ORGANIZATION.

                 Except with respect to those provisions thereof specifically
         adopted herein, the Subscription and Shareholders Agreement dated the
         26th day of September 1991, among Bison Data Corporation, Bydatel
         Corporation, Comptek Telecommunications, Inc., Rand Capital
         Corporation,  and Joseph E. Wolfson, is hereby revoked and terminated
         effective upon the closing of the transfer of assets referred to
         herein.

         2.      TRANSFER OF ASSETS BY CTI AND ISS.

         (a)     At the Closing, as hereinafter defined, CTI will transfer to
         New Aria substantially all of its assets, and books and records
         relating thereto, including inventory currently used by CTI in the
         design, manufacture and production of the wireless data system known
         as Data Movers, together with contracts with third parties, cash, and
         the Common Stock of Old Aria owned by it, all of which shall be
         identified and transferred pursuant to an Asset Purchase Agreement
         dated March _____, 1995, the basic form of which is annexed hereto as
         Exhibit A.  In addition, CRI, as sole shareholder of Industrial
         Systems Service, Inc., a Pennsylvania Corporation ("ISS"), shall cause
         ISS to transfer to New Aria substantially all of its assets, as set
         forth in an Asset Purchase Agreement dated March _____, 1995, the





                                      2
<PAGE>   16
         basic form of which is annexed hereto as Exhibit B.  In connection
         with such transfers, New Aria shall assume substantially all of the
         liabilities of ISS and CTI as more fully set forth in the Asset
         Purchase Agreements referred to above.

         (b)     Notwithstanding the provisions of Paragraph 2 (a) above, there
         are certain assets, because of the requirement of obtaining consents,
         the ownership of which cannot be immediately transferred.  These
         assets include, without limitation, Multiple Address System ("MAS")
         Licenses granted to CTI by the Federal Communications Commission and
         listed on CTI's Balance Sheet as "Network Licenses".  With respect to
         these MAS Licenses, CTI shall, forthwith, after the Closing, undertake
         to obtain the consent of the Federal Communications Commission to said
         transfer, and pending obtaining such consents, New Aria shall have the
         right to utilize said MAS Licenses, the consideration for which is set
         forth in Paragraph 3(b) hereof.

         (c)     Among the other assets now presently listed on CTI's balance
         sheet, there is certain technology consisting of "Enhanced Technology"
         with respect to the wireless systems produced by CTI for Old Aria,
         which "Enhanced Technology" shall be transferred to New Aria at the
         Closing, the consideration for which is set forth in Paragraph 3(c)
         hereof.

         3.      CONSIDERATION FOR TRANSFER OF ASSETS BY CTI AND ISS.

         At the Closing of the transfer of assets, New Aria shall issue and
         deliver to CRI:

         (a)     In consideration of the transfer of assets set forth in
                 Paragraph 2(a) above,

                 (i)      48,951 shares of its convertible Preferred Stock
                 ($.01 par value) Series CR-II having a face value of $173.00
                 per share and a liquidation value of $137.00 per share, which
                 shares shall be convertible into New Aria's Class B Common
                 Stock at the rate of 100 shares of Class B Common Stock for
                 each share of Series CR-II Stock, or in the aggregate
                 4,895,100 shares of Class B Common Stock;

                 (ii)     4,800 shares of New Aria's Class A Common Stock.

         (b)     In consideration of the transfer of assets set forth in
         Paragraph 2 (b), New Aria shall issue and deliver to CRI, 994 shares
         of its non-convertible Preferred Stock ($.01 par value) Series CR-I,
         having a liquidation value of $1,000.00 per share with interest
         accruing at the rate of 15% per annum, payable together with its
         liquidation value of $994,000, at the option of CRI after five years
         from the date of issuance or upon New Aria closing a Public Offering
         as hereinafter defined, whichever first occurs.  For purposes of this
         Reorganization Agreement, a Public Offering shall mean the
         registration under the Securities and Exchange Commission, pursuant to
         the Securities Act of 1933, as amended (the "33 Act"), of shares of
         its equity securities, or securities convertible into equity
         securities, and the subsequent offering and sale thereof pursuant to
         such registration, in a transaction or transactions which do not
         qualify for exemption from registration under said 33 Act, through an
         underwriter or underwriters, on a firm commitment basis.





                                      3
<PAGE>   17
         (c)     In consideration of the transfer of the assets set forth in
         Paragraph 2(c) above, New Aria shall issue and deliver to CRI 859
         shares of its Series CR-I stock.

         4.      TRANSFER BY BYDATEL OF CEMA PATENT, TECHNOLOGY AND LICENSE.

         (a)     Effective upon the Closing of the transfer of assets by CTI
         and ISS referred to in Paragraph 2 above, and subject to the
         conditions set forth in Paragraph 4 (c) below, Bydatel shall sell,
         transfer and assign to New Aria all of Bydatel's rights, title and
         interests in and to (i) United States Patent No. 4,907,244 (the
         "Patent") relating to a method for transmitting data in multiple
         access data communications networks utilizing a Collision-Eliminating
         Multiple Access ("CEMA") protocol, (ii) all proprietary information
         relating to the Patent and CEMA (the "Technology"), (iii) the License
         Agreement dated October 29, 1991 with Old Aria relating to the Patent
         and the Technology ("License Agreement"), and (iv) the tradename and
         trademark "DataMover" (the "Tradename").

         (b)     In consideration for the sale, transfer and assignment of the
         Patent, Technology, License Agreement and Tradename, New Aria shall
         pay the following consideration to Bydatel:

                 (i)      the issuance at Closing of 1,000 shares of Series 
                          BC-I Stock; and

                 (ii)     a payment of $200 per unit for each manufactured
                 signal transmission box which utilized the Patent, CEMA, the
                 Technology or the Tradename sold and shipped by New Aria, said
                 per unit payment shall be made within ten (10) business days
                 following the end of the calendar month in which the sale was
                 completed.  These payments are to be made in lieu of payments
                 of Old Aria pursuant to Paragraph 14 (a) of the Shareholders
                 Agreement.  As of March 1, 1995, Bydatel had received a total
                 of $470,500 pursuant to said Paragraph 14 (a) out of a maximum
                 payable of $1,920,000  and the maximum payable pursuant to
                 this Paragraph 3 (b) (iii) shall be $1,449,500.

                 (iii)    following the completion of the total aggregate per
                 unit payment referred to in clause (ii) above, an annual
                 payment equal to one and one-half percent (1.5%) of net
                 product sales (gross product sales less taxes, freight,
                 insurance and duties) for CEMA-based products occurring in
                 each year for a period of five (5) years; the first year
                 (i.e., a twelve-month period) shall commence with the first
                 calendar month after the month in which the maximum per unit
                 payment is achieved; payment under this clause (iii) shall be
                 made within forty-five (45) days after the end of each
                 twelve-month period.

         (c)     Bydatel's obligation to sell, transfer and assign the Patent,
         Technology, License Agreement and Tradename shall be subject to the
         following conditions, which must be satisfied, or waived by Bydatel,
         or on prior to the Closing:





                                      4
<PAGE>   18
                 (i)      the consent to such sale, transfer and assignment by
                 the New York State Science and Technology Foundation, Rand
                 Capital Corporation, John C. Eckis, Walter J. Panfil, Tech
                 Ventures III, Paul Cherin and Charles Ganim (collectively
                 "Bydatel's Secured Creditors") and their release of all liens,
                 security interests and collateral assignments in the Patent;
                 and

                 (ii)     the consent of New Aria to Bydatel's grant of
                 security interests in the 1,000 shares of Series BC-I issued
                 to Bydatel to each of Bydatel's Secured Creditors.

         (d)     Bydatel agrees that upon the request of New Aria, it will
         provide such further documentation as may be necessary to effectuate
         the transfer and assignment to New Aria of the Patent Technology, the
         License Agreement and the Trade Name, and shall represent and warrant
         that nothing has come to its attention which would lead it to believe
         that it does not have a good and marketable title to the items to be
         transferred and assigned.

         5.      CAPITALIZATION OF NEW ARIA AS OF CLOSING.

         As of the Closing of the transfer of assets, New Aria will be
         authorized to issue:

         (a)     10,000 shares of Class A Common Stock ($.01 par value) of
         which 100 shares have been issued to CRI for cash and 4,800 shares
         shall have been issued in connection with the transfer of assets as
         set forth in Paragraph 3 (a) (ii) above;

         (b)     19,990,000 shares of Class B Common Stock which shall be
         non-voting and none of which shall have been issued;

         (c)     500,000 shares of Preferred Stock ($.01 par value) which may
         be issued in series as designated by the Board of Directors and of
         which:

                 (i)      48,951 shares designated as Series CR-II Stock,
                 convertible into Class B Common Stock, all of which shall have
                 been issued to CRI in connection with the transfer of assets
                 as set forth in Paragraph 3 (a) (i) above;


                 (ii)     1,853 shares designated as Series CR-I Stock which
                 shall be non-convertible and all of which shall have been
                 issued to CRI in connection with the transfer of assets
                 referred to in Paragraph 3 (b) and (c) above;

                 (iii)    1,000 shares designated as Series BC-I Stock which
                 shall be non-convertible; none of this Series shall have been
                 issued and is intended to be issued at a later date to Bydatel
                 in connection with the transfer of the CEMA Technology as set
                 forth in Paragraph 4 (b) (i) above.





                                      5
<PAGE>   19
         6.      RIGHTS AND PREFERENCES OF STOCK.

         (a)     The rights and preferences of the various Series of Preferred
         Stock shall be set forth in a Certificate of Designation or Amendment
         to the Certificate of Incorporation of New Aria, in form reasonably
         satisfactory to counsel for New Aria, Bydatel and CRI.  The basic
         terms of each Series shall be:

                 (i)      The Series CR-I Stock shall be non-voting, have a 
                 face value of $1,000 per share and shall have a liquidation 
                 value of $1,000 per share plus accrued but unpaid dividends.  
                 The dividend shall be 15% or $150 per annum which shall 
                 accrue but not be paid until liquidation or redemption.  This 
                 Series shall be redeemable at the option of the holder upon 
                 the closing of a Public Offering by New Aria or upon five 
                 years from date of issuance whichever first occurs.  It shall 
                 be preferred as to liquidation and dividends over all other 
                 classes or series of New Aria's stock except with respect to 
                 the Series BC-I Stock as to which it shall be pari passu with
                 respect to dividends (except as to rate) and on liquidation.

                 (ii)     The Series CR-II Stock shall be convertible into
                 Class B Stock at the rate of 100 shares of Class B Stock for
                 each share of Series CR-II; it shall have a liquidation value
                 of $137.00 per share; it shall be non-voting and shall neither
                 accrue nor pay dividends.

                 (iii)    The Series BC-I Stock shall be non-voting, have a
                 fact value of $1,000 per share plus accrued but unpaid
                 dividends.  The dividends shall be 8% or $80 per annum, which
                 shall not be paid until liquidation or redemption.  This
                 Series shall be redeemable at the option of the holder upon
                 the closing of a Public Offering by New Aria or upon five
                 years from date of issuance, whichever first occurs.  It shall
                 be preferred as to liquidation and dividends over all other
                 classes or series of New Aria's stocks except with respect to
                 the Series CR-I Stock as to which it shall be pari passu with
                 respect to dividends (except as to rate) and on liquidation.

         7.      MERGER OF OLD ARIA AND NEW ARIA.

         Effective at the Closing, Old Aria and New Aria shall enter into a
Plan of Merger in substantially the form annexed hereto as Exhibit C  which
shall contain, among others, the following substantive provisions:

         (a)     The surviving corporation shall be New Aria.

         (b)     The then shareholders of Old Aria shall tender all of their
                 shares of Common Stock of Old Aria to New Aria as follows:

                 (i)      Rand will tender its 23,000 shares of Old Aria Common
                 in exchange for 1,800 shares of New Aria Class A Common
                 (voting) and 1,798,200 shares of New Aria Class B Common
                 (non-voting).





                                      6
<PAGE>   20


                 (ii)     Bydatel will tender its 23,000 shares of Old Aria
                 Common in exchange for 1,800 shares of New Aria Class A Common
                 (voting) and 1,798,200 shares of New Aria Class B Common
                 (non-voting).

                 (iii)    Perpiglia will tender his 12,778 shares of Old Aria
                 Common in exchange for 1,500 shares of New Aria Class A Common
                 (voting) and 998,500 shares of New Aria Class B Common
                 (non-voting).

                 (iv)     CTI will tender its 31,000 shares of Old Aria Common
                 for cancellation.

                 (v)      The 10,222 shares of Old Aria Common of the 23,000
                 shares formerly owned by Wolfson but not purchased by
                 Perpiglia and currently held as Treasury Stock by Old Aria
                 shall be cancelled.

         (c)     The Board of Directors shall consist of not less than five,
         nor more than eleven members.  The initial Directors shall consist of
         the present four Directors as designated in the Incorporator's
         Statement.  Subsequent to the merger, a fifth Director may be
         designated by CRI.  Thereafter, at the Annual meeting of Shareholders,
         CRI shall be entitled to nominate two Directors, and Rand, Bydatel and
         Perpiglia one each.  Upon such nomination, CRI, Rand, Bydatel and
         Perpiglia each agree to vote their shares of Common Stock entitled to
         vote for Directors, for the election of the nominees of the others.
         Additional Directors may be designated by the Board of Directors in
         accordance with the By-Laws.  The right of a party to have a nominee
         elected pursuant to this paragraph shall terminate upon such party
         ceasing to be a stockholder of New Aria or upon the closing on an
         initial Public Offering by New Aria.

        8.      EXECUTION OF PLAN OF MERGER AND FILING OF CERTIFICATE OF MERGER.

         The Certificate of Merger shall not be filed with the Secretary of
State of the State of Delaware until the Plan of Merger is approved by the
Boards of Directors of CRI, Rand and Bydatel, in addition to the Boards of
Directors of Old Aria and New Aria.

         9.      POST-MERGER OWNERSHIP OF STOCK.

         Immediately upon consummation of the merger, the following shall be
the holdings of the shareholders of New Aria:


<TABLE>
         (a)     Class A (Voting) Common Stock: Authorized 10,000 Shares
<CAPTION>           

                          HOLDER                           NO. OF SHARES
                          ------                           -------------
                          <S>                              <C>

                          CRI                                  4,900
                          Rand                                 1,800
                          Bydatel                              1,800
                          Perpiglia                            1,500
                          TOTAL                               10,000

        
</TABLE>




                                      7
<PAGE>   21

<TABLE>
         (b)     Class B (Non-Voting) Common Stock: Authorized 19,990,000 Shares
<CAPTION>
                          HOLDER                           NO. OF SHARES
                          ------                           -------------
                          <S>                              <C>
                          Rand                                1,798,200
                          Bydatel                             1,798,200
                          Perpiglia                             998,500
                          TOTAL                               4,594,900



                          Reserves                            4,895,100 For Conversion of CR-II

                 Unissued and Unreserved:                    10,510,000

</TABLE>

         (c)     Preferred Stock, Series CR-I (non-convertible)

                          HOLDER                           NO. OF SHARES

                          CRI                                   1,853

         (d)     Preferred Stock, Series CR-II (Convertible into Class B Common
                                                  Stock at 100 shares
                                                  of Class
                                                  B Common per share of Series
                                                  CR-II)

                          HOLDER                           NO. OF SHARES

                          CRI                                    48,951

         (e)     Preferred Stock, Series BC-I (non-convertible)

                          Bydatel                               1,000

         10.     EMPLOYEE BENEFIT PLANS.

         Following the Closing, the parties agree to use their best efforts to
cause New Aria to adopt, for the benefit of its employees, a Stock Appreciation
Rights ("SAR") Plan having generally the following provisions:

         There are intended to be 885,000 "rights" allocated to the employees
         in the discretion of the Board of Directors at no cost to the
         employees.  Each right is related to the value of a share of New Aria
         Class A Common Stock which for purposes of the SAR Plan will be deemed
         to have an Initial Value of $4.00 per share.  Upon exercise of a
         "right" the holder will be entitled to receive cash only, and not
         shares of Class A Stock, in an amount equal to its then market value
         or $4.00 per share, whichever is higher, multiplied by the number of
         rights he has exercised.  The rights are non-transferrable and are
         expected to be exercisable by the holder on January 1, 1998, or
         earlier upon disability or by his estate if he dies prior to that
         time.  If employment is terminated prior to January 1, 1998 for any
         reason other than





                                                                 8
<PAGE>   22
         disability or death, the "rights" will lapse.  If employment is
         terminated after January 1, 1998, the holder (or his estate ) would
         have to exercise the "rights" within ninety days.  In the event that
         Class A Common Stock of New Aria were to become listed on a national
         stock exchange or quoted on the National Associates of Securities
         Dealers Quotation system ("NASDQ"), the holders of all rights would be
         required to immediately exercise the same.  The "Exercise Value" of a
         "right" will be calculated at the end of each fiscal quarter of New
         Aria.  Until such time as New Aria's Class A Common Stock is listed on
         a national stock exchange, or traded through NASDQ, the Exercise Value
         of a "right" would be deemed to be two times its "book value" as of
         the end of the most recent fiscal quarter as determined by the
         independent outside auditors of New Aria, or of some other independent
         appraiser.  In the event that the Class A Common Stock of New Aria is
         split or otherwise adjusted, the number of rights and their price
         shall be similarly adjusted pro tanto so that the holder of rights
         will receive the same economic value that he would have received but
         for such split or adjustment.

         Notwithstanding the present intent of the parties, the adoption of any
         such plan must be done by the Board of Directors of New Aria.  In the
         exercise of their fiduciary duty, the members of the Board may decline
         to adopt the above plan, or having adopted it, may terminate, amend or
         replace it.

         11.     PARTICIPATION IN FUTURE FINANCINGS.

         (a)     If at any time (or from time to time) New Aria, prior to
         closing of its initial Public Offering, proposes to raise capital by
         means of a sale of equity or an incurrence of debt (a "Private
         Investment Financing"), it shall give written notice to Bydatel,
         Comptek and Rand.  Included with such notice shall be a summary of the
         material terms of the proposed Private Investment Financing.  Bydatel,
         Comptek and Rand shall each have the right to participate in the
         proposed Private Investment Financing up to an amount equal to their
         then respective percentage ownership of the New Aria Common Stocks
         outstanding at the time of the proposed Private Investment Financing.
         Bydatel, Comptek and Rand shall each have twenty (20) days from the
         date such notice is given in which to advise New Aria in writing of
         its intent to participate ("Election to Participate") in the Private
         Investment Financing and the amount of their participation.  If such
         Election to Participate is duly given to New Aria, the electing party
         shall be obligated to complete and fund its participation at closing
         of the Private Investment Financing on the same terms as are offered
         to and accepted by the other investors.  Provided, however, if the
         Private Investment Financing is not completed within ninety (90) days
         of the date of the initial notice issued by New Aria, then proposed
         financing shall be deemed abandoned and any further financing shall be
         deemed a new proposal requiring a new notice.

         (b)     Notwithstanding anything to the contrary in subparagraph (a),
         "Private Investment Financing" shall not be deemed to include a
         line-of-credit or term loan provided by a state or federally chartered
         bank which does not include equity participation or conversion.





                                      9
<PAGE>   23
         12.     TERM.

         This Agreement shall terminate upon the Closing by New Aria of its
initi Public Offering.

         13.     AMENDMENTS.

         This Agreement may be modified, amended or revoked only by written
agreement signed by all of the then-current parties hereto.

         14.     GOVERNING LAW.

         This Agreement shall be governed by the laws of the State of New York.

         15.     CONDITIONS TO CLOSING

         The Closing of the transactions contemplated by this Reorganization
Agreement shall be subject to the fulfillment or mutual waiver of the following
conditions:

         (a)     Each of the corporate parties hereto shall deliver a
Secretarial Certificate indicating:

                 (i)      in the case of Old Aria, New Aria, CRI, CTI and Rand,
                 that this Reorganization Agreement has been approved by their
                 respective Boards of Directors and that the officers having
                 executed this Reorganization Agreement had authority to so
                 execute the same, and have authority to execute such further
                 documents as may be necessary or desirable, upon advice of
                 their respective counsel, to complete the closing of said
                 transactions.

                 (ii)     In the case of Bydatel, that this Reorganization
                 Agreement, including the provision for the transfer and
                 assignment of the Patent, the Technology, the License
                 Agreement, and the Trade Name to New Aria, have been approved
                 by its Board of Directors and Shareholders.

                 (iii)    Such Secretarial Certificate shall include a copy of
                 the resolutions adopted, that they were so adopted at a
                 meeting duly called and held, that the same have not been
                 amended, rescinded or modified and are currently in full force
                 and effect.

         (b)     No action, in law or equity, shall have been commenced or
         threatened, which places in question the validity of this
         Reorganization Agreement or the transactions contemplated thereby, or
         which seeks to enjoin the same;

         (c)     The Board of Directors of New Aria has approved an Amendment
         to its Certificate of Incorporation authorizing the issuance of the
         Class A and Class B Common Stock, and the Series CR-I, CR-II and BC-I
         Preferred Stock as set forth in Paragraph 5 of this Reorganization
         Agreement;





                                      10
<PAGE>   24
         (d)     New Aria, CTI and ISS shall have executed the Asset Purchase
         Agreements referred to in Paragraph 2 (a) of this Reorganization
         Agreement;

         (e)     Old Aria and New Aria shall have had the Merger Agreement
         referred to in Paragraph 7 of this Reorganization Agreement approved
         by their respective Boards of Directors and Shareholders, and have
         executed the same by their appropriate officers.

         (f)     Perpiglia shall have purchased from Old Aria 12,778 shares of
         its Common Stock for $66,446 in cash or a promissory note;

         (g)     Bydatel and CRI shall have entered into an agreement with
         respect to reimbursement of part of the moneys provided by CRI in the
         settlement with Wolfson;

         (h)     New Aria and Perpiglia shall have entered into an Employment
         Agreement on terms satisfactory to each of them.

         16.     CLOSING.

         The Closing of the transactions contemplated by this Reorganization
Agreement shall take place at the office of New Aria at 9:00 a.m.  on April 7,
1995, or at such other time and place as to which the parties may agree.





                                      11
<PAGE>   25
                 IN WITNESS WHEREOF, the parties hereto have duly signed and
acknowledged this Agreement as of the date first above written.


                                           ARIA WIRELESS SYSTEMS, INC.,
                                           a New York Corporation

                                           By:  /s/ Frank J. Perpiglia
                                               ------------------------
                                           Name:                      
                                                -----------------------
                                           
                                           Title:  President
                                                  ---------------------
                                           
                                           ARIA WIRELESS SYSTEMS, INC.,
                                           a Delaware Corporation


                                           By:    /s/ Frank J. Perpiglia
                                               -------------------------
                                           Name:                       
                                                ------------------------
                                           Title:  President
                                                 -----------------------
                                           

                                           BYDATEL CORPORATION,
                                           a New York Corporation,


                                           By:     /s/ John C. Eckis
                                              -------------------------
                                           Name:   John C. Eckis
                                                -----------------------
                                           Title:  President
                                                 ----------------------
                                           
                                           COMPTEK RESEARCH, INC.


                                           By:   /s/ John R. Cummings
                                               ------------------------
                                           Name:   John R. Cummings
                                                -----------------------
                                           Title:  President & Chief 
                                                   Executive Officer
                                                 -----------------------
                                           



                                      12
<PAGE>   26

                                        COMPTEK TELECOMMUNICATIONS, INC.


                                                By:    /s/ John R. Cummings
                                                     ------------------------
                                                Name:  John R. Cummings
                                                      -----------------------
                                                Title:  Chairman of the Board
                                                      -----------------------
                                                


                                        RAND CAPITAL CORPORATION


                                                By:     /s/ Donald A. Ross
                                                   --------------------------
                                                Name:   Donald A. Ross
                                                     ------------------------
                                                Title:  President
                                                      -----------------------
                                                


                                        FRANK J. PERPIGLIA, INDIVIDUALLY


                                                /s/ Frank J. Perpiglia
                                                -----------------------------




                                      13
<PAGE>   27

                 _____________________________________________

                            ASSET PURCHASE AGREEMENT

                                 BY AND BETWEEN

                             COMPTEK RESEARCH, INC.

                                      AND

                        COMPTEK TELECOMMUNICATIONS, INC.

                                      AND

                          ARIA WIRELESS SYSTEMS, INC.




                            DATED AS OF MAY 9, 1995

                 _____________________________________________
<PAGE>   28
                               TABLE OF CONTENTS

SECTION
PAGE

<TABLE>
<S>      <C>                                                                                                 <C>
1.       Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  1
                                                                                                  
2.       Sale of Properties and Assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  2
                                                                                                  
3.       Purchase Consideration   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  3
         (a)     Preferred Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  3
         (b)     Assumed Liabilities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  3
         (c)     Litigation Support and Assistance  . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  3
         (d)     Sales Tax  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  3
                                                                                                  
4.       Instruments of Transfer; Assumption of Liabilities; Further Assurances   . . . . . . . .  . . . . .  4
         (a)     Seller's Deliveries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  4
         (b)     Buyer's Deliveries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  4
         (c)     Cash Distribution  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  4
         (d)     Other Transfer Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  4
                                                                                                  
5.       Record Retention   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  5
                                                                                                  
6.       Representations and Warranties of the Seller   . . . . . . . . . . . . . . . . . . . . .  . . . . .  5
         (a)     Organization; Good Standing; Power; Etc. . . . . . . . . . . . . . . . . . . . .  . . . . .  5
         (b)     Authorization; Effective Agreement.  . . . . . . . . . . . . . . . . . . . . . .  . . . . .  5
         (c)     Title to Property and Assets . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  5
         (d)     Agreements, Etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  6
         (e)     Litigation, Etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  6
         (f)     Cooperation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  6
                                                                                                  
7.       Representations and Warranties of the Buyer  . . . . . . . . . . . . . . . . . . . . . .  . . . . .  6
         (a)     Organization; Good Standing; Power . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  6
         (b)     Authorization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  6
         (c)     Capitalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  6
         (d)     Litigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  7
                                                                                                  
8.       Covenants of the Buyer   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  7
         (a)     Due Diligence  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  7
         (b)     Sales Tax  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  7
         (c)     Employment Offer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  7
         (d)     Authorization and Delivery of Shares . . . . . . . . . . . . . . . . . . . . . .  . . . . .  7
         (e)     Effective Agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  7
                                                                                                  
9.       Bulk Sales   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  8
                                                                                                  
10.      Indemnification by Seller  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  8
                                                                                                  
11.      Indemnification by Buyer   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  8
</TABLE>                                                                      
<PAGE>   29
<TABLE>
<S>      <C>                                                                               <C>
12.      Amendments; Waivers, Etc.  . . . . . . . . . . . . . . . . . . . . . .  . . . . .  9
                                                                                
13.      Expenses   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  9
                                                                                
14.      Public Disclosure  . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  9
                                                                                
15.      Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .  9
                                                                                
16.      Notices, Etc.  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . 10
                                                                                
17.      Assignment   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . 10
                                                                                
18.      Applicable Law   . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . 10
                                                                                
19.      Entire Agreement   . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . 11
                                                                                
20.      Counterparts   . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . 11
                                                                                
21.      Headings   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . 11
                                                                                
22.      Binding Effect; Benefits   . . . . . . . . . . . . . . . . . . . . . .  . . . . . 11
</TABLE>                                                                        
                                                                                




                                       ii
<PAGE>   30
                               LIST OF SCHEDULES

1(a)             Purchased Assets

1(b)             Retained Assets

1(c)             Retained Liabilities

3                Allocation of Purchase Price

6(d)             Agreements

6(e)             Litigation, Etc.





                                      iii
<PAGE>   31
                            ASSET PURCHASE AGREEMENT



         Asset Purchase Agreement dated as of May 9, 1995, by and between
COMPTEK RESEARCH, INC., a New York corporation ("Comptek"), COMPTEK
TELECOMMUNICATIONS, INC., a New York corporation ("Seller"), and ARIA WIRELESS
SYSTEMS, INC., a Delaware corporation ("Buyer").

                            W I T N E S S E T H :

        WHEREAS, Comptek is the parent corporation and sole shareholder of
Seller; and

        WHEREAS, the Seller desires to sell to the Buyer, and the Buyer desires
to purchase from the Seller, substantially all of the properties and assets,
subject to certain liabilities, of Seller, all upon the terms and conditions
hereinafter set forth;

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

        1.       DEFINITIONS.  As used in this Agreement, terms defined in the
preamble and recitals of this Agreement shall have the meanings set forth
therein and the following terms shall have the meanings set forth below.

         "Affiliate" shall mean, with respect to any person or entity, any
shareholder, subsidiary, officer, director or partner of such person or entity
or any other person which directly or indirectly controls, is controlled by or
is under common control with such person or entity.

         "Agreement" shall mean this Asset Purchase Agreement and all Schedules
and Exhibits hereto, as the same may from time to time be amended.

         "Assumed Liabilities" shall mean all Liabilities of the Seller except
for the Retained Liabilities described on Schedule 1(c) hereto.

         "Closing" shall mean the closing of the transactions contemplated by
this Agreement on the Closing Date at the offices of Comptek, 2732 Transit
Road, Buffalo, New York 14224, or at such other place as the parties may
mutually agree.

         "Closing Date" shall mean May 9, 1995, or such other date as may be
agreed to by the parties to this Agreement.





                                     -1-
<PAGE>   32
         "Code" shall mean the Internal Revenue Code of 1986 and all
regulations promulgated thereunder, as the same have from time to time been
amended.

         "Comptek" shall mean Comptek Research, Inc., a New York corporation,
the parent and sole owner of Seller.

         "Financial Statements" shall mean (a) the financial statements of
Seller as of and for the period ended March 31, 1995 (including the balance
sheet), prepared by the Seller and previously delivered to the Buyer.

         "Liabilities" shall mean all debts, liabilities, taxes (including any
sales or transfer taxes on the sale of the Purchased Assets), obligations under
contracts, leases, agreements and commitments, and other obligations of every
kind and character of the Seller as the same may exist at the Closing (whether
accrued, absolute, contingent or otherwise, and whether due or to become due)
or which may arise in the future based upon events or a state of facts existing
at the Closing.

          "Purchased Assets" shall mean the assets described in Schedule 1(a)
and all assets reflected on the Financial Statements or acquired by the Seller
in the ordinary course of business and consistent with past practice of the
Seller since the date of such Financial Statements, except for those assets
which have been transferred or disposed of in the ordinary course of business
and consistent with past practice of the Seller after the date of such
Financial Statements or as otherwise permitted by this Agreement): PROVIDED,
HOWEVER, that the Purchased Assets shall not include the Retained Assets.

         "Retained Assets" shall mean the assets described in Schedule 1(b)
          hereto.

         "Retained Liabilities" shall mean the Liabilities described in
          Schedule 1(c) hereto.

         2.      SALE OF PROPERTIES AND ASSETS.  At the Closing, the Seller
will sell, transfer, assign, convey and deliver to the Buyer, and the Buyer
will purchase, accept and acquire from the Seller, all of the Purchased Assets,
"AS IS, WHERE IS."

         BUYER ACKNOWLEDGES AND AGREES THAT ALL ASSETS BEING TRANSFERRED OR
LICENSED HEREUNDER ARE BEING TRANSFERRED OR LICENSED ON AN "AS IS, WHERE IS"
BASIS, AND THAT EXCEPT AS EXPRESSLY SET FORTH IN SECTION 6, SELLER IS MAKING NO
REPRESENTATION OR WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, RESPECTING THE
ASSETS, AS TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR ANY OTHER
MATTER.  BUYER ACKNOWLEDGES THAT BUYER HAS INFORMED ITSELF AS TO SELLER'S
BUSINESS OPERATIONS, AND BUYER FURTHER ACKNOWLEDGES AND AGREES THAT SELLER
MAKES NO REPRESENTATIONS OR WARRANTY OF ANY KIND WITH RESPECT TO THE BUSINESS
OPERATIONS.





                                     -2-
<PAGE>   33
         3.      PURCHASE CONSIDERATION.  The aggregate consideration to be
paid by the Buyer for the Purchased Assets shall consist of (i) Preferred and
Common Shares of Buyer as set forth in Section 3(a) hereof, (ii) the assumption
by the Buyer of the Assumed Liabilities as set forth in Section 3(b) hereof,
and (iii) the other consideration as set forth in this Section 3.  The Seller
and the Buyer agree that the aggregate consideration for the Purchased Assets
shall be allocated as set forth in Schedule 3 hereto.

         (a)     PREFERRED SHARES.  The Buyer shall issue to Seller the
following shares of its capital stock:

                 (i)      One Thousand Eight Hundred Fifty-Three (1,853) shares
                          of its cumulative redeemable Preferred Stock ($.01
                          Par Value), Series CR-I having a face value and
                          liquidation preference of $1,000 per share plus
                          accrued dividends; and

                 (ii)     Thirty Thousand Five Hundred Sixty-One (30,561)
                          shares of convertible Preferred Stock ($.01 Par
                          Value), Series CR-II having a face value of $134 per
                          share and a liquidation preference of $101.52 per
                          share.

                 (iii)    Four Thousand Eight Hundred (4,800) shares of Class A
                          Common Stock ($.01 Par Value).

         (b)     ASSUMED LIABILITIES.  At the Closing, the Buyer will assume
all Liabilities except the Retained Liabilities, as set forth on Schedule 1(c)
hereto.  The Buyer will not assume or otherwise have any responsibility for any
of the Retained Liabilities.

         (c)     LITIGATION SUPPORT AND ASSISTANCE.  Comptek and Seller are
currently involved in certain litigation matters related to Seller's business
operations.  As a material element of consideration which is essential to the
consummation of the transaction set forth in this Agreement, Buyer agrees to
provide at no additional cost to Comptek and Seller such personnel,
administrative, logistical, and clerical support, excluding legal fees, as
Comptek and Seller may request from time to time in support of or related to
said litigation.  Requests for such litigation support may be made orally or in
writing.  All requests shall be directed to the attention of Buyer's president.
In the event that Buyer objects that the requested litigation support as
unreasonably burdensome or beyond its abilities to respond, it shall so advise
Comptek's chairman of the board of directors who shall determine whether or not
the request should be modified.  Pending determination by Comptek's chairman of
the board of directors, Buyer shall use its best efforts to comply with all
requests.

         (d)     SALES TAX.  The purchase price is exclusive of any sales, use,
or similar taxes arising directly out of the transfer of the Purchased Assets
to Buyer.  Buyer shall be liable for the payment of such taxes, if any.





                                     -3-
<PAGE>   34
                 4.       INSTRUMENTS OF TRANSFER; ASSUMPTION OF LIABILITIES;
                          FURTHER ASSURANCES.

         (a)     SELLER'S DELIVERIES.  Contemporaneous with the completion of
this and other related transactions, the Seller shall deliver to the Buyer:

                 (i)      Bills of sale for the Purchased Assets;

                 (ii)     Such other instrument or instruments of transfer, in
                          such form, as shall be reasonably necessary or
                          appropriate to vest in the Buyer good, valid, and
                          marketable title to the Purchased Assets, free and
                          clear of all liens and encumbrances other than the
                          Assumed Liabilities.

         (b)     BUYER'S DELIVERIES.  Contemporaneously with the completion of
this and other related transactions, the Buyer shall deliver to Comptek and
Seller:

                 (i)      The stock and related instruments referenced in
                          Section 3(a);

                 (ii)     Assumption instruments in a form reasonably
                          satisfactory to the Seller whereby the Buyer agrees
                          to assume the Assumed Liabilities; and

                 (iii)    Indemnification/Hold-Harmless Agreement; and

                 (iv)     Waiver and Release of any and all existing or 
                          potential claims, known or unknown.

         (c)     CASH DISTRIBUTION.  Included in the Purchased Assets is the
commitment of Comptek to provide cash funding in the amount of $18,000, less
any amount provided since March 31, 1995, to be used as working capital in the
operations of Seller's business as may be required from time to time as
identified in cash flow projections prepared by Seller's controller.  Buyer
acknowledges that between April 1, 1994, and March 31, 1995, Comptek has
provided $4,642,000 in funding to Seller, which funding has contributed to the
value of Seller's assets and business operations being purchased by Buyer.
Comptek recognizes Buyer as the successor in interest to the operation of
Seller's business and agrees to continue such cash funding to Buyer from time
to time on the same terms as previously provided to Seller up to the maximum
amount of $18,000, plus provide for the payment liabilities identified in
Schedule 1(c) in the aggregate amount of $1,343,000.

         (d)     OTHER TRANSFER INSTRUMENTS.  Following the Closing, at the
reasonable request of the Buyer, the Seller shall deliver any further
instruments of transfer and take all reasonable action as may be necessary or
appropriate (i) to vest in the Buyer all of the Seller's title to the Purchased
Assets, and (ii) to transfer to the Buyer all of the Seller's rights to
licenses and permits necessary for the operation of the Purchased Assets.





                                     -4-
<PAGE>   35
         5.      RECORD RETENTION.  The Buyer shall retain the books and
records of the Seller acquired hereunder and, unless otherwise consented to in
writing by the Seller, the Buyer shall not, for the period of five (5) years
following the Closing, destroy or otherwise dispose of the books and records of
the Seller acquired by the Buyer hereunder.  Thereafter, the Buyer shall not
destroy or otherwise dispose of such books and records without first offering
to surrender to the Seller such books and records or any portion thereof which
the Buyer may intend to destroy or dispose of.  Upon reasonable notice, the
Buyer shall make such books and records available to the Seller, its attorneys,
accountants and representatives for examination and copying.

         6.      REPRESENTATIONS AND WARRANTIES OF THE SELLER.  The Seller
represents and warrants to the Buyer, as follows:

         (a)     Organization; Good Standing; Power; Etc.  The Seller is a duly
organized, validly existing corporation in good standing under the laws of the
State of New York, and it has the corporate power, authority and capacity to
own, lease and operate its properties, and to carry on its business as the same
is now being conducted.

         (b)     Authorization; Effective Agreement.  The Seller has the
requisite corporate power, authority and capacity to enter into this Agreement
and to perform all of their obligations hereunder subject only to approval and
ratification by its Board of Directors.  All proceedings required to be taken
by Comptek and the Seller to authorize the execution and delivery of this
Agreement and the performance of their obligations hereunder have been duly
taken, and this Agreement constitutes the legal, valid and binding obligation
of Comptek and the Seller, enforceable against it in accordance with its terms.
The execution, delivery and performance of this Agreement by the Seller does
not and will not: (i) conflict with, violate or result in the breach of any of
the terms or conditions of, or constitute a default under, the Certificate of
Incorporation or By-Laws of the Seller, or any contract, agreement, commitment,
indenture, mortgage, pledge, note, bond, license, permit or other instrument or
obligation to which either the Seller is party, or by which the Seller or its
assets may be bound or affected, or any law, regulation, ordinance or decree to
which the Seller or its assets are subject, except for requirements for
consents of governmental authorities, persons or entities referred to in
Section 6(c) hereof; or (ii) result in the creation or imposition of any lien,
security interest, charge, encumbrance, restriction or right, including rights
of termination or cancellation, in or with respect to, or otherwise materially
adversely affect, any of the properties, assets or business of the Seller.

         (c)     Title to Property and Assets.  To Seller's knowledge, Seller
has good and marketable title to all of its properties and assets, subject to
no mortgage, pledge, lien, security interest, lease, charge, encumbrance or
conditional sale or other title retention agreement except as provided for in
the Financial Statements.  No property or asset owned or leased by the Seller
is in violation of any applicable building, zoning or environmental law in
respect thereof.





                                     -5-
<PAGE>   36
         (d)     AGREEMENTS, ETC.  To Seller's knowledge, set forth on Schedule
6(d) hereto is a description of all indentures, mortgages, agreements, leases,
contracts, arrangements, commitments, instruments, understandings or
obligations, oral or written, to which the Seller is a party or to which it or
any of the Purchased Assets is subject.

         (e)     LITIGATION, ETC.  Except as set forth on Schedule 6(e), there
is no material suit, action or litigation, administrative hearing, arbitration,
labor controversy or negotiation, or other proceeding or governmental inquiry
or investigation affecting Seller or its properties (including environmental or
land use proceedings) pending or, to knowledge of Seller, threatened against
Seller.  There are no judgments, consent decrees or injunctions against,
affecting or binding upon Seller or its assets or any officer or director
thereof.  To Seller's knowledge, Seller is in compliance with all laws,
ordinances, requirements, orders and regulations applicable to it.  None of the
foregoing will be affected by the transactions contemplated by this Agreement.

         (f)     COOPERATION.  It shall use its best efforts to obtain all
consents and authorizations of third parties and to make all filings with and
give all notices to third parties which may be necessary or reasonably required
in order to effect the sale contemplated by this Agreement and shall take such
additional actions as the Buyer may reasonably request in writing to cooperate
so that the transactions contemplated by this Agreement may be expeditiously
consummated.

         7.      REPRESENTATIONS AND WARRANTIES OF THE BUYER.  The Buyer
                 represents and warrants to the Seller as follows:

         (a)     ORGANIZATION; GOOD STANDING; POWER.  The Buyer is a
corporation duly organized, validly existing and in good standing under the
laws of the State of Delaware.  The Buyer has the requisite power, authority
and capacity to own, lease and operate its properties and to carry on its
intended business.

         (b)     AUTHORIZATION.  The Buyer has all requisite power, authority
and capacity to enter into this Agreement and to perform all of its obligations
hereunder subject only to approval and ratification by its Board of Directors.
The Buyer has taken or will have taken prior to the Closing, all necessary
action to approve this Agreement and the performance of its obligations
hereunder.

         (c)     CAPITALIZATION.  Buyer's entire authorized capital stock
consists of (i) Twenty Million (20,000,000) shares of common stock, par value
$.01 per share, of which One Hundred (100) shares were issued and outstanding
as of March 31, 1995, and (ii) Five Hundred Thousand (500,000) shares of
preferred stock, par value $.01 per share, of which none were issued and
outstanding as of March 31, 1995.





                                     -6-
<PAGE>   37
         (d)     LITIGATION.  There is no material suit, action or litigation,
administrative hearing, arbitration or other proceeding or governmental inquiry
or investigation affecting the Buyer or its properties pending or, to the best
knowledge of the Buyer, threatened against the Buyer.

         8.      COVENANTS OF THE BUYER.  The Buyer covenants and agrees that,
except as otherwise consented to in writing by the Seller or as permitted by
this Agreement:

         (a)     DUE DILIGENCE WAIVER.  Buyer is fully familiar with the Assets
and Liabilities to be transferred, as well as the business activities of
Seller.  Buyer waives any further requirements relative to a due diligence
investigation and audit with respect to Seller.

         (b)     SALES TAX.  It shall be liable for any sales or other related
taxes which accrue as a result of the transfer of Assets pursuant to this
Agreement.  Buyer shall indemnify Seller for any such sales taxes that it pays
or is required to pay.  Buyer shall have the right to challenge the
appropriateness or the amount of any such tax.

         (c)     EMPLOYMENT OFFER.  It will offer employment to certain of
Seller's employees, and obtain acceptance of such offers from a sufficient
number of Seller's employees, contingent upon the Closing, such that Seller
will be required to terminate a number of employees which does not trigger the
sixty (60) day notice requirements of the federal WARN statute.

         (d)     AUTHORIZATION AND DELIVERY OF SHARES.  All shares of Buyer's
common and preferred stock required to be issued hereunder will be duly
authorized and validly issued, fully paid and nonassessable, free and clear of
all liens, pledges, encumbrances, claims, equities and conditions enforceable
by third parties.

         (e)     EFFECTIVE AGREEMENT.  The execution, delivery and performance
of this Agreement by the Buyer and the consummation of the transactions
contemplated hereby do not and will not (i) conflict with, violate or result in
the breach of any of the terms or conditions of, or constitute a default under,
the Certificate of Incorporation or the By-Laws of the Buyer, or any contract,
agreement, commitment, indenture, mortgage, pledge, note, bond, license, permit
or other instrument or obligation to which the Buyer is a party or by which the
Buyer or its assets may be bound or affected, or any law, regulation, ordinance
or decree to which the Buyer or its assets are subject; or (ii) result in the
creation or imposition of any lien, security interest, charge, encumbrance,
restriction or right, including rights of termination or cancellation, in or
with respect to, or otherwise materially adversely affect, any of the
properties, assets or business of the Buyer (other than liens, security
interests, charges, encumbrances, restrictions or rights arising in connection
with the financing of the transactions contemplated hereby).





                                     -7-

<PAGE>   38
         9.      BULK SALES.  Buyer waives compliance by Seller with the bulk
sales law of the State of New York and any state or jurisdiction in which
Seller (i) was doing business, (ii) had property located, or (iii) had existing
creditors on the Closing Date.

         10.     INDEMNIFICATION BY SELLER.

         (a)     Seller shall defend, indemnify and hold harmless Buyer,
Buyer's directors, officers, employees and agents and all persons acting on
their behalf from and reimburse the aforesaid parties for any and all Buyer's
Damages (as defined in Section 10(b)) in the manner and to the extent set forth
in this Section 10.

         (b)     The term "Buyer's Damages" shall include all losses, costs,
expenses (including reasonable attorneys' fees and experts' fees and expenses
and other costs and expenses incident to any suit, action, investigation, claim
or proceeding), fees, liabilities and damages sustained by the party entitled
to indemnity prior to any reimbursement therefor:

                 (i)      arising from any breach of a representation or
warranty of Seller contained in or made pursuant to this Agreement; and

                 (ii)     resulting from a default in the performance of any of
the covenants or obligations that Seller is required to perform under this
Agreement;

provided, however, that Seller shall not be required to pay any of Buyer's
Damages unless the claim for such Buyer's Damages is made by Buyer and received
by Seller prior to the second anniversary of the execution of this Agreement.
Notwithstanding the foregoing provisions hereof to the contrary, it is
understood and agreed that the amount of Buyer's Damages payable by Seller to
Buyer hereunder shall in no event exceed the Purchase Price.

         11.     INDEMNIFICATION BY BUYER.

         (a)     From and after the Closing Date, Buyer shall indemnify and
hold harmless Seller, its Affiliates (as defined in Section 1) and their
directors, officers, employees and agents and all persons acting on their
behalf from and reimburse the aforesaid parties for any and all Seller's
Damages (as defined in Section 11(b)) in the manner and to the extent set forth
in this Section 11.

         (b)     The term "Seller's Damages" shall include all losses, costs,
expenses (including reasonable attorneys' and experts' fees and expenses and
other costs and expenses incident to any suit, action, investigation, claim or
proceeding), fees, liabilities and damages sustained by the party entitled to
indemnity prior to any reimbursement therefor:

                 (i)      arising from any breach of a representation or
warranty of Buyer contained in or made pursuant to this Agreement;





                                     -8-
<PAGE>   39
                 (ii)     resulting from a default in the performance of any of
the covenants or obligations that Buyer is required to perform under this
Agreement;

                 (iii)    resulting from or arising in connection with any
liability assumed by Buyer as contemplated by this Agreement;

                 (iv)     resulting from or arising in connection with Buyer's
management, control, ownership or operation of the Purchased Assets or
business; or

                 (v)      resulting from any claim which alleges that
activities of Buyer or any licensees of Buyer infringe or violate a third
party's intellectual property rights.

         12.     AMENDMENTS; WAIVERS, ETC.  This Agreement may be amended,
modified and supplemented by written agreement approved by the Seller and the
Buyer at any time prior to the Closing Date with respect to any of the terms
contained herein.  Prior to or on the Closing Date, the parties hereto may in
writing (i) extend the time for the performance of any of the obligations or
other acts of the parties hereto, (ii) waive any inaccuracies in the
representations and warranties contained herein or in any document delivered
hereunder, and (iii) waive compliance with any of the agreements or conditions
contained herein.

         13.     EXPENSES.  Each of the parties will be responsible for payment
of its own expenses (including legal fees) incurred in connection with the
transactions contemplated by this Agreement, regardless of whether or not such
transactions are consummated.

         14.     PUBLIC DISCLOSURE.  Neither the Buyer nor the Seller shall
make any public release of information regarding the matters contemplated
herein except (i) that a press release in a mutually agreed form shall be
issued by the Seller as promptly as is practicable after the execution of this
Agreement, (ii) that the Buyer and the Seller may each continue such
communications with employees, customers, suppliers, lenders, lessors,
shareholders, and other particular groups as may be legally required or
necessary or appropriate and not inconsistent with the best interest of the
other party or the prompt consummation of the transactions contemplated by this
Agreement, and (iii) as required by law.

         15.     CONFIDENTIALITY.  The Buyer agrees to treat all information
concerning the Seller furnished, or to be furnished, by or on behalf of the
Seller in accordance with the provisions of this Section 15 (collectively, the
"Information"), and to take, or abstain from taking, other actions set forth
herein.  The Information will be used solely for the purpose of evaluating the
transaction contemplated hereby, and will be kept confidential by the Buyer and
its officers, directors, employees, representatives, agents, and advisors;
provided that (i) any of such Information may be disclosed to the Buyers'
officers, directors, employees, representatives, agents, and advisors who need
to know such information for the purpose of evaluating the transaction, (ii)
any disclosure of such information may be made to which the Seller consents in
writing and (iii) such information may be disclosed if so required by law.  If
the transaction is not consummated, the Buyer will return to the Seller all
material





                                     -9-

<PAGE>   40
containing or reflecting the information and will not retain any copies,
extracts, or other reproductions thereof.  The provisions of this Section 15
shall survive the termination of this Agreement.

         16.     NOTICES, ETC.  All notices, consents, demands, requests,
approvals and other communications which are required or may be given hereunder
shall be in writing and shall be deemed to have been duly given if delivered by
hand or mailed certified first class mail, postage prepaid:

         (a)     If to the Buyer:

                 ARIA Wireless Systems, Inc.
                 140 Mid County Drive
                 Orchard Park, New York  14127

                 Attention:       Frank J. Perpiglia
                                  President and CEO


         (b)     If to the Seller:

                 Comptek Telecommunications, Inc.
                 2732 Transit Road
                 Buffalo, New York  14224

                 Attention:       John R. Cummings
                                  Chairman

or to such other person or persons at such address or addresses as may be
designated by written notice hereunder.

         17.     ASSIGNMENT.  Except as set forth in this Agreement, neither
the Seller nor the Buyer may assign or convey this Agreement or any of their
respective rights or obligations hereunder to any other party; provided,
however, that Seller may assign its rights hereunder to Comptek or its
Affiliates.

         18.     APPLICABLE LAW.  This Agreement shall be governed by and
construed and interpreted in accordance with the laws or the State of New York.

         19.     ENTIRE AGREEMENT.  This Agreement and all Exhibits and
Schedules hereto embody the entire agreement and understanding of the parties
hereto and supersede any prior agreement or understanding between the parties.





                                     -10-

<PAGE>   41
         20.     COUNTERPARTS.  This Agreement may be executed in several
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same document.

         21.     HEADINGS.  Headings of the Sections in this Agreement are for
reference purposes only and shall not be deemed to have any substantive effect.

         22.     BINDING EFFECT; BENEFITS.  This Agreement shall inure to the
benefit of and be binding upon the parties hereto and their respective
successors and assigns; provided, however, that nothing in this Agreement,
expressed or implied, is intended to confer on any person other than the
parties hereto or their respective successors and assigns, any rights and
remedies, obligations or liabilities under or by reason of this Agreement.

         IN WITNESS WHEREOF, each of the parties hereto has executed this
Agreement as of the date first above written.



COMPTEK TELECOMMUNICATIONS, INC.                   COMPTEK RESEARCH, INC.


By:      /s/ John R. Cummings                      By:  /s/ John R. Cummings 
         ---------------------------                    ----------------------
         John R. Cummings
         John R. Cummings Chairman
         Chairman, President and CEO



ARIA WIRELESS SYSTEMS, INC.


By:      /s/ Frank J. Perpiglia                    
         ---------------------------                    
         Frank J. Perpiglia
         Chairman, President and CEO





                                     -11-

<PAGE>   42
<TABLE>
                                 SCHEDULE 1(a)

                        COMPTEK TELECOMMUNICATIONS, INC.
                                PURCHASED ASSETS
                              AS OF MARCH 31, 1995

<CAPTION>
                                                                 (IN $000'S)
                                                                 ------------
<S>                                                             <C>
ACCOUNTS RECEIVABLE                                                 $1,888

INVENTORY                                                              $84

OTHER CURRENT ASSETS                                                   $32

FIXED ASSETS (NET BOOK VALUE):

      Furniture & Fixtures                            $14

      Machinery & Equipment                          $578

      Leasehold Improvements                         $174

                   Total                                              $766

CASH FUNDING DUE FROM COMPTEK RESEARCH, INC.                           $18

OTHER ASSETS

      Capital Software                                              $1,590

      Goodwill                                                         203

      Network Licenses                                                 943

      Other                                                             10
                                                                 ------------

Total Balance Sheet Assets                                          $5,534

Additional Technology Purchased                                       $910
                                                                 ------------
TOTAL ASSETS                                                        $6,444
                                                                 ============
</TABLE>






<PAGE>   43

                                 SCHEDULE 1(b)

                        COMPTEK TELECOMMUNICATIONS, INC.
                                RETAINED ASSETS



Seller shall retain the following assets:

1.       Any and all proceeds, awards, compensation or other recovered damages
         arising from or related to the litigation involving Seller, its parent
         and affiliates against Poly Circuits, Inc./M~Wave, Inc., and the New
         York Hospital.

2.       Any and all accounts receivable, credits, claims, and debts owed to
         the Seller but removed by Seller from its balance sheet prior to March
         31, 1995.






<PAGE>   44

                                 SCHEDULE 1(c)

                        COMPTEK TELECOMMUNICATIONS, INC.
                              RETAINED LIABILITIES



Seller shall retain the following liabilities:

1.       Any and all liabilities, costs, and expenses arising from or related
         to the litigation involving Seller, its parent and affiliate against
         Poly Circuits/M~Wave, Inc.

2.       Accounts Payable ($145,000 as of March 31, 1995).

3.       Other Accrued Liabilities ($440,000 as of March 31, 1995).

4.       Long-Term Debt of $167,000 (Note Payable to DJR NE ENTERPRISES, INC.).

5.       Long-Term Deferred Tax Liability of $340,000.






<PAGE>   45


                                   SCHEDULE 3

                        COMPTEK TELECOMMUNICATIONS, INC.
                          ALLOCATION OF PURCHASE PRICE



CUMULATIVE PREFERRED STOCK (CR-I)

         -      Technology                   910,000
                                             
         -      MAS Networks                 943,000            $1,853,000


CONVERTIBLE PREFERRED STOCK (CR-II) AND CLASS A COMMON

         -      All Other Assets                                 4,591,434
                                                                ----------

TOTAL STOCK                                                     $6,444,434



<PAGE>   46



                                 SCHEDULE 6(d)

                        COMPTEK TELECOMMUNICATIONS, INC.
                                   AGREEMENTS


The following agreements are specifically assumed:

         Employment Agreements by and between Seller and/or its parent and
         James Morgan, Theodore Bosworth, Joseph Faraci, Allan Scott, and
         Eugene Massucci; and

         Sublease by and between Seller and Moog, Inc., dated April 25, 1994,
         for the premises located at 140 Mid County Drive, Orchard Park, New
         York; and

         Software License and related agreements by and between Seller's parent
         and Symix, Inc.; and

         Marketing and Sales Assistance Agreement dated June 2, 1994, by and
         between Seller and Bison Data Corporation; and

         Exclusive Manufacturing and Engineering Services Agreement dated
         October 29, 1991, by and between Seller and Bison Data Corporation.






<PAGE>   47
<TABLE>
                                 SCHEDULE 6(d)

                              AGREEMENTS (CON'T.)


                        COMPTEK TELECOMMUNICATIONS, INC.

                            MAS SUMMARY INFORMATION
                            AS OF DECEMBER 23, 1994


EXISTING MULTIPLE ADDRESS SYSTEM ("MAS") STATIONS


<CAPTION>
====================================================================================================================================
                                                                        MONTHLY                                               DATA
LOCATION                  TOWER SITE                                    CHARGES                  LEASE TERM                   RATE
====================================================================================================================================
<S>                       <C>                                          <C>             <C>                                <C>
AKRON, OH                 #1 Cascade Plaza Albany, NY                   $300.00                   06/15/94                  9.6 Kbps
                                                                                       Automatic one-year renewals           25 KHz
                                                                                       unless 30 days termination
                                                                                       notice is given
- - - - ------------------------------------------------------------------------------------------------------------------------------------
Albany, NY #1             A.E. Smith State Office Bldg.                $279.60 ?                  09/03/97                9.6 Kbps
                          Albany, NY                                                       (Limited Assignability)        25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
                                                                   
Albany, NY #2             Pinnacle Road                                 $322.80                   12/15/95                9.6 Kbps
                          New Scotland, NY                                                                                25 KHz
                          (Capital Choice Television)              
- - - - ------------------------------------------------------------------------------------------------------------------------------------
                                                                   
ARLINGTON, VA             5217 19th Road North                          $650.00                   11/14/94                9.6 Kbps
                          Arlington, VA                                                                                   25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
                                                                   
BOSTON, MA                John Hancock Mutual Life                      $850.00                   08/01/94                9.6 Kbps
                          Insurance Building                                                                              25 KHz
                          200 Clarendon Street                     
                          Boston, MA                               
- - - - ------------------------------------------------------------------------------------------------------------------------------------
BUFFALO, NY #1-A          Marine Midland Building                       $600.00                   10/01/94                9.6 Kbps
                          Buffalo, NY                                                                                     25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
                                                                   
BUFFALO, NY #1-B          Marine Midland Building                       $600.00                   10/01/94                9.6 Kbps
                          Buffalo, NY                                                                                     25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
BUFFALO, NY #2            Buffalo Crushed Stone                         $600.00                   05/10/94                9.6 Kbps
                          Alden, NY                                                                                       25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
Charlotte, NC             First Union Bank of North Carolina            $600.00                   02/15/95                9.6 Kbps
                          400 South Tryon Street                                                                          25 KHz
                          Charlotte, NC                            
- - - - ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>                                                           
                                                                   



<PAGE>   48
<TABLE>
                                 SCHEDULE 6(d)

                              AGREEMENTS (CON'T.)


<CAPTION>
====================================================================================================================================
                                                                         MONTHLY                                             DATA
 LOCATION                  TOWER SITE                                    CHARGES                  LEASE TERM                 RATE
====================================================================================================================================
<S>                        <C>                                           <C>                <C>                             <C>
   Chicago, IL               One First National Plaza                      $350.00                   01/01/95               9.6 Kbps
                             Chicago, IL                                                    (Automatic renewal for one       25 KHz
                                                                                          additional year unless 60 days
                                                                                              prior notice is given)
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   Cincinnati, OH            TBD - Site Move Application Pending             TBD                        TBD                19.2 kbps
                                                                                                                             25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   CLEVELAND, OH             Society Tower                                 $540.00         07/30/93 (Automatic one month    9.6 Kbps
                             Cleveland, OH                                                    extensions thereafter)         25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   COLUMBUS, OH              Huntington Center                             $430.00                   11/30/94               9.6 Kbps
                             41 High Street                                                                                  25 KHz
                             Columbus, OH                        
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   Detroit, MI-A             Book Tower Building                           $260.00                   11/01/96               9.6 Kbps
                             Detroit, MI                                                                                     25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   Detroit, MI               Book tower Building                           $230.00                   11/01/96               9.6 Kbps
                             Detroit, MI                                                                                     25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   ERIE, PA                  Erie Summit Tower                             $500.00                   07/31/94               9.6 Kbps
                             Erie, PA                                                     (Automatic renewal for two-year    25 KHz
                                                                                            term unless 90 days advance
                                                                                             written notice is given)
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   HARTFORD, CT              60 Washington Street                          $350.00                Month to Month            9.6 Kbps
                             Hartford, CT                                                                                    25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   Honolulu, HI              Five Regents Condominium                      $200.00                   02/28/95              19.2 Kbps
   Installation to be        Project                                       mo 13-24          (Two additional one year        25 KHz
   completed 03/94           2888 Ala Lima Street                          $210.00         options upon 4 months advance
                             Honolulu, HI                                  mo 25-36               written notice)
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   INDIANAPOLIS, IN          Aul Building                                  $570.00                Month to Month            9.6 Kbps
                             Indianapolis, IN                                                                                25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
   LAS VEGAS, NV             Harrah's                                      $500.00                 12/31/94                 9.6 Kbps
                             Las Vegas, NV                                                (Automatic one-Year renewal        25 KHz
                                                                                         unless 90 days advance written
                                                                                               notice is given)
- - - - ------------------------------------------------------------------------------------------------------------------------------------
                                                                 
</TABLE>                                                         
                                                                 



<PAGE>   49
<TABLE>
                                 SCHEDULE 6(d)

                               AGREEMENTS (CON'T.)

<CAPTION>
====================================================================================================================================
                                                                MONTHLY                                                   DATA
 LOCATION                  TOWER SITE                           CHARGES                  LEASE TERM                       RATE
====================================================================================================================================
<S>                       <C>                                  <C>            <C>                                        <C>       
Minneapolis, MN           IDS Center                           $360.00                   11/01/96                        9.6 Kbps  
                          Minneapolis, MN                                       (Subject to termination on                25 KHz   
                                                                                11/01/95 if 90 days advance                        
                                                                                 written notice is given)                          
- - - - ------------------------------------------------------------------------------------------------------------------------------------
ORLANDO, FL               Bithlo Tower Company                 $610.00                   11/15/94                        9.6 Kbps  
                          Bithlo, FL                                            (Automatic one year renewal               25 KHz   
                                                                              unless 60 days advance written                       
                                                                                       notice given)                               
- - - - ------------------------------------------------------------------------------------------------------------------------------------
PHOENIX, AZ               Shaw Butte Tower                     $125.00                Month to Month                     9.6 Kbps  
                          Phoenix, AZ                                                                                     25 KHz   
                          (location to be moved)                                                                                   
- - - - ------------------------------------------------------------------------------------------------------------------------------------
Pittsburgh, PA #1         Echo 2                               $475.00                   06/30/98                        9.6 Kbps  
                          122 Bluebell Street                                 (Subject to earlier termination             25 KHZ   
                          Pittsburgh, PA                                        on 90 days advance written                         
                                                                                          notice)                                  
- - - - ------------------------------------------------------------------------------------------------------------------------------------
PITTSBURGH, PA #2         QED Tower                            $550.00                   08/01/94                        9.6 Kbps  
                          Berthoud Street                                     (One year renewal upon 30 days              25 KHz   
                          Pittsburgh, PA                                          advance written notice)                          
- - - - ------------------------------------------------------------------------------------------------------------------------------------
PORTLAND, OR              Healy/heights                        $185.00                   11/01/94                        9.6 Kbps  
                          Portland, OR                                            (Renewal for up to four                 25 KHz   
                                                                              additional one year terms upon                       
                                                                              60 days advance written notice)                      
- - - - ------------------------------------------------------------------------------------------------------------------------------------
ROCHESTER, NY #1          935 Thayer Road                      $660.00                   07/31/94                        9.6 Kbps  
                          Fairport, NY                                                                                    25 KHz   
- - - - ------------------------------------------------------------------------------------------------------------------------------------
Rochester #2              East Avenue                                                                                    9.6 Kbps  
                          Rochester, NY                                                                                   25 KHz   
- - - - ------------------------------------------------------------------------------------------------------------------------------------
St.Louis, MO              Mercantile Center                    $287.00                   07/01/96                        9.6 Kbps
                          St. Louis, MO                                       (Subject to 90 days notice of               25 KHz
                                                                                  cancellation is given)
- - - - ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>                                                                      

<PAGE>   50
<TABLE>
                                 SCHEDULE 6(d)

                               AGREEMENTS (CON'T.)


<CAPTION>
====================================================================================================================================
                                                                          MONTHLY                                              DATA
   LOCATION                  TOWER SITE                                   CHARGES                  LEASE TERM                  RATE
====================================================================================================================================
<S>                       <C>                                             <C>            <C>                                 <C>
St.Petersburg,            Southtrust Building                             $325.00                  11/30/94                 9.6 Kbps
FL(Installation to be     150 Second Avenue, North                                       (Automatic renewal unless 90         25 KHz
completed 03/94           St. Petersburg, FL                                            days advance written notice is
                                                                                                    given)
- - - - ------------------------------------------------------------------------------------------------------------------------------------
SAN ANTONIO, TX           San Antonio Marriott                            $430.00                  12/31/94                 9.6 Kbps
                          101 Bowie Street                                                                                    25 KHz
                          San Antonio, TX
- - - - ------------------------------------------------------------------------------------------------------------------------------------
SAN DIEGO, CA             1010 Second Avenue                              $495.00                  12/20/94                 9.6 Kbps
                          San Diego, CA                                                                                       25 KHz
- - - - ------------------------------------------------------------------------------------------------------------------------------------
Seattle, WA               Columbia Seafirst Center                        $335.00                  03/01/96                 9.6 Kbps
                          701 Fifth Avenue                                                (Self renewing from year to         25 KHz
                          Seattle, WA                                                   year subject to 90 days advance
                                                                                         written notice of cancellation)
- - - - ------------------------------------------------------------------------------------------------------------------------------------
Syracuse, NY              WJD Tower                                       $325.00                  03/31/96                 9.6 Kbps
                          409 Makyes Road                                                                                     25 KHz
                          Onondaga, NY
- - - - ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>




<PAGE>   51
                                 SCHEDULE 6(e)

                        COMPTEK TELECOMMUNICATIONS, INC.
                                   LITIGATION



International Chamber of Commerce Arbitration brought against Seller by IVD
Corporation and Aicesa S.A. de C.V., and the related action by Seller in the
United States District Court for the Western District of New York seeking to
stay and dismiss said arbitration with respect to Seller; and

Counterclaim filed by The New York Hospital against Seller which is currently
pending before the New York State Supreme Court located in New York County.





<PAGE>   52


                 _____________________________________________

                            ASSET PURCHASE AGREEMENT

                                 BY AND BETWEEN

                             COMPTEK RESEARCH, INC.

                                      AND

                        INDUSTRIAL SYSTEMS SERVICE, INC.

                                      AND

                          ARIA WIRELESS SYSTEMS, INC.




                            DATED AS OF MAY 9, 1995

                 _____________________________________________

<PAGE>   53

<TABLE>
<CAPTION>
                                        TABLE OF CONTENTS

SECTION                                                                                           PAGE
- - - - ------------------------------------------------------------------------------------------------------
<S>      <C>                                                                                       <C>
1.       Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
                                                                                         
2.       Sale of Properties and Assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
                                                                                         
3.       Purchase Consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
         (a)    Preferred Shares  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
         (b)    Assumed Liabilities   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
         (c)    Litigation Support and Assistance   . . . . . . . . . . . . . . . . . . . . . . . .  3
         (d)    Sales Tax   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
                                                                                         
4.       Instruments of Transfer; Assumption of Liabilities; Further Assurances . . . . . . . . . .  3
         (a)    Seller's Deliveries   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
         (b)    Buyer's Deliveries  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
         (c)    Other Transfer Instruments  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
                                                                                         
5.       Record Retention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
                                                                                         
6.       Representations and Warranties of the Seller . . . . . . . . . . . . . . . . . . . . . . .  4
         (a)    Organization; Good Standing; Power; Etc.  . . . . . . . . . . . . . . . . . . . . .  4
         (b)    Authorization; Effective Agreement.   . . . . . . . . . . . . . . . . . . . . . . .  5
         (c)    Title to Property and Assets  . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
         (d)    Agreements, Etc.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
         (e)    Cooperation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
                                                                                         
7.       Representations and Warranties of the Buyer  . . . . . . . . . . . . . . . . . . . . . . .  5
         (a)    Organization; Good Standing; Power  . . . . . . . . . . . . . . . . . . . . . . . .  5
         (b)    Authorization   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
         (c)    Capitalization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
         (d)    Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
                                                                                         
8.       Covenants of the Buyer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
         (a)    Due Diligence   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
         (b)    Sales Tax   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
         (c)    Employment Offer  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
         (d)    Authorization and Delivery of Shares  . . . . . . . . . . . . . . . . . . . . . . .  6
         (e)    Effective Agreement   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
                                                                                         
9.       Bulk Sales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
                                                                                         
10.      Indemnification by Seller  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
                                                                                         
11.      Indemnification by Buyer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
</TABLE>                                                                      
<PAGE>   54
<TABLE>
<CAPTION>

<S>      <C>                                                                                       <C>
12.      Amendments; Waivers, Etc.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
                                                                                                   
13.      Expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
                                                                                                   
14.      Public Disclosure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
                                                                                                   
15.      Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
                                                                                                   
16.      Notices, Etc.  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
                                                                                                   
17.      Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
                                                                                                   
18.      Applicable Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
                                                                                                   
19.      Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
                                                                                                   
20.      Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
                                                                                                   
21.      Headings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
                                                                                                   
22.      Binding Effect; Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
</TABLE>                                                                      



                                       ii

<PAGE>   55

                               LIST OF SCHEDULES
                               -----------------

1(a)            Purchased Assets
1(b)            Retained Assets
1(c)            Retained Liabilities
6(d)            Agreements





                                      iii

<PAGE>   56

                            ASSET PURCHASE AGREEMENT



         Asset Purchase Agreement dated as of May 9, 1995, by and between
COMPTEK RESEARCH, INC., a New York corporation ("Comptek"), INDUSTRIAL SYSTEMS
SERVICE, INC., a Pennsylvania corporation ("Seller"), and ARIA WIRELESS
SYSTEMS, INC., a Delaware corporation ("Buyer").

                            W I T N E S S E T H :

        WHEREAS, Comptek is the parent corporation and sole shareholder of
Seller; and

        WHEREAS, the Seller desires to sell to the Buyer, and the Buyer desires
to purchase from the Seller, substantially all of the properties and assets,
subject to certain liabilities, of Seller, all upon the terms and conditions
hereinafter set forth;

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

1.      DEFINITIONS.  As used in this Agreement, terms defined in the preamble 
and recitals of this Agreement shall have the meanings set forth therein and 
the following terms shall have the meanings set forth below.

        "Affiliate" shall mean, with respect to any person or entity, any
shareholder, subsidiary, officer, director or partner of such person or entity
or any other person which directly or indirectly controls, is controlled by or
is under common control with such person or entity.

        "Agreement" shall mean this Asset Purchase Agreement and all Schedules
and Exhibits hereto, as the same may from time to time be amended.

        "Assumed Liabilities" shall mean all Liabilities of the Seller except
for the Retained Liabilities described on Schedule 1(c) hereto.

        "Closing" shall mean the closing of the transactions contemplated by
this Agreement on the Closing Date at the offices of Comptek, 2732 Transit Road,
Buffalo, New York 14224, or at such other place as the parties may mutually
agree.

        "Closing Date" shall mean May 9, 1995, or such other date as may be
agreed to by the parties to this Agreement.





                                      -1-
<PAGE>   57


         "Code" shall mean the Internal Revenue Code of 1986 and all
regulations promulgated thereunder, as the same have from time to time been
amended.

         "Comptek" shall mean Comptek Research, Inc., a New York corporation,
the parent and sole owner of Seller.

         "Financial Statements" shall mean (a) the financial statements of
Seller as of and for the period ended March 31, 1995 (including the balance
sheet), prepared by the Seller and previously delivered to the Buyer.

         "Liabilities" shall mean all debts, liabilities, taxes (including any
sales or transfer taxes on the sale of the Purchased Assets), obligations under
contracts, leases, agreements and commitments, and other obligations of every
kind and character of the Seller as the same may exist at the Closing (whether
accrued, absolute, contingent or otherwise, and whether due or to become due)
or which may arise in the future based upon events or a state of facts existing
at the Closing.

          "Purchased Assets" shall mean the assets described in Schedule 1(a)
and all assets reflected on the Financial Statements or acquired by the Seller
in the ordinary course of business and consistent with past practice of the
Seller since the date of such Financial Statements, except for those assets
which have been transferred or disposed of in the ordinary course of business
and consistent with past practice of the Seller after the date of such
Financial Statements or as otherwise permitted by this Agreement): provided,
however, that the Purchased Assets shall not include the Retained Assets.

         "Retained Assets" shall mean the assets described in Schedule 1(b)
hereto.

         "Retained Liabilities" shall mean the Liabilities described in
Schedule 1(c) hereto.

         2.     SALE OF PROPERTIES AND ASSETS.  At the Closing, the Seller will
sell, transfer, assign, convey and deliver to the Buyer, and the Buyer will
purchase, accept and acquire from the Seller, all of the Purchased Assets, "AS
IS, WHERE IS."

         BUYER ACKNOWLEDGES AND AGREES THAT ALL ASSETS BEING TRANSFERRED OR
LICENSED HEREUNDER ARE BEING TRANSFERRED OR LICENSED ON AN "AS IS, WHERE IS"
BASIS, AND THAT EXCEPT AS EXPRESSLY SET FORTH IN SECTION 6, SELLER IS MAKING NO
REPRESENTATION OR WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, RESPECTING THE
ASSETS, AS TO MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR ANY OTHER
MATTER.  BUYER ACKNOWLEDGES THAT BUYER HAS INFORMED ITSELF AS TO SELLER'S
BUSINESS OPERATIONS, AND BUYER FURTHER ACKNOWLEDGES AND AGREES THAT SELLER
MAKES NO REPRESENTATIONS OR WARRANTY OF ANY KIND WITH RESPECT TO THE BUSINESS
OPERATIONS.





                                      -2-

<PAGE>   58

         3.     PURCHASE CONSIDERATION.  The aggregate consideration to be paid
by the Buyer for the Purchased Assets shall consist of (i) Preferred Shares of
Buyer as set forth in Section 3(a) hereof, (ii) the assumption by the Buyer of
the Assumed Liabilities as set forth in Section 3(b) hereof, and (iii) the
other consideration as set forth in this Section 3.

         (a)    Preferred Shares.  The Buyer shall issue to Seller the
following shares of its capital stock:

                Eighteen Thousand Three Hundred Ninety (18,390) shares of
                convertible Preferred Stock ($.01 Par Value), Series CR-II,
                having a face value of $134 per share and a liquidation
                preference of $101.52 per share.

         (b)    Assumed Liabilities.  At the Closing, the Buyer will assume all
Liabilities except the Retained Liabilities, as set forth on Schedule 1(c)
hereto.  The Buyer will not assume or otherwise have any responsibility for any
of the Retained Liabilities.

         (c)    Litigation Support and Assistance.  Comptek and Seller are
currently involved in certain litigation matters related to Seller's business
operations.  As a material element of consideration which is essential to the
consummation of the transaction set forth in this Agreement, Buyer agrees to
provide at no additional cost to Comptek and Seller such personnel,
administrative, logistical, and clerical support, excluding legal fees, as
Comptek and Seller may request from time to time in support of or related to
said litigation.  Requests for such litigation support may be made orally or in
writing.  All requests shall be directed to the attention of Buyer's president.
In the event that Buyer objects that the requested litigation support as
unreasonably burdensome or beyond its abilities to respond, it shall so advise
Comptek's chairman of the board of directors who shall determine whether or not
the request should be modified.  Pending determination by Comptek's chairman of
the board of directors, Buyer shall use its best efforts to comply with all
requests.

         (d)    Sales Tax.  The purchase price is exclusive of any sales, use,
or similar taxes arising directly out of the transfer of the Purchased Assets
to Buyer.  Buyer shall be liable for the payment of such taxes, if any.

         4.     INSTRUMENTS OF TRANSFER; ASSUMPTION OF LIABILITIES; FURTHER
                ASSURANCES.

         (a)    Seller's Deliveries.  Contemporaneously with the completion of
this and other related transactions, the Seller shall deliver to the Buyer:

                (i)      Bills of sale for the Purchased Assets;





                                      -3-

<PAGE>   59


                (ii)     Such other instrument or instruments of transfer, in
                         such form, as shall be reasonably necessary or
                         appropriate to vest in the Buyer good, valid, and
                         marketable title to the Purchased Assets, free and
                         clear of all liens and encumbrances other than the
                         Assumed Liabilities.

         (b)    Buyer's Deliveries.  Contemporaneously with the completion of
this and other related transactions, the Buyer shall deliver to Comptek and
Seller:

                (i)      The stock and related instruments referenced in
                         Section 3(a);

                (ii)     Assumption instruments in a form reasonably
                         satisfactory to the Seller whereby the Buyer agrees to
                         assume the Assumed Liabilities; and

                (iii)    Indemnification/Hold-Harmless Agreement; and

                (iv)     Waiver and Release of any and all existing or 
                         potential claims, known or unknown.

         (c)    OTHER TRANSFER INSTRUMENTS.  Following the Closing, at the
reasonable request of the Buyer, the Seller shall deliver any further
instruments of transfer and take all reasonable action as may be necessary or
appropriate (i) to vest in the Buyer all of the Seller's title to the Purchased
Assets, and (ii) to transfer to the Buyer all of the Seller's rights to
licenses and permits necessary for the operation of the Purchased Assets.

         5.     RECORD RETENTION.  The Buyer shall retain the books and records
of the Seller acquired hereunder and, unless otherwise consented to in writing
by the Seller, the Buyer shall not, for the period of five (5) years following
the Closing, destroy or otherwise dispose of the books and records of the
Seller acquired by the Buyer hereunder.  Thereafter, the Buyer shall not
destroy or otherwise dispose of such books and records without first offering
to surrender to the Seller such books and records or any portion thereof which
the Buyer may intend to destroy or dispose of.  Upon reasonable notice, the
Buyer shall make such books and records available to the Seller, its attorneys,
accountants and representatives for examination and copying.

         6.     REPRESENTATIONS AND WARRANTIES OF THE SELLER.  The Seller
                represents and warrants to the Buyer, as follows:

         (a)    ORGANIZATION; GOOD STANDING; POWER; ETC.  The Seller is a duly
organized, validly existing corporation in good standing under the laws of the
State of Pennsylvania and it has the corporate power, authority and capacity to
own, lease and operate its properties, and to carry on its business as the same
is now being conducted.

         (b)    AUTHORIZATION; EFFECTIVE AGREEMENT.  The Seller has the
requisite corporate power, authority and capacity to enter into this Agreement
and to perform all of their


                                      -4-

<PAGE>   60

obligations hereunder subject only to approval and ratification by its Board of
Directors.  All proceedings required to be taken by Comptek and the Seller to
authorize the execution and delivery of this Agreement and the performance of
their obligations hereunder have been duly taken, and this Agreement
constitutes the legal, valid and binding obligation of Comptek and the Seller,
enforceable against it in accordance with its terms.  The execution, delivery
and performance of this Agreement by the Seller does not and will not: (i)
conflict with, violate or result in the breach of any of the terms or
conditions of, or constitute a default under, the Certificate of Incorporation
or By-Laws of the Seller, or any contract, agreement, commitment, indenture,
mortgage, pledge, note, bond, license, permit or other instrument or obligation
to which either the Seller is party, or by which the Seller or its assets may
be bound or affected, or any law, regulation, ordinance or decree to which the
Seller or its assets are subject, except for requirements for consents of
governmental authorities, persons or entities referred to in Section 6(c)
hereof; or (ii) result in the creation or imposition of any lien, security
interest, charge, encumbrance, restriction or right, including rights of
termination or cancellation, in or with respect to, or otherwise materially
adversely affect, any of the properties, assets or business of the Seller.

         (c)    TITLE TO PROPERTY AND ASSETS.  To Seller's knowledge, Seller
has good and marketable title to all of its properties and assets, subject to
no mortgage, pledge, lien, security interest, lease, charge, encumbrance or
conditional sale or other title retention agreement except as provided for in
the Financial Statements.  No property or asset owned or leased by the Seller
is in violation of any applicable building, zoning or environmental law in
respect thereof.

         (d)    AGREEMENTS, ETC.  To Seller's knowledge, set forth on Schedule
6(d) hereto is a description of all indentures, mortgages, agreements, leases,
contracts, arrangements, commitments, instruments, understandings or
obligations, oral or written, to which the Seller is a party or to which it or
any of the Purchased Assets is subject.

         (e)    COOPERATION.  It shall use its best efforts to obtain all
consents and authorizations of third parties and to make all filings with and
give all notices to third parties which may be necessary or reasonably required
in order to effect the sale contemplated by this Agreement and shall take such
additional actions as the Buyer may reasonably request in writing to cooperate
so that the transactions contemplated by this Agreement may be expeditiously
consummated.

         7.     REPRESENTATIONS AND WARRANTIES OF THE BUYER.  The Buyer
represents and warrants to the Seller as follows:

         (a)    ORGANIZATION; GOOD STANDING; POWER.  The Buyer is a corporation
duly organized, validly existing and in good standing under the laws of the
State of Delaware.  The Buyer has the requisite power, authority and capacity
to own, lease and operate its properties and to carry on its intended business.





                                      -5-

<PAGE>   61

         (b)    AUTHORIZATION.  The Buyer has all requisite power, authority
and capacity to enter into this Agreement and to perform all of its obligations
hereunder subject only to approval and ratification by its Board of Directors.
The Buyer has taken or will have taken prior to the Closing, all necessary
action to approve this Agreement and the performance of its obligations
hereunder.

         (c)    CAPITALIZATION.  Buyer's entire authorized capital stock
consists of (i) Twenty Million (20,000,000) shares of common stock, par value
$.01 per share, of which One Hundred (100) shares were issued and outstanding
as of March 31, 1995, and (ii) Five Hundred Thousand (500,000) shares of
preferred stock, par value $.01 per share, of which none were issued and
outstanding as of March 31, 1995.

         (d)    LITIGATION.  There is no material suit, action or litigation,
administrative hearing, arbitration or other proceeding or governmental inquiry
or investigation affecting the Buyer or its properties pending or, to the best
knowledge of the Buyer, threatened against the Buyer.

         8.     COVENANTS OF THE BUYER.  The Buyer covenants and agrees that,
except as otherwise consented to in writing by the Seller or as permitted by
this Agreement:

         (a)    DUE DILIGENCE WAIVER.  Buyer is fully familiar with the Assets
and Liabilities to be transferred, as well as the business activities of
Seller.  Buyer waives any further requirements relative to a due diligence
investigation and audit with respect to Seller.

         (b)    SALES TAX.  It shall be liable for any sales or other related
taxes which accrue as a result of the transfer of Assets pursuant to this
Agreement.  Buyer shall indemnify Seller for any such sales taxes that it pays
or is required to pay.  Buyer shall have the right to challenge the
appropriateness or the amount of any such tax.

         (c)    EMPLOYMENT OFFER.  It will offer employment to certain of
Seller's employees, and obtain acceptance of such offers from a sufficient
number of Seller's employees, contingent upon the Closing, such that Seller
will be required to terminate a number of employees which does not trigger the
sixty (60) day notice requirements of the federal WARN statute.

         (d)    AUTHORIZATION AND DELIVERY OF SHARES.  All shares of Buyer's
common and preferred stock required to be issued hereunder will be duly
authorized and validly issued, fully paid and nonassessable, free and clear of
all liens, pledges, encumbrances, claims, equities and conditions enforceable
by third parties.

         (e)    EFFECTIVE AGREEMENT.  The execution, delivery and performance
of this Agreement by the Buyer and the consummation of the transactions
contemplated hereby do not and will not (i) conflict with, violate or result in
the breach of any of the terms or conditions of, or constitute a default under,
the Certificate of Incorporation or the By-Laws





                                      -6-

<PAGE>   62

of the Buyer, or any contract, agreement, commitment, indenture, mortgage,
pledge, note, bond, license, permit or other instrument or obligation to which
the Buyer is a party or by which the Buyer or its assets may be bound or
affected, or any law, regulation, ordinance or decree to which the Buyer or its
assets are subject; or (ii) result in the creation or imposition of any lien,
security interest, charge, encumbrance, restriction or right, including rights
of termination or cancellation, in or with respect to, or otherwise materially
adversely affect, any of the properties, assets or business of the Buyer (other
than liens, security interests, charges, encumbrances, restrictions or rights
arising in connection with the financing of the transactions contemplated
hereby).

         9.     BULK SALES.  Buyer waives compliance by Seller with the bulk
sales law of the State of New York and any state or jurisdiction in which
Seller (i) was doing business, (ii) had property located, or (iii) had existing
creditors on the Closing Date.

         10.    INDEMNIFICATION BY SELLER.

         (a)    Seller shall defend, indemnify and hold harmless Buyer, Buyer's
directors, officers, employees and agents and all persons acting on their
behalf from and reimburse the aforesaid parties for any and all Buyer's Damages
(as defined in Section 10(b)) in the manner and to the extent set forth in this
Section 10.

         (b)    The term "Buyer's Damages" shall include all losses, costs,
expenses (including reasonable attorneys' fees and experts' fees and expenses
and other costs and expenses incident to any suit, action, investigation, claim
or proceeding), fees, liabilities and damages sustained by the party entitled
to indemnity prior to any reimbursement therefor:

                (i)      arising from any breach of a representation or
warranty of Seller contained in or made pursuant to this Agreement;

                (ii)     resulting from a default in the performance of any of
the covenants or obligations that Seller is required to perform under this
Agreement; or

                (iii)    arising as the direct result of a final judgment
obtained by a third party pursuant to Seller's manufacture of products for
other than Comptek Telecommunications, Inc., or its customers which occurred
prior to the effective date of this Agreement;

provided, however, that Seller shall not be required to pay any of Buyer's
Damages unless the claim for such Buyer's Damages is made by Buyer and received
by Seller prior to the second anniversary of the execution of this Agreement.
Notwithstanding the foregoing provisions hereof to the contrary, it is
understood and agreed that the amount of Buyer's Damages payable by Seller to
Buyer hereunder shall in no event exceed the Purchase Price.


                                      -7-



<PAGE>   63


         11.    INDEMNIFICATION BY BUYER.

         (a)    From and after the Closing Date, Buyer shall indemnify and hold
harmless Seller, its Affiliates (as defined in Section 1) and their directors,
officers, employees and agents and all persons acting on their behalf from and
reimburse the aforesaid parties for any and all Seller's Damages (as defined in
Section 11(b)) in the manner and to the extent set forth in this Section 11.

         (b)    The term "Seller's Damages" shall include all losses, costs,
expenses (including reasonable attorneys' and experts' fees and expenses and
other costs and expenses incident to any suit, action, investigation, claim or
proceeding), fees, liabilities and damages sustained by the party entitled to
indemnity prior to any reimbursement therefor:

                (i)      arising from any breach of a representation or
warranty of Buyer contained in or made pursuant to this Agreement;

                (ii)     resulting from a default in the performance of any of
the covenants or obligations that Buyer is required to perform under this
Agreement;

                (iii)    resulting from or arising in connection with any
liability assumed by Buyer as contemplated by this Agreement;

                (iv)     resulting from or arising in connection with Buyer's
management, control, ownership or operation of the Assets or business; or

                (v)      resulting from any claim which alleges that activities
of Buyer or any licensees of Buyer infringe or violate a third party's
intellectual property rights.

         12.    AMENDMENTS; WAIVERS, ETC.  This Agreement may be amended,
modified and supplemented by written agreement approved by the Seller and the
Buyer at any time prior to the Closing Date with respect to any of the terms
contained herein.  Prior to or on the Closing Date, the parties hereto may in
writing (i) extend the time for the performance of any of the obligations or
other acts of the parties hereto, (ii) waive any inaccuracies in the
representations and warranties contained herein or in any document delivered
hereunder, and (iii) waive compliance with any of the agreements or conditions
contained herein.

         13.    EXPENSES.  Each of the parties will be responsible for payment
of its own expenses (including legal fees) incurred in connection with the
transactions contemplated by this Agreement, regardless of whether or not such
transactions are consummated.



                                      -8-

<PAGE>   64


         14.    PUBLIC DISCLOSURE.  Neither the Buyer nor the Seller shall make
any public release of information regarding the matters contemplated herein
except (i) that a press release in a mutually agreed form shall be issued by
the Seller as promptly as is practicable after the execution of this Agreement,
(ii) that the Buyer and the Seller may each continue such communications with
employees, customers, suppliers, lenders, lessors, shareholders, and other
particular groups as may be legally required or necessary or appropriate and
not inconsistent with the best interest of the other party or the prompt
consummation of the transactions contemplated by this Agreement, and (iii) as
required by law.

         15.    CONFIDENTIALITY.  The Buyer agrees to treat all information
concerning the Seller furnished, or to be furnished, by or on behalf of the
Seller in accordance with the provisions of this Section 15 (collectively, the
"Information"), and to take, or abstain from taking, other actions set forth
herein.  The Information will be used solely for the purpose of evaluating the
transaction contemplated hereby, and will be kept confidential by the Buyer and
its officers, directors, employees, representatives, agents, and advisors;
provided that (i) any of such Information may be disclosed to the Buyers'
officers, directors, employees, representatives, agents, and advisors who need
to know such information for the purpose of evaluating the transaction, (ii)
any disclosure of such information may be made to which the Seller consents in
writing and (iii) such information may be disclosed if so required by law.  If
the transaction is not consummated, the Buyer will return to the Seller all
material containing or reflecting the information and will not retain any
copies, extracts, or other reproductions thereof.  The provisions of this
Section 15 shall survive the termination of this Agreement.

         16.    NOTICES, ETC.  All notices, consents, demands, requests,
approvals and other communications which are required or may be given hereunder
shall be in writing and shall be deemed to have been duly given if delivered by
hand or mailed certified first class mail, postage prepaid:

         (a)    If to the Buyer:

                ARIA Wireless Systems, Inc.
                140 Mid County Drive
                Orchard Park, New York  14127

                Attention:        Frank J. Perpiglia
                                  President and CEO





                                      -9-
<PAGE>   65


         (b)    If to the Seller:

                Industrial Systems Service, Inc.
                2732 Transit Road
                Buffalo, New York  14224

                Attention:        John R. Cummings
                                  Chairman

or to such other person or persons at such address or addresses as may be
designated by written notice hereunder.

         17.    ASSIGNMENT.  Except as set forth in this Agreement, neither the
Seller nor the Buyer may assign or convey this Agreement or any of their
respective rights or obligations hereunder to any other party; provided,
however, that Seller may assign its rights hereunder to Comptek or its
Affiliates.

         18.    APPLICABLE LAW.  This Agreement shall be governed by and
construed and interpreted in accordance with the laws or the State of New York.

         19.    ENTIRE AGREEMENT.  This Agreement and all Exhibits and
Schedules hereto embody the entire agreement and understanding of the parties
hereto and supersede any prior agreement or understanding between the parties.

         20.    COUNTERPARTS.  This Agreement may be executed in several
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same document.

         21.    HEADINGS.  Headings of the Sections in this Agreement are for
reference purposes only and shall not be deemed to have any substantive effect.

         22.    BINDING EFFECT; BENEFITS.  This Agreement shall inure to the
benefit of and be binding upon the parties hereto and their respective
successors and assigns; provided, however, that nothing in this Agreement,
expressed or implied, is intended to confer on any person other than the
parties hereto or their respective successors and assigns, any rights and
remedies, obligations or liabilities under or by reason of this Agreement.





                                     -10-

<PAGE>   66


         IN WITNESS WHEREOF, each of the parties hereto has executed this
Agreement as of the date first above written.



INDUSTRIAL SYSTEMS SERVICE, INC.                COMPTEK RESEARCH, INC.


By:                                             By:
   ----------------------------                    ---------------------------
   John R. Cummings                                John R. Cummings
   Chairman                                        Chairman, President and CEO



ARIA WIRELESS SYSTEMS, INC.


By: 
   ----------------------------
    Frank J. Perpiglia
    Chairman, President and CEO





                                     -11-

<PAGE>   67

<TABLE>
                                 SCHEDULE 1(a)


                        INDUSTRIAL SYSTEMS SERVICE, INC.
                                PURCHASED ASSETS
                              AS OF MARCH 31, 1995




<CAPTION>
                                                                                               (IN $000'S)
                                                                                             --------------
<S>                                                                      <C>                     <C>
ACCOUNTS RECEIVABLE                                                                                 $52

INVENTORY                                                                                        $1,360

FIXED ASSETS (NET BOOK VALUE):

         Furniture & Fixtures                                              $6

         Machinery & Equipment                                           $544

         Leasehold Improvements                                            $0

                         Total                                                                     $550

OTHER ASSETS

         Other                                                                                       $6
                                                                                             --------------

TOTAL PURCHASED ASSETS                                                                           $1,968
                                                                                             ==============
</TABLE>



<PAGE>   68

                                 SCHEDULE 1(b)

                        INDUSTRIAL SYSTEMS SERVICE, INC.
                                RETAINED ASSETS




Seller shall retain the following assets:

1.       Any and all proceeds, awards, compensation, or other recovered damages
         arising from or related to the litigation involving Seller, its parent
         and affiliates against Poly Circuits, Inc./M~Wave, Inc.

2.       All rights and proceeds, except for the rights to the Symix System,
         arising from or related to the Erie, Pennsylvania, operations of
         Seller sold to Elgin E2, Inc., pursuant to a certain Asset Purchase
         Agreement dated August 11, 1994, including, without limitation:

         (a)    Security Agreement dated October 19, 1994, and related
                promissory note, by and between Elgin E2, Inc., and Seller.

         (b)    Security Agreement dated October 19, 1994, and related
                promissory note, by and among Key International, Inc., Elgin
                E2, Inc., and Seller.

         (c)    Sublease Agreement dated October 19, 1994, by and between Elgin
                E2, Inc., and Seller.

3.       Any and all accounts receivable, credits, claims and debts owed to the
         Seller but removed by Seller from its balance sheet prior to March 31,
         1995.





<PAGE>   69

                                 SCHEDULE 1(c)

                        INDUSTRIAL SYSTEMS SERVICE, INC.
                              RETAINED LIABILITIES



Seller shall retain the following liabilities:

1.       Any and all liabilities, costs, and expenses arising from or related
         to the litigation involving Seller, its parent and affiliate against
         Poly Circuits/M~Wave, Inc.

2.       All liabilities and responsibilities, except for responsibilities for
         the Symix Systems, arising from or related to the Erie, Pennsylvania,
         operations of Seller sold to Elgin 2, Inc., pursuant to a certain
         Asset Purchase Agreement dated August 11, 1994, including, without
         limitation:

         (a)    Sublease Agreement dated October 19, 1994, by and between Elgin
                E2, Inc., and Seller.

         (b)    Subordination Agreement, dated October 19, 1994, by and among
                Star Bank, Seller, Comptek Research, Inc., and Elgin E2, Inc.

         (c)    Bill of Sale dated October 19, 1994, issued by Seller to Elgin
                E2, Inc.

3.       Accounts Payable ($156,000 as of March 31, 1995).

4.       Other Accrued Liabilities ($95,000 as of March 31, 1995).





<PAGE>   70

                                 SCHEDULE 6(d)

                        INDUSTRIAL SYSTEMS SERVICE, INC.
                                   AGREEMENTS


The following agreements and all rights and responsibilities thereunder are
specifically assumed:

1.       Software License and related agreements by and between Seller and
         Symix, Inc., dated January 20, 1993 (Agreement No. 93-0100227-01), as
         assigned to Seller's parent corporation, Comptek Research, Inc., by
         instrument dated February 14, 1994.

2.       Symix System Use Agreement dated October 19, 1994, by and between
         Comptek Research, Inc., and Elgin E2, Inc.

3.       Contract Manufacturing Orders, as follows:

<TABLE>
<CAPTION>
                                                                                              DELIVERY TIME
                                 CUSTOMER             P.O. #             DESCRIPTION              FRAME            $ VALUE
                           <S>                       <C>           <C>                         <C>                 <C>
                           Carleton Technology        L30278            CCA Shipsets           3/95 - 7/95          $81,697.00

                           Carleton Technology        L50050       50 Servo Amp Assemblies         9/95             $17,500.00
                           Carleton Technology        L5B031        Solderability Testing          TBD               $1,800.00

                                 Cattron              80159                 CCA's              5/95 - 12/95         $74,857.79

                                   CFS                43340                 CCA's              3/95 - 5/95             $935.80

                                   CFS                43358             Test Fixture               4/95                $660.00
                            Control Techniques        40689        180 CCA's (1590 Series)         5/95             $35,890.00

                                   EPS               140358A                1 CCA                  TBD                 $160.00

                                   EPS                150116              14 CCA's                 5/95              $1,432.00

                                   OIS                06473              Flex CCA's            4/95 - 5/95          $12,884.55
                            Purchasing Network        P95263       1850 CCA's (9500-4025)      3/95 - 7/95          $39,510.50

                            Purchasing Network        P95262       1850 CCA's (9500-4030)      3/95 - 7/95          $10,820.50

                                   SKC               021973-0            1000 CCA's                5/95             $18,600.00
                                                                                                                  ------------
                                                                                                  TOTAL            $296,748.14
</TABLE>


<PAGE>   71


                      PLAN AND AGREEMENT OF MERGER BETWEEN

                          ARIA WIRELESS SYSTEMS, INC.,
                             A NEW YORK CORPORATION

                                      AND

                          ARIA WIRELESS SYSTEMS, INC.,
                             A DELAWARE CORPORATION

<PAGE>   72
                      PLAN AND AGREEMENT OF MERGER BETWEEN


                          ARIA WIRELESS SYSTEMS, INC.,
                             A NEW YORK CORPORATION

                                      AND

                          ARIA WIRELESS SYSTEMS, INC.,
                             A DELAWARE CORPORATION



         AGREEMENT OF MERGER made this 9th day of May, 1995, between:

         ARIA WIRELESS SYSTEMS, INC., a New York Corporation, hereinafter 
         called "Old Aria", and

         ARIA WIRELESS SYSTEMS, INC., a Delaware Corporation, hereinafter
         called "New Aria".


                            W I T N E S S E T H :

                WHEREAS, Old Aria has authorized capital stock consisting of
One Million Five Hundred Thousand (1,500,000) Shares of Common Stock, (par
value $.01 per share), of which One Hundred Thousand (100,000) Shares have been
duly issued, and of which Eighty-Nine Thousand Seven Hundred Seventy-Eight
(89,778) Shares are now outstanding and Ten Thousand Two Hundred Twenty-Two
(10,222) Shares are held by Old Aria as Treasury Stock, and also consisting of
Five Hundred Thousand (500,000) Shares of Preferred Stock (par value $.01 per
share), none of which have been issued; and

                WHEREAS, New Aria has authorized capital stock consisting of
Nineteen Million Nine Hundred Thousand (19,900,000) Shares of Class B Common
Stock, par value $.01 per share, none of which has been issued, Ten Thousand
(10,000) Shares of Class A Common Stock, of which One Hundred (100) Shares have
been duly issued and are now outstanding, and Five Hundred Thousand (500,000)
Shares of Preferred Stock ($.01 par value per share), of which 1,853  shares
have been designated as Non-Convertible Preferred Stock, Series CR-I, all of
which have been issued, and 48,951 Shares have been designated as Convertible
Preferred Stock, Series, CR-II, all of which have been issued, 1,000 Shares
have been designates as Non-Convertible Preferred Stock, Series BC-1, none of
which has been issued, and the remaining 448,196 authorized Shares of Preferred
Stock have not been designated or issued; and

                WHEREAS, the Board of Directors of Old Aria and of New Aria,
respectively, deem it advisable and generally to the advantage and welfare of
the two corporate parties and their respective shareholders that Old Aria merge
with New Aria under and pursuant to the provisions

<PAGE>   73


of the New York Business Corporation Law and the General Corporation Law of the
State of Delaware.

                NOW, THEREFORE, in consideration of the premises and of the
mutual covenants herein contained, and the mutual benefits hereby provided, it
is agreed by and between the parties hereto as follows:

         1.     Merger.

         Old Aria shall be and hereby is merged into New Aria.

         2.     Effective Date.

         This Agreement of Merger shall become effective immediately upon
         compliance with the laws of the States of New York and Delaware, the
         time of such effectiveness being hereinafter called the Effective
         Date.

         3.     Surviving Corporation.

         New Aria shall survive the merger herein contemplated and provided for
         and shall continue to be governed by the laws of the State of
         Delaware, but the separate corporate existence of Old Aria shall cease
         forthwith upon the Effective Date.

         4.     Authorized Capital.

         The authorized Capital Stock of New Aria following the effective date
         shall be:

         a.     Twenty Million (20,000,000) Shares of Common Stock (par value
                $.01 per share), of which Ten Thousand (10,000) Shares shall be
                Class A Common Stock and Nineteen Million Nine Hundred Thousand
                (19,900,000) Shares shall be Class B Common Stock, unless or
                until the same shall be changed in accordance with the laws of
                the State of Delaware.

         b.     Five Hundred Thousand (500,000) Shares of Preferred Stock (par
                value $.01 per share) of which One Thousand Eight Hundred
                Fifty- Three (1,853) Shares shall be designated as
                Non-Convertible Preferred Stock, Series CR-I, of which
                Forty-Eight Thousand Nine Hundred Fifty-One (48,951) Shares
                shall be designated as Convertible Preferred Stock, Series
                CR-II, and One Thousand (1,000) Shares of Preferred Stock shall
                be designated as Non-Convertible Preferred Stock Series
                BC-I, unless and until the same shall be changed in accordance
                with the laws of the State of Delaware.





                                       2

<PAGE>   74



         5.       Certificate Of Incorporation.

         The Restated Certificate of Incorporation in the form set forth as
         Appendix "A" hereto, which shall be filed with the Secretary of State
         of Delaware prior to the filing of the Certificate of Merger pursuant
         hereto, shall be the Certificate of Incorporation of Old Aria
         following the effective date unless and until the same shall be
         amended or repealed in accordance with the provisions thereof, which
         power to amend or repeal is hereby expressly reserved, and all rights
         or powers of whatsoever nature conferred in such Certificate of
         Incorporation or herein upon any shareholder or Director or Officer of
         New Aria or upon any other persons whomsoever are subject to the
         reserve power.  Such Certificate of Incorporation, shall constitute
         the Certificate of Incorporation of New Aria separate and apart from
         this Agreement of Merger and may be separately certified as the
         Certificate of Incorporation of New Aria.

         6.     By-Laws.

         The By-Laws of New Aria as they exist on the effective date shall be
         the By-Laws of New Aria following the Effective Date unless and until
         the same shall be amended or repealed in accordance with the
         provisions thereof.

         7.     Board Of Directors and Officers.

         The members of the Board of Directors and the Officers of New Aria,
         immediately after the effective time of the merger, shall be those
         persons who were members of the Board of Directors and the Officers,
         respectively, of New Aria immediately prior to the Effective Date, and
         such persons shall serve in such offices, respectively, for the terms
         provided by law or in the By-Laws, or until their respective
         successors are elected and qualified.

         8.     Further Assurance of Title.

         If at any time New Aria shall consider or be advised that any
         acknowledgements  or assurances in law or other similar actions are
         necessary or desirable in order to acknowledge or confirm in and to
         New Aria any right, title or interest of Old Aria held immediately
         prior to the Effective Date, Old Aria and its proper Officers and
         Directors, shall and will execute and deliver all such
          acknowledgements  or assurances in law and do all things necessary or
         proper to acknowledge or confirm such right, title or interest in New
         Aria, as shall be necessary to carry out the purposes of this
         Agreement of Merger, and New Aria and the proper Officer and Directors
         thereof are fully authorized to take any and all such action in the
         name of Old Aria or otherwise.





                                       3

<PAGE>   75

         9.       Conversion of Outstanding Stock.

         Forthwith upon the Effective Date:

         (a)    The Thirty-One Thousand (31,000) Shares of the Common Stock of
                Old Aria presently held by New Aria, received from Comptek
                Telecommunications, Inc. in connection with the consummation of
                a certain Asset Acquisition Agreement, shall be retired and no
                shares of Common Stock of New Aria or other securities of New
                Aria shall be issued in respect thereof.

         (b)    The Twenty-Three Thousand (23,000) Shares of Common Stock of
                Old Aria currently held by Rand Capital Corporation shall be
                converted into 1,800 Shares of Class A Common Stock of New Aria
                and 1,798,200 Shares of Class B Common Stock of New Aria, which
                shall be fully paid and non-assessable, and each certificate
                nominally representing shares of Class A and Class B Common
                Stock of Old Aria shall for all purposes be deemed to be
                evidence of the ownership of the indicated number of shares of
                Class A and Class B Common Stock of New Aria.

         (c)    The Twenty-Three Thousand (23,000) Shares of Common Stock of
                Old Aria presently held by Bydatel Corporation shall be
                converted into 1,800 Shares of Class A Common Stock of New Aria
                and 1,798,200 Shares of Class B Common Stock of New Aria, which
                shall be fully paid and non-assessable and each certificate
                nominally representing shares of Class A and Class B Common
                Stock of Old Aria shall for all purposes be deemed to evidence
                the ownership of the indicated number of shares of Class A and
                Class B Common Stock in New Aria.

         (d)    Twelve Thousand Seven Hundred Seventy-Eight (12,778) Shares of
                Common Stock of Old Aria presently held by Frank J. Perpiglia
                shall be converted into 1,500 shares of Class A Common Stock of
                New Aria and 998,500 Shares of Class B Common Stock of New
                Aria, which shall be fully-paid and non-assessable and each
                certificate nominally representing shares of Class A and Class
                B Common Stock of Old Aria shall for all purposes be deemed to
                evidence the ownership of the indicated number of shares of
                Class A and Class B Common Stock of New Aria.

         The holders of such certificates shall not be required immediately to
         surrender the same in exchange for certificates of Class A and Class B
         Common Stock in New Aria but, as certificates nominally representing
         shares of Common Stock of Old Aria are surrendered for transfer, New
         Aria will cause to be issued certificates representing shares of Class
         A and Class B Common Stock of New Aria, and at any time upon surrender
         by any holder of certificates nominally representing shares of Common
         Stock of Old Aria, New Aria will cause to be issued therefore,
         certificates for an appropriate number of shares of Class A and Class
         B Common Stock of Old Aria.





                                       4

<PAGE>   76



         10.    Rights and Liabilities of New Aria.

         At and after the Effective Date, New Aria shall succeed to and
         possess, without further act or deed, all of the estate, rights,
         privileges, powers and franchises, both public and private, and all of
         the property, real, personal, and mixed, of each of the parties
         hereto; all debts due to Old Aria of whatever account shall be vested
         in New Aria; all claims, demands, property, rights, privileges, powers
         and franchises, and every other interest of either of the parties
         hereto, shall be as effectively the property of New Aria as they were
         of the respective parties hereto; the title to any real estate vested
         by deed or otherwise in Old Aria shall not revert or be in any way
         impaired by reason of the merger, but shall be vested in New Aria; all
         rights of creditors and all liens upon any property of either of the
         parties shall be preserved unimpaired, limited in lien to the property
         effected by such lien at the effective time of the merger; all debts,
         liabilities and duties of the respective parties hereto, shall
         henceforth attach to New Aria and may be enforced against it to the
         same extent as if such debts, liabilities, and duties had been
         incurred or contracted by it; and New Aria shall indemnify and hold
         harmless the Officers and Directors of each of the parties hereto
         against all such debts, liabilities and duties and against all claims
         and demands arising out of the merger.

         11.    Book Entries.

         The merger contemplated hereby shall be treated as a pooling of
         interests and as of the Effective Date, entries shall be made upon the
         books of New Aria in accordance with Generally Accepted Accounting
         Principles reflecting such treatment.

         12.    Service of Process on New Aria.

         New Aria agrees that it may be served with process in the State of New
         York in any proceeding for enforcement of any obligation of Old Aria
         as well as for the enforcement of any obligation of New Aria arising
         from the merger, including any suit or other proceeding to enforce the
         right of any shareholder as determined in appraisal proceedings
         pursuant to the provisions of Section 910 of the Business Corporation
         Law of the State of New York.

         13.    Termination.

         This Agreement of Merger may be terminated and abandoned by action of
         the Board of Directors of either Old Aria or New Aria at any time
         prior to the effective date, whether before or after approval by the
         shareholders of the two corporate parties hereto.





                                       5

<PAGE>   77




         14.    Plan of Reorganization.

         This Agreement of Merger constitutes a Plan of Reorganization to be
         carried out in the manner, on the terms, and subject to the conditions
         set forth herein, and pursuant to a certain Reorganization Agreement
         dated as of March 10, 1995, as Reinstated and Amended by Agreement
         dated May 9, 1995, by and among Old Aria, New Aria, and the
         shareholders of each.

         15.    Expenses.

         New Aria shall pay all expenses of carrying this Agreement of Merger
into effect and of accomplishing the merger.

                IN WITNESS WHEREOF, each of the corporate parties hereto,
pursuant to authority duly granted by their respective Boards of Directors,
have caused this Agreement of Merger to be executed by their respective
Presidents and attested by their respective Secretaries, and their respective
corporate seals to be hereunto affixed.


                             ARIA WIRELESS SYSTEMS, INC.,
                             a New York Corporation


                             By:_____________________________________

Attest:
__________________________



                             ARIA WIRELESS SYSTEMS, INC.,
                             a Delaware Corporation


                             By:_____________________________________
Attest:
__________________________





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<PAGE>   78




                                 CERTIFICATE OF
                  THE SECRETARY OF ARIA WIRELESS SYSTEMS, INC.
                            (A Delaware Corporation)



                I, Christopher A. Head, the Secretary of Aria Wireless Systems,
Inc., hereby certify that the Agreement of Merger to which this Certificate is
attached, after having been first duly signed on behalf of the corporation by
the President and Secretary under the corporate seal of said corporation, was
duly approved and adopted by written consent in lieu of a meeting dated May 9,
1995, pursuant to Section 228  of the Delaware General Corporation Law by the
holders of all the outstanding stock entitled to vote thereon.

                Witness my hand and seal of said Aria Wireless Systems, Inc.
this 9th day of May, 1995.



                                        ________________________________________
                                        Secretary


Seal





                                 CERTIFICATE OF
                  THE SECRETARY OF ARIA WIRELESS SYSTEMS, INC.
                            (A New York Corporation)



                I, Christopher A. Head, the Secretary of Aria Wireless Systems,
Inc., hereby certify that the Agreement of Merger to which this Certificate is
attached, after having been first duly signed on behalf of the corporation by
the President and Secretary under the corporate seal of said corporation, was
duly approved and adopted by written consent in lieu of a meeting dated May 9,
1995, pursuant to Section 615  of the New York Business Corporation Law by the
holders of all the outstanding stock entitled to vote thereon.

                Witness my hand and seal of said Aria Wireless Systems, Inc.
this 9th day of May, 1995.


                                        ________________________________________
                                        Secretary

Seal





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