ESSEX CORPORATION
8-K, EX-99, 2000-09-20
ENGINEERING SERVICES
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                                ESSEX CORPORATION


                                  Exhibit 99(a)


                          SECURITIES PURCHASE AGREEMENT

<PAGE>

                          SECURITIES PURCHASE AGREEMENT


         SECURITIES PURCHASE AGREEMENT (the "Agreement"),  dated as of September
7,  2000,  by  and  among  Essex  Corporation,  a  Virginia  corporation,   with
headquarters  located  at 9150  Guilford  Road,  Columbia,  Maryland  21046 (the
"Company"),  and the investors  listed on the Schedule of Buyers attached hereto
(individually, a "Buyer" and collectively, the "Buyers").

         WHEREAS:

         A. The  Company  and the  Buyers  are  executing  and  delivering  this
Agreement in reliance upon the exemption from securities  registration  afforded
by Rule 506 of Regulation D ("Regulation D") as promulgated by the United States
Securities and Exchange Commission (the "SEC") under the Securities Act of 1933,
as amended (the "1933 Act").

         B. The Company has  authorized the following new class of its Preferred
Stock ("Preferred  Stock"):  the Company's Series B Convertible  Preferred Stock
(the  "Series B  Preferred"),  which  shall be  convertible  into  shares of the
Company's  Common Stock,  (the "Common  Stock") (as converted,  the  "Conversion
Shares"),  in accordance with the terms of the Company's  Articles of Amendment,
in the form attached hereto as Exhibit A (the "Articles of Amendment").

         C. The Buyers wish to purchase, upon the terms and conditions stated in
this  Agreement,  an  aggregate  of 500,000  shares of Series B  Preferred  (the
"Shares") in the respective  amounts set forth opposite each Buyer's name on the
Schedule of Buyers.

         D. The Buyers wish to purchase,  on the terms and conditions  stated in
this  Agreement,  Warrants to purchase an aggregate  of 2,000,000  shares of the
Common Stock (the shares of Common Stock  issuable upon exercise of the Warrants
are referred to herein as the "Warrant Shares"), in accordance with the terms of
the form of  Warrant  attached  hereto  as  Exhibit  B (the  "Warrants")  in the
respective amounts set forth each Buyer's name on the Schedule of Buyers.

         E. Contemporaneously with the execution and delivery of this Agreement,
the parties hereto are executing and delivering a Registration  Rights Agreement
in the form attached hereto as Exhibit C (the  "Registration  Rights Agreement")
pursuant to which the Company has agreed to provide certain  registration rights
under the 1933 Act and the rules and  regulations  promulgated  thereunder,  and
applicable state securities laws.

<PAGE>

         NOW THEREFORE, the Company and the Buyers hereby agree as follows:

         1.       PURCHASE AND SALE OF SHARES; ISSUANCE OF WARRANTS.
                  -------------------------------------------------

                  (a) Purchase of Shares;  Issuance of Warrants.  At the Initial
Closing or a Subsequent  Closing,  as defined below, the Company shall issue and
sell to each Buyer and each Buyer severally  agrees to purchase from the Company
the  respective  number of Shares set forth  opposite  such  Buyer's name on the
Schedule of Buyers at such  Closing at a price of $4.00 per Share.  In addition,
the Company shall issue and sell to each Buyer at the Initial  Closing a Warrant
to purchase the number of shares of Common Stock set forth opposite such Buyer's
name on the Schedule of Buyers.

                  (b)  The  Initial   Closing.   The  initial   closing  of  the
transaction  contemplated hereby (the "Initial Closing") shall take place at the
offices of the Company,  9150 Guilford  Road,  Columbia,  Maryland 21046 at 9:00
a.m. on September 15, 2000 or such later date on which the conditions  specified
in Section 7 below have been satisfied or waived by the Buyers,  but in no event
later than October 15, 2000.  At the Initial  Closing,  (A) each Buyer shall pay
the  purchase  price to the Company for the Shares to be issued and sold to such
Buyer by check or wire  transfer,  and (B) the  Company  shall  deliver  to each
Buyer,   (1)  a  stock   certificate   (collectively,   the   "Preferred   Stock
Certificates")  representing  the number of the Shares  which such Buyer is then
purchasing  hereunder and (2) a Warrant for the number of shares of Common Stock
covered by  Warrants  indicated  with  respect to such Buyer on the  Schedule of
Buyers,  duly  executed on behalf of the Company and  registered  in the name of
such Buyer or its  designee.  If at the Initial  Closing  any of the  conditions
specified in Section 7 below have not been  fulfilled,  each of the Buyers shall
at its  election,  be relieved of all of its  obligations  under this  Agreement
without  thereby  waiving any other rights it may have by reason of such failure
or such non-fulfillment.

                  (c)   Subsequent   Closings.   Subsequent   closings   of  the
transaction  contemplated  hereby (the  "Subsequent  Closings") shall be held as
shown on the  Schedule of Buyers.  At each  Subsequent  Closing,  (A) each Buyer
shall pay the purchase price to the Company for the Shares to be issued and sold
at such Subsequent Closing to such Buyer by check or wire transfer,  and (B) the
Company shall deliver to each Buyer, a Preferred Stock Certificate  representing
the number of the Shares which such Buyer is then purchasing hereunder. If, at a
Subsequent  Closing,  a Buyer fails to purchase  the full number of Shares to be
purchased  by it at  such  Subsequent  Closing,  and  if  such  Buyer  does  not
thereafter  purchase  such  Shares  within 10 days after its  receipt of written
notice of such  failure,  such Buyer  shall no longer have the right to purchase
Shares at Subsequent Closings.

                  (d)  Acceleration.  If  elected  by  the  Company's  Board  of
Directors,  including all of the directors  appointed by the Buyers, the Company
may  accelerate  the  obligation  of the Buyers to purchase  the Shares they are
required to purchase at Subsequent  Closings.  In such event,  the Company shall
give at least 10 days written  notice to the Buyers of the date,  time and place
of the accelerated  closing,  including the number of Shares to be purchased and
the aggregate  purchase price  therefor.  At the accelerated  closing,  (A) each
Buyer  shall pay the  purchase  price to the Company for the Shares to be issued
and sold at such  closing to such Buyer by check or wire  transfer,  and (B) the
Company shall deliver to each Buyer, a Preferred Stock Certificate  representing
the number of the Shares which such Buyer is then purchasing hereunder.

                                       2
<PAGE>


                  2.       BUYERS' REPRESENTATIONS AND WARRANTIES.
                           --------------------------------------

                  Each Buyer represents and warrants with respect only to itself
that:

                  (a) Investment Purpose. Such Buyer (i) is acquiring the Shares
and Warrants being  purchased by it, (ii) upon  conversion of such Shares,  will
acquire the  Conversion  Shares then  issuable  and (iii) upon  exercise of such
Warrants,  will  acquire  the Warrant  Shares then  issuable  (the  Shares,  the
Conversion Shares and the Warrant Shares  collectively are referred to herein as
the  "Securities"),  for its own account for investment only and not with a view
towards,  or for resale in  connection  with,  the public  sale or  distribution
thereof,  except  pursuant to sales  registered or exempted  under the 1933 Act;
provided,  however,  that by making the representations  herein, such Buyer does
not agree to hold any of the  Securities  for any minimum or other specific term
and  reserves  the right to  dispose  of the  Securities  at any time,  provided
further,  however, that such disposition shall be in accordance with or pursuant
to a registration statement or an exemption under the 1933 Act.

                  (b) Accredited Investor Status.  Such Buyer is an  "accredited
investor" as that term is defined  in Rule  501(a)(3) of  Regulation D under the
1933 Act.

                  (c) Reliance on Exemptions.  Such Buyer  understands  that the
Securities  are being offered and sold to it in reliance on specific  exemptions
from the  registration  requirements  of the  United  States  federal  and state
securities  laws and that the  Company  is  relying  in part  upon the truth and
accuracy of, and such Buyer's compliance with, the representations,  warranties,
agreements, acknowledgments and understandings of such Buyer set forth herein in
order to determine the  availability  of such  exemptions and the eligibility of
such Buyer to acquire the Securities.

                  (d)  Information.  Such Buyer and its  advisors,  if any, have
been  furnished  with all  materials  relating  to the  business,  finances  and
operations  of the Company and  materials  relating to the offer and sale of the
Securities which have been requested by such Buyer. Such Buyer and its advisors,
if any,  have been  afforded the  opportunity  to ask  questions of the Company.
Neither such inquiries nor any other due diligence  investigations  conducted by
such Buyer or its advisors,  if any, or its representatives  shall modify, amend
or  affect  such  Buyer's  right to rely on the  Company's  representations  and
warranties contained in Sections 3 and 9(l) below.

                  (e) Residency.  Such Buyer is  purchasing the  Securities from
its  office  specified  in its  address on the Schedule of Buyers.

                                       3
<PAGE>

         3.       REPRESENTATIONS AND WARRANTIES OF THE COMPANY.
                  ---------------------------------------------

                  The  Company  represents  and  warrants  to each of the Buyers
that:

                  (a)  Organization  and  Qualification.  The  Company  and  its
"Subsidiaries"  (which for purposes of this Agreement  means any entity in which
the Company,  directly or  indirectly,  owns capital stock or holds an equity or
similar interest which ownership entitles the Company to elect a majority of the
board of directors or similar  governing  body of such entity) are  corporations
duly  organized  and  validly  existing in good  standing  under the laws of the
jurisdiction in which they are  incorporated,  and have the requisite  corporate
power and  authorization  to own their properties and to carry on their business
as now  being  conducted.  Each  of the  Company  and its  Subsidiaries  is duly
qualified as a foreign  corporation  to do business  and is in good  standing in
every  jurisdiction  in which its  ownership  of  property  or the nature of the
business  conducted  by it makes  such  qualification  necessary,  except to the
extent that the failure to be so qualified or be in good standing would not have
a Material Adverse Effect. As used in this Agreement,  "Material Adverse Effect"
means  any  material  adverse  effect  on  the  business,   properties,  assets,
operations, results of operations, or financial condition of the Company and its
Subsidiaries,  if any,  taken as a whole,  or on the  transactions  contemplated
hereby or by the  agreements  and  instruments  to be entered into in connection
herewith,  or on  the  authority  or  ability  of the  Company  to  perform  its
obligations  under the Transaction  Documents (as defined below) or the Articles
of  Amendment.  A complete  list of entities in which the  Company,  directly or
indirectly,  owns  capital  stock or holds an equity or similar  interest is set
forth on Schedule 3(a).

                  (b) Authorization;  Enforcement; Validity. The Company has the
requisite   corporate  power  and  authority  to  enter  into  and  perform  its
obligations  under  this  Agreement,   the  Warrants,  the  Registration  Rights
Agreement,  and each of the other agreements  entered into by the parties hereto
in   connection   with  the   transactions   contemplated   by  this   Agreement
(collectively,  the  "Transaction  Documents"),  and to issue the  Securities in
accordance with the terms hereof and thereof.  The execution and delivery of the
Transaction  Documents  by the  Company  and the  execution  and  filing  of the
Articles  of  Amendment  by  the  Company  and  the  consummation  by it of  the
transactions  contemplated hereby and thereby,  have been duly authorized by the
Company's Board of Directors and no further consent or authorization is required
by the  Company,  its Board of Directors or its  stockholders.  The  Transaction
Documents have been duly executed and delivered by the Company.  The Transaction
Documents   constitute  the  valid  and  binding   obligations  of  the  Company
enforceable  against the Company in accordance with their terms,  except as such
enforceability  may be  limited by general  principles  of equity or  applicable
bankruptcy,  insolvency or similar laws relating to, or affecting generally, the
enforcement of creditors' rights and remedies. The Articles of Amendment,  which
shall have been filed  prior to the  Initial  Closing  with the  Virginia  State
Corporation   Commission,   shall  thereafter  be  in  full  force  and  effect,
enforceable  against  the Company in  accordance  with their terms and shall not
have been amended.

                  (c)  Capitalization.  The  authorized  capital  stock  of  the
Company  consists of (i) 25,000,000  shares of Common Stock,  of which as of the
date hereof 4,397,861  shares are issued and  outstanding,  1,159,850 shares are
reserved for issuance pursuant to the Company's stock option and purchase plans,
and 439,868 shares are issuable and reserved for issuance pursuant to securities
(other  than  the  Preferred   Stock,  and  stock  option  and  purchase  plans)
exercisable or exchangeable

                                       4
<PAGE>

for,  or convertible into,  shares of  Common  Stock, and  (ii) 1,000,000 shares
of Preferred Stock, of which as of the date hereof,  2,500 shares are designated
as Class A Preferred Stock,  all of which is held in the Company's  treasury and
500,000 shares are designated as Series B Preferred, none of which are issued or
outstanding. All of such outstanding shares have been, or upon issuance will be,
validly  issued and are fully paid and  nonassessable.  Except as  disclosed  in
Schedule  3(c),  (A) no shares of the  Company's  capital  stock are  subject to
preemptive  rights or any other similar rights  (arising under Virginia law, the
Company's Articles of Incorporation or By-laws or any agreement or instrument to
which the Company is a party) or any liens or encumbrances granted or created by
the Company; (B) there are no outstanding debt securities issued by the Company;
(C) there are no outstanding options,  warrants,  scrip, rights to subscribe to,
calls or commitments of any character  whatsoever  relating to, or securities or
rights  convertible  into,  any shares of capital stock of the Company or any of
its Subsidiaries, or contracts,  commitments,  understandings or arrangements by
which the  Company or any of its  Subsidiaries  is or may become  bound to issue
additional  shares of capital stock of the Company or any of its Subsidiaries or
options,  warrants,  scrip,  rights to subscribe to, calls or commitments of any
character  whatsoever relating to, or securities or rights convertible into, any
shares of capital stock of the Company or any of its Subsidiaries; (D) there are
no agreements or arrangements under which the Company or any of its Subsidiaries
is obligated to register the sale of any of their  securities under the 1933 Act
(except  the  Registration  Rights  Agreement);  (E)  there  are no  outstanding
securities  or  instruments  of the  Company  or any of its  Subsidiaries  which
contain  any  redemption  or  similar  provisions,  and there are no  contracts,
commitments,  understandings  or arrangements by which the Company or any of its
Subsidiaries  is or may become  bound to redeem a security of the Company or any
of its  Subsidiaries;  (F) there are no  securities  or  instruments  containing
anti-dilution  or similar  provisions  that will be triggered by the issuance of
the Securities as described in this Agreement; and (G) the Company does not have
any stock  appreciation  rights or "phantom  stock" plans or  agreements  or any
similar  plan or  agreement.  The Company has  furnished  to each Buyer true and
correct copies of the Company's Articles of Incorporation,  as amended and as in
effect on the date hereof  (the  "Articles  of  Incorporation"),  the  Company's
By-laws, as amended and as in effect on the date hereof (the "By-laws"), and the
terms of all securities  convertible  into or exercisable  or  exchangeable  for
Common Stock and the material rights of the holders thereof in respect thereto.

                  (d)  Issuance of  Securities.  The Shares are duly  authorized
and, upon issuance at the Closing at which they are issued, shall be (i) validly
issued,  fully  paid and  non-assessable,  (ii) free from all  taxes,  liens and
charges with respect to the  issuance  thereof and (iii)  entitled to the rights
and  preferences  set forth in the  Articles  of  Amendment.  As of the  Initial
Closing,  at least  2,000,000  shares of Common Stock  (subject to adjustment as
provided  in the  Articles  of  Amendment)  will have been duly  authorized  and
reserved for issuance  upon  conversion  of the Shares and  2,000,000  shares of
Common Stock  (subject to adjustment as provided in the Warrants) will have been
duly  authorized for issuance upon exercise of the Warrants.  Upon conversion in
accordance  with the Articles of Amendment  or issuance in  accordance  with the
Warrants, the Conversion Shares and the Warrant Shares, as the case may be, will
be validly issued,  fully paid and nonassessable and free from all taxes,  liens
and charges with respect to the issue  thereof,  with the holders being entitled
to all rights accorded to a holder of Common Stock.  The issuance by the Company
of the Securities is exempt from registration under the 1933 Act.

                                       5
<PAGE>

                  (e) No Conflicts.  The execution,  delivery and performance of
the Transaction  Documents by the Company, the performance by the Company of its
obligations  under the Articles of Amendment and the consummation by the Company
of  the  transactions  contemplated  hereby  and  thereby  (including,   without
limitation,  the reservation for issuance and issuance of the Conversion  Shares
and  Warrant  Shares)  will not (i) result in a  violation  of the  Articles  of
Incorporation or the By-laws; (ii) conflict with, or constitute a default (or an
event which with notice or lapse of time or both would become a default)  under,
or  give to  others  any  rights  of  termination,  amendment,  acceleration  or
cancellation  of, any material  agreement,  indenture or instrument to which the
Company or any of its  Subsidiaries  is a party;  (iii) result in a violation of
any law, rule,  regulation,  order,  judgment or decree  (including  federal and
state securities laws and  regulations)  applicable to the Company or any of its
Subsidiaries  or by which any  property  or asset of the  Company  or any of its
Subsidiaries is bound or affected.  Neither the Company nor its  Subsidiaries is
in  violation  of any term of its  Articles of  Incorporation  or its By-laws or
their organizational  charter or by-laws,  respectively.  Except as disclosed in
Schedule 3(e),  neither the Company nor any of its  Subsidiaries is in violation
of  any  term  of  or  in  default  under  any  contract,  agreement,  mortgage,
indebtedness,  indenture,  instrument, judgment, decree or order or any statute,
rule or regulation  applicable to the Company or its Subsidiaries,  except where
such  violations and defaults would not result,  either  individually  or in the
aggregate,  in a Material  Adverse  Effect.  The business of the Company and its
Subsidiaries is not being conducted, and shall not be conducted, in violation of
any law, ordinance or regulation of any governmental  entity,  except where such
violations  would not result,  either  individually  or in the  aggregate,  in a
Material Adverse Effect. Except as specifically  contemplated by this Agreement,
as required under the 1933 Act, or as required by Blue Sky filings,  the Company
is not  required to obtain any consent,  authorization  or order of, or make any
filing or registration with, any court or governmental  agency or any regulatory
or self-regulatory agency in order for it to execute,  deliver or perform any of
its obligations under or contemplated by the Transaction Documents or to perform
its  obligations  under the Articles of Amendment in  accordance  with the terms
hereof or  thereof.  Except as  disclosed  in  Schedule  3(e),  all  consents of
security agencies and all other consents,  authorizations,  orders,  filings and
registrations  which the Company is required to obtain pursuant to the preceding
sentence  have been  obtained or effected  on or prior to the date  hereof.  The
Company and its  Subsidiaries  are unaware of any facts or  circumstances  which
might give rise to any of the foregoing.

                  (f) SEC Documents;  Financial  Statements.  Since December 31,
1997, the Company has filed all reports,  schedules, forms, statements and other
documents  required  to be filed by it with the SEC  pursuant  to the  reporting
requirements of the Securities Exchange Act of 1934, as amended (the "1934 Act")
(all of the foregoing  filed prior to the date hereof and all exhibits  included
therein  and  financial   statements   and   schedules   thereto  and  documents
incorporated  by reference  therein  being  hereinafter  referred to as the "SEC
Documents").  A complete  list of the  Company's  SEC  Documents is set forth on
Schedule 3(f). Except as disclosed on Schedule 3(f), as of the date hereof,  the
SEC Documents, as they may have been subsequently amended by filings made by the
Company with the SEC prior to the date hereof, complied in all material respects
with the  requirements  of the 1934 Act and the rules and regulations of the SEC
promulgated  thereunder  applicable  to the  SEC  Documents.  None  of  the  SEC
Documents,  as of the date hereof and as they may have been subsequently amended
by filings made by the Company with the SEC prior to the date hereof,  contained
any  untrue  statement  of a material  fact or omitted to state a material  fact

                                       6
<PAGE>

required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  Except as disclosed on Schedule 3(f), as of their respective dates,
the financial  statements of the Company included in the SEC Documents  complied
as to form in all material respects with applicable accounting  requirements and
the published rules and regulations of the SEC with respect  thereto.  Except as
disclosed on Schedule  3(f),  such  financial  statements  have been prepared in
accordance with generally accepted accounting principles,  consistently applied,
during the periods  involved  (except (i) as may be otherwise  indicated in such
financial  statements  or the notes  thereto,  or (ii) in the case of  unaudited
interim statements, to the extent they may exclude footnotes or may be condensed
or summary statements) and fairly present in all material respects the financial
position  of  the  Company  as of the  dates  thereof  and  the  results  of its
operations  and cash flows for the periods then ended  (subject,  in the case of
unaudited   statements,   to  normal  year-end  audit  adjustments).   No  other
information  provided by or on behalf of the Company to the Buyers  which is not
included  in the  SEC  Documents,  including,  without  limitation,  information
referred to in Section 2(d), contains any untrue statement of a material fact or
omits to state  any  material  fact  necessary  in order to make the  statements
therein, in the light of the circumstance under which they are or were made, not
misleading. The Company is not required to file and will not be required to file
any agreement,  note,  lease,  mortgage,  deed or other instrument  entered into
prior to the date  hereof  and to which the  Company  is a party or by which the
Company  is bound  which  has not been  previously  filed as an  exhibit  to its
reports filed with the SEC under the 1934 Act.

                  (g)  Absence  of  Certain  Changes.  Except  as  disclosed  in
Schedule 3(g) or as disclosed in the Company's  Annual Report on Form 10-KSB for
the year ended  December  26,  1999 or  Quarterly  Report on Form 10-QSB for the
period ending June 25, 2000,  since December 26, 1999,  there has been no change
or development  that has had or could  reasonably be expected to have a Material
Adverse  Effect.  The  Company has not taken any steps,  and does not  currently
expect to take any steps, to seek protection  pursuant to any bankruptcy law nor
does the  Company or any of its  Subsidiaries  have any  knowledge  or reason to
believe that its creditors intend to initiate involuntary bankruptcy proceedings
or any actual knowledge of any fact which would reasonably lead a creditor to do
so.  Except as  disclosed  in Schedule  3(g) or as  disclosed  in the  Company's
Quarterly  Report on Form  10-QSB for the period  ending  June 30,  2000,  since
December 31, 1999, the Company has not declared or paid any dividends,  sold any
assets,  individually or in the aggregate,  in excess of $100,000 outside of the
ordinary course of business or had capital expenditures,  individually or in the
aggregate, in excess of $250,000.

                  (h)  Absence  of  Litigation.   There  is  no  action,   suit,
proceeding,  inquiry  or  investigation  before or by any court,  public  board,
government  agency,  self-regulatory  organization  or body  pending  or, to the
knowledge  of the  Company  or any of its  Subsidiaries,  threatened  against or
affecting the Company, the Common Stock or any of the Company's  Subsidiaries or
any of the  Company's or the  Company's  Subsidiaries'  officers or directors in
their  capacities  as such,  except as expressly  set forth in Schedule 3(h) or,
with respect to the Company and its Subsidiaries, to the extent that such action
or threatened action does not set forth potential liability,  claims or charges,
individually or in the aggregate, in excess of $100,000.  Except as set forth in
Schedule 3(h), to the knowledge of the Company none of the directors or officers
of the Company have been involved in  securities-related  litigation  during the
past five years.

                                       7
<PAGE>


                  (i)  Acknowledgment  Regarding Buyers' Purchase of Shares. The
Company  acknowledges and agrees that each of the Buyers is acting solely in the
capacity of an arm's length purchaser with respect to the Transaction  Documents
and the  Articles of  Amendment  and the  transactions  contemplated  hereby and
thereby.  The Company  further  acknowledges  that each Buyer is not acting as a
financial  advisor or fiduciary of the Company (or in any similar capacity) with
respect to the  Transaction  Documents  and the  Articles of  Amendment  and the
transactions  contemplated hereby and thereby and any advice given by any of the
Buyers or any of their respective  representatives  or agents in connection with
the  Transaction  Documents and the Articles of Amendment  and the  transactions
contemplated hereby and thereby is merely incidental to such Buyer's purchase of
the Securities.  The Company further represents to each Buyer that the Company's
decision to enter into the  Transaction  Documents  has been based solely on the
independent evaluation by the Company and its representatives.

                  (j)  No  Undisclosed  Events,  Liabilities,   Developments  or
Circumstances.  Except for the  issuance of the Series B Preferred  and Warrants
contemplated by this Agreement, no event, liability, development or circumstance
has occurred or exists, or is contemplated to occur, with respect to the Company
or its  Subsidiaries or their  respective  business,  properties,  operations or
financial condition, that would be required to be disclosed by the Company under
applicable  securities  laws on a registration  statement on Form S-1 filed with
the SEC  relating to an issuance and sale by the Company of its Common Stock and
which has not been publicly disclosed.

                  (k) No General  Solicitation.  Neither the Company, nor any of
its affiliates, nor any person acting on its or their behalf, has engaged in any
form of general  solicitation  or general  advertising  (within  the  meaning of
Regulation  D under  the 1933 Act) in  connection  with the offer or sale of the
Securities.

                  (l) No Integrated  Offering.  Neither the Company,  nor any of
its  affiliates,  nor any person acting on its or their behalf has,  directly or
indirectly,  made any offers or sales of any security or solicited any offers to
buy any security,  under  circumstances  that would require  registration of the
issuance  by the  Company of any of the  Securities  under the 1933 Act or cause
this offering of the  Securities to be  integrated  with prior  offerings by the
Company for purposes of the 1933 Act or,  except as set forth on Schedule  3(l),
any applicable  stockholder approval provisions,  nor will the Company or any of
its Subsidiaries take any action or steps that would require registration of the
issuance by the Company of any of the  Securities  under the 1933 Act or, except
as set forth on  Schedule  3(l),  cause the  offering  of the  Securities  to be
integrated with other offerings.

                  (m)  Employee  Relations.  Neither  the Company nor any of its
Subsidiaries is involved in any union labor dispute nor, to the knowledge of the
Company or any of its Subsidiaries,  is any such dispute threatened. None of the
Company's or its Subsidiaries' employees is a member of a union which relates to
such employee's  relationship  with the Company,  neither the Company nor any of
its  Subsidiaries  is a party  to a  collective  bargaining  agreement,  and the
Company and its  Subsidiaries  believe that their relations with their employees
are good.  No executive  officer (as defined in Rule 501(f) of the 1933 Act) has
notified the Company that such officer intends to leave the Company or otherwise
terminate such officer's  employment with the Company.  No executive officer, to
the best knowledge of the Company and its  Subsidiaries,  is, or is now expected
to  be,  in  violation  of  any  material  term  of  any  employment   contract,
confidentiality,    disclosure    or    proprietary

                                       8
<PAGE>

information  agreement,  non-competition  agreement, or  any  other  contract or
agreement or any restrictive covenant, and the continued employment of each such
executive officer does not subject the Company or any of its Subsidiaries to any
liability with respect to any of the foregoing matters.

                  (n) Intellectual Property Rights. To the best of the Company's
knowledge,  the Company and its  Subsidiaries  own or possess adequate rights or
licenses  to use all  trademarks,  trade  names,  service  marks,  service  mark
registrations,  service names, patents, patent rights,  copyrights,  inventions,
licenses,  approvals,  governmental  authorizations,  trade  secrets  and  other
intellectual property rights necessary to conduct their respective businesses as
now conducted,  except where the failure to own or possess such rights would not
result,  either individually or in the aggregate,  in a Material Adverse Effect.
Except as set forth on Schedule  3(n), to the best of the  Company's  knowledge,
none of the  Company's  trademarks,  trade names,  service  marks,  service mark
registrations,  service names, patents, patent rights,  copyrights,  inventions,
licenses,  approvals,  governmental  authorizations,   trade  secrets  or  other
intellectual  property  rights have  expired or  terminated,  or are expected to
expire or  terminate  within two years from the date of this  Agreement,  except
where such expiration or termination would not result, either individually or in
the aggregate, in a Material Adverse Effect. The Company and its Subsidiaries do
not have any knowledge of any infringement by the Company or its Subsidiaries of
trademarks,  trade names,  service marks,  service mark  registrations,  service
names, patents, patent rights, copyrights,  inventions,  licenses, trade secrets
or other  intellectual  property  rights of  others,  or of any  development  of
identical  trade secrets or technical  information by others and,  except as set
forth on Schedule 3(n),  there is no claim,  action or proceeding  being made or
brought against, or to the Company's  knowledge,  being threatened against,  the
Company or its  Subsidiaries  regarding  its  trademarks,  trade names,  service
marks,  service mark  registrations,  service  names,  patents,  patent  rights,
copyrights,  inventions,  licenses,  trade  secrets,  or  infringement  of other
intellectual  property  rights.  The  Company  and its  Subsidiaries  have taken
reasonable  security measures to protect the secrecy,  confidentiality and value
of all of their intellectual properties.

                  (o) Title.  The  Company  and its  Subsidiaries  have good and
marketable  title in fee  simple to all real  property  and good and  marketable
title to all personal  property  owned by them which is material to the business
of the Company and its  Subsidiaries,  in each case free and clear of all liens,
encumbrances  and defects  except such as are described in Schedule 3(o) or such
as do not materially affect the value of such property and do not interfere with
the use made and proposed to be made of such  property by the Company and any of
its  Subsidiaries.  Any real  property  and  facilities  held under lease by the
Company and any of its Subsidiaries are held by them under valid, subsisting and
enforceable leases with such exceptions as are not material and do not interfere
with the use made and proposed to be made of such property and facilities by the
Company and its Subsidiaries.

                  (p) Insurance.  The Company and each of its  Subsidiaries  are
insured by insurers of recognized financial  responsibility  against such losses
and risks and in such  amounts  as  management  of the  Company  believes  to be
prudent  and  customary  in  the   businesses  in  which  the  Company  and  its
Subsidiaries  are engaged.  Neither the Company nor any such Subsidiary has been
refused any insurance coverage sought or applied for and neither the Company nor
any such  Subsidiary has any reason to believe that it will not be able to renew
its existing  insurance  coverage as and when such coverage expires or to obtain
similar  coverage  from  similar  insurers as may be

                                       9
<PAGE>

necessary  to  continue its  business  at  a cost that would not have a Material
Adverse  Effect,  taken as a whole.

                  (q) Regulatory Permits.  Except for Permits (as defined below)
the absence of which would not result,  either individually or in the aggregate,
in a Material  Adverse  Effect,  the  Company and its  Subsidiaries  possess all
certificates,  authorizations  and permits  issued by the  appropriate  federal,
state or foreign  regulatory  authorities  necessary to conduct their respective
businesses (the "Permits"),  and neither the Company nor any such Subsidiary has
received any notice of proceedings relating to the revocation or modification of
any such Permit.

                  (r) Internal Accounting Controls.  The Company and each of its
Subsidiaries  maintain a system of internal  accounting  controls  sufficient to
provide  reasonable  assurance that (i)  transactions are executed in accordance
with  management's  general or specific  authorizations,  (ii)  transactions are
recorded  as  necessary  to  permit  preparation  of  financial   statements  in
conformity with generally accepted  accounting  principles and to maintain asset
accountability,  (iii) access to assets is  permitted  only in  accordance  with
management's   general  or  specific   authorization   and  (iv)  the   recorded
accountability  for assets is compared  with the existing  assets at  reasonable
intervals and appropriate action is taken with respect to any differences.

                  (s) No Materially Adverse Contracts,  Etc. Neither the Company
nor any of its Subsidiaries is subject to any charter,  corporate or other legal
restriction,  or any judgment,  decree,  order,  rule or regulation which in the
judgment of the  Company's  officers  has or is expected in the future to have a
Material  Adverse Effect.  Neither the Company nor any of its  Subsidiaries is a
party to any  contract  or  agreement  which in the  judgment  of the  Company's
officers has or is expected to have a Material Adverse Effect.

                  (t) Tax Status.  The Company and each of its  Subsidiaries (i)
has made or filed all  federal  and  state  income  and all  other tax  returns,
reports and  declarations  required by any  jurisdiction  to which it is subject
(unless and only to the extent that the Company and each of its Subsidiaries has
set aside on its books  provisions  reasonably  adequate  for the payment of all
unpaid and  unreported  taxes),  (ii) has paid all taxes and other  governmental
assessments  and charges that are material in amount,  shown or determined to be
due on such returns,  reports and declarations,  except those being contested in
good faith and for which the Company has made  appropriate  reserves  for on its
books, and (iii) has set aside on its books provisions  reasonably  adequate for
the  payment of all taxes for  periods  subsequent  to the periods to which such
returns,  reports or declarations (referred to in clause (i) above) apply. There
are no unpaid  taxes in any  material  amount  claimed  to be due by the  taxing
authority of any jurisdiction,  and the officers of the Company know of no basis
for any such claim.

                  (u)  Transactions  With  Affiliates.  Except  as set  forth on
Schedule 3(u),  and other than the grant of stock options  disclosed on Schedule
3(c), none of the officers, directors or employees of the Company is presently a
party to any transaction with the Company or any of its Subsidiaries (other than
for services as  employees,  officers and  directors),  including  any contract,
agreement or other  arrangement  providing for the  furnishing of services to or
by,  providing for rental of real or personal  property to or from, or otherwise
requiring payments to or from any such officer,  director or employee or, to the
knowledge of the Company, any corporation, partnership, trust or

                                       10
<PAGE>

other entity in which any such officer, director,  or employee has a substantial
interest or is an officer, director, trustee or partner.

                  (v) Application of Takeover  Protections.  The Company and its
board of directors have taken all necessary  action,  if any, in order to render
inapplicable any control share acquisition,  business  combination,  poison pill
(including  any  distribution   under  a  rights  agreement)  or  other  similar
anti-takeover provision under the Articles of Amendment or the laws of the state
of its  incorporation  which is or could  become  applicable  to the Buyers as a
result of the transactions  contemplated by this Agreement,  including,  without
limitation,  the Company's  issuance of the Securities and the Buyers' ownership
of the Securities.

                  (w) Rights Agreement.    The   Company   has   not  adopted  a
shareholder  rights  plan  or similar arrangement  relating to  accumulations of
beneficial ownership of Common Stock or a change in control of the Company.

                  (x) No Other  Agreements.  The  Company  has not,  directly or
indirectly,  made  any  agreements  with any  Buyers  relating  to the  terms or
conditions of the transactions  contemplated by the Transaction Documents except
as set forth in the Transaction Documents.

         4.       COVENANTS.
                  ---------

                  (a) Best Efforts.  Each party  shall use its best  efforts  to
timely  satisfy  each of the  conditions  to be satisfied  by it  as provided in
Sections 6 and 7 of this Agreement.

                  (b) Form D and Blue Sky.  The Company  agrees to file a Form D
with respect to the Securities as required  under  Regulation D and to provide a
copy thereof to each Buyer promptly after such filing.  The Company shall,  take
such action as the Company shall  reasonably  determine is necessary in order to
obtain an exemption  for or to qualify the  Securities  for,  sale to the Buyers
pursuant to this Agreement under applicable securities or "Blue Sky" laws of the
states of the United  States,  and shall provide  evidence of any such action so
taken to the  Buyers.  The  Company  shall make all other  filings  and  reports
relating  to the  offer and sale of the  Securities  required  under  applicable
securities or "Blue Sky" laws of the states of the United States.

                  (c) Reporting  Status.  Until the date which is one year after
the  date  as of  which  the  Stockholders  (as  that  term  is  defined  in the
Registration Rights Agreement) may sell all of the Conversion Shares and Warrant
Shares without  restriction  pursuant to Rule 144(k)  promulgated under the 1933
Act (or successor thereto) (the "Reporting Period"),  the Company shall file all
reports  required  to be filed with the SEC  pursuant  to the 1934 Act,  and the
Company  shall not  terminate  its status as an issuer  required to file reports
under the 1934 Act even if the 1934 Act or the rules and regulations  thereunder
would otherwise permit such termination.

                  (d) Use of Proceeds.  The Company  will use the proceeds  from
the  sale  of the  Shares  substantially  for  the  development  of the  optical
channelizer and optical CDMA.

                  (e)  Financial  Information.  The  Company  agrees to send the
following  to each  Stockholder  (as that term is  defined  in the  Registration
Rights Agreement) during the Reporting Period: (i) within two (2) days after the
filing  thereof  with the SEC, a copy of its Annual  Reports on

                                       11
<PAGE>

Form 10-KSB  (or 10-K), its  Quarterly  Reports  on  Form 10-QSB  (or 10-Q), any
Current Reports on Form 8-K and any registration  statements (other than on Form
S-8) or amendments filed  pursuant to the  1933 Act,  provided  that if any such
report is not filed with the SEC through  EDGAR then the Company shall deliver a
copy of such report to each Stockholder by facsimile on the same day it is filed
with the SEC; (ii) on the same day as the release  thereof,  facsimile copies of
all press releases issued by the Company or any of its Subsidiaries;  and  (iii)
copies  of any  notices and  other information  made available  or given to  the
stockholders  of  the  Company  generally,  contemporaneously  with  the  making
available or giving thereof to the stockholders.

                  (f)  Reservation of Shares.  The Company shall take all action
necessary  to at all times have  authorized,  and  reserved  for the  purpose of
issuance,  no less than the number of shares of Common  Stock  needed to provide
for  the  issuance  of  the  shares  of  Common  Stock  upon  conversion  of all
outstanding Shares and exercise of all Warrants.

                  (g) Listing.  The Company shall as soon as practicable  secure
the listing of all of the  Registrable  Shares (as  defined in the  Registration
Rights  Agreement) upon the Nasdaq Stock Market and shall  maintain,  so long as
any  other  shares of Common  Stock  shall be so  listed,  such  listing  of all
Registrable Shares from time to time issuable under the terms of the Transaction
Documents and the Articles of Amendment.

                  (h)  Filing  of  Form  8-K.  Promptly  following  the  Initial
Closing,  the  Company  shall  file a  Current  Report  on Form 8-K with the SEC
describing  the  terms  of the  transactions  contemplated  by  the  Transaction
Documents  and  including  as exhibits to such  Current  Report on Form 8-K this
Agreement,  the Articles of Amendment and the Registration Rights Agreement,  in
the form required by the 1934 Act.

                  (i) Meeting of  Shareholders.  In the event that  designees of
the  Buyers do not at any time  comprise  a  majority  of the  directors  of the
Corporation,  the Company shall, at the request of the Buyers, convene a meeting
of  shareholders  for the election of  directors as soon as possible;  provided,
however,  that this Section 4(i) shall be applicable  only so long as Buyers (i)
hold Series B Preferred and (b) are not in default beyond the  applicable  grace
and cure provisions in their obligations to make payments on Subsequent Closings
under Section 1(c) of this Agreement.

         5.       TRANSFER AGENT INSTRUCTIONS.
                  ---------------------------

                  The  Company  shall  issue  irrevocable  instructions  to  its
transfer  agent in the form  attached  hereto  as  Exhibit  D (the  "Irrevocable
Transfer Agent  Instructions"),  and any  subsequent  transfer  agent,  to issue
certificates, registered in the name of each Buyer or its respective nominee(s),
for the  Conversion  Shares and Warrant Shares in such amounts as specified from
time to time by each  Buyer to the  Company  upon  conversion  of the  Shares or
exercise of the Warrants.  The Company  warrants that no instruction  other than
the Irrevocable  Transfer Agent Instructions  referred to in this Section 5 will
be given by the  Company to its  transfer  agent and that the  Securities  shall
otherwise be freely  transferable on the books and records of the Company as and
to the extent provided in this Agreement and the Registration  Rights Agreement.
If a Buyer  provides  the  Company  with an opinion of  counsel,  in a generally
acceptable form (it being  stipulated that an opinion of Hale and Dorr LLP shall
be  acceptable),  to the effect that a public  sale,  assignment or

                                       12
<PAGE>

transfer of Securities may be made  without  registration under  the 1933 Act or
the Buyer  provides  the  Company with  reasonable  assurances  (including,   if
requested by the Company, delivering such reasonable assurances to the Company's
counsel in connection  with such counsel rendering an opinion on the validity of
a sale by  such Buyer  pursuant  to Rule 144)  that the  Securities  can be sold
pursuant to  Rule 144  without any  restriction as  to the  number of securities
acquired as of a particular date that can then be immediately  sold, the Company
shall permit the  transfer,  and, in the case of the  Conversion  Shares and the
Warrant  Shares,  promptly  instruct  its transfer  agent to  issue one  or more
certificates in such name and in such denominations as specified  by such  Buyer
and without any restrictive legend. The Company acknowledges that a breach by it
of its  obligations hereunder  will  cause  irreparable  harm to  the  Buyers by
vitiating the  intent  and  purpose  of  the  transaction  contemplated  hereby.
Accordingly, the Company acknowledges that the remedy at law for a breach of its
obligations under this Section 5 will be inadequate and agrees,  in the event of
a breach or threatened  breach by the Company of the  provisions of this Section
5, that  the  Buyers  shall  be entitled,  in addition  to all  other  available
remedies,  to an order  and/or injunction  restraining  any breach and requiring
immediate issuance and transfer, without the necessity of showing  economic loss
and without any bond or other security being required.

         6.  CONDITIONS  TO THE  COMPANY'S  OBLIGATIONS.  The  obligation of the
Company  to  issue  and  sell  the  Shares  to  each  Buyer  is  subject  to the
satisfaction,  at or before the date of the  Initial  Closing,  or a  Subsequent
Closing, as applicable of each of the following conditions,  provided that these
conditions  are for the Company's  sole benefit and may be waived by the Company
at any time in its sole  discretion  by providing  each Buyer with prior written
notice thereof:

                  (a) As of the Initial Closing,  such Buyer shall have executed
         each of the Transaction  Documents to which it is a party and delivered
         the same to the Company.

                  (b) As of the Initial Closing, the Articles of Amendment shall
         have been filed with the Virginia State Corporation Commission;

                  (c) The  representations and warranties of such Buyer shall be
         true and correct in all material  respects as of the date when made and
         as of the Initial Closing and such  Subsequent  Closings as though made
         at that  time,  and such  Buyer  shall have  performed,  satisfied  and
         complied with the covenants,  agreements and conditions required by the
         Transaction  Documents to be  performed,  satisfied or complied with by
         such Buyer at or prior to the Initial Closing.

         7. CONDITIONS TO EACH BUYER'S OBLIGATIONS. The obligation of each Buyer
hereunder   to  purchase   the  Shares  from  the  Company  is  subject  to  the
satisfaction,  at or  before  the date of the  Initial  Closing,  of each of the
following  conditions,  provided that these conditions are for each Buyer's sole
benefit  and may be waived by such Buyer at any time in its sole  discretion  by
providing the Company with prior written notice thereof:

                  (a) The Company shall have  executed  each of the  Transaction
         Documents and delivered the same to such Buyer.

                                       13
<PAGE>

                  (b) The Articles of  Amendment  shall have been filed with the
         Virginia State Corporation Commission,  and a copy thereof certified by
         the Virginia State Corporation  Commission shall have been delivered to
         such Buyer.

                  (c) The representations and warranties of the Company shall be
         true and correct (except that  representations and warranties which are
         not qualified by the terms "material" or "Material Adverse Effect" need
         only be true and correct in all material  respects) as of the date when
         made and as of the date of the  Initial  Closing as though made at that
         time  (except for  representations  and  warranties  that speak as of a
         specific  date) and the Company  shall have  performed,  satisfied  and
         complied with the covenants,  agreements and conditions required by the
         Transaction  Documents to be  performed,  satisfied or complied with by
         the  Company  at or prior to the date of  Initial  Closing.  Such Buyer
         shall have  received a  certificate,  executed  by the Chief  Executive
         Officer of the Company, dated as of the date of Initial Closing, to the
         foregoing  effect  and as to such other  matters  as may be  reasonably
         requested by such Buyer.

                  (d) Such Buyer shall have  received the opinion of  Whiteford,
         Taylor & Preston L.L.P.,  dated as of the date of Initial Closing, in a
         form reasonably acceptable to such Buyer to the effect that:

                           (i)  the  Company  has  been  duly  incorporated  and
         organized and is validly  existing and in good standing  under the laws
         of the  Commonwealth  of Virginia.  The Company has the corporate power
         and  authority to carry on its business as now  conducted  and to enter
         into and perform its obligations under the Transaction  Documents.  The
         Company is duly  qualified to do business and is in good  standing as a
         foreign corporation in the State of Maryland.

                           (ii) the  issuance,  sale and  delivery of the Shares
         and the  Warrants by the Company and the  issuance  and delivery of the
         Conversion  Shares and the Warrant Shares have been duly authorized and
         reserved for issuance,  as the case may be, by all necessary  corporate
         action on the part of the Company. The Shares and the Warrants, when so
         issued, sold and delivered against payment therefore as contemplated by
         this Agreement,  and the Conversion Shares and the Warrant Shares, when
         issued upon conversion of the Shares or exercise of the Warrants,  will
         be validly issued, fully paid and non-assessable.

                           (iii) the execution,  delivery and performance by the
         Company of each of the Transaction  Documents have been duly authorized
         by all requisite  corporate  action,  and the Company has duly executed
         and  delivered  the  Transaction  Documents.  Each  of the  Transaction
         Documents  are valid and  binding  obligations  of the  Company and are
         enforceable  against the Company in accordance with their terms, except
         as the same may be limited by applicable  insolvency  laws or equitable
         considerations,  and except that no opinion need be expressed as to the
         enforceability of provisions  requiring  indemnification for violations
         of federal securities laws. The Company's execution and delivery of the
         Transaction  Documents and the Company's performance of its obligations
         thereunder  do not  conflict  with  or  result  in a  violation  of the
         Company's Articles of Incorporation or Bylaws,  each as amended to date
         and presently in effect,  or any indenture,  lease,  agreement or other

                                       14
<PAGE>

         instrument  known to such counsel to which the Company is a party or by
         which it or its  property is bound,  or any  decree,  judgment or order
         known to such counsel that is binding upon the Company.

                           (iv) except as obtained  and in effect at the Initial
         Closing,  no approval,  consent or  authorization  of any  governmental
         authority  (other than  filings  required to be made after such Initial
         Closing under applicable federal and state securities laws) is required
         of the  Company in  connection  with the  execution  of delivery of the
         Transaction Documents, or the offer, issuance, sale and delivery of the
         Shares or the other  transactions  to be  consummated  pursuant to this
         Agreement.

                           (v) To the best of such counsel's  knowledge,  except
         as set forth in Schedule  3(h) to this  Agreement,  there is no action,
         suit or proceeding,  or governmental inquiry or investigation,  pending
         or threatened against the Company.

                  (e) The Company  shall have  executed  and  delivered  to such
         Buyer the Preferred Stock  Certificates (in such  denominations as such
         Buyer shall  request) for the Shares  being  purchased by such Buyer at
         the Initial  Closing and the Warrants being  purchased by such Buyer at
         the Initial Closing.

                  (f) The Board of Directors  of the Company  shall have adopted
         resolutions consistent with Section 3(b) above and in a form reasonably
         acceptable to such Buyer (the "Resolutions").

                  (g) As of the date of Initial Closing,  the Company shall have
         reserved out of its  authorized and unissued  Common Stock,  solely for
         the purpose of effecting the  conversion of the Shares and the exercise
         of the Warrants, at least 4,000,000 shares of Common Stock.

                  (h) The Irrevocable  Transfer Agent Instructions,  in the form
         of  Exhibit  D  attached  hereto,  shall  have  been  delivered  to and
         acknowledged in writing by the Company's transfer agent.

                  (i)  The  Company  shall  have   delivered  to  such  Buyer  a
         certificate  evidencing  the  incorporation  and good  standing  of the
         Company and each Subsidiary in such entity's state of  incorporation or
         organization  issued  by the  Secretary  of  State  of  such  state  of
         incorporation or organization as of a date within ten days prior to the
         date of Initial  Closing and the Company  shall have  delivered to such
         Buyer  a  certificate  evidencing  the  Company's  qualification  to do
         business  in Maryland as of a date within ten days prior to the date of
         Initial Closing.

                  (j) The Company shall have delivered to such Buyer a certified
         copy of the  Articles of  Incorporation  as  certified  by the Virginia
         State Corporation  Commission as of a date within ten days prior to the
         date of Initial Closing.

                  (k)  The  Company  shall  have   delivered  to  such  Buyer  a
         secretary's  certificate,  dated  as of the  date of  Initial  Closing,
         certifying as to (A) the Resolutions, (B) the Articles of Incorporation
         and (C) the By-laws, each as in effect at the Initial Closing.

                                       15
<PAGE>

                  (l) The Company shall have  obtained all consents  required in
         connection  with  the  transaction   contemplated  by  the  Transaction
         Documents,  including  without  limitation  all  requisite  consents of
         security agencies,  and shall have delivered copies of such consents to
         the Buyers.

                  (m)  The  Company  shall  have  made  all  filings  under  all
         applicable  federal and state  securities  laws necessary to consummate
         the issuance of the Securities pursuant to this Agreement in compliance
         with such laws.

                  (n) The Company  shall have  delivered  to such Buyer a letter
         from the Company's  transfer  agent  certifying the number of shares of
         Common  Stock  outstanding  as of a date  within five days prior to the
         date of Initial Closing.

                  (o) The members of the Board of Directors of the Company shall
         be Leonard Moodispaw, Terry  Turpin, Robert  Hicks, Frank  Manning, Ray
         Keeler,  Harold  Hanson,  John  Hannon, Caroline  Pisano and H. Jeffrey
         Leonard.

                  (p)  All  of the  issued  and  outstanding  capital  stock  of
         Veriterre  Corporation shall have been assigned to the Company on terms
         acceptable to the Buyers.

                  (q) The Company shall have entered into Employment  Agreements
         in the form of Exhibit E attached here to with those persons  specified
         by the Buyers.

                  (r) The Company shall have obtained the written consent to the
         transactions  contemplated  hereby of those  persons  specified  by the
         Buyers in a form satisfactory to the Buyer.

                  (s)  The  Company  shall  have   renegotiated  the  terms  and
         conditions of its agreement with Rumsey Associates Limited  Partnership
         so that none of the amounts paid to the Company hereunder shall be paid
         to or for the benefit of Rumsey Associates Limited Partnership and such
         negotiated terms and conditions are otherwise acceptable to Buyers.

                  (t) The Company shall have  delivered to the Buyers such other
         documents relating to the transactions  contemplated by the Transaction
         Documents as the Buyers or their counsel may reasonably request.

         8.  INDEMNIFICATION.  In  consideration  of each Buyer's  execution and
delivery of the  Transaction  Documents and acquiring the Securities  thereunder
and in addition to all of the Company's other  obligations under the Transaction
Documents  and the Articles of Amendment,  the Company  shall  defend,  protect,
indemnify and hold  harmless each Buyer and each other holder of the  Securities
and all of their  stockholders,  officers,  directors,  employees  and direct or
indirect   investors  and  any  of  the  foregoing   persons'  agents  or  other
representatives  (including,  without  limitation,  those retained in connection
with  the  transactions  contemplated  by  this  Agreement)  (collectively,  the
"Indemnitees")  from and against any and all actions,  causes of action,  suits,
claims, losses, costs, penalties, fees, liabilities and damages, and expenses in
connection therewith  (irrespective of whether any such Indemnitee is a party to
the  action  for which  indemnification  hereunder  is  sought),  and  including
reasonable  attorneys' fees and disbursements  (the "Indemnified

                                       16
<PAGE>

Liabilities"),  incurred by any Indemnitee as a result of, or arising out of, or
relating  to (a)  any  misrepresentation  or  breach  of any  representation  or
warranty  made  by  the  Company  in the  Transaction  Documents  or  any  other
certificate,  instrument  or document  contemplated  hereby or thereby,  (b) any
breach of any covenant,  agreement or obligation of the Company contained in the
Transaction   Documents  or  any  other  certificate,   instrument  or  document
contemplated  hereby or thereby,  (c) any cause of action, suit or claim brought
or made against  such  Indemnitee  (other than a cause of action,  suit or claim
which  is (x)  brought  or made  by the  Company  and  (y) is not a  shareholder
derivative  suit)  and  arising  out of or  resulting  from  (i) the  execution,
delivery,  performance or enforcement of the Transaction  Documents or any other
certificate,  instrument or document  contemplated  hereby or thereby,  (ii) any
transaction  financed  or to be  financed  in  whole  or in  part,  directly  or
indirectly,  with the  proceeds of the issuance of the  Securities  or (iii) the
status of such Buyer or holder of the  Securities as an investor in the Company.
To the extent that the foregoing undertaking by the Company may be unenforceable
for any reason,  the Company shall make the maximum  contribution to the payment
and  satisfaction  of each of the Indemnified  Liabilities  which is permissible
under  applicable law.  Except as otherwise set forth herein,  the mechanics and
procedures with respect to the rights and obligations under this Section 8 shall
be the  same  as  those  set  forth  in  Section  2 of the  Registration  Rights
Agreement,  including,  without limitation, those procedures with respect to the
settlement of claims and the Company's rights to assume the defense of claims.

         9.       MISCELLANEOUS.
                  -------------

                  (a) Governing  Law; Jury Trial.  All questions  concerning the
construction,  validity,  enforcement and interpretation of this Agreement shall
be governed by the internal laws of the Commonwealth of Virginia, without giving
effect to any choice of law or conflict  of law  provision  or rule.  EACH PARTY
HEREBY  IRREVOCABLY  WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST,  A
JURY  TRIAL FOR THE  ADJUDICATION  OF ANY  DISPUTE  HEREUNDER  OR IN  CONNECTION
HEREWITH  OR  ARISING  OUT OF THIS  AGREEMENT  OR ANY  TRANSACTION  CONTEMPLATED
HEREBY.

                  (b)  Counterparts.  This  Agreement  may be executed in two or
more identical  counterparts,  all of which shall be considered one and the same
agreement and shall become effective when  counterparts have been signed by each
party and  delivered to the other  party;  provided  that a facsimile  signature
shall be  considered  due  execution  and shall be  binding  upon the  signatory
thereto with the same force and effect as if the signature were an original, not
a facsimile signature.

                  (c)  Headings.   The  headings  of  this   Agreement  are  for
convenience   of   reference   and  shall  not  form  part  of,  or  affect  the
interpretation of, this Agreement.

                  (d) Severability.  If any provision of this Agreement shall be
invalid   or   unenforceable   in   any   jurisdiction,   such   invalidity   or
unenforceability  shall  not  affect  the  validity  or  enforceability  of  the
remainder  of  this   Agreement  in  that   jurisdiction   or  the  validity  or
enforceability of any provision of this Agreement in any other jurisdiction.

                                       17
<PAGE>

                  (e) Entire Agreement;  Amendments.  This Agreement  supersedes
all other prior oral or written  agreements  between  each Buyer,  the  Company,
their  affiliates and persons acting on their behalf with respect to the matters
discussed  herein,  and this  Agreement and the  instruments  referenced  herein
contain  the entire  understanding  of the parties  with  respect to the matters
covered  herein and therein  and,  except as  specifically  set forth  herein or
therein,  neither the Company nor any Buyer makes any representation,  warranty,
covenant or  undertaking  with  respect to such  matters.  No  provision of this
Agreement may be amended or waived other than by an instrument in writing signed
by the Company and the Buyers.

                  (f)  Notices.   Any  notices,   consents,   waivers  or  other
communications  required  or  permitted  to be  given  under  the  terms of this
Agreement must be in writing and will be deemed to have been delivered: (i) upon
receipt,  when delivered  personally;  (ii) upon receipt, when sent by facsimile
(provided   confirmation  of  transmission  is  mechanically  or  electronically
generated and kept on file by the sending party);  or (iii) one (1) business day
after deposit with a nationally  recognized  overnight delivery service, in each
case  properly  addressed to the party to receive the same.  The  addresses  and
facsimile numbers for such communications shall be:

         If to the Company:

                  Essex Corporation
                  9150 Guilford Road
                  Columbia, Maryland 21046
                  Telephone:        301-939-7000
                  Facsimile:        301-953-7880
                  Attention:        Leonard E. Moodispaw, President

                                       18

<PAGE>

                  With a copy to:

                  D. Scott Freed, Esq.
                  Whiteford, Taylor & Preston, L.L.P.
                  7 Saint Paul Street
                  Baltimore, Maryland  21202-1626
                  Telephone:        410-347-8700
                  Facsimile:        410-752-7092

                  If to the Transfer Agent:

                  Registrar and Transfer Company
                  10 Commerce Drive
                  Cranford, New Jersey 07016-3572

                  If to a Buyer,  to it at the address and facsimile  number set
forth on the Schedule of Buyers, with copies to such Buyer's  representatives as
set forth on the Schedule of Buyers,  or at such other address and/or  facsimile
number and/or to the  attention of such other person as the recipient  party has
specified  by written  notice  given to each other  party five days prior to the
effectiveness of such change.  Written  confirmation of receipt (A) given by the
recipient  of  such  notice,  consent,   waiver  or  other  communication,   (B)
mechanically  or  electronically  generated  by the sender's  facsimile  machine
containing the time, date,  recipient facsimile number and an image of the first
page of such transmission or (C) provided by a nationally  recognized  overnight
delivery service shall be rebuttable  evidence of personal  service,  receipt by
facsimile or receipt from a nationally  recognized overnight delivery service in
accordance with clause (i), (ii) or (iii) above, respectively.

                  (g)  Successors and Assigns.  This Agreement  shall be binding
upon and inure to the benefit of the parties and their respective successors and
assigns,  including any  purchasers of the Shares.  The Company shall not assign
this  Agreement or any rights or  obligations  hereunder  including by merger or
consolidation  without  the prior  written  consent of the  Buyers.  A Buyer may
assign some or all of its rights  hereunder  without the consent of the Company,
provided,  however, that the transferee has agreed in writing to be bound by the
applicable  provisions  of this  Agreement and the Company has consented to such
assignment and  assumption,  which consent shall not be  unreasonably  withheld.
Notwithstanding  the foregoing,  a Buyer may transfer  Shares only to a partner,
member,  stockholder or affiliate of such Buyer, but a Buyer may transfer freely
Conversion Shares or any other securities of the Company a Buyer may hold.

                  (h) No Third Party  Beneficiaries.  This Agreement is intended
for the benefit of the parties  hereto and their respective permitted successors
and assigns,  and is  not for the  benefit of, nor  may any provision  hereof be
enforced by, any other person.

                  (i)  Survival.  The  representations  and  warranties  of  the
Company  and the  Buyers  contained  in  Sections  2 and 3, the  agreements  and
covenants set forth in Sections 4, 5 and 9, and the  indemnification  provisions
set forth in Section 8, shall survive the Initial  Closing.  Each Buyer shall be
responsible  only  for  its  own  representations,  warranties,  agreements  and
covenants hereunder.

                                       19
<PAGE>

                  (j) Publicity. The Company and each Buyer shall have the right
to approve  before  issuance any press  releases or any other public  statements
with respect to the  transactions  contemplated  hereby,  such consent not to be
unreasonably withheld.

                  (k) Further  Assurances.  Each party shall do and perform,  or
cause to be done and  performed,  all such  further  acts and things,  and shall
execute and deliver all such other  agreements,  certificates,  instruments  and
documents,  as the other party may reasonably  request in order to carry out the
intent and accomplish the purposes of this Agreement and the consummation of the
transactions contemplated hereby.

                  (l) Brokers; Placement Agent. The Company acknowledges that it
has not engaged a broker or placement  agent in connection  with the sale of the
Shares,  or the Warrants.  The Company  shall pay, and hold each Buyer  harmless
against,  any  liability,  loss  or  expense  (including,   without  limitation,
attorney's fees and out-of-pocket  expenses) arising in connection with any such
claim for brokers',  financial  advisory or similar fees in connection with such
transaction.

                  (m)  Remedies.  Each Buyer and each  holder of the  Securities
shall have all rights and remedies set forth in the  Transaction  Documents  and
the  Articles of Amendment  and all rights and remedies  which such holders have
been  granted at any time under any other  agreement  or contract and all of the
rights which such holders have under any law. Any person having any rights under
any  provision  of this  Agreement  shall be  entitled  to enforce  such  rights
specifically  (without posting a bond or other security),  to recover damages by
reason of any breach of any  provision  of this  Agreement  and to exercise  all
other rights granted by law.

                  (n) Voting of Common Stock by Buyers.  Each Buyer agrees that,
so long as it  holds  Series  B  Preferred  which  it has the  right  to vote as
provided in Section (c)(B)(4)(a) of the Articles of Amendment,  such Buyer shall
vote any  shares  of Common  Stock  held by it or any of its  affiliates  on any
matter voted on by  shareholders  of the Company in the same  proportions as all
other shares of the Common Stock of the Company,  excluding any shares of Common
Stock held by a Buyer, are voted on such matter.  It shall be a condition of any
transfer by a Buyer of shares of Common  Stock  acquired by a Buyer  pursuant to
conversion  of Series B Preferred  or  exercise of a Warrant  (but not shares of
Common  Stock  acquired by the Buyer in the open  market),  that the  transferee
agree to be bound by the provisions of this subsection (n) to the same extent as
the Buyer.

                                       20
<PAGE>


                  IN WITNESS  WHEREOF,  the Buyers and the  Company  have caused
this  Securities  Purchase  Agreement  to be duly  executed as of the date first
written above.

                                    COMPANY:

                                    ESSEX CORPORATION


                                    By:  /s/ Leonard E. Moodispaw
                                       --------------------------------
                                        Name:      Leonard E. Moodispaw
                                        Title:     President & CEO

                                     BUYERS:

                                     GEF OPTICAL INVESTMENT
                                     COMPANY, LLC


                                     By:  /s/ H. Jeffrey Leonard
                                        -------------------------------
                                         Name:      H. Jeffrey Leonard
                                         Title:     President

                                     NETWORKING VENTURES, L.L.C.


                                     By:  /s/ John G. Hannon
                                        -------------------------------
                                         Name:      John G. Hannon
                                         Title:     Partner

                                       21

<PAGE>

<TABLE>

                               SCHEDULE OF BUYERS

<CAPTION>

                                                                                                      Shares Covered
                          Investor Address        Number of Shares   Number of Shares                       by
Invester Name             and Facsimile Number    (Initial Closing)  Subsequent Closings                 Warrants
--------------            --------------------    -----------------  ---------------------------      --------------
<S>                       <C>                         <C>            <C>                  <C>            <C>
GEF Optical Investment    1225 Eye Street, N.W.       125,000        December 15, 2000:   31,250         1,000,000
Company, LLC              Suite 900                                  March 15, 2001:      31,250
                          Washington, DC 20005                       June 15, 2001:       31,250
                                                                     September 15, 2001:  31,250


Networking Ventures,      8970 Route 108              125,000        December 15, 2000:   31,250         1,000,000
L.L.C.                    Columbia, MD 21045                         March 15, 2001:      31,250
                                                                     June 15, 2001:       31,250
                                                                     September 15, 2001:  31,250

</TABLE>

                                       22

<PAGE>


                                                         SCHEDULES

Schedule 3(a)       -      Subsidiaries
Schedule 3(c)       -      Capitalization
Schedule 3(e)       -      Conflicts
Schedule 3(f)       -      SEC Documents
Schedule 3(g)       -      Material Changes
Schedule 3(h)       -      Litigation
Schedule 3(l)       -      Integration
Schedule 3(n)       -      Intellectual Property
Schedule 3(o)       -      Liens
Schedule 3(u)       -      Transactions with Affiliates


                                    EXHIBITS


Exhibit A           -      Form of Articles of Amendment
Exhibit B           -      Form of Warrant
Exhibit C           -      Form of Registration Rights Agreement
Exhibit D           -      Form of Irrevocable Transfer Agent Instructions
Exhibit E           -      Form of Employment Agreement


                                       23

<PAGE>


                                                                 Schedule 3(a)

                                  SUBSIDIARIES



                                      NONE

                                       24

<PAGE>


                                                                 Schedule 3(c)

                                 CAPITALIZATION



    3(c)B     $375,714 of  outstanding 10%  Convertible Debentures  due November
              2000

    3(c)C     1.   125,000 share option to Rumsey Associates Limited Partnership
                   expires December 31, 2004

              2.   75,000 nonqualified stock  option to Mr. Leonard E. Moodispaw
                   expires June 8, 2008

              3.   21,500  nonqualified stock option to Mr. Joseph R. Kurry, Jr.
                   expires march 15, 2010

              4.   Placement  agent  warrants convertible  into 28,571 shares of
                   common stock which expire November 30, 2000

              5.   Debenture holder warrants  convertible  into 78,400 shares of
                   common stock which expires November 30, 2000

    3(c)D     1.   Obligation to register shares from convertible debentures

              2.   Obligation  to  register shares from  option issued to Rumsey
                   Associates Limited Partnership

              3.   Obligation to register debenture holder warrants

              4.   Obligation to register placement agent warrants

    3(c)F     Option  Agreement  with  Rumsey   Associates  Limited  Partnership
              contains anti-dilution provision as to Option Exercise Price.

    3(c)G     The  Company's  Stock  Option  Plans  all  contain  provisions for
              issuance of stock appreciation rights.

                                       25

<PAGE>


                                                                 Schedule 3(e)

                                    CONFLICTS



         1.        Under the Settlement agreement with Rumsey Associates Limited
                   Partnership  dated July 1, 1994 (as amended),  the Company is
                   required to make a pro rata payment from the proceeds of this
                   transaction.

                                       26

<PAGE>


                                  SEC DOCUMENTS



      1.    1997 Form 10-KSB/A No. 1 dated September 14, 1998

      2.    1998 Form 10-QSB for the quarterly period ended March 29, 1998 dated
            August 12, 1998

      3.    1998  Form 10-QSB for the quarterly period ended June 28, 1998 dated
            August 12, 1998

      4.    1998  Form 10-QSB for  the quarterly period ended September 28, 1998
            dated October 21, 1998

      5.    Proxy Statement for Annual Meeting of Shareholders dated October 12,
            1998

      6.    1998 Form 10-KSB dated march 25, 1999

      7.    1999 Form 10-QSB for the quarterly period ended March 28, 1999 dated
            May 12, 1999

      8.    1999  Form 10-QSB for the quarterly period ended June 27, 1999 dated
            July 23, 1999

      9.    1999  Form 10-QSB  for the quarterly period ended September 26, 1999
            dated October 14, 1999

      10.   Proxy Statement for Annual Meeting of Shareholders dated October 11,
            1999

      11.   1999 Form 10-KSB dated March 17, 2000

      12.   2000 From 10-QSB for the quarterly period ended March 26, 2000 dated
            May 3, 2000

      13.   2000 Form 10-QSB for  the quarterly period ended June 25, 2000 dated
            August 7, 2000

      14.   Form S-8 for the 1999, 1998 and 1997  Stock Option  and Appreciation
            Rights Plan dated May 11, 2000

                                       27

<PAGE>


                                                                 Schedule 3(g)

                            MATERIAL ADVERSE CHANGES



                                      NONE

                                       28

<PAGE>


                                                                 Schedule 3(h)

                              ABSENCE OF LITIGATION



                                      NONE

                                       29

<PAGE>


                                                                 Schedule 3(l)

                             NO INTEGRATED OFFERING



                                      NONE

                                       30

<PAGE>


                                                                 Schedule 3(n)

                          INTELLECTUAL PROPERTY RIGHTS



                                      NONE

                                       31

<PAGE>


                                                                 Schedule 3(o)

                                      TITLE



         1.      Security interest  granted in  assets except patents and fixed
                 assets in connection with Assignment and Transfer of Receivable
                 Agreement dated July 30, 1998 with Commerce Funding Corporation

         2.      Security  Agreement  dated  December  29,  1995  between  Essex
                 Corporation and holders of the 10%  Convertible  Collateralized
                 Debentures  Due November  2000  granting  security  interest in
                 current assets except: bank lock box cash; accounts receivable;
                 general intangibles  including patents and patent applications;
                 and certain fixed assets subject to liens.

                                       32

<PAGE>


                                                                 Schedule 3(u)

                          TRANSACTIONS WITH AFFILIATES


          HarryLetaw, Jr., an employee  of Essex Corporation, is the  sole owner
          of VeriTerre Corporation. Essex had a contract to provide professional
          services to VeriTerre in 1998 and 1999.

                                       33

<PAGE>

                                    Exhibit A

                          Form of Articles of Amendment


<PAGE>

                                    Exhibit B

                                 Form of Warrant

<PAGE>

                                    Exhibit C

                      Form of Registration Rights Agreement
<PAGE>


                                    Exhibit D

                 Form of Irrevocable Transfer Agent Instructions

<PAGE>

                                ESSEX CORPORATION

                              September ____, 2000

VIA FACSIMILE

Mr. Nick Giancaspro
Registrar and Transfer Company
10 Commerce Drive
Cranford, New Jersey  07016-3572



Dear Mr. Giancaspro:

         Reference is made to that certain  Securities  Purchase Agreement to be
entered  into by and  among  Essex  Corporation,  a  Virginia  corporation  (the
"Company"),  and Global  Environment  Strategic  Technology  Partners,  L.P. and
Networking Ventures, L.L.C. (collectively,  the "Holders") pursuant to which the
Company is issuing to the Holders  shares of its Series B Convertible  Preferred
Stock (the "Preferred  Shares"),  which shall be convertible  into shares of the
Company's  Common  Stock (the  "Common  Stock").  This letter shall serve as our
irrevocable  authorization  and  direction  to you  (provided  that  you are the
transfer agent of the Company at such time) to issue shares of Common Stock upon
conversion  of the  Preferred  Shares (the  "Conversion  Shares") to or upon the
order  of a  Holder  from  time  to time  upon  surrender  to you of a  properly
completed and duly executed  Conversion  Notice, as the case may be, in the form
attached  hereto  as  Exhibit  I. So long as you have  previously  received  (x)
written  confirmation from counsel to the Company that a registration  statement
covering  resales of the  Conversion  Shares has been declared  effective by the
Securities and Exchange Commission (the "SEC") under the Securities Act of 1933,
as amended (the "1933 Act"), and (y) a copy of such registration statement, then
the certificates  representing  the Conversion  Shares shall not bear any legend
restricting  transfer of the Conversion  Shares and should not be subject to any
stop-transfer  restriction;  provided,  however, that if you have not previously
received  (i)  written   confirmation   from  counsel  to  the  Company  that  a
registration  statement  covering  resales  of the  Conversion  Shares  has been
declared  effective  by the SEC  under  the  1933  Act,  and (ii) a copy of such
registration  statement,  then the certificates for the Conversion  Shares shall
bear the following legend:

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE  SECURITIES  ACT OF 1933,  AS AMENDED,  OR  APPLICABLE  STATE
         SECURITIES  LAWS.  THE  SECURITIES  MAY NOT BE OFFERED FOR SALE,  SOLD,
         TRANSFERRED  OR  ASSIGNED  (I) IN  THE  ABSENCE  OF  (A)  AN  EFFECTIVE
         REGISTRATION  STATEMENT FOR THE SECURITIES  UNDER THE SECURITIES ACT OF
         1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS OR (B) AN OPINION
         OF COUNSEL REASONABLY  SATISFACTORY TO THE COMPANY THAT REGISTRATION
<PAGE>

         IS NOT  REQUIRED UNDER SAID ACT OR APPLICABLE  STATE SECURITIES LAWS OR
         (II) UNLESS SOLD PURSUANT TO RULE 144 UNDER SAID ACT.


        A form of  written  confirmation  from  counsel to the  Company  that a
registration  statement  covering  resales  of the  Conversion  Shares  has been
declared  effective by the SEC under the 1933 Act is attached  hereto as Exhibit
II.

         Please be advised  that the Holders are relying  upon this letter as an
inducement to enter into the Securities  Purchase  Agreement  and,  accordingly,
each Holder is a third party beneficiary to these instructions.

         Please execute this letter in the space  indicated to acknowledge  your
agreement  to act in  accordance  with these  instructions.  Should you have any
questions concerning this matter, please contact me at 301-953-8833.

                                           Very truly yours,

                                           ESSEX CORPORATION

                                           By: ____________________________

                                           Name: __________________________

                                           Title: _________________________

ACKNOWLEDGED AND AGREED:

Registrar and Transfer Company


By:_________________________________

Title:_______________________________

                                       2

<PAGE>


                                    EXHIBIT I

                                ESSEX CORPORATION

                                CONVERSION NOTICE


         Reference is made to the Articles of Amendment of Essex Corporation for
its Series B  Convertible  Preferred  Stock (the  "Articles of  Amendment").  In
accordance  with and  pursuant to the  Articles of  Amendment,  the  undersigned
hereby elects to convert the number of shares of Series B Convertible  Preferred
Stock, (the "Preferred  Shares"),  of Essex Corporation,  a Virginia corporation
(the  "Company"),  indicated  below into  shares of Common  Stock  (the  "Common
Stock"), of the Company, as of the date specified below.

   Date of Conversion:_________________________________________________________

   Number of Preferred Shares to be converted:_________________________________

   Stock certificate no(s). of Preferred Shares to be converted:_______________

Please confirm the of number of shares of Common Stock to be issued:___________

Please  issue the  Common  Stock  into  which  the  Preferred  Shares  are being
converted  and, if  applicable,  any check drawn on an account of the Company in
the following name and to the following address:

   Issue to:_________________________________________________________________

            _________________________________________________________________

   Facsimile Number:_________________________________________________________

   Authorization:____________________________________________________________

                      By:  __________________________________________________

                      Title:  _______________________________________________

   Dated:____________________________________________________________________

   Account Number (if electronic book entry transfer):_______________________

   Transaction Code Number (if electronic book entry transfer):______________

                                       3

<PAGE>



                                   EXHIBIT II

                         FORM OF NOTICE OF EFFECTIVENESS
                            OF REGISTRATION STATEMENT

Mr. Nick Giancaspro
Registrar and Transfer Company
10 Commerce Drive
Cranford, New Jersey  07016-3572


Dear Mr.Giancaspro:

         We are  counsel  to Essex  Corporation,  a  Virginia  corporation  (the
"Company"),  and have  represented  the Company in connection  with that certain
Securities  Purchase  Agreement (the "Purchase  Agreement")  entered into by and
among the Company and the Buyers named  therein  (collectively,  the  "Holders")
pursuant  to which the  Company  issued to the  Holders  shares of its  Series B
Convertible Preferred Stock (the "Preferred Shares"), which shall be convertible
into shares of the Company's Class A Common Stock (the "Common Stock"). Pursuant
to the Purchase  Agreement,  the Company  also has entered  into a  Registration
Rights Agreement with the Holders (the "Registration Rights Agreement") pursuant
to which the Company  agreed,  among other things,  to register the  Registrable
Shares (as defined in the Registration  Rights Agreement),  including the shares
of Common Stock  issuable upon  conversion of the  Preferred  Shares,  under the
Securities  Act of 1933,  as amended (the "1933 Act").  In  connection  with the
Company's obligations under the Registration Rights Agreement,  on ____________,
____,  the  Company  filed a  Registration  Statement  on  Form  S-3  (File  No.
333-____________)  (the  "Registration   Statement")  with  the  Securities  and
Exchange  Commission (the "SEC") relating to the Registrable  Shares which names
each of the Holders as a selling stockholder thereunder.

         In connection  with the  foregoing,  we advise you that a member of the
SEC's  staff has  advised  us by  telephone  that the SEC has  entered  an order
declaring the  Registration  Statement  effective under the 1933 Act at [TIME OF
EFFECTIVENESS]  on  [DATE  OF  EFFECTIVENESS]  and we have no  knowledge,  after
telephonic  inquiry  of a  member  of the  SEC's  staff,  that  any  stop  order
suspending its  effectiveness  has been issued or that any  proceedings for that
purpose  are  pending  before,  or  threatened  by, the SEC and the  Registrable
Securities  are  available  for  resale  under  the  1933  Act  pursuant  to the
Registration Statement.

                                                     Very truly yours,

                                                     [Counsel for Company]


cc:      [LIST NAMES OF HOLDERS]

                                       4

<PAGE>

                                    Exhibit E

                          Form of Employment Agreement

<PAGE>


                              EMPLOYMENT AGREEMENT

         THIS  EMPLOYMENT  AGREEMENT  (the  "Agreement"),  made  this 1st day of
September, is entered into by Essex Corporation, a Virginia corporation with its
principal place of business at 9150 Guilford Road, Columbia, Maryland 21046 (the
"Company"),   and  _______________,   residing   at______________________   (the
"Employee").

         The Company desires to employ the Employee, and the Employee desires to
be  employed  by the  Company.  In  consideration  of the mutual  covenants  and
promises  contained  herein,  and other  good and  valuable  consideration,  the
receipt and sufficiency of which are hereby  acknowledged by the parties hereto,
the parties agree as follows:

1. Term of Employment. The Company hereby agrees to employ the Employee, and the
Employee hereby accepts employment with the Company, upon the terms set forth in
this   Agreement,   for  the  period   commencing  on  September  1,  2000  (the
"Commencement  Date") and ending on August 31, 2002 (such  period,  as it may be
extended, the "Employment Period"),  unless sooner terminated in accordance with
the provisions of Section 4.

2. Title; Capacity. The Employee shall serve as  ____________________ or in such
other  reasonably  comparable  position as the Company or its Board of Directors
(the "Board") may determine  from time to time.  The Employee  shall be based at
the Company's headquarters in Columbia, Maryland, or such place or places in the
continental  United States as the Board shall  determine.  The Employee shall be
subject to the  supervision of, and shall have such authority as is delegated to
the Employee  by, the Board or such officer of the Company as may be  designated
by the Board.

         The Employee hereby accepts such employment and agrees to undertake the
duties and responsibilities  inherent in such position and such other duties and
responsibilities as the Board or its designee shall from time to time reasonably
assign to the Employee. The Employee agrees to devote his or her entire business
time, attention and energies to the business and interests of the Company during
the Employment Period.  The Employee agrees to abide by the rules,  regulations,
instructions,  personnel  practices  and policies of the Company and any changes
therein which may be adopted from time to time by the Company.

3. Compensation and Benefits.

     3.1 Salary. The Company shall pay the Employee, in periodic installments in
accordance with the Company's customary payroll practices, an annual base salary
of $__________ commencing on September 11, 2000. Such salary shall be subject to
adjustment  thereafter as determined by the Board.

     3.2 Bonus:  The Company shall pay to the Employee , upon  execution of this
Agreement,  a bonus of $ ------.  If  Employee  terminates  employment  with the
Company  before 31 August,  2001, for any reason other than death or disability,
the bonus must promptly be repaid to Company.

<PAGE>

     3.3 Fringe  Benefits.  The Employee shall be entitled to participate in all
bonus and benefit  programs that the Company  establishes and makes available to
its employees,  if any, to the extent that Employee's position,  tenure, salary,
age, health and other qualifications make him or her eligible to participate.

     3.4 Reimbursement of Expenses. The Company shall reimburse the Employee for
all reasonable travel,  entertainment and other expenses incurred or paid by the
Employee  in  connection  with,  or related  to, the  performance  of his or her
duties,  responsibilities  or services under this Agreement,  in accordance with
policies and procedures, and subject to limitations, adopted by the Company from
time to time.

     3.5 Withholding.  All salary,  bonus and other compensation  payable to the
Employee shall be subject to applicable withholding taxes.

4. Termination of Employment  Period. The employment of the Employee by the
Company pursuant to this Agreement shall terminate upon the occurrence of any of
the following:

     4.1 Expiration of the Employment Period;

     4.2  At  the  election  of the  Company,  for  Cause  (as  defined  below),
immediately  upon written  notice by the Company to the  Employee,  which notice
shall identify the Cause upon which the  termination is based.  For the purposes
of this Section 4.2,  "Cause" shall mean (a) a good faith finding by the Company
that (i) the  Employee  has failed to  perform  his or her  reasonably  assigned
duties for the  Company  and has failed to remedy  such  failure  within 10 days
following  written notice from the Company to the Employee  notifying him or her
of such  failure,  or  (ii)  the  Employee  has  engaged  in  dishonesty,  gross
negligence or misconduct, or (b) the conviction of the Employee of, or the entry
of a  pleading  of guilty  or nolo  contendere  by the  Employee  to,  any crime
involving moral turpitude or any felony;

     4.3 At the election of the  Employee,  for Good Reason (as defined  below),
immediately  upon written  notice by the  Employee to the Company,  which notice
shall  identify  the Good Reason upon which the  termination  is based.  For the
purposes of this Section 4.3,  "Good  Reason" for  termination  shall mean (i) a
material  adverse change in the  Employee's  authority,  duties or  compensation
without the prior consent of the Employee, (ii) a material breach by the Company
of the terms of this  Agreement,  which  breach is not  remedied  by the Company
within  10 days  following  written  notice  from the  Employee  to the  Company
notifying it of such breach or (iii) the relocation of the  Employee's  place of
work more than 30 miles from the Company's current executive offices.

     4.4  Upon  the  death  or  disability  of the  Employee.  As  used  in this
Agreement,  the term "disability" shall mean the inability of the Employee,  due
to a  physical  or mental  disability,  for a period of 90 days,  whether or not
consecutive,  during any  360-day  period to perform the  services  contemplated
under this Agreement,  with or without reasonable  accommodation as that term is
defined under state or federal law. A determination  of disability shall be made
by a physician satisfactory to both the Employee and the Company,  provided that
if the Employee  and the Company do not agree on a  physician,  the Employee and
the Company

                                       2
<PAGE>

shall  each  select a  physician  and these two  together  shall  select a third
physician, whose determination as to disability shall be binding on all parties;

     4.5 At  the  election  of  either  party,  upon not less than 30 days prior
written notice of termination.

5. Effect of Termination.

     5.1  At-Will  Employment.  If the  Employment  Period  expires  pursuant to
Section  1 hereof,  then,  unless  the  Company  notifies  the  Employee  to the
contrary,  the Employee shall continue his or her employment on an at-will basis
following  the  expiration of the  Employment  Period.  Such at-will  employment
relationship  may be  terminated  by  either  party at any time and shall not be
governed by the terms of this Agreement.

     5.2 Payments Upon Termination.

     (a) In the event the Employee's  employment is terminated the Company shall
pay to the Employee the  compensation and benefits  otherwise  payable to him or
her under Section 3 through the last day of his or her actual  employment by the
Company and such other payments as provided in the written policy of Company.

     5.3  Survival.  The  provisions  of  Sections  6 and 7  shall  survive  the
termination of this Agreement.

6. Non-Competition and Non-Solicitation.

     6.1 Restricted  Activities.  During the period of the Employee's employment
with the Company and for a period of twelve (12) months after the termination or
expiration  thereof,  the Employee  will not directly or  indirectly  (i) within
North  America,  as an individual  proprietor,  partner,  stockholder,  officer,
employee,  director, joint venturer,  investor, lender, or in any other capacity
whatsoever  (other than as the holder of not more than one  percent  (1%) of the
total outstanding stock of a publicly-held  company),  engage in the business of
developing, producing, marketing, furnishing or selling opto-electronic products
or services of the kind or type used,  acquired,  developed or being  developed,
produced,  marketed,  furnished  or sold by the Company  while the  Employee was
employed  by the  Company;  or (ii)  recruit,  solicit or induce,  or attempt to
induce,  any employee or employees of the Company to terminate their  employment
with, or otherwise cease their relationship with, the Company; or (iii) solicit,
divert or take  away,  or  attempt  to  divert or take  away,  the  business  or
patronage  (with respect to products or services of the kind or type  developed,
produced,  marketed,  furnished  or sold by the  Company) of any of the clients,
customers or accounts,  or prospective  clients,  customers or accounts,  of the
Company which were contacted, solicited or served by the Employee while employed
by the Company.

     6.2 Interpretation. If any restriction set forth in this Section 6 is found
by any court of competent  jurisdiction to be  unenforceable  because it extends
for too long a period of time or over too great a range of  activities or in too
broad a geographic area, it shall be interpreted to extend only over the maximum
period of time,  range of activities  or  geographic  area as to which it may be
enforceable.

                                       3
<PAGE>

     6.3 Equitable  Remedies.  The restrictions  contained in this Section 6 are
necessary for the protection of the business and goodwill of the Company and are
considered  by the  Employee to be  reasonable  for such  purpose.  The Employee
agrees  that any  breach  of this  Section  6 is  likely  to cause  the  Company
substantial  and  irrevocable  damage  and  therefore,  in the event of any such
breach, the Employee agrees that the Company, in addition to such other remedies
which may be  available,  shall be entitled to  specific  performance  and other
injunctive relief.

7. Proprietary Information and Developments.

     7.1 Proprietary Information.

     (a) The Employee agrees that all information, whether or not in writing, of
a private,  secret or  confidential  nature  concerning the Company's  business,
business   relationships  or  financial  affairs   (collectively,   "Proprietary
Information") is and shall be the exclusive  property of the Company.  By way of
illustration,   but  not   limitation,   Proprietary   Information  may  include
inventions,  products, processes, methods, techniques,  formulas,  compositions,
compounds,  projects,   developments,   plans,  research  data,  clinical  data,
financial data, personnel data, computer programs,  customer and supplier lists,
and  contacts at or  knowledge  of  customers  or  prospective  customers of the
Company.  The  Employee  will not disclose any  Proprietary  Information  to any
person or entity  other than  employees  of the  Company or use the same for any
purposes  (other than in the  performance of his or her duties as an employee of
the  Company)  without  written  approval by an officer of the  Company,  either
during or after his or her  employment  with the Company,  unless and until such
Proprietary  Information  has  become  public  knowledge  without  fault  by the
Employee.

     (b) The  Employee  agrees  that all  files,  letters,  memoranda,  reports,
records, data, sketches,  drawings,  laboratory notebooks,  program listings, or
other written,  photographic,  or other tangible material containing Proprietary
Information,  whether  created by the Employee or others,  which shall come into
his or her custody or possession, shall be and are the exclusive property of the
Company to be used by the Employee only in the  performance of his or her duties
for the Company.  All such materials or copies thereof and all tangible property
of the Company in the custody or possession  of the Employee  shall be delivered
to the  Company,  upon the  earlier  of (i) a  request  by the  Company  or (ii)
termination of his or her  employment.  After such delivery,  the Employee shall
not retain any such materials or copies thereof or any such tangible property.

     (c) The Employee  agrees that his or her  obligation  not to disclose or to
use  information  and materials of the types set forth in paragraphs (a) and (b)
above, and his or her obligation to return materials and tangible property,  set
forth in  paragraph  (b)  above,  also  extends  to such  types of  information,
materials and tangible  property of customers of the Company or suppliers to the
Company or other third  parties who may have  disclosed or entrusted the same to
the Company or to the Employee.

                                       4

<PAGE>

     7.2 Developments.

     (a) The Employee will make full and prompt disclosure to the Company of all
inventions,  improvements,  discoveries,  methods,  developments,  software, and
works of  authorship,  whether  patentable  or not,  which  are  created,  made,
conceived or reduced to practice by him or her or under his or her  direction or
jointly with others during his or her employment by the Company,  whether or not
during normal  working hours or on the premises of the Company (all of which are
collectively referred to in this Agreement as "Developments").

     (b) The Employee agrees to assign and does hereby assign to the Company (or
any person or entity designated by the Company) all his or her right,  title and
interest  in  and  to  all  Developments   and  all  related   patents,   patent
applications, copyrights and copyright applications. However, this paragraph (b)
shall not apply to  Developments  which do not relate to the  present or planned
business  or  research  and  development  of the  Company and which are made and
conceived by the Employee not during normal working hours,  not on the Company's
premises and not using the Company's  tools,  devices,  equipment or Proprietary
Information.  The Employee  understands that, to the extent this Agreement shall
be  construed  in  accordance  with  the laws of any  state  which  precludes  a
requirement  in an employee  agreement to assign  certain  classes of inventions
made by an employee, this paragraph (b) shall be interpreted not to apply to any
invention  which a court  rules  and/or the  Company  agrees  falls  within such
classes.  The  Employee  also  hereby  waives all claims to moral  rights in any
Developments.

     (c) The Employee  agrees to cooperate  fully with the Company,  both during
and  after  his  or  her  employment  with  the  Company,  with  respect  to the
procurement,  maintenance  and  enforcement  of  copyrights,  patents  and other
intellectual  property rights (both in the United States and foreign  countries)
relating to Developments. The Employee shall sign all papers, including, without
limitation, copyright applications,  patent applications,  declarations,  oaths,
formal  assignments,  assignments  of priority  rights,  and powers of attorney,
which the Company may deem necessary or desirable in order to protect its rights
and  interests  in any  Development.  The  Employee  further  agrees that if the
Company is unable,  after  reasonable  effort,  to secure the  signature  of the
Employee on any such  papers,  any  officer of the Company  shall be entitled to
execute any such papers as the agent and the  attorney-in-fact  of the Employee,
and the Employee hereby irrevocably  designates and appoints each officer of the
Company as his or her agent and  attorney-in-fact  to execute any such papers on
his or her  behalf,  and to take any and all  actions  as the  Company  may deem
necessary  or  desirable  in order to protect  its rights and  interests  in any
Development, under the conditions described in this sentence.

     7.3 United States Government  Obligations.  The Employee  acknowledges that
the Company from time to time may have agreements with other parties or with the
United States  Government,  or agencies  thereof,  which impose  obligations  or
restrictions on the Company regarding  inventions made during the course of work
under such  agreements or regarding the  confidential  nature of such work.  The
Employee agrees to be bound by all such obligations and  restrictions  which are
made known to the  Employee  and to take all  appropriate  action  necessary  to
discharge the obligations of the Company under such agreements.

                                       5
<PAGE>

     7.4 Equitable  Remedies.  The restrictions  contained in this Section 7 are
necessary for the protection of the business and goodwill of the Company and are
considered  by the  Employee to be  reasonable  for such  purpose.  The Employee
agrees  that any  breach  of this  Section  7 is  likely  to cause  the  Company
substantial and irrevocable damage which is difficult to measure.  Therefore, in
the event of any such breach, the Employee agrees that the Company,  in addition
to such other remedies which may be available, shall have the right to obtain an
injunction from a court  restraining such a breach or threatened  breach and the
right to specific performance of the provisions of this Section 7.

8. Other Agreements.  The Employee represents that his or her performance of all
the  terms of this  Agreement  and the  performance  of his or her  duties as an
employee of the Company do not and will not breach any agreement  with any prior
employer or other  party to which the  Employee  is a party  (including  without
limitation any  nondisclosure or  non-competition  agreement).  Any agreement to
which  the  Employee  is  a  party  with  any  prior  employer  or  relating  to
nondisclosure,  non-competition  or no-solicitation of employees or customers is
listed on Schedule A attached hereto.

9. Miscellaneous.

     9.1 Notices.  Any notices  delivered  under this Agreement  shall be deemed
duly  delivered  four  business days after it is sent by registered or certified
mail, return receipt requested, postage prepaid, or one business day after it is
sent for next-business day delivery via a reputable nationwide overnight courier
service,  in  each  case  to the  address  of the  recipient  set  forth  in the
introductory  paragraph  hereto.  Either  party may change the  address to which
notices are to be delivered  by giving  notice of such change to the other party
in the manner set forth in this Section 9.1.

     9.2 Pronouns.  Whenever the context may require,  any pronouns used in this
Agreement shall include the corresponding  masculine,  feminine or neuter forms,
and the singular forms of nouns and pronouns shall include the plural,  and vice
versa.

     9.3 Entire Agreement.  This  Agreement  constitutes  the  entire  agreement
between  the parties  and supersedes  all prior  agreements and  understandings,
whether written or oral, relating to the subject matter of this Agreement.

     9.4 Amendment.  This Agreement may be amended or modified only by a written
instrument executed by both the Company and the Employee.

     9.5  Governing  Law. This  Agreement  shall be governed by and construed in
accordance  with the laws of the State of  Maryland.  Any action,  suit or other
legal matter arising under or relating to any provision of this Agreement  shall
be commenced  only in a court of the State of Maryland  (or, if  appropriate,  a
federal court located  within  Maryland),  and the Company and the Employee each
consents to the  jurisdiction of such a court. The Company and the Employee each
hereby  irrevocably  waive any right to a trial by jury in any  action,  suit or
other  legal  proceeding  arising  under or relating  to any  provision  of this
Agreement.

                                       6
<PAGE>

     9.6 Successors and Assigns.  This Agreement shall be binding upon and inure
to the benefit of both  parties and their  respective  successors  and  assigns,
including any corporation  with which or into which the Company may be merged or
which  may  succeed  to its  assets or  business,  provided,  however,  that the
obligations  of the  Employee  are  personal and shall not be assigned by him or
her.

     9.7 Waivers.  No delay or omission by the Company in  exercising  any right
under this  Agreement  shall  operate as a waiver of that or any other right.  A
waiver or consent  given by the Company on any one  occasion  shall be effective
only in that instance and shall not be construed as a bar or waiver of any right
on any other occasion.

     9.8  Captions.  The  captions  of the  sections of this  Agreement  are for
convenience of reference only and in no way define, limit or affect the scope or
substance of any section of this Agreement.

     9.9 Severability. In case any provision of this Agreement shall be invalid,
illegal or otherwise unenforceable, the validity, legality and enforceability of
the remaining provisions shall in no way be affected or impaired thereby.

         THE EMPLOYEE ACKNOWLEDGES THAT HE/SHE HAS CAREFULLY READ THIS AGREEMENT
AND UNDERSTANDS AND AGREES TO ALL OF THE PROVISIONS IN THIS AGREEMENT.

         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the day and year set forth above.

                                    ESSEX CORPORATION

                                    By:__________________________________

                                    Title:_______________________________

                                    EMPLOYEE

                                    Signature: __________________________

                                    _____________________________________
                                    Printed Name of Employee

                                       7

<PAGE>

                                   SCHEDULE A

                                Prior Agreements

                                       8


<PAGE>



                                ESSEX CORPORATION

                                 Exhibit 99 (b)


                          REGISTRATION RIGHTS AGREEMENT

<PAGE>

                                ESSEX CORPORATION

                          REGISTRATION RIGHTS AGREEMENT

         This  Agreement  dated as of  September  7, 2000 is entered into by and
among  Essex  Corporation,  a  Virginia  corporation  (the  "Company"),  and the
individuals and entities listed on Exhibit A attached hereto (the "Purchasers").

                                    Recitals

         WHEREAS,  the Company and the Purchasers have entered into a Securities
Purchase Agreement of even date herewith (the "Purchase Agreement"); and

         WHEREAS,  the Company and the Purchasers  desire to provide for certain
arrangements  with respect to the registration of shares of capital stock of the
Company under the Securities Act of 1933;

         NOW,  THEREFORE,  in consideration of the mutual promises and covenants
contained in this Agreement, the parties hereto agree as follows:

1.       Certain Definitions.
         -------------------

         As used in this Agreement, the following terms shall have the following
respective meanings:

                  "Commission" means the Securities and Exchange Commission,  or
any other federal agency at the time administering the Securities Act.

                  "Common Stock" means the common stock of the Company.

                  "Exchange Act" means the  Securities  Exchange Act of 1934, as
amended, or any successor federal statute,  and the rules and regulations of the
Commission  issued  under such Act, as they each may,  from time to time,  be in
effect.

                  "Initiating  Holders"  means  the  Stockholders  initiating  a
request for registration  pursuant to Section 2.1(a) or 2.1(b),  as the case may
be.

                  "Other  Holders"  shall  mean  holders  of  securities  of the
Company  (other than the  Stockholders)  who are entitled,  by contract with the
Company, to have securities included in a Registration Statement.

                  "Prospectus" means the prospectus included in any Registration
Statement,  as amended or supplemented by an amendment or prospectus supplement,
including post-effective  amendments, and all material incorporated by reference
or deemed to be incorporated by reference in such Prospectus.

                  "Registration  Statement" means a registration statement filed
by the Company with the Commission for a public  offering and sale of securities
of the Company (other than a

<PAGE>

registration  statement  on Form S-8 or Form S-4,  or their  successors,  or any
other form for a similar limited purpose, or any registration statement covering
only  securities  proposed to be issued in exchange for  securities or assets of
another corporation).

                  "Registration   Expenses"  means  the  expenses  described  in
Section 2.4.

                  "Registrable  Shares"  means (i) the  shares  of Common  Stock
issued or issuable  upon  conversion  of the  Shares,  (ii) the shares of Common
Stock issued or issuable  upon exercise of the Warrants  issued  pursuant to the
Purchase  Agreement and (iii) any other shares of Common Stock issued in respect
of such shares  (because of stock splits,  stock  dividends,  reclassifications,
recapitalizations,  or similar events); provided, however, that shares of Common
Stock which are Registrable Shares shall cease to be Registrable Shares upon (i)
any sale pursuant to a  Registration  Statement or Rule 144 under the Securities
Act or (ii) any sale in any  manner to a person or  entity  which,  by virtue of
Section 3 of this  Agreement,  is not  entitled  to the rights  provided by this
Agreement.  Wherever reference is made in this Agreement to a request or consent
of holders of a certain  percentage of Registrable  Shares, the determination of
such percentage shall include shares of Common Stock issuable upon conversion of
the Shares even if such conversion has not been effected.

                  "Securities Act" means the Securities Act of 1933, as amended,
or  any  successor  federal  statute,  and  the  rules  and  regulations  of the
Commission  issued  under such Act, as they each may,  from time to time,  be in
effect.

                  "Selling Stockholder" means any Stockholder owning Registrable
Shares included in a Registration Statement.

                  "Shares"  shall  mean  the  Preferred  Stock  sold  under  the
Purchase Agreement.

                  "Stockholders"   means  the  Purchasers  and  any  persons  or
entities to whom the rights granted under this Agreement are  transferred by any
Purchasers, their successors or assigns pursuant to Section 3 hereof.

2.       Registration Rights

2.1      Required Registrations.
         ----------------------

     (a) At any time after June 30, 2001, a Stockholder or Stockholders  holding
in the aggregate at least 51% of the  Registrable  Shares then  outstanding  may
request,  in writing,  that the Company effect the  registration  on Form S-1 or
Form S-2 (or any successor form) of Registrable Shares owned by such Stockholder
or Stockholders  having an aggregate value of at least $1,000,000  (based on the
then current market price or fair value).

     (b) At any time after the Company  becomes  eligible to file a Registration
Statement on Form S-3 (or any successor form relating to secondary offerings), a
Stockholder  or  Stockholders  holding  in the  aggregate  at  least  51% of the
Registrable  Shares then outstanding may request,  in writing,  that the Company
effect the  registration  on Form S-3 (or such successor  form),  of Registrable
Shares  having  an  aggregate  value of at least  $1,000,000  (based on the then
current public market price).

                                       2
<PAGE>

     (c) Upon receipt of any request for  registration  pursuant to this Section
2, the Company shall promptly give written notice of such proposed  registration
to all other  Stockholders.  Such  Stockholders  shall have the right, by giving
written  notice to the  Company  within 30 days after the Company  provides  its
notice, to elect to have included in such registration such of their Registrable
Shares as such  Stockholders may request in such notice of election,  subject in
the case of an underwritten offering to the approval of the managing underwriter
as  provided  in  Section  2.1(d)  below.  Thereupon,   the  Company  shall,  as
expeditiously as possible, use its best efforts to effect the registration on an
appropriate  registration  form of all Registrable  Shares which the Company has
been  requested  to so  register  (provided,  however,  that  in the  case  of a
registration  requested under Section 2.1(b), the Company will only be obligated
to effect such registration on Form S-3 (or any successor form)).

     (d) If the Initiating  Holders intend to distribute the Registrable  Shares
covered by their request by means of an  underwriting,  they shall so advise the
Company as a part of their  request made  pursuant to Section  2.1(a) or (b), as
the case may be, and the Company shall include such  information  in its written
notice  referred to in Section  2.1(c).  The right of any other  Stockholder  to
include its Registrable  Shares in such registration  pursuant to Section 2.1(a)
or (b), as the case may be, shall be conditioned  upon such other  Stockholder's
participation  in such  underwriting  on the  terms  set  forth  herein.  If the
managing underwriter  determines that the marketing factors require a limitation
of the number of shares to be underwritten,  the number of Registrable Shares to
be included in a  Registration  Statement  filed  pursuant to this  Section 2.1,
shall be  reduced  pro  rata  among  the  requesting  Stockholders  based on the
quotient of (1) the total Registrable  Shares to be included in the Registration
Statement,  divided by (2) the total number of Registrable Shares that requested
registration.

     (e) The  Initiating  Holders  shall have the right to select  the  managing
underwriter(s)  for any  underwritten  offering  requested  pursuant  to Section
2.1(a) or (b),  subject to the approval of the Company,  which approval will not
be unreasonably withheld.

     (f) The Company shall not be required to effect more than two registrations
pursuant to Section  2.1(a).  In addition,  the Company shall not be required to
effect any  registration on Form S-3 or any successor form relating to secondary
offerings  more than  once in any  twelve-month  period.  For  purposes  of this
Section 2.1(f), a Registration Statement shall not be counted until such time as
such  Registration  Statement  has been  declared  effective  by the  Commission
(unless the  Initiating  Holders  withdraw  their request for such  registration
(other than as a result of  information  concerning  the  business or  financial
condition of the Company which is made known to the Stockholders  after the date
on which such  registration was requested) and elect not to pay the Registration
Expenses therefor pursuant to Section 2.4). For purposes of this Section 2.1(f),
a Registration  Statement shall not be counted if, as a result of an exercise of
the  underwriter's  cut-back  provisions,  less than 50% of the total  number of
Registrable  Shares  that  Stockholders  have  requested  to be included in such
Registration Statement are so included.

     (g) If at the  time  of any  request  to  register  Registrable  Shares  by
Initiating  Holders  pursuant to this Section 2.1, the Company is engaged or has
plans to engage in a  registered  public  offering  or is  engaged  in any other
activity  which,  in the good  faith  determination  of the  Company's  Board of
Directors,  would be adversely affected by the

                                       3
<PAGE>

requested  registration,  then the  Company  may at its option  direct that such
request be  delayed  for a period not in excess of 90 days from the date of such
request,  such right to delay a request to be  exercised by the Company not more
than once in any 12-month period.

2.2      Incidental Registration.
         -----------------------

     (a) Whenever the Company  proposes to file a Registration  Statement (other
than a  Registration  Statement  filed  pursuant to Section 2.1) at any time and
from time to time,  it will,  prior to such filing,  give written  notice to all
Stockholders  of its intention to do so;  provided,  that no such notice need be
given if no  Registrable  Shares  are to be  included  therein  as a result of a
determination of the managing  underwriter  pursuant to Section 2.2(b). Upon the
written request of a Stockholder or Stockholders  given within 20 days after the
Company  provides such notice (which request shall state the intended  method of
disposition of such Registrable  Shares), the Company shall use its best efforts
to cause all  Registrable  Shares  which the Company has been  requested by such
Stockholder or  Stockholders  to register to be registered  under the Securities
Act to the  extent  necessary  to  permit  their  sale or other  disposition  in
accordance with the intended methods of distribution specified in the request of
such Stockholder or Stockholders; provided that the Company shall have the right
to postpone or withdraw any registration  effected  pursuant to this Section 2.2
without obligation to any Stockholder.

     (b) If the  registration  for which the Company  gives  notice  pursuant to
Section 2.2(a) is a registered  public offering  involving an underwriting,  the
Company shall so advise the  Stockholders  as a part of the written notice given
pursuant to Section  2.2(a).  In such  event,  the right of any  Stockholder  to
include  its  Registrable  Shares in such  registration  pursuant to Section 2.2
shall be conditioned upon such Stockholder's  participation in such underwriting
on the terms set forth herein.  All  Stockholders  proposing to distribute their
securities through such underwriting shall enter into an underwriting  agreement
in  customary  form  with  the  underwriter  or  underwriters  selected  for the
underwriting by the Company, provided that such underwriting agreement shall not
provide  for  indemnification  or  contribution   obligations  on  the  part  of
Stockholders  materially  greater  than  the  obligations  of  the  Stockholders
pursuant to Section  2.5.  Notwithstanding  any other  provision of this Section
2.2, if the managing  underwriter  determines  that the  inclusion of all shares
requested to be registered would adversely affect the offering,  the Company may
limit the number of Registrable  Shares to be included in the  registration  and
underwriting.  The  Company  shall so advise all holders of  Registrable  Shares
requesting  registration,  and the  number of  shares  that are  entitled  to be
included  in  the  registration  and  underwriting  shall  be  allocated  in the
following  manner.  The  securities  of the Company  held by holders  other than
Stockholders  and Other  Holders shall be excluded  from such  registration  and
underwriting to the extent deemed advisable by the managing underwriter, and, if
a further  limitation on the number of shares is required,  the number of shares
that may be included in such  registration and  underwriting  shall be allocated
among all Stockholders and Other Holders requesting  registration in proportion,
as nearly as practicable, to the respective number of shares of Common Stock (on
an as-converted  basis) which they held at the time the Company gives the notice
specified in Section  2.2(a),  provided  that the number of  Registrable  Shares
permitted  to be  included  therein  shall in any  event be at least  50% of the
securities  included  therein  that are not being  sold for the  account  of the
Company (based on aggregate  market values).  If any Stockholder or Other Holder
would thus be entitled to include more

                                       4
<PAGE>

securities  than such holder  requested  to be  registered,  the excess shall be
allocated among other requesting  Stockholders and Other Holders pro rata in the
manner described in the preceding sentence.  If any holder of Registrable Shares
or any officer,  director or Other Holder  disapproves  of the terms of any such
underwriting,  such person may elect to withdraw  therefrom by written notice to
the  Company,  and any  Registrable  Shares  or  other  securities  excluded  or
withdrawn from such underwriting shall be withdrawn from such registration.

2.3      Registration Procedures.
         -----------------------

     (a) If and  whenever  the  Company is required  by the  provisions  of this
Agreement to use its best efforts to effect the  registration of any Registrable
Shares under the Securities Act, the Company shall:

          (i) file with the Commission a Registration  Statement with respect to
     such Registrable Shares and use its best efforts to cause that Registration
     Statement to become effective as soon as possible;

          (ii) as expeditiously as possible prepare and file with the Commission
     any  amendments  and  supplements  to the  Registration  Statement  and the
     prospectus  included in the  Registration  Statement as may be necessary to
     comply with the  provisions of the Securities Act (including the anti-fraud
     provisions  thereof) and to keep the Registration  Statement  effective for
     six months from the  effective  date or such lesser  period  until all such
     Registrable Shares are sold;

          (iii) as expeditiously as possible furnish to each Selling Stockholder
     such  reasonable  numbers  of  copies  of  the  Prospectus,  including  any
     preliminary  Prospectus,   in  conformity  with  the  requirements  of  the
     Securities  Act, and such other  documents as such Selling  Stockholder may
     reasonably  request  in  order  to  facilitate  the  public  sale or  other
     disposition of the Registrable Shares owned by such Selling Stockholder;

          (iv) as  expeditiously as possible use its best efforts to register or
     qualify the Registrable Shares covered by the Registration  Statement under
     the securities or Blue Sky laws of such states as the Selling  Stockholders
     shall reasonably request, and do any and all other acts and things that may
     be necessary or desirable to enable the Selling  Stockholders to consummate
     the public  sale or other  disposition  in such  states of the  Registrable
     Shares  owned  by the  Selling  Stockholder;  provided,  however,  that the
     Company shall not be required in  connection  with this  paragraph  (iv) to
     qualify as a foreign corporation or execute a general consent to service of
     process in any jurisdiction;

          (v) as expeditiously as possible, cause all such Registrable Shares to
     be listed on each  securities  exchange or  automated  quotation  system on
     which similar securities issued by the Company are then listed;

          (vi)  promptly  provide a transfer  agent and  registrar  for all such
     Registrable  Shares not later than the effective date of such  registration
     statement;

          (vii)   promptly  make   available  for   inspection  by  the  Selling
     Stockholders,  any managing  underwriter  participating  in any disposition
     pursuant to such

                                       5
<PAGE>

     Registration  Statement,  and any  attorney  or  accountant  or other agent
     retained by any such  underwriter or selected by the Selling  Stockholders,
     all  financial  and  other  records,   pertinent  corporate  documents  and
     properties  of the Company  and cause the  Company's  officers,  directors,
     employees and independent  accountants to supply all information reasonably
     requested by any such seller, underwriter, attorney, accountant or agent in
     connection with such Registration Statement;

          (viii) as expeditiously as possible,  notify each Selling Stockholder,
     promptly  after it shall  receive  notice  thereof,  of the time  when such
     Registration  Statement  has  become  effective  or  a  supplement  to  any
     Prospectus  forming a part of such  Registration  Statement has been filed;
     and

          (ix) as expeditiously as possible  following the effectiveness of such
     Registration  Statement,  notify each seller of such Registrable  Shares of
     any request by the  Commission  for the amending or  supplementing  of such
     Registration Statement or Prospectus.

     (b) If the Company has delivered a Prospectus  to the Selling  Stockholders
and  after  having  done  so the  Prospectus  is  amended  to  comply  with  the
requirements  of the  Securities  Act,  the Company  shall  promptly  notify the
Selling   Stockholders  and,  if  requested,   the  Selling  Stockholders  shall
immediately   cease  making  offers  of   Registrable   Shares  and  return  all
Prospectuses  to the Company.  The Company  shall  promptly  provide the Selling
Stockholders  with revised  Prospectuses  and,  following receipt of the revised
Prospectuses,  the Selling Stockholders shall be free to resume making offers of
the Registrable Shares.

     (c) In the event that,  in the judgment of the Company,  it is advisable to
suspend use of a Prospectus included in a Registration  Statement due to pending
material  developments or other events that have not yet been publicly disclosed
and as to which the Company  believes public  disclosure would be detrimental to
the Company,  the Company shall notify all Selling  Stockholders to such effect,
and,  upon  receipt  of  such  notice,   each  such  Selling  Stockholder  shall
immediately  discontinue  any  sales  of  Registrable  Shares  pursuant  to such
Registration  Statement until such Selling  Stockholder has received copies of a
supplemented or amended Prospectus or until such Selling  Stockholder is advised
in writing by the Company that the then current  Prospectus  may be used and has
received copies of any additional or supplemental  filings that are incorporated
or deemed incorporated by reference in such Prospectus.

2.4 Allocation of Expenses.  The Company will pay all Registration  Expenses for
all  registrations  under  this  Agreement;   provided,   however,   that  if  a
registration  under  Section 2.1 is withdrawn  at the request of the  Initiating
Holders  (other  than as a result of  information  concerning  the  business  or
financial condition of the Company which is made known to the Stockholders after
the date on which such registration was requested) and if the Initiating Holders
elect not to have such  registration  counted as a registration  requested under
Section 2.1, the requesting  Stockholders shall pay the Registration Expenses of
such  registration  pro rata in accordance with the number of their  Registrable
Shares  included in such  registration.  For purposes of this Section,  the term
"Registration  Expenses"  shall mean all  expenses  incurred  by the  Company in
complying with this Agreement,  including,  without limitation, all registration

                                       6
<PAGE>

and filing fees, exchange listing fees, printing expenses,  fees and expenses of
counsel for the Company and the fees and expenses of one counsel selected by the
Selling Stockholders to represent the Selling Stockholders,  state Blue Sky fees
and expenses,  and the expense of any special audits  incident to or required by
any such registration, but excluding underwriting discounts, selling commissions
and the fees and expenses of Selling  Stockholders'  own counsel (other than the
counsel selected to represent all Selling Stockholders).

2.5      Indemnification and Contribution.
         --------------------------------

     (a) In the event of any registration of any of the Registrable Shares under
the  Securities Act pursuant to this  Agreement,  the Company will indemnify and
hold harmless each Selling  Stockholder,  each  underwriter of such  Registrable
Shares, and each other person, if any, who controls such Selling  Stockholder or
underwriter within the meaning of the Securities Act or the Exchange Act against
any losses,  claims,  damages or  liabilities,  joint or several,  to which such
Selling Stockholder,  underwriter or controlling person may become subject under
the  Securities  Act, the Exchange  Act,  state  securities  or Blue Sky laws or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect  thereof) arise out of or are based upon any untrue statement or alleged
untrue  statement of any material fact contained in any  Registration  Statement
under which such  Registrable  Shares were registered  under the Securities Act,
any preliminary  prospectus or final  prospectus  contained in the  Registration
Statement,  or any amendment or supplement to such  Registration  Statement,  or
arise out of or are based  upon the  omission  or  alleged  omission  to state a
material fact required to be stated  therein or necessary to make the statements
therein not misleading; and the Company will reimburse such Selling Stockholder,
underwriter and each such controlling person for any legal or any other expenses
reasonably  incurred by such Selling  Stockholder,  underwriter  or  controlling
person in  connection  with  investigating  or defending  any such loss,  claim,
damage,  liability or action;  provided,  however,  that the Company will not be
liable in any such  case to the  extent  that any such  loss,  claim,  damage or
liability  arises out of or is based upon any untrue  statement or omission made
in such Registration  Statement,  preliminary  prospectus or prospectus,  or any
such  amendment  or  supplement,   in  reliance  upon  and  in  conformity  with
information  furnished  to the  Company,  in  writing,  by or on  behalf of such
Selling  Stockholder,  underwriter or controlling person specifically for use in
the preparation thereof.

     (b) In the event of any registration of any of the Registrable Shares under
the  Securities  Act  pursuant  to this  Agreement,  each  Selling  Stockholder,
severally and not jointly, will indemnify and hold harmless the Company, each of
its directors  and officers and each  underwriter  (if any) and each person,  if
any, who controls the Company or any such underwriter  within the meaning of the
Securities  Act or the  Exchange  Act,  against any losses,  claims,  damages or
liabilities,  joint or  several,  to  which  the  Company,  such  directors  and
officers,  underwriter  or  controlling  person  may  become  subject  under the
Securities  Act,  Exchange Act, state  securities or Blue Sky laws or otherwise,
insofar as such losses,  claims,  damages or liabilities  (or actions in respect
thereof)  arise out of or are based upon any untrue  statement or alleged untrue
statement of a material fact contained in any Registration Statement under which
such   Registrable   Shares  were  registered  under  the  Securities  Act,  any
preliminary  prospectus  or  final  prospectus  contained  in  the  Registration
Statement,  or any  amendment or supplement to the  Registration  Statement,  or
arise out of or are based  upon any  omission  or  alleged  omission  to state a
material fact required to be stated  therein or necessary to make the

                                       7
<PAGE>

statements  therein not  misleading,  if the  statement  or omission was made in
reliance  upon and in  conformity  with  information  relating  to such  Selling
Stockholder  furnished in writing to the Company by or on behalf of such Selling
Stockholder  specifically  for use in connection  with the  preparation  of such
Registration Statement,  prospectus, amendment or supplement; provided, however,
that the obligations of a Selling  Stockholder  hereunder shall be limited to an
amount  equal to the net  proceeds to such Selling  Stockholder  of  Registrable
Shares sold in connection with such registration.

     (c)  Each  party  entitled  to  indemnification  under  this  Section  (the
"Indemnified  Party")  shall  give  notice  to the  party  required  to  provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the  Indemnifying  Party to assume  the  defense of any such claim or any
litigation  resulting  therefrom;  provided,  that counsel for the  Indemnifying
Party,  who shall  conduct  the  defense of such claim or  litigation,  shall be
approved by the  Indemnified  Party (whose  approval  shall not be  unreasonably
withheld); and, provided,  further, that the failure of any Indemnified Party to
give notice as provided herein shall not relieve the  Indemnifying  Party of its
obligations under this Section except to the extent that the Indemnifying  Party
is adversely affected by such failure.  The Indemnified Party may participate in
such defense at such party's expense;  provided,  however, that the Indemnifying
Party shall pay such expense if  representation of such Indemnified Party by the
counsel retained by the Indemnifying  Party would be inappropriate due to actual
or potential  differing  interests  between the Indemnified  Party and any other
party  represented by such counsel in such proceeding;  provided further that in
no event shall the  Indemnifying  Party be required to pay the  expenses of more
than one law firm per  jurisdiction  as counsel for the Indemnified  Party.  The
Indemnifying Party also shall be responsible for the expenses of such defense if
the  Indemnifying  Party does not elect to assume such defense.  No Indemnifying
Party,  in the defense of any such claim or  litigation  shall,  except with the
consent of each  Indemnified  Party,  consent to entry of any  judgment or enter
into any settlement which does not include as an unconditional  term thereof the
giving by the claimant or plaintiff to such Indemnified  Party of a release from
all liability in respect of such claim or litigation,  and no Indemnified  Party
shall  consent  to entry of any  judgment  or settle  such  claim or  litigation
without the prior written consent of the Indemnifying Party, which consent shall
not be unreasonably withheld.

     (d)  In  order  to  provide  for  just  and   equitable   contribution   in
circumstances in which the  indemnification  provided for in this Section 2.5 is
due in accordance with its terms but for any reason is held to be unavailable to
an Indemnified Party in respect to any losses,  claims,  damages and liabilities
referred to herein,  then the Indemnifying  Party shall, in lieu of indemnifying
such  Indemnified  Party,  contribute  to the  amount  paid or  payable  by such
Indemnified Party as a result of such losses,  claims, damages or liabilities to
which such party may be subject in such  proportion as is appropriate to reflect
the relative  fault of the Company on the one hand and the Selling  Stockholders
on the other in connection  with the  statements or omissions  which resulted in
such  losses,  claims,  damages or  liabilities,  as well as any other  relevant
equitable  considerations.  The  relative  fault of the  Company and the Selling
Stockholders  shall be determined  by reference to, among other things,  whether
the untrue or alleged  untrue  statement of material fact related to information
supplied by the Company or the Selling  Stockholders  and the parties'  relative
intent,  knowledge,  access to information and opportunity to correct or prevent
such statement or omission.  The Company and the Selling

                                       8
<PAGE>

Stockholders  agree  that it would  not be just and  equitable  if  contribution
pursuant to this Section 2.5 were  determined  by pro rata  allocation or by any
other  method  of  allocation  which  does not  take  account  of the  equitable
considerations  referred  to  above.  Notwithstanding  the  provisions  of  this
paragraph of Section 2.5,  (a) in no case shall any one Selling  Stockholder  be
liable or responsible  for any amount in excess of the net proceeds  received by
such Selling  Stockholder  from the offering of  Registrable  Shares and (b) the
Company  shall be  liable  and  responsible  for any  amount  in  excess of such
proceeds;   provided,   however,   that   no   person   guilty   of   fraudulent
misrepresentation  (within the meaning of Section 11(f) of the  Securities  Act)
shall be  entitled  to  contribution  from any person who was not guilty of such
fraudulent misrepresentation.  Any party entitled to contribution will, promptly
after  receipt  of notice of  commencement  of any  action,  suit or  proceeding
against  such  party in respect  of which a claim for  contribution  may be made
against  another  party or parties  under  this  Section,  notify  such party or
parties from whom contribution may be sought, but the omission so to notify such
party or parties  from whom  contribution  may be sought  shall not relieve such
party from any other  obligation  it or they may have  thereunder  or  otherwise
under this Section.  No party shall be liable for  contribution  with respect to
any action, suit, proceeding or claim settled without its prior written consent,
which consent shall not be unreasonably withheld.

2.6 Other  Matters with  Respect to  Underwritten  Offerings.  In the event that
Registrable  Shares  are  sold  pursuant  to  a  Registration  Statement  in  an
underwritten  offering  pursuant to Section 2.1, the Company agrees to (a) enter
into  an  underwriting   agreement  containing  customary   representations  and
warranties  with  respect to the  business  and  operations  of the  Company and
customary  covenants and  agreements  to be performed by the Company,  including
without limitation  customary  provisions with respect to indemnification by the
Company of the underwriters of such offering;  (b) use its best efforts to cause
its legal counsel to render customary  opinions to the underwriters with respect
to the  Registration  Statement;  and (c) use its  best  efforts  to  cause  its
independent  public accounting firm to issue customary "cold comfort letters" to
the underwriters with respect to the Registration Statement.

2.7  Information by Holder.  Each holder of Registrable  Shares  included in any
registration shall furnish to the Company such information regarding such holder
and the  distribution  proposed by such  holder as the  Company  may  reasonably
request in writing and as shall be required in connection with any registration,
qualification or compliance referred to in this Agreement.

2.8 "Stand-Off"  Agreement;  Confidentiality  of Notices.  Each Stockholder,  if
requested by the Company and the managing  underwriter of an underwritten public
offering by the Company of Common Stock, shall not sell or otherwise transfer or
dispose of any  Registrable  Shares or other  securities  of the Company held by
such  Stockholder  for a period of 90 days  following  the  effective  date of a
Registration  Statement;  provided,  that all  stockholders  of the Company then
holding at least 5% of the outstanding  Common Stock (on an as-converted  basis)
and all officers and directors of the Company enter into similar agreements.

         The Company may impose  stop-transfer  instructions with respect to the
Registrable  Shares or other  securities  subject to the  foregoing  restriction
until the end of such 90-day period.

                                       9
<PAGE>

         Any Stockholder receiving any written notice from the Company regarding
the Company's  plans to file a  Registration  Statement  shall treat such notice
confidentially  and shall not disclose such information to any person other than
as necessary to exercise its rights under this Agreement.

2.9  Limitations  on  Subsequent  Registration  Rights.  The Company  shall not,
without the prior written  consent of  Stockholders  holding at least 51% of the
Registrable  Shares  then held by all  Stockholders,  enter  into any  agreement
(other  than  this  Agreement)  with any  holder  or  prospective  holder of any
securities of the Company which grant such holder or  prospective  holder rights
to include securities of the Company in any Registration  Statement,  unless (a)
such rights to include securities in a registration  initiated by the Company or
by Stockholders  are not more favorable than the rights granted to Other Holders
under Section 2.2 of this Agreement, and (b) no rights are granted to initiate a
registration,  other than registration  pursuant to a registration  statement on
Form S-3 (or its  successor)  in which  Stockholders  are  entitled  to  include
Registrable  Shares on a pro rata basis with such holders based on the number of
shares of Common Stock (on an as-converted basis) owned by Stockholders and such
holders.

2.10 Rule 144 Requirements. After the earliest of (i) the closing of the sale of
securities  of the  Company  pursuant  to a  Registration  Statement,  (ii)  the
registration  by the Company of a class of  securities  under  Section 12 of the
Exchange  Act, or (iii) the  issuance  by the  Company of an  offering  circular
pursuant to Regulation A under the Securities Act, the Company agrees to:

     (a) make and keep current public  information about the Company  available,
as those terms are understood and defined in Rule 144;

     (b) use its best efforts to file with the Commission in a timely manner all
reports and other documents required of the Company under the Securities Act and
the  Exchange  Act (at any time  after it has become  subject to such  reporting
requirements); and

     (c) furnish to any holder of Registrable  Shares upon request (i) a written
statement by the Company as to its compliance with the reporting requirements of
Rule 144 and of the  Securities  Act and the  Exchange Act (at any time after it
has become  subject  to such  reporting  requirements),  (ii) a copy of the most
recent annual or quarterly  report of the Company,  and (iii) such other reports
and  documents  of the  Company as such holder may  reasonably  request to avail
itself of any similar rule or regulation of the  Commission  allowing it to sell
any such securities without registration.

2.11  Termination.  All of the  Company's  obligations  to register  Registrable
Shares under Sections 2.1 and 2.2 of this Agreement  shall  terminate five years
after the date of this Agreement.

3. Transfers of Rights.  This Agreement,  and the rights and obligations of each
Purchaser hereunder,  may be assigned by such Purchaser to any partner,  member,
stockholder or affiliate of such Purchaser,  and such transferee shall be deemed
a  "Purchaser"  for purposes of this  Agreement;  provided  that the  transferee
provides  written notice of such assignment to the Company and agrees in writing
to be bound hereby.

                                       10
<PAGE>

4.       General.
         -------

     (a) Severability.  The invalidity or  unenforceability  of any provision of
this  Agreement  shall not affect the  validity or  enforceability  of any other
provision of this Agreement.

     (b) Specific  Performance.  In addition to any and all other  remedies that
may be  available  at law in the  event of any  breach of this  Agreement,  each
Purchaser  shall be entitled  to  specific  performance  of the  agreements  and
obligations  of the  Company  hereunder  and to such other  injunctive  or other
equitable relief as may be granted by a court of competent jurisdiction.

     (c)  Governing  Law. This  Agreement  shall be governed by and construed in
accordance  with the  internal  laws of the  Commonwealth  of Virginia  (without
reference to the conflicts of law provisions thereof).

     (d) Notices.  All notices,  requests,  consents,  and other  communications
under this Agreement  shall be in writing and shall be deemed  delivered (i) two
business days after being sent by registered or certified  mail,  return receipt
requested,  postage  prepaid  or (ii) one  business  day after  being sent via a
reputable  nationwide  overnight courier service  guaranteeing next business day
delivery, in each case to the intended recipient as set forth below:

         If to the Company, at 9150 Guilford Road, Columbia, MD 21046,Attention:
President,  or at such other address or addresses as may have been  furnished in
writing by the Company to the  Purchasers,  with a copy to  Whiteford,  Taylor &
Preston, L.L.P., 7 Saint Paul Street, Baltimore, Maryland 21202-1626, Attention:
D. Scott Freed; or

         If to a Purchaser,  at his or its address set forth on Exhibit A, or at
such other  address or  addresses  as may have been  furnished to the Company in
writing  by such  Purchaser,  with a copy to Hale and Dorr  LLP,  11951  Freedom
Drive, Reston, VA 20190, Attention: William F. Winslow.

         Any party may give any notice, request,  consent or other communication
under this  Agreement  using any other  means  (including,  without  limitation,
personal delivery,  messenger service,  telecopy, first class mail or electronic
mail),  but no such notice,  request,  consent or other  communication  shall be
deemed to have been duly given  unless and until it is actually  received by the
party for whom it is  intended.  Any  party  may  change  the  address  to which
notices,  requests,  consents  or  other  communications  hereunder  are  to  be
delivered  by giving  the other  parties  notice in the manner set forth in this
Section.

     (e) Complete Agreement. This Agreement constitutes the entire agreement and
understanding  of the parties  hereto with respect to the subject  matter hereof
and supersedes all prior agreements and understandings  relating to such subject
matter.

     (f)  Amendments  and Waivers.  Any term of this Agreement may be amended or
terminated  and the  observance of any term of this Agreement may be waived with
respect to all parties to this  Agreement  (either  generally or in a particular
instance and either retroactively or prospectively), with the written consent of
the Company and the  holders of at

                                       11
<PAGE>

least  51%  of  the  Registrable   Shares  held  by  all  of  the  Stockholders.
Notwithstanding the foregoing, this Agreement may be amended or terminated,  and
any right  hereunder may be waived with respect to all parties to this Agreement
with the  consent of the holders of less than all  Registrable  Shares only in a
manner  which  applies  to all  such  holders  in the  same  fashion.  Any  such
amendment,  termination or waiver  effected in accordance with this Section 4(f)
shall be binding on all parties hereto, even if they do not execute such consent
and the Company. No waivers of or exceptions to any term, condition or provision
of this  Agreement,  in any one or more  instances,  shall be  deemed  to be, or
construed  as, a further or  continuing  waiver of any such term,  condition  or
provision.

     (g) Pronouns.  Whenever the context may require,  any pronouns used in this
Agreement shall include the corresponding  masculine,  feminine or neuter forms,
and the singular form of nouns and pronouns  shall include the plural,  and vice
versa.

     (h) Counterparts;  Facsimile Signatures.  This Agreement may be executed in
any number of counterparts, each of which shall be deemed to be an original, and
all of which together shall constitute one and the same document. This Agreement
may be executed by facsimile signatures.

     (i) Section  Headings.  The section headings are for the convenience of the
parties and in no way alter,  modify,  amend,  limit or restrict the contractual
obligations of the parties.

                                       12

<PAGE>


         Executed as of the date first written above.

                                 COMPANY:

                                ESSEX CORPORATION

                                 By:  /s/ Leonard E. Moodispaw
                                      -----------------------------
                                 Name:  Leonard E. Moodispaw
                                       -----------------------
                                 Title:  President and CEO
                                        ----------------------
                                   PURCHASERS:

                                 GEF OPTICAL INVESTMENT COMPANY, LLC


                                 By:  /s/ H. Jeffrey Leonard
                                      ----------------------
                                      Name:   H. Jeffrey Leonard
                                      Title:  President

                                 NETWORKING VENTURES, L.L.C.


                                 By:  /s/ John G. Hannon
                                      ------------------
                                       Name:  John G. Hannon
                                       Title: Partner


                                       13

<PAGE>



                                                                       Exhibit A

                                   Purchasers

Name and Address
----------------
GEF Optical Investment Company, LLC
1225 Eye Street, N.W., Suite 900
Washington, DC 20005

Networking Ventures, L.L.C.
8970 Route 108
Suite B
Columbia, MD 21045


                                      A-1

<PAGE>




                                ESSEX CORPORATION


                                 Exhibit 99 (c)


                         COMMON STOCK PURCHASE WARRANTS




<PAGE>




           THIS WARRANT AND THE SHARES OF COMMON STOCK ISSUED UPON ITS
                   EXERCISE ARE SUBJECT TO THE RESTRICTIONS ON
                 TRANSFER SET FORTH IN SECTION 4 OF THIS WARRANT

Warrant No. 1                                      Number of Shares: 1,000,000
                                                       (subject to adjustment)
Date of Issuance: September 12, 2000

                                ESSEX CORPORATION

                          Common Stock Purchase Warrant

                         (Void after September 12, 2005)

         Essex Corporation,  a Virginia  corporation (the "Company"),  for value
received,  hereby  certifies that GEF Optical  Investment  Company,  LLC, or its
registered assigns (the "Registered Holder"), is entitled,  subject to the terms
and  conditions  set forth below,  to purchase from the Company,  at any time or
from time to time on or after the date of  issuance  and on or before  5:00 p.m.
(Eastern time) on September 12, 2005,  1,000,000  shares of Common Stock, of the
Company,  at a purchase price of $.001 per share.  The shares  purchasable  upon
exercise of this  Warrant,  and the purchase  price per share,  each as adjusted
from time to time pursuant to the  provisions of this Warrant,  are  hereinafter
referred to as the "Warrant Shares" and the "Purchase Price," respectively.

1.       Exercise.
         --------

     (a) Subject to subsection 1(c) below,  this Warrant may be exercised by the
Registered  Holder, in whole or in part, by surrendering this Warrant,  with the
purchase  form  appended  hereto as Exhibit I duly  executed  by the  Registered
Holder or by the Registered Holder's duly authorized attorney,  at the principal
office of the  Company,  or at such other  office or agency as the  Company  may
designate, accompanied by payment in full, in lawful money of the United States,
of the  Purchase  Price  payable in  respect  of the  number of  Warrant  Shares
purchased upon such exercise.

     (b) Subject to subsection  1(c) below,  the  Registered  Holder may, at its
option,  elect to pay some or all of the Purchase Price payable upon an exercise
of this  Warrant by  canceling a portion of this  Warrant  exercisable  for such
number of Warrant  Shares as is  determined  by dividing (i) the total  Purchase
Price payable in respect of the number of Warrant  Shares being  purchased  upon
such  exercise by (ii) the excess of the Fair  Market  Value per share of Common
Stock  (as  defined  below)  averaged  over the five  trading  days  immediately
preceding  the  Exercise  Date (as  defined in  subsection  1(d) below) over the
Purchase  Price per share.  If the  Registered  Holder  wishes to exercise  this
Warrant pursuant to this method of payment with respect to the maximum number of
Warrant Shares purchasable  pursuant to this method,  then the number of Warrant
Shares so  purchasable  shall be equal to the total  number of  Warrant  Shares,
minus the product obtained by multiplying (x) the total number of Warrant Shares
by (y) a fraction,  the numerator of which shall be the Purchase Price per share
and the  denominator of which shall be the Fair Market Value per share of Common
Stock  averaged  over the five trading days

<PAGE>

immediately  preceding  the  Exercise  Date.  The Fair Market Value per share of
Common Stock shall be determined as follows:

     (i) If the Common Stock is listed on a national securities exchange, Nasdaq
Stock Market, OTC Bulletin Board or another nationally recognized trading system
as of the Exercise  Date,  the Fair Market Value per share of Common Stock shall
be deemed to be the average of the high and low  reported  sale prices per share
of Common  Stock  (provided  that if no such price is reported on such day,  the
Fair  Market  Value per share of Common  Stock shall be  determined  pursuant to
clause (ii)).

     (ii) If the Common Stock is not listed on a national  securities  exchange,
Nasdaq Stock Market, OTC Bulletin Board or another nationally recognized trading
system as of the Exercise  Date, the Fair Market Value per share of Common Stock
shall be  deemed  to be the  amount  most  recently  determined  by the Board of
Directors  to  represent  the fair  market  value per share of the Common  Stock
(including  without  limitation a determination  for purposes of granting Common
Stock  options or issuing  Common  Stock under an employee  benefit  plan of the
Company); and, upon request of the Registered Holder, the Board of Directors (or
a  representative  thereof) shall promptly  notify the Registered  Holder of the
Fair Market Value per share of Common Stock.  Notwithstanding the foregoing,  if
the Board of Directors has not made such a determination  within the three-month
period prior to the Exercise Date,  then (A) the Board of Directors shall make a
determination  of the Fair Market  Value per share of the Common Stock within 15
days of a request by the  Registered  Holder that it do so, and (B) the exercise
of this Warrant  pursuant to this  subsection  1(b) shall be delayed  until such
determination is made.

     (c) This Warrant shall be exercisable  only to the extent set forth in this
subsection 1(c):

     (i) If the Fair Market Value of the Common Stock (determined as provided in
subsection  1(b)(i) above),  for five  consecutive  trading days, with aggregate
volume  on the  market  on which  the  Common  Stock  is  traded  for such  five
consecutive  trading  days of at least  100,000  shares,  exceeds the amount set
forth below under the heading  "Share Price"  (adjusted for stock splits,  stock
dividends  and similar  recapitalizations),  this Warrant shall  immediately  be
exercisable  to purchase the number of Warrant  Shares set forth below under the
heading "Cumulative Shares Exercisable:"

<TABLE>
<CAPTION>

          Share Price                    Cumulative Shares Exercisable
          -----------                    -----------------------------
<S>       <C>                              <C>
          $10                              250,000
          $12                              375,000
          $14                              500,000
          $16                              625,000
          $18                              750,000
          $20                            1,000,000
</TABLE>

                                       2

<PAGE>

     (ii) In addition,  this Warrant shall be exercisable to purchase all of the
Warrant Shares covered by this Warrant immediately prior to the closing of (A) a
sale of securities by the Company by means of a private placement or pursuant to
a registration  statement,  which results in gross proceeds to the Company of at
least $10,000,000 and which values the Company immediately prior to such sale of
securities at $50,000,000 or more, (B) any sale of all or  substantially  all of
the assets of the Company,  or (C) any merger,  consolidation,  sale of stock or
other  transaction  or series of related  transactions  in which the  holders of
capital stock of the Company before the  transaction no longer hold at least 50%
of the capital stock of the Company after the transaction.

     (d) Each  exercise of this  Warrant  shall be deemed to have been  effected
immediately  prior to the close of  business  on the day on which  this  Warrant
shall have been  surrendered to the Company as provided in subsection 1(a) above
(the  "Exercise  Date").  At such  time,  the person or persons in whose name or
names any  certificates  for Warrant Shares shall be issuable upon such exercise
as provided in  subsection  1(d) below shall be deemed to have become the holder
or holders of record of the Warrant Shares represented by such certificates.

     (e) As soon as practicable after the exercise of this Warrant in full or in
part, and in any event within 10 days thereafter,  the Company,  at its expense,
will cause to be issued in the name of, and delivered to, the Registered Holder,
or as such Holder (upon payment by such Holder of any applicable transfer taxes)
may direct:

     (i) a certificate or certificates  for the number of full Warrant Shares to
which the  Registered  Holder shall be entitled upon such exercise plus, in lieu
of any  fractional  share to which the  Registered  Holder  would  otherwise  be
entitled, cash in an amount determined pursuant to Section 3 hereof; and

     (ii) in case such  exercise  is in part only,  a new  warrant  or  warrants
(dated the date hereof) of like tenor,  calling in the  aggregate on the face or
faces thereof for the number of Warrant Shares equal  (without  giving effect to
any  adjustment  therein) to the number of such shares called for on the face of
this  Warrant  minus the sum of (a) the number of such shares  purchased  by the
Registered  Holder upon such exercise plus (b) the number of Warrant  Shares (if
any) covered by the portion of this Warrant cancelled in payment of the Purchase
Price payable upon such exercise pursuant to subsection 1(b) above.

2.       Adjustments.
         -----------

     (a) Adjustment for Stock Splits and  Combinations.  If the Company shall at
any time or from time to time  after the date on which  this  Warrant  was first
issued (the  "Original  Issue Date")  effect a  subdivision  of the  outstanding
Common  Stock,  the  Purchase  Price  then in  effect  immediately  before  that
subdivision shall be proportionately decreased. If the Company shall at any time
or from time to time after the  Original  Issue  Date  combine  the  outstanding
shares of Common Stock, the Purchase Price then in effect immediately before the
combination  shall be  proportionately  increased.  Any  adjustment  under  this
paragraph  shall  become  effective  at the  close of  business  on the date the
subdivision or combination becomes effective.

                                       3
<PAGE>

     (b) Adjustment for Certain  Dividends and  Distributions.  In the event the
Company at any time,  or from time to time after the  Original  Issue Date shall
make or issue, or fix a record date for the  determination  of holders of Common
Stock  entitled  to  receive,  a  dividend  or  other  distribution  payable  in
additional  shares of Common  Stock,  then and in each such  event the  Purchase
Price then in effect  immediately before such event shall be decreased as of the
time of such issuance or, in the event such a record date shall have been fixed,
as of the close of business on such record  date,  by  multiplying  the Purchase
Price then in effect by a fraction:

        (1)       the  numerator of which shall be the total number of shares of
                  Common Stock issued and outstanding  immediately  prior to the
                  time of such  issuance or the close of business on such record
                  date, and

        (2)       the  denominator  of which shall be the total number of shares
                  of Common Stock issued and  outstanding  immediately  prior to
                  the time of such  issuance  or the close of  business  on such
                  record date plus the number of shares of Common Stock issuable
                  in payment of such dividend or distribution;

provided,  however,  if such record date shall have been fixed and such dividend
is not fully  paid or if such  distribution  is not fully made on the date fixed
therefor,  the Purchase Price shall be recomputed accordingly as of the close of
business on such record date and thereafter the Purchase Price shall be adjusted
pursuant to this paragraph as of the time of actual payment of such dividends or
distributions.

     (c) Adjustment in Number of Warrant Shares. When any adjustment is required
to be made in the  Purchase  Price  pursuant to  subsections  2(a) or 2(b),  the
number of Warrant Shares  purchasable upon the exercise of this Warrant shall be
changed to the number  determined  by dividing (i) an amount equal to the number
of shares issuable upon the exercise of this Warrant  immediately  prior to such
adjustment, multiplied by the Purchase Price in effect immediately prior to such
adjustment,  by (ii)  the  Purchase  Price  in  effect  immediately  after  such
adjustment.

     (d)  Adjustments for Other  Dividends and  Distributions.  In the event the
Company  at any time or from time to time  after the  Original  Issue Date shall
make or issue, or fix a record date for the  determination  of holders of Common
Stock  entitled  to  receive,  a  dividend  or  other  distribution  payable  in
securities  of the Company  (other  than  shares of Common  Stock) or in cash or
other property (other than cash out of earnings or earned surplus, determined in
accordance with generally accepted accounting principles), then and in each such
event provision  shall be made so that the Registered  Holder shall receive upon
exercise  hereof,  in addition to the number of shares of Common Stock  issuable
hereunder,  the kind and amount of  securities  of the  Company  and/or cash and
other property  which the Registered  Holder would have been entitled to receive
had this Warrant been  exercised into Common Stock on the date of such event and
had the Registered  Holder  thereafter,  during the period from the date of such
event  to  and  including  the  Exercise  Date,  retained  any  such  securities
receivable,  giving application to all adjustments called for during such period
under this Section 2 with respect to the rights of the Registered Holder.

                                       4
<PAGE>

     (e)  Adjustment for Mergers or  Reorganizations,  etc. If there shall occur
any  reorganization,  recapitalization,  consolidation  or merger  involving the
Company in which the Common Stock is converted into or exchanged for securities,
cash or other property  (other than a transaction  covered by subsections  2(a),
2(b) or  2(d)),  then,  following  any  such  reorganization,  recapitalization,
consolidation  or merger,  the  Registered  Holder shall  receive upon  exercise
hereof  the kind and  amount of  securities,  cash or other  property  which the
Registered  Holder would have been entitled to receive if,  immediately prior to
such reorganization,  recapitalization,  consolidation or merger, the Registered
Holder had held the number of shares of Common Stock subject to this Warrant. In
such case,  appropriate  adjustment (as determined in good faith by the Board of
Directors of the Company) shall be made in the application of the provisions set
forth  herein  with  respect  to the  rights  and  interests  thereafter  of the
Registered  Holder,  to the end that the  provisions set forth in this Section 2
(including  provisions  with respect to changes in and other  adjustments of the
Purchase Price) shall thereafter be applicable,  as nearly as reasonably may be,
in relation to any  securities,  cash or other property  thereafter  deliverable
upon the exercise of this Warrant.

     (f) Certificate as to  Adjustments.  Upon the occurrence of each adjustment
or readjustment of the Purchase Price pursuant to this Section 2, the Company at
its expense shall promptly compute such adjustment or readjustment in accordance
with the terms hereof and furnish to the Registered Holder a certificate setting
forth  such  adjustment  or  readjustment  (including  the  kind and  amount  of
securities,  cash or other  property for which this Warrant shall be exercisable
and the  Purchase  Price)  and  showing  in detail  the facts  upon  which  such
adjustment or readjustment is based. The Company shall, upon the written request
at any time of the  Registered  Holder,  furnish or cause to be furnished to the
Registered  Holder a certificate  setting  forth (i) the Purchase  Price then in
effect and (ii) the number of shares of Common Stock and the amount,  if any, of
other  securities,  cash or  property  which  then  would be  received  upon the
exercise of this Warrant.

3.  Fractional  Shares.  The Company  shall not be required upon the exercise of
this  Warrant  to issue any  fractional  shares,  but shall  make an  adjustment
therefor  in cash on the  basis of the Fair  Market  Value  per  share of Common
Stock, as determined pursuant to subsection 1(b) above.

4.       Requirements for Transfer.
         -------------------------

     (a) This Warrant and the Warrant  Shares  shall not be sold or  transferred
unless either (i) they first shall have been registered under the Securities Act
of 1933,  as amended  (the  "Act"),  or (ii) the  Company  first shall have been
furnished  with an  opinion of legal  counsel,  reasonably  satisfactory  to the
Company  (it  being  stipulated  that an  opinion  of Hale and Dorr LLP shall be
satisfactory),  to the  effect  that such sale or  transfer  is exempt  from the
registration requirements of the Act.

     (b)  Notwithstanding  the foregoing,  no registration or opinion of counsel
shall be required for (i) a transfer by a Registered Holder to a party specified
in Section  10(b) below,  or (ii) a transfer  made in  accordance  with Rule 144
under the Act.

     (c)  Each  certificate  representing  Warrant  Shares  shall  bear a legend
substantially in the following form:

                                       5
<PAGE>

                 "The securities  represented by this  certificate have not been
                 registered  under the Securities  Act of 1933, as amended,  and
                 may not be offered, sold or otherwise  transferred,  pledged or
                 hypothecated  unless and until such  securities  are registered
                 under such Act or an opinion  of  counsel  satisfactory  to the
                 Company is obtained to the effect that such registration is not
                 required."

         The   foregoing   legend  shall  be  removed   from  the   certificates
representing any Warrant Shares,  at the request of the holder thereof,  at such
time as they become eligible for resale pursuant to Rule 144(k) under the Act.

5. No  Impairment.  The Company will not, by amendment of its charter or through
reorganization, transfer of assets, consolidation, merger, dissolution, issue or
sale of securities  or any other  voluntary  action,  avoid or seek to avoid the
observance or performance  of any of the terms of this Warrant,  but will at all
times in good  faith  assist in the  carrying  out of all such  terms and in the
taking of all such action as may be necessary or appropriate in order to protect
the rights of the holder of this Warrant against impairment.

6.       Notices of Record Date, etc.  In the event:
         ----------------------------

     (a) the Company  shall take a record of the holders of its Common Stock (or
other stock or  securities  at the time  deliverable  upon the  exercise of this
Warrant) for the purpose of  entitling or enabling  them to receive any dividend
or other distribution,  or to receive any right to subscribe for or purchase any
shares of stock of any class or any other  securities,  or to receive  any other
right; or

     (b) of any capital  reorganization of the Company,  any reclassification of
the Common Stock of the Company, any consolidation or merger of the Company with
or into another  corporation  (other than a consolidation or merger in which the
Company is the surviving  entity and its Common Stock is not  converted  into or
exchanged  for any other  securities  or  property),  or any  transfer of all or
substantially all of the assets of the Company; or

     (c) of the voluntary or involuntary dissolution,  liquidation or winding-up
of the Company,

then,  and in each such case, the Company will mail or cause to be mailed to the
Registered Holder a notice  specifying,  as the case may be, (i) the record date
for such dividend,  distribution or right,  and the amount and character of such
dividend,  distribution  or  right,  or (ii) the  effective  date on which  such
reorganization, reclassification,  consolidation, merger, transfer, dissolution,
liquidation or winding-up is to take place, and the time, if any is to be fixed,
as of which  the  holders  of record of  Common  Stock (or such  other  stock or
securities at the time  deliverable  upon the exercise of this Warrant) shall be
entitled  to  exchange  their  shares of Common  Stock (or such  other  stock or
securities)   for   securities   or  other   property   deliverable   upon  such
reorganization, reclassification,  consolidation, merger, transfer, dissolution,
liquidation or  winding-up.  Such notice shall be mailed at least ten days prior
to the record date or effective date for the event specified in such notice.

                                       6
<PAGE>

7.  Reservation  of  Stock.  The  Company  will at all  times  reserve  and keep
available,  solely for issuance and delivery  upon the exercise of this Warrant,
such number of Warrant Shares and other  securities,  cash and/or  property,  as
from time to time shall be issuable upon the exercise of this Warrant.

8. Exchange of Warrants.  Upon the surrender by the Registered Holder,  properly
endorsed,  to the Company at the  principal  office of the Company,  the Company
will,  subject to the  provisions  of Section 4 hereof,  issue and deliver to or
upon the order of such  Holder,  at the  Company's  expense,  a new  Warrant  or
Warrants  of  like  tenor,  in the  name  of  the  Registered  Holder  or as the
Registered  Holder  (upon  payment by the  Registered  Holder of any  applicable
transfer  taxes)  may  direct,  calling  in the  aggregate  on the face or faces
thereof  for the  number of shares of Common  Stock (or other  securities,  cash
and/or property) then issuable upon exercise of this Warrant.

9. Replacement of Warrants.  Upon receipt of evidence reasonably satisfactory to
the Company of the loss,  theft,  destruction  or mutilation of this Warrant and
(in the case of loss,  theft  or  destruction)  upon  delivery  of an  indemnity
agreement  (with  surety  if  reasonably   required)  in  an  amount  reasonably
satisfactory to the Company,  or (in the case of mutilation)  upon surrender and
cancellation  of this Warrant,  the Company will issue,  in lieu thereof,  a new
Warrant of like tenor.

10.      Transfers, etc.

     (a) The Company will maintain a register containing the name and address of
the Registered  Holder of this Warrant.  The Registered Holder may change its or
his  address as shown on the warrant  register by written  notice to the Company
requesting such change.

     (b) Subject to the  provisions  of Section 4 hereof,  this  Warrant and all
rights hereunder are transferable,  in whole or in part, to any partner, member,
stockholder or affiliate of the holder,  and any such transferee  shall have the
rights of the Registered  Holder to the extent of the portion of this Warrant so
transferred.  Such transfer  shall be effective  upon  surrender of this Warrant
with a properly  executed  assignment  (in the form of Exhibit II hereto) at the
principal  office of the  Company.  Nothing  contained  in this Section 10 shall
limit the transferability of the Warrant Shares.

     (c) Until any transfer of this Warrant is made in the warrant register, the
Company may treat the  Registered  Holder as the  absolute  owner hereof for all
purposes;  provided, however, that if and when this Warrant is properly assigned
in blank,  the  Company  may (but  shall not be  obligated  to) treat the bearer
hereof as the absolute owner hereof for all purposes, notwithstanding any notice
to the contrary.

11.  Mailing of Notices,  etc.  All notices  and other  communications  from the
Company to the  Registered  Holder shall be mailed by  first-class  certified or
registered mail,  postage prepaid,  to the address last furnished to the Company
in writing by the Registered Holder. All notices and other  communications  from
the Registered  Holder or in connection  herewith to the Company shall be mailed
by first-class  certified or registered mail, postage prepaid, to the Company at
its principal  office set forth below.  If the Company should at any time change
the location of its  principal  office to a place other than as set forth below,
it shall give prompt written

                                       7
<PAGE>

notice to the Registered Holder and thereafter all references in this Warrant to
the  location  of its  principal  office at the  particular  time shall be as so
specified in such notice.

12. No Rights as Shareholder. Until the exercise of this Warrant, the Registered
Holder shall not have or exercise any rights by virtue  hereof as a  shareholder
of the  Company.  Notwithstanding  the  foregoing,  in the event (i) the Company
effects  a split  of the  Common  Stock by  means  of a stock  dividend  and the
Purchase  Price of and the number of Warrant  Shares are adjusted as of the date
of the  distribution of the dividend (rather than as of the record date for such
dividend),  and (ii) the Registered  Holder  exercises this Warrant  between the
record date and the  distribution  date for such stock dividend,  the Registered
Holder  shall be  entitled  to  receive,  on the  distribution  date,  the stock
dividend with respect to the shares of Common Stock acquired upon such exercise,
notwithstanding  the fact that such shares were not  outstanding as of the close
of business on the record date for such stock dividend.

13.      Change or Waiver.  Any  term of  this Warrant  may be changed or waived
only by an instrument  in  writing signed by the party against which enforcement
of the change or waiver is sought.

14.      Section Headings.  The  section  headings in  this Warrant  are for the
convenience of the parties and in no way alter, modify, amend, limit or restrict
the contractual obligations of the parties.

15.      Governing Law.  This  Warrant will  be  governed  by and  construed  in
accordance  with  the  internal laws  of the  Commonwealth  of Virginia (without
reference to the conflicts of law provisions thereof).

                                       8

<PAGE>


         EXECUTED as of the Date of Issuance indicated above.

                                                 ESSEX CORPORATION

                                                 By: /s/ Leonard E. Moodispaw
                                                     --------------------------
[Corporate Seal]                                 Title: President & CEO
                                                        ---------------

ATTEST:

/s/ Sarah E. Roberts
--------------------

                                       9

<PAGE>


                                                                       EXHIBIT I

                                  PURCHASE FORM

To:_________________                                        Dated:____________

         The  undersigned,  pursuant to the provisions set forth in the attached
Warrant (No. 1), hereby irrevocably elects to purchase (check applicable box):

         0        _____ shares of the Common Stock covered by such Warrant; or

         0        the maximum  number of shares of Common Stock  covered by such
                  Warrant pursuant to the cashless exercise  procedure set forth
                  in Section 1(b).

         The  undersigned  herewith makes payment of the full purchase price for
such  shares  at the  price per share  provided  for in such  Warrant,  which is
$________. Such payment takes the form of (check applicable box or boxes):

         0        $______ in lawful money of the United States; and/or

         0        the cancellation of such portion of the attached Warrant as is
                  exercisable  for a total of _____ Warrant Shares (using a Fair
                  Market  Value  of  $_____  per  share  for  purposes  of  this
                  calculation); and/or

         0        the  cancellation  of such  number  of  Warrant  Shares  as is
                  necessary, in accordance with the formula set forth in Section
                  1(b),  to exercise  this  Warrant  with respect to the maximum
                  number of Warrant Shares purchasable  pursuant to the cashless
                  exercise procedure set forth in Section 1(b).

                                            Signature: _______________________

                                            Address:   _______________________

                                                       _______________________

                                       10

<PAGE>


                                                                    EXHIBIT II

                                 ASSIGNMENT FORM

         FOR  VALUE  RECEIVED,  ________________________________________  hereby
sells,  assigns and  transfers  all of the rights of the  undersigned  under the
attached  Warrant  (No. 1) with  respect to the number of shares of Common Stock
covered thereby set forth below, unto:

Name of Assignee                  Address                         No. of Shares
----------------                  -------                         -------------



Dated:_____________________          Signature:________________________________

Signature Guaranteed:

By: _______________________

The signature should be guaranteed by an eligible guarantor  institution (banks,
stockbrokers, savings and loan associations and credit unions with membership in
an approved  signature  guarantee  medallion  program)  pursuant to Rule 17Ad-15
under the Securities Exchange Act of 1934.


                                       11


<PAGE>



           THIS WARRANT AND THE SHARES OF COMMON STOCK ISSUED UPON ITS
                   EXERCISE ARE SUBJECT TO THE RESTRICTIONS ON
                 TRANSFER SET FORTH IN SECTION 4 OF THIS WARRANT

Warrant No. 2                                      Number of Shares: 1,000,000
                                                       (subject to adjustment)
Date of Issuance: September 12, 2000

                                ESSEX CORPORATION

                          Common Stock Purchase Warrant

                         (Void after September 12, 2005)

         Essex Corporation,  a Virginia  corporation (the "Company"),  for value
received,  hereby certifies that Networking Ventures,  L.L.C., or its registered
assigns  (the  "Registered  Holder"),  is  entitled,  subject  to the  terms and
conditions  set forth below,  to purchase from the Company,  at any time or from
time to time on or  after  the  date of  issuance  and on or  before  5:00  p.m.
(Eastern time) on September 12, 2005,  1,000,000  shares of Common Stock, of the
Company,  at a purchase price of $.001 per share.  The shares  purchasable  upon
exercise of this  Warrant,  and the purchase  price per share,  each as adjusted
from time to time pursuant to the  provisions of this Warrant,  are  hereinafter
referred to as the "Warrant Shares" and the "Purchase Price," respectively.

1.       Exercise.
         --------

     (a) Subject to subsection 1(c) below,  this Warrant may be exercised by the
Registered  Holder, in whole or in part, by surrendering this Warrant,  with the
purchase  form  appended  hereto as Exhibit I duly  executed  by the  Registered
Holder or by the Registered Holder's duly authorized attorney,  at the principal
office of the  Company,  or at such other  office or agency as the  Company  may
designate, accompanied by payment in full, in lawful money of the United States,
of the  Purchase  Price  payable in  respect  of the  number of  Warrant  Shares
purchased upon such exercise.

     (b) Subject to subsection  1(c) below,  the  Registered  Holder may, at its
option,  elect to pay some or all of the Purchase Price payable upon an exercise
of this  Warrant by  canceling a portion of this  Warrant  exercisable  for such
number of Warrant  Shares as is  determined  by dividing (i) the total  Purchase
Price payable in respect of the number of Warrant  Shares being  purchased  upon
such  exercise by (ii) the excess of the Fair  Market  Value per share of Common
Stock  (as  defined  below)  averaged  over the five  trading  days  immediately
preceding  the  Exercise  Date (as  defined in  subsection  1(d) below) over the
Purchase  Price per share.  If the  Registered  Holder  wishes to exercise  this
Warrant pursuant to this method of payment with respect to the maximum number of
Warrant Shares purchasable  pursuant to this method,  then the number of Warrant
Shares so  purchasable  shall be equal to the total  number of  Warrant  Shares,
minus the product obtained by multiplying (x) the total number of Warrant Shares
by (y) a fraction,  the numerator of which shall be the Purchase Price per share
and the  denominator of which shall be the Fair Market Value per share of Common
Stock  averaged  over the five trading days

<PAGE>

immediately  preceding  the  Exercise  Date.  The Fair Market Value per share of
Common Stock shall be determined as follows:

     (i) If the Common Stock is listed on a national securities exchange, Nasdaq
Stock Market, OTC Bulletin Board or another nationally recognized trading system
as of the Exercise  Date,  the Fair Market Value per share of Common Stock shall
be deemed to be the average of the high and low  reported  sale prices per share
of Common  Stock  (provided  that if no such price is reported on such day,  the
Fair  Market  Value per share of Common  Stock shall be  determined  pursuant to
clause (ii)).

     (ii) If the Common Stock is not listed on a national  securities  exchange,
Nasdaq Stock Market, OTC Bulletin Board or another nationally recognized trading
system as of the Exercise  Date, the Fair Market Value per share of Common Stock
shall be  deemed  to be the  amount  most  recently  determined  by the Board of
Directors  to  represent  the fair  market  value per share of the Common  Stock
(including  without  limitation a determination  for purposes of granting Common
Stock  options or issuing  Common  Stock under an employee  benefit  plan of the
Company); and, upon request of the Registered Holder, the Board of Directors (or
a  representative  thereof) shall promptly  notify the Registered  Holder of the
Fair Market Value per share of Common Stock.  Notwithstanding the foregoing,  if
the Board of Directors has not made such a determination  within the three-month
period prior to the Exercise Date,  then (A) the Board of Directors shall make a
determination  of the Fair Market  Value per share of the Common Stock within 15
days of a request by the  Registered  Holder that it do so, and (B) the exercise
of this Warrant  pursuant to this  subsection  1(b) shall be delayed  until such
determination is made.

     (c) This Warrant shall be exercisable  only to the extent set forth in this
subsection 1(c):

     (i) If the Fair Market Value of the Common Stock (determined as provided in
subsection  1(b)(i) above),  for five  consecutive  trading days, with aggregate
volume  on the  market  on which  the  Common  Stock  is  traded  for such  five
consecutive  trading  days of at least  100,000  shares,  exceeds the amount set
forth below under the heading  "Share Price"  (adjusted for stock splits,  stock
dividends  and similar  recapitalizations),  this Warrant shall  immediately  be
exercisable  to purchase the number of Warrant  Shares set forth below under the
heading "Cumulative Shares Exercisable:"

<TABLE>
<CAPTION>

          Share Price                    Cumulative Shares Exercisable
          -----------                    -----------------------------
<S>       <C>                              <C>
          $10                              250,000
          $12                              375,000
          $14                              500,000
          $16                              625,000
          $18                              750,000
          $20                            1,000,000

</TABLE>
                                       2
<PAGE>

     (ii) In addition,  this Warrant shall be exercisable to purchase all of the
Warrant Shares covered by this Warrant immediately prior to the closing of (A) a
sale of securities by the Company by means of a private placement or pursuant to
a registration  statement,  which results in gross proceeds to the Company of at
least $10,000,000 and which values the Company immediately prior to such sale of
securities at $50,000,000 or more, (B) any sale of all or  substantially  all of
the assets of the Company,  or (C) any merger,  consolidation,  sale of stock or
other  transaction  or series of related  transactions  in which the  holders of
capital stock of the Company before the  transaction no longer hold at least 50%
of the capital stock of the Company after the transaction.

     (d) Each  exercise of this  Warrant  shall be deemed to have been  effected
immediately  prior to the close of  business  on the day on which  this  Warrant
shall have been  surrendered to the Company as provided in subsection 1(a) above
(the  "Exercise  Date").  At such  time,  the person or persons in whose name or
names any  certificates  for Warrant Shares shall be issuable upon such exercise
as provided in  subsection  1(d) below shall be deemed to have become the holder
or holders of record of the Warrant Shares represented by such certificates.

     (e) As soon as practicable after the exercise of this Warrant in full or in
part, and in any event within 10 days thereafter,  the Company,  at its expense,
will cause to be issued in the name of, and delivered to, the Registered Holder,
or as such Holder (upon payment by such Holder of any applicable transfer taxes)
may direct:

     (i) a certificate or certificates  for the number of full Warrant Shares to
which the  Registered  Holder shall be entitled upon such exercise plus, in lieu
of any  fractional  share to which the  Registered  Holder  would  otherwise  be
entitled, cash in an amount determined pursuant to Section 3 hereof; and

     (ii) in case such  exercise  is in part only,  a new  warrant  or  warrants
(dated the date hereof) of like tenor,  calling in the  aggregate on the face or
faces thereof for the number of Warrant Shares equal  (without  giving effect to
any  adjustment  therein) to the number of such shares called for on the face of
this  Warrant  minus the sum of (a) the number of such shares  purchased  by the
Registered  Holder upon such exercise plus (b) the number of Warrant  Shares (if
any) covered by the portion of this Warrant cancelled in payment of the Purchase
Price payable upon such exercise pursuant to subsection 1(b) above.

2.       Adjustments.
         -----------

     (a) Adjustment for Stock Splits and  Combinations.  If the Company shall at
any time or from time to time  after the date on which  this  Warrant  was first
issued (the  "Original  Issue Date")  effect a  subdivision  of the  outstanding
Common  Stock,  the  Purchase  Price  then in  effect  immediately  before  that
subdivision shall be proportionately decreased. If the Company shall at any time
or from time to time after the  Original  Issue  Date  combine  the  outstanding
shares of Common Stock, the Purchase Price then in effect immediately before the
combination  shall be  proportionately  increased.  Any  adjustment  under  this
paragraph  shall  become  effective  at the  close of  business  on the date the
subdivision or combination becomes effective.

                                       3
<PAGE>

     (b) Adjustment for Certain  Dividends and  Distributions.  In the event the
Company at any time,  or from time to time after the  Original  Issue Date shall
make or issue, or fix a record date for the  determination  of holders of Common
Stock  entitled  to  receive,  a  dividend  or  other  distribution  payable  in
additional  shares of Common  Stock,  then and in each such  event the  Purchase
Price then in effect  immediately before such event shall be decreased as of the
time of such issuance or, in the event such a record date shall have been fixed,
as of the close of business on such record  date,  by  multiplying  the Purchase
Price then in effect by a fraction:

        (1)       the  numerator of which shall be the total number of shares of
                  Common Stock issued and outstanding  immediately  prior to the
                  time of such  issuance or the close of business on such record
                  date, and

        (2)       the  denominator  of which shall be the total number of shares
                  of Common Stock issued and  outstanding  immediately  prior to
                  the time of such  issuance  or the close of  business  on such
                  record date plus the number of shares of Common Stock issuable
                  in payment of such dividend or distribution;

provided,  however,  if such record date shall have been fixed and such dividend
is not fully  paid or if such  distribution  is not fully made on the date fixed
therefor,  the Purchase Price shall be recomputed accordingly as of the close of
business on such record date and thereafter the Purchase Price shall be adjusted
pursuant to this paragraph as of the time of actual payment of such dividends or
distributions.

     (c) Adjustment in Number of Warrant Shares. When any adjustment is required
to be made in the  Purchase  Price  pursuant to  subsections  2(a) or 2(b),  the
number of Warrant Shares  purchasable upon the exercise of this Warrant shall be
changed to the number  determined  by dividing (i) an amount equal to the number
of shares issuable upon the exercise of this Warrant  immediately  prior to such
adjustment, multiplied by the Purchase Price in effect immediately prior to such
adjustment,  by (ii)  the  Purchase  Price  in  effect  immediately  after  such
adjustment.

     (d)  Adjustments for Other  Dividends and  Distributions.  In the event the
Company  at any time or from time to time  after the  Original  Issue Date shall
make or issue, or fix a record date for the  determination  of holders of Common
Stock  entitled  to  receive,  a  dividend  or  other  distribution  payable  in
securities  of the Company  (other  than  shares of Common  Stock) or in cash or
other property (other than cash out of earnings or earned surplus, determined in
accordance with generally accepted accounting principles), then and in each such
event provision  shall be made so that the Registered  Holder shall receive upon
exercise  hereof,  in addition to the number of shares of Common Stock  issuable
hereunder,  the kind and amount of  securities  of the  Company  and/or cash and
other property  which the Registered  Holder would have been entitled to receive
had this Warrant been  exercised into Common Stock on the date of such event and
had the Registered  Holder  thereafter,  during the period from the date of such
event  to  and  including  the  Exercise  Date,  retained  any  such  securities
receivable,  giving application to all adjustments called for during such period
under this Section 2 with respect to the rights of the Registered Holder.

                                       4
<PAGE>

     (e)  Adjustment for Mergers or  Reorganizations,  etc. If there shall occur
any  reorganization,  recapitalization,  consolidation  or merger  involving the
Company in which the Common Stock is converted into or exchanged for securities,
cash or other property  (other than a transaction  covered by subsections  2(a),
2(b) or  2(d)),  then,  following  any  such  reorganization,  recapitalization,
consolidation  or merger,  the  Registered  Holder shall  receive upon  exercise
hereof  the kind and  amount of  securities,  cash or other  property  which the
Registered  Holder would have been entitled to receive if,  immediately prior to
such reorganization,  recapitalization,  consolidation or merger, the Registered
Holder had held the number of shares of Common Stock subject to this Warrant. In
such case,  appropriate  adjustment (as determined in good faith by the Board of
Directors of the Company) shall be made in the application of the provisions set
forth  herein  with  respect  to the  rights  and  interests  thereafter  of the
Registered  Holder,  to the end that the  provisions set forth in this Section 2
(including  provisions  with respect to changes in and other  adjustments of the
Purchase Price) shall thereafter be applicable,  as nearly as reasonably may be,
in relation to any  securities,  cash or other property  thereafter  deliverable
upon the exercise of this Warrant.

     (f) Certificate as to  Adjustments.  Upon the occurrence of each adjustment
or readjustment of the Purchase Price pursuant to this Section 2, the Company at
its expense shall promptly compute such adjustment or readjustment in accordance
with the terms hereof and furnish to the Registered Holder a certificate setting
forth  such  adjustment  or  readjustment  (including  the  kind and  amount  of
securities,  cash or other  property for which this Warrant shall be exercisable
and the  Purchase  Price)  and  showing  in detail  the facts  upon  which  such
adjustment or readjustment is based. The Company shall, upon the written request
at any time of the  Registered  Holder,  furnish or cause to be furnished to the
Registered  Holder a certificate  setting  forth (i) the Purchase  Price then in
effect and (ii) the number of shares of Common Stock and the amount,  if any, of
other  securities,  cash or  property  which  then  would be  received  upon the
exercise of this Warrant.

3.  Fractional  Shares.  The Company  shall not be required upon the exercise of
this  Warrant  to issue any  fractional  shares,  but shall  make an  adjustment
therefor  in cash on the  basis of the Fair  Market  Value  per  share of Common
Stock, as determined pursuant to subsection 1(b) above.

4.       Requirements for Transfer.
         -------------------------

     (a) This Warrant and the Warrant  Shares  shall not be sold or  transferred
unless either (i) they first shall have been registered under the Securities Act
of 1933,  as amended  (the  "Act"),  or (ii) the  Company  first shall have been
furnished  with an  opinion of legal  counsel,  reasonably  satisfactory  to the
Company  (it  being  stipulated  that an  opinion  of Hale and Dorr LLP shall be
satisfactory),  to the  effect  that such sale or  transfer  is exempt  from the
registration requirements of the Act.

     (b)  Notwithstanding  the foregoing,  no registration or opinion of counsel
shall be required for (i) a transfer by a Registered Holder to a party specified
in Section  10(b) below,  or (ii) a transfer  made in  accordance  with Rule 144
under the Act.

                                       5
<PAGE>

     (c)  Each  certificate  representing  Warrant  Shares  shall  bear a legend
substantially in the following form:

                 "The securities  represented by this  certificate have not been
                 registered  under the Securities  Act of 1933, as amended,  and
                 may not be offered, sold or otherwise  transferred,  pledged or
                 hypothecated  unless and until such  securities  are registered
                 under such Act or an opinion  of  counsel  satisfactory  to the
                 Company is obtained to the effect that such registration is not
                 required."

         The   foregoing   legend  shall  be  removed   from  the   certificates
representing any Warrant Shares,  at the request of the holder thereof,  at such
time as they become eligible for resale pursuant to Rule 144(k) under the Act.

5. No  Impairment.  The Company will not, by amendment of its charter or through
reorganization, transfer of assets, consolidation, merger, dissolution, issue or
sale of securities  or any other  voluntary  action,  avoid or seek to avoid the
observance or performance  of any of the terms of this Warrant,  but will at all
times in good  faith  assist in the  carrying  out of all such  terms and in the
taking of all such action as may be necessary or appropriate in order to protect
the rights of the holder of this Warrant against impairment.

6.       Notices of Record Date, etc.  In the event:
         ----------------------------

     (a) the Company  shall take a record of the holders of its Common Stock (or
other stock or  securities  at the time  deliverable  upon the  exercise of this
Warrant) for the purpose of  entitling or enabling  them to receive any dividend
or other distribution,  or to receive any right to subscribe for or purchase any
shares of stock of any class or any other  securities,  or to receive  any other
right; or

     (b) of any capital  reorganization of the Company,  any reclassification of
the Common Stock of the Company, any consolidation or merger of the Company with
or into another  corporation  (other than a consolidation or merger in which the
Company is the surviving  entity and its Common Stock is not  converted  into or
exchanged  for any other  securities  or  property),  or any  transfer of all or
substantially all of the assets of the Company; or

     (c) of the voluntary or involuntary dissolution,  liquidation or winding-up
of the Company,

then,  and in each such case, the Company will mail or cause to be mailed to the
Registered Holder a notice  specifying,  as the case may be, (i) the record date
for such dividend,  distribution or right,  and the amount and character of such
dividend,  distribution  or  right,  or (ii) the  effective  date on which  such
reorganization, reclassification,  consolidation, merger, transfer, dissolution,
liquidation or winding-up is to take place, and the time, if any is to be fixed,
as of which  the  holders  of record of  Common  Stock (or such  other  stock or
securities at the time  deliverable  upon the exercise of this Warrant) shall be
entitled  to  exchange  their  shares of Common  Stock (or such  other  stock or
securities)   for   securities   or  other   property   deliverable   upon  such

                                       6
<PAGE>

reorganization, reclassification,  consolidation, merger, transfer, dissolution,
liquidation or  winding-up.  Such notice shall be mailed at least ten days prior
to the record date or effective date for the event specified in such notice.

7.  Reservation  of  Stock.  The  Company  will at all  times  reserve  and keep
available,  solely for issuance and delivery  upon the exercise of this Warrant,
such number of Warrant Shares and other  securities,  cash and/or  property,  as
from time to time shall be issuable upon the exercise of this Warrant.

8. Exchange of Warrants.  Upon the surrender by the Registered Holder,  properly
endorsed,  to the Company at the  principal  office of the Company,  the Company
will,  subject to the  provisions  of Section 4 hereof,  issue and deliver to or
upon the order of such  Holder,  at the  Company's  expense,  a new  Warrant  or
Warrants  of  like  tenor,  in the  name  of  the  Registered  Holder  or as the
Registered  Holder  (upon  payment by the  Registered  Holder of any  applicable
transfer  taxes)  may  direct,  calling  in the  aggregate  on the face or faces
thereof  for the  number of shares of Common  Stock (or other  securities,  cash
and/or property) then issuable upon exercise of this Warrant.

9. Replacement of Warrants.  Upon receipt of evidence reasonably satisfactory to
the Company of the loss,  theft,  destruction  or mutilation of this Warrant and
(in the case of loss,  theft  or  destruction)  upon  delivery  of an  indemnity
agreement  (with  surety  if  reasonably   required)  in  an  amount  reasonably
satisfactory to the Company,  or (in the case of mutilation)  upon surrender and
cancellation  of this Warrant,  the Company will issue,  in lieu thereof,  a new
Warrant of like tenor.

10.      Transfers, etc.

     (a) The Company will maintain a register containing the name and address of
the Registered  Holder of this Warrant.  The Registered Holder may change its or
his  address as shown on the warrant  register by written  notice to the Company
requesting such change.

     (b) Subject to the  provisions  of Section 4 hereof,  this  Warrant and all
rights hereunder are transferable,  in whole or in part, to any partner, member,
stockholder or affiliate of the holder,  and any such transferee  shall have the
rights of the Registered  Holder to the extent of the portion of this Warrant so
transferred.  Such transfer  shall be effective  upon  surrender of this Warrant
with a properly  executed  assignment  (in the form of Exhibit II hereto) at the
principal  office of the  Company.  Nothing  contained  in this Section 10 shall
limit the transferability of the Warrant Shares.

     (c) Until any transfer of this Warrant is made in the warrant register, the
Company may treat the  Registered  Holder as the  absolute  owner hereof for all
purposes;  provided, however, that if and when this Warrant is properly assigned
in blank,  the  Company  may (but  shall not be  obligated  to) treat the bearer
hereof as the absolute owner hereof for all purposes, notwithstanding any notice
to the contrary.

11.  Mailing of Notices,  etc.  All notices  and other  communications  from the
Company to the  Registered  Holder shall be mailed by  first-class  certified or
registered mail,  postage prepaid,  to the address last furnished to the Company
in writing by the Registered Holder. All

                                       7
<PAGE>

notices and other  communications  from the  Registered  Holder or in connection
herewith to the Company shall be mailed by  first-class  certified or registered
mail,  postage prepaid,  to the Company at its principal office set forth below.
If the Company should at any time change the location of its principal office to
a place other than as set forth below,  it shall give prompt  written  notice to
the  Registered  Holder and  thereafter  all  references  in this Warrant to the
location of its principal office at the particular time shall be as so specified
in such notice.

12. No Rights as Shareholder. Until the exercise of this Warrant, the Registered
Holder shall not have or exercise any rights by virtue  hereof as a  shareholder
of the  Company.  Notwithstanding  the  foregoing,  in the event (i) the Company
effects  a split  of the  Common  Stock by  means  of a stock  dividend  and the
Purchase  Price of and the number of Warrant  Shares are adjusted as of the date
of the  distribution of the dividend (rather than as of the record date for such
dividend),  and (ii) the Registered  Holder  exercises this Warrant  between the
record date and the  distribution  date for such stock dividend,  the Registered
Holder  shall be  entitled  to  receive,  on the  distribution  date,  the stock
dividend with respect to the shares of Common Stock acquired upon such exercise,
notwithstanding  the fact that such shares were not  outstanding as of the close
of business on the record date for such stock dividend.

13.      Change or Waiver.  Any  term of  this Warrant  may be changed or waived
only by an instrument  in  writing signed by the party against which enforcement
of the change or waiver is sought.

14.      Section Headings.  The  section  headings in  this Warrant  are for the
convenience of the parties and in no way alter, modify, amend, limit or restrict
the contractual obligations of the parties.

15.      Governing Law.  This  Warrant will  be  governed  by and  construed  in
accordance  with  the  internal laws  of the  Commonwealth  of Virginia (without
reference to the conflicts of law provisions thereof).

                                       8

<PAGE>


         EXECUTED as of the Date of Issuance indicated above.

                                                 ESSEX CORPORATION

                                                 By: /s/ Leonard E. Moodispaw
                                                     --------------------------
[Corporate Seal]                                 Title: President & CEO
                                                        ---------------

ATTEST:

/s/ Sarah E. Roberts
--------------------

                                       9

<PAGE>


                                                                       EXHIBIT I

                                  PURCHASE FORM

To:_________________                                        Dated:____________

         The  undersigned,  pursuant to the provisions set forth in the attached
Warrant (No. 1), hereby irrevocably elects to purchase (check applicable box):

         0        _____ shares of the Common Stock covered by such Warrant; or

         0        the maximum  number of shares of Common Stock  covered by such
                  Warrant pursuant to the cashless exercise  procedure set forth
                  in Section 1(b).

         The  undersigned  herewith makes payment of the full purchase price for
such  shares  at the  price per share  provided  for in such  Warrant,  which is
$________. Such payment takes the form of (check applicable box or boxes):

         0        $______ in lawful money of the United States; and/or

         0        the cancellation of such portion of the attached Warrant as is
                  exercisable  for a total of _____ Warrant Shares (using a Fair
                  Market  Value  of  $_____  per  share  for  purposes  of  this
                  calculation); and/or

         0        the  cancellation  of such  number  of  Warrant  Shares  as is
                  necessary, in accordance with the formula set forth in Section
                  1(b),  to exercise  this  Warrant  with respect to the maximum
                  number of Warrant Shares purchasable  pursuant to the cashless
                  exercise procedure set forth in Section 1(b).

                                            Signature: _______________________

                                            Address:   _______________________

                                                       _______________________

                                       10

<PAGE>


                                                                    EXHIBIT II

                                 ASSIGNMENT FORM

         FOR  VALUE  RECEIVED,  ________________________________________  hereby
sells,  assigns and  transfers  all of the rights of the  undersigned  under the
attached  Warrant  (No. 1) with  respect to the number of shares of Common Stock
covered thereby set forth below, unto:

Name of Assignee                  Address                         No. of Shares
----------------                  -------                         -------------



Dated:_____________________          Signature:________________________________

Signature Guaranteed:

By: _______________________

The signature should be guaranteed by an eligible guarantor  institution (banks,
stockbrokers, savings and loan associations and credit unions with membership in
an approved  signature  guarantee  medallion  program)  pursuant to Rule 17Ad-15
under the Securities Exchange Act of 1934.

                                       11

<PAGE>

                                ESSEX CORPORATION


                                 Exhibit 99 (d)


                              ARTICLES OF AMENDMENT

<PAGE>

                              ARTICLES OF AMENDMENT
                                       OF
                                ESSEX CORPORATION


To the State Corporation Commission
Commonwealth of Virginia


         The following  Articles of Amendment are hereby  submitted  pursuant to
the  provisions  of  the  Virginia  Stock  Corporation  Act  on  behalf  of  the
corporation hereinafter named.

         I.   The  name  of the  corporation  (hereinafter  referred  to as the
              "Corporation") is Essex Corporation.

         II. Article (c) of the Articles of  Incorporation of the Corporation is
hereby amended to designate a new series of the Corporation's Preferred Stock to
be known as "Series B  Convertible  Preferred  Stock" by adding the following as
new Section (c)(B):

                  (c)(B)  Series B  Convertible  Preferred  Stock.  Five Hundred
Thousand  (500,000)  shares of  Preferred  Stock of the  Corporation  are hereby
designated as Series B Convertible  Preferred Stock ("Series B Preferred").  The
preferences,  privileges and relative  rights relating to the Series B Preferred
are as follows:

                          1.     Dividend Provisions.  The Corporation shall not
declare  or pay any  distributions  on  shares  of Common  Stock  (other  than a
distribution described in Section 3(d)(i) below) until the holders of the Series
B  Preferred  then  outstanding  shall have first  received,  or  simultaneously
receive,  out of any assets legally  available  therefor a distribution  on each
outstanding  share of Series B  Preferred  in an  amount  at least  equal to the
product  of (i)  the per  share  amount,  if  any,  of the  dividends  or  other
distributions to be declared, paid or set aside for the Common Stock, multiplied
by (ii) the  number of whole  shares of Common  Stock  into  which such share of
Series B Preferred is then convertible. Such dividends shall not be cumulative.

                          2.     Liquidation.  In the event of any  liquidation,
dissolution or winding up of the  Corporation,  either voluntary or involuntary,
the assets of the Corporation  available for distribution to stockholders  shall
be distributed among the holders of Common Stock and Series B Preferred pro rata
based on the number of shares of Common  Stock held by each such  holder or into
which such holder's shares of Series B Preferred are then convertible.

                          3.     Conversion.   The holders of Series B Preferred
shall have conversion rights as follows (the "Conversion Rights"):

                                 (a)  Right to Convert. Subject to Section 3(c),
each  share of Series B  Preferred  shall be  convertible,  at the option of the
holder  thereof,  at any time after the date of issuance  of such share,  at the
office of the  Corporation or any transfer  agent for such stock,  into four (4)
fully paid and  nonassessable  shares of Common  Stock (the "Series B Conversion
Rate"). The Series B Conversion Rate shall be subject to adjustment as set forth
in Section 3(d).

<PAGE>

                                 (b)  Automatic Conversion. Each share of Series
B Preferred shall  automatically be converted into shares of Common Stock at the
Series B  Conversion  Rate at the time in effect  for such  share on the  second
anniversary of the filing of these Articles of Amendment with the Virginia State
Corporation Commission.

                                 (c)  Mechanics of Conversion. Before any holder
of Series B  Preferred  shall be  entitled  to convert  the same into  shares of
Common Stock, he shall surrender the certificate or certificates therefor,  duly
endorsed,  at the office of the  Corporation  or of any transfer  agent for such
series of Series B Preferred,  and shall give written notice to the  Corporation
at its principal corporate office, of the election to convert the same and shall
state therein the name or names in which the  certificate  or  certificates  for
shares of Common  Stock are to be issued.  The  Corporation  shall,  immediately
thereafter,  issue  and  deliver  at such  office  to such  holder  of  Series B
Preferred,  or to the nominee or  nominees  of such  holder,  a  certificate  or
certificates for the number of shares of Common Stock to which such holder shall
be  entitled as  aforesaid.  Such  conversion  shall be deemed to have been made
immediately  prior to the close of business on the date of such surrender of the
shares of Series B Preferred to be converted, and the person or persons entitled
to receive the shares of Common Stock  issuable  upon such  conversion  shall be
treated  for all  purposes  as the record  holder or  holders of such  shares of
Common  Stock  as of such  date.  If the  conversion  is in  connection  with an
acquisition or an underwritten offering of securities registered pursuant to the
Securities  Act of 1933, as amended,  the  conversion  may, at the option of any
holder tendering such Series B Preferred for conversion, be conditioned upon the
closing of such  acquisition or the closing with the underwriters of the sale of
securities  pursuant to such offering,  in which event the person(s) entitled to
receive  Common Stock upon  conversion  of such Series B Preferred  shall not be
deemed to have converted such Series B Preferred until  immediately prior to the
closing of such acquisition or such sale of securities.

                                 (d)  Conversion Rate  Adjustments  of  Series B
Preferred  for Certain  Splits and  Combinations.  The Series B Conversion  Rate
shall be subject to adjustment from time to time as follows:

                                      (i)    Stock Splits and Dividends.  In the
event the Corporation  should at any time or from time to time fix a record date
for the  effectuation  of a split or  subdivision of the  outstanding  shares of
Common Stock or the determination of holders of Common Stock entitled to receive
a dividend or other distribution payable in additional shares of Common Stock or
other securities or rights  convertible into, or entitling the holder thereof to
receive directly or indirectly,  additional shares of Common Stock  (hereinafter
referred to as "Common Stock Equivalents")  without payment of any consideration
by such holder for the  additional  shares of Common  Stock or the Common  Stock
Equivalents  (including  the  additional  shares of Common Stock  issuable  upon
conversion  or exercise  thereof),  then, as of such record date (or the date of
such dividend,  distribution,  split or subdivision if no record date is fixed),
the Series B Conversion Rate shall be appropriately  adjusted so that the number
of shares of Common  Stock  issuable  on  conversion  of each  share of Series B
Preferred  shall be increased in proportion to such increase of the aggregate of
shares of Common  Stock  outstanding  and the  number  of shares  issuable  with
respect to such Common Stock Equivalents.

                                       2
<PAGE>

                                      (ii)   Reverse Stock Splits. If the number
of shares of Common Stock  outstanding at any time is decreased by a combination
of the outstanding  shares of Common Stock,  then,  following the record date of
such  combination,  the  Series B  Conversion  Rate for each  share of  Series B
Preferred shall be appropriately adjusted so that the number of shares of Common
Stock  issuable  on  conversion  of each  share of Series B  Preferred  shall be
decreased in proportion to such decrease in outstanding shares of Common Stock.

                                      (e)    Other Distributions.   In the event
the  Corporation  shall  declare a  distribution  payable in securities of other
persons,  evidences of indebtedness  issued by the Corporation or other persons,
assets  (excluding  cash dividends) or options or rights then, in each such case
for the purpose of this Section 3(e), the holders of Series B Preferred shall be
entitled to a proportionate  share of any such  distribution as though they were
the  holders of the  number of shares of Common  Stock of the  Corporation  into
which their shares of Series B Preferred are  convertible  as of the record date
fixed for the  determination  of the holders of Common Stock of the  Corporation
entitled to receive such distribution.

                                      (f)    Mergers, etc.   If, at  any time or
from time to time,  there shall be a merger or  consolidation of the Corporation
with or into another corporation, or the sale of all or substantially all of the
Corporation's  properties  and assets to any other person and entity,  then as a
part of such reorganization,  merger,  consolidation or sale, provision shall be
made so that the holder of the Series B Preferred  shall  thereafter be entitled
to receive upon  conversion  of the Series B Preferred,  the number of shares of
capital  stock or other  securities  or property of the  Corporation,  or of the
successor  corporation  resulting from such merger or  consolidation or sale, to
which the holder of shares of Common Stock  deliverable  upon  conversion  would
have been entitled on such reorganization,  merger,  consolidation,  or sale. In
any such case,  appropriate  adjustment  shall be made in the application of the
provisions  of this  section  with  respect to the rights of the  holders of the
Series B Preferred after the  reorganization,  merger,  consolidation or sale to
the end that the provisions of this section (including  adjustment of the Series
B  Conversion  Rate then in  effect  and the  number  of shares of Common  Stock
receivable upon conversion of the Series B Preferred)  shall be applicable after
that event as nearly equivalent hereto as may be practicable.

                                      (g)    Recapitalizations.   If at any time
or from time to time  there  shall be a  recapitalization  of the  Common  Stock
(other than a subdivision,  combination or merger or other transaction  provided
for elsewhere in this Section 3) provision  shall be made so that the holders of
the Series B Preferred  shall  thereafter be entitled to receive upon conversion
of such Series B Preferred the number of shares of stock or other  securities or
property of the  Corporation  or  otherwise,  to which a holder of Common  Stock
deliverable upon conversion  would have been entitled on such  recapitalization.
In any such case, appropriate adjustment shall be made in the application of the
provisions  of this  Section 3 with respect to the rights of the holders of such
Series B Preferred after the  recapitalization to the end that the provisions of
this Section 3  (including  adjustment  of the Series B Conversion  Rate then in
effect and the number of shares  purchasable  upon  conversion  of such Series B
Preferred) shall be applicable  after that event and be as nearly  equivalent as
practicable.

                                      (h)    No Impairment. The Corporation will
not,  by   amendment   of  its   Articles  of   Incorporation   or  through  any
reorganization,  recapitalization,  transfer of assets,

                                       3
<PAGE>

consolidation,  merger,  dissolution,  issue or sale of  securities or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be observed or performed hereunder by the Corporation,  but will at
all times in good faith assist in the carrying out of all the provisions of this
Section  3 and in the  taking  of  all  such  action  as  may  be  necessary  or
appropriate in order to protect the Conversion Rights of the holders of Series B
Preferred against impairment.

                                      (i)   No Fractional Shares and Certificate
as to Adjustments.

                                            (i)    No fractional shares shall be
issued upon the conversion of any share or shares of the Series B Preferred, and
the  number  of shares of Common  Stock to be  issued  shall be  rounded  to the
nearest whole share. The number of shares issuable upon such conversion shall be
determined  on the basis of the total number of shares of Series B Preferred the
holder is at the time  converting  into Common Stock and the number of shares of
Common Stock issuable upon such aggregate conversion.

                                            (ii)   Upon  the  occurrence of each
adjustment  or  readjustment  of the Series B Conversion  Rate  pursuant to this
Section  3,  the  Corporation,  at its  expense,  shall  promptly  compute  such
adjustment or  readjustment  in accordance with the terms hereof and prepare and
furnish to each holder of Series B Preferred a  certificate  setting  forth such
adjustment  or  readjustment  and  showing  in detail  the facts upon which such
adjustment or readjustment is based.  The  Corporation  shall,  upon the written
request at any time of any  holder of shares of a series of Series B  Preferred,
furnish or cause to be furnished to such holder a like certificate setting forth
(A) such adjustment and readjustment,  (B) the new Series B Conversion Rate, and
(C) the  number  of shares of Common  Stock  and the  amount,  if any,  of other
property  which at the time would be received upon the  conversion of a share of
Series B Preferred.

                                      (j)    Notices of Record Date.     In  the
event of any taking by the  Corporation  of a record of the holders of any class
of  securities  for the  purpose of  determining  the  holders  thereof  who are
entitled  to  receive  any  dividend  (other  than a  cash  dividend)  or  other
distribution,  any right to subscribe  for,  purchase or  otherwise  acquire any
shares of stock of any class or any other securities or property,  or to receive
any  other  right,  the  Corporation  shall  send to each  holder  of  Series  B
Preferred,  at least ten (10) days prior to the date specified therein, a notice
specifying  the date on which any such  record is to be taken for the purpose of
such  dividend,  distribution  or right,  and the amount and  character  of such
dividend, distribution or right.

                                      (k)    Reservation  of Stock Issuable Upon
Conversion. The Corporation shall at all times reserve and keep available out of
its  authorized but unissued  shares of Common Stock,  solely for the purpose of
effecting the conversion of the shares of Series B Preferred, such number of its
shares of Common  Stock as shall from time to time be  sufficient  to effect the
conversion of all outstanding  shares of such Series B Preferred;  and if at any
time the number of authorized  but unissued  shares of Common Stock shall not be
sufficient to effect the conversion of all then  outstanding  shares of Series B
Preferred,  in addition  to such other  remedies  as shall be  available  to the
holder of such Series B  Preferred,  the  Corporation  will take such  corporate
action as may, in the  opinion of its  counsel,  be  necessary  to increase  its
authorized but unissued shares of Common Stock to such number of shares as shall
be sufficient

                                       4
<PAGE>

for such purposes,  including,  without limitation,  engaging in best efforts to
obtain the  requisite  shareholder  approval of any  necessary  amendment to the
Corporation's Articles of Incorporation.

                                      (l)    Notices. Any notice required by the
provisions  of this  Section 3 to be given to the  holders of shares of Series B
Preferred shall be deemed given if delivered to such shareholder by a nationally
recognized  overnight  delivery service at his address appearing on the books of
the Corporation.

                          4.     Voting Rights.

                                 (a)  Except  as  provided in   Section  4(b) or
Section 4(c) below,  the holders of record of shares of Series B Preferred shall
be  entitled  to such  number  of votes  for each  share of  Series B  Preferred
standing  in each  such  person's  name on the  stock  transfer  records  of the
Corporation as shall be necessary to entitle the holders of all shares of Series
B Preferred  to vote,  in the  aggregate,  51% of the total  voting power of all
holders of all capital stock of the Corporation.  Promptly  following the fixing
of a record date for each annual or special  meeting of shareholders or prior to
the taking of any  action by  written  consent,  the Board of  Directors  of the
Corporation  (the  "Board")  shall  determine  the  number of votes per share of
Series B Preferred  that each  holder of record of Series B  Preferred  shall be
entitled to cast to implement the foregoing voting provisions. The determination
of such  number of votes by the  Board  shall be final and shall be set forth in
the notice of such meeting of shareholders or notice of consent delivered to the
holders of capital stock of the Corporation.

                                 (b)  Notwithstanding  the provisions of Section
4(a) above,  on any matter set forth in clauses (i) or (ii) below  submitted for
consideration  or action by the  shareholders at any meeting of shareholders (or
by written  consent of shareholders in lieu of meeting) each holder of record of
shares of Series B  Preferred  shall be  entitled  to one vote for each share of
Common  Stock  into  which  such  holder's  shares  of  Series B  Preferred  are
convertible as of the record date for determining  shareholders entitled to vote
on such matter:

                                      (i)    any  sale  of  all or substantially
all  of  the  assets  of the  Corporation  which  values the Corporation at less
than $50,000,000; or

                                      (ii)   any merger (other  than a merger in
which the holders of capital  stock of the  Corporation  before the  transaction
continue to hold more than 50% of the capital stock of the Corporation after the
transaction) or  consolidation  to which the Corporation is a party which values
the Corporation at less than $50,000,000.

         Insofar  as the  consideration  paid in a sale  of  assets,  merger  or
consolidation  referenced in clause (i) or (ii) above consists of property other
than cash,  the value of the  Corporation  shall be  computed  based on the fair
market value of such property as of the applicable record date. In the event any
consideration  in  such  transaction  is to be paid on a  deferred  basis,  such
consideration  shall be valued on a present  value  basis,  applying  a discount
factor of 8%. Any  dispute  concerning  valuation  of the  Corporation  shall be
resolved by an investment banking firm selected by the Board.

                                      (c)    Notwithstanding  the  provisions of
Section 4(a) above,  each holder of record of shares of Series B Preferred shall
be entitled to one vote for each share

                                       5
<PAGE>

of Common  Stock into  which  such  holder's  shares of Series B  Preferred  are
convertible  at such time as the  holders of Series B Preferred  default  beyond
applicable grace and cure periods on any obligation they have to purchase Series
B Preferred after the date of these Articles of Amendment.

         III.     The capital stock of the Corporation shall have no par value.

         IV. The date of adoption of the  amendments  herein  was  September 6 ,
2000.  Such  amendments  were  duly  adopted  by the Board of  Directors  of the
Corporation at a meeting held on  September 6 , 2000, pursuant to the provisions
of the Virginia Stock  Corporation Act. The foregoing  amendments do not require
shareholder approval.

         IN WITNESS  WHEREOF,  Essex  Corporation  has caused these  Articles of
Amendment to be executed by its President and attested to by its Secretary as of
this 7th day of September, 2000.


                                            ESSEX CORPORATION



                                            By:  /s/ Leonard E. Moodispaw
                                                 ------------------------
                                                              , President

ATTEST:


/s/ Kimberly J. DeChello
------------------------
             , Secretary



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