<PAGE>


                                LEASE AGREEMENT
 
     THIS  INDENTURE OF LEASE  MADE THIS 1st DAY  OF September, 1996 WITNESSETH:
That  CALIFORNIA   MICROWAVE,  INC.   First  Party,   (hereinafter  called   the
'Landlord'), does hereby demise and lease PARAVANT COMPUTER SYSTEMS, INC. Second
Party,  (hereinafter called the  'Tenant'), the premises  known and described as
approximately 17,314 square  feet of  space located in  the building  containing
approximately  40,000 square feet  of space having  a street address  of 1615 W.
NASA BOULEVARD, SUITE E Melbourne, County of Brevard, State of Florida,  located
on the real property as more particularly described in Exhibit A. Tenant may use
any  legal  alternative mailing  address as  deemed  legal by  the U.  S. Postal
Service.
 
     1. TERM. The term of this lease shall be 64 months beginning on the 1st day
of September, 1996, and terminating on  the 31st day December, 2001, unless  the
term hereby demised shall be sooner terminated as hereinafter provided.
 
     2.  RENT. In consideration of said demise,  the Tenant agrees to pay to the
Landlord as rent for said premises as follows:
 
<TABLE>
        <S>                        <C>
        09/01/96 - 11/30/96        $0.00
        12/01/96 - 02/28/97        $1,500.00 per month
        03/01/97 - 08/31/97        $3,000.00 per month
        09/01/97 - 12/31/01        $8,657.00 per month
</TABLE>
 
and $1,197.55 per month as an  escrow payment for taxes and insurance  beginning
September  1, 1997, as set forth  below, plus 6% sales tax  or such sales tax as
may be subsequently provided by Florida  Law, and in addition thereto such  sums
as  may accrue as additional rent hereunder  by virtue of the provisions of this
lease as hereinafter set forth, all payable in cash or its equivalent. All  such
sums  shall be  due and  payable in  advance on  the 1st  day of  each and every
calendar month during said  term at the office  of  CALIFORNIA  MICROWAVE, INC.,
555 Twin Dolphin Drive, Suite 650, Redwood City, CA 94065 or at such other place
as the Landlord from time to time in writing may designate. For purposes of this
lease,  Tenant's pro rata share of building  use and expenses will be calculated
at 43%.
 
     3. ALTERATIONS. The Tenant agrees that Tenant will make no alterations  in,
or  additions or improvements to said premises  without in each case the written
consent of Landlord  first being  had and obtained.  Such consent  shall not  be
unreasonably  withheld or delayed.  Drawings and specifications  of the proposed
alterations shall be submitted  when Tenant requests  the said approval.  Tenant
agrees that Tenant will make all such alterations, additions, or improvements in
or  to premises at the expense of Tenant.  Tenant agrees that in making any such
alterations,  additions,  or  improvements  and  in  occupying  and  using  said
premises,  Tenant will comply with the Building  Code and ordinance of the City,
and all the laws of the State in which said premises are located, pertaining  to
such  work  and/or such  use  or occupancy;  it  being further  agreed  that any
additions, alterations,  or improvements  made by  Tenant (except  only  movable
store  and office furniture and fixtures) shall  become and remain a part of the
building and be and remain the property of Landlord upon the termination of this


                               EXHIBIT 'A'


<PAGE>
<PAGE>
lease or the Tenant's  occupancy of said premises;  provided, however, that  the
Landlord by giving written notice to Tenant at the time consenting to the making
of  any  such  additions, alterations,  or  improvements may  require  Tenant to
restore said premises to the same condition they were in immediately before  the
making  of  such additions, alterations, or  improvements.  The interest  of the
Landlord shall not be subject to  liens for improvements made by Tenant.  Tenant
agrees  that Tenant will  save harmless Landlord from  and against all expenses,
liens, claims, or damages to either property or person which may or might  arise
by  reason  of  the  making  of any  such  repairs,  alterations,  additions, or
improvements. Attached  is a  sketch  of the  improvements Paravant  intends  to
install  immediately upon occupancy of the lease which California Microwave will
approve unless in violation of any of the terms above (Exhibit B).
 
     4. SECURITY DEPOSIT. Intentionally deleted. See Paragraph 39.
 
     5. LATE PAYMENT. Any payment of rent  or escrow for taxes and insurance  or
any  other payment  required hereunder which  is received by  Landlord more than
seven (7) days after the same is due shall incur a late payment penalty of  five
percent  (5%) of  the payment due  for any  such late payment.  The said penalty
shall be applied for each month that any payment remains unpaid. All payments to
the Landlord may be applied to  any late payment penalties before being  applied
to rent. Date of payment is agreed to be the date of postmark.
 
     6.  ESCROW. In addition  to all other obligations  set forth herein, Tenant
agrees to  pay to  Landlord to  hold  in escrow  for the  payment of  taxes  and
insurance  1/12th of the yearly premium for  hazard insurance plus 1/12th of the
yearly taxes as estimated by Landlord. These  amounts shall be paid at the  same
time  and in the same manner as rent provided herein above. Landlord shall apply
such fund to  the payment  of taxes  and insurance, and  if the  amount held  by
Landlord  is not sufficient to pay taxes  and insurance as they fall due, Tenant
shall pay to Landlord any amount necessary to make up the deficiency within  ten
(10) days from written notice by Landlord. Landlord shall not be required to pay
any interest on the moneys so held. Landlord shall provide a complete accounting
of  all  escrow funds  annually by  November 30th.  Landlord shall  maintain and
tenant shall pay for fire and extended coverage insurance on the premises in not
less than ninety percent (90%) of the full replacement cost of the  improvement.
Both parties acknowledge that the purchase of this insurance must be done by the
Landlord  as  multiple occupancies  are involved.  Tenant  shall be  entitled to
examine the policies of all of the occupants of his building to satisfy  himself
that  rates are kept competitive. If  policies are found uncompetitive, Landlord
will accept the lowest bidding policy if  it is 10 percent or greater less  than
Landlord's  policy.  This  policy must  be  from a  similar  reputable insurance
company with at least the same rating. Tenant shall only pay for that portion of
the building under lease according lo the fire rating assigned to his use.
 
     7. TENANT'S INSURANCE. During the  term of  this lease,  and any  extension
thereof, Tenant shall, at its own cost and expense, maintain and provide general
liability  insurance coverage for the benefit and protection of Tenant. Landlord
and Landlord's managing  agent, as their  interest may appear  in an amount  not
less  than $2,000,000 combined  single limit for  personal injury, bodily injury
and  property   damage  against   liability  of   Tenant  and   its   authorized
representatives  arising  out  of or  in  connection  with the  Tenant's  use or
occupancy  of   the  leased   premises   or  the   common  area   Landlord   and
 

<PAGE>
<PAGE>
Landlord's  managing agent shall  be named as additional  insured parties in all
such insurance policies, as their respective interest may appear. Such insurance
shall be  with a  company or  companies reasonably  acceptable to  Landlord  and
admitted  to do business in the state in which the building is located. All such
insurance policies shall be maintained by Tenant in full force and effect and 30
days' written notice to Tenant prior to cancellation or material change shall be
provided to Landlord.  Should Tenant fail  to carry such  insurance and  furnish
Landlord  with  the  required  insurance  certificates  after  notification from
Landlord to do so, Landlord  shall have the right  to obtain such insurance  and
Tenant shall pay the cost thereof to Landlord upon demand.
 
     8.  SIGN. Paravant may install 22  foot long by 3 foot  wide by 1 foot deep
lighted sign on the north face of  the building occupied by Paravant at its  own
expense to identify the tenancy. Paravant may also install a sign on the rear of
the  building for deliveries. These signs are  subject to any rule or regulation
governing the placement, size or type of signs placed by the local governments.
 
     9. RENT INCREASES. Beginning September 1, 1998, the basic rent as set forth
in Paragraph  2 of  this lease  shall be  increased by  an amount  equal to  the
national  annual consumer price index (CPI-U)  as computed from each anniversary
date. The increase  will be compounded  so that each  successive year the  basic
rent  is more than the basic rent for the previous year, and such increase shall
be capped at 5%  in any year,  but shall be cumulative  from September 1,  1998.
Landlord  will give 30 days  notice in any increase  under this clause including
the calculation.
 
     10. WATER USE. Landlord agrees to provide water for Tenant. Landlord  shall
apportion  the water use on a per square  footage basis and Tenant agrees to pay
initially the amount of $173.14 per  month to reimburse Landlord for water  use.
Landlord reserves the right to install and maintain a separate water meter.
 
     11. USE. The Tenant agrees that said premises shall be used for the purpose
of  office and manufacturing and no other purpose and shall be used and occupied
in a careful and proper manner, and that no waste will be committed or permitted
upon, or any  damage be done  to the said  premises and Tenant  agrees that  the
Tenant  will  not conduct,  nor permit  to  be conducted,  on said  premises any
business or commit  or permit  any act which  is or  may be contrary  to, or  in
violation  of any law of  the United States or Florida  or any ordinances of the
City or other governmental jurisdiction in which said premises are located.
 
     12. SUBLEASES.  The Tenant  agrees that  the Tenant  will not  sublet  said
premises  or any  part thereof  without the consent  in writing  of the Landlord
first had obtained. Such consent will not be unreasonably withheld. The Landlord
agrees to allow Tenant, upon written  request from Tenant, to assign this  lease
to  a parent  company or  a subsidiary company  if the  Tenant is  involved in a
corporate restructure.  Such  assignment  shall  be permitted  so  long  as  the
assignee  is of equal or superior credit  strength in the sole discretion of the
Landlord.
 

<PAGE>
<PAGE>
     13. DEFAULT. The  occurrence of  any of  the following  shall constitute  a
material default and breach of this Lease by Tenant:
 
        (A)  Any failure by  Tenant to pay  the rent or  any other monetary sums
required to be paid  hereunder (where such failure  continues for ten (10)  days
after  written notice by Landlord to Tenant),  and postmark shall be evidence of
payment. Landlord shall only be required to provide written notice to Tenant two
times per year. Further written notice is hereby waived;
 
        (B) The abandonment or vacation of the premises by Tenant;
 
        (C) A failure by  Tenant to observe and  perform any other provision  of
this  lease to be observed or performed  by Tenant, where such failure continues
for twenty  (20)  days after  written  notice  thereof by  Landlord  to  Tenant;
provided,  however, that  if the  nature of  the default  is such  that the same
cannot reasonably be cured within said twenty (20) day period, Tenant shall  not
be deemed to be in default if Tenant shall within such period commence such cure
and thereafter diligently prosecute the same to completion;
 
     (D)  The making by Tenant of  any general assignment or general arrangement
for the benefit of creditors; the filing  by or against Tenant of a petition  to
have Tenant adjudged bankrupt or of a petition for reorganization or arrangement
under  any law relating to  bankruptcy (unless, in the  case of a petition filed
against Tenant, the same is dismissed  within sixty (60) days); the  appointment
of  a trustee or  receiver to take  possession of substantially  all of Tenant's
assets located at  the Premises  or of Tenant's  interest in  this Lease,  where
possession is not restored to Tenant within thirty (30) days; or the attachment,
execution  or other  judicial seizure  of substantially  all of  Tenant's assets
located at  the Premises  or of  Tenant's  interest in  this Lease,  where  such
seizure is not discharged within thirty (30) days.
 
     14.  DEFAULT REMEDIES. In the event of  any such material default or breach
by Tenant, Landlord may, at any time thereafter without limiting Landlord in the
exercise of any rights or remedy at law or in equity which Landlord may have  by
reason of such default or breach:
 
        (A)  Maintain this Lease in  full force and effect  and recover the rent
and other  monetary charges  as they  become due,  without terminating  Tenant's
right  to possession  irrespective of  whether Tenant  shall have  abandoned the
Premises. In the  event Landlord  elects not  to terminate  the Lease,  Landlord
shall  have the right  to attempt to re-let  the premises at  such rent and upon
such conditions and for such a term and to do all acts necessary to maintain  or
preserve  the Premises as Landlord deems  reasonable and necessary without being
deemed to have elected to terminate the Lease, including removal of all  persons
and  property from the  Premises; such property  may be removed  and stored in a
public warehouse or elsewhere at the cost  of and for the account of Tenant.  In
the  event any such re-letting occurs,  this Lease shall terminate automatically
upon the new Tenant's  taking possession of  the Premises. Notwithstanding  that
Landlord  fails to elect to eliminate the  Lease initially, Landlord at any time
during the term of this lease may  elect terminate this Lease by virtue of  such
previous default of Tenant.
 

<PAGE>
<PAGE>
        (B) Terminate Tenant's right to possession by any lawful means, in which
case   this  Lease  shall  terminate  and  Tenant  shall  immediately  surrender
possession of the Premises to Landlord. In such event Landlord shall be entitled
to recover from Tenant  all damages incurred by  Landlord by reason of  Tenant's
default  including, without limitation thereto, the  following: (i) the worth at
the time of award of any unpaid rent  which had been earned at the time of  such
termination; plus (ii) any other amount necessary to compensate Landlord for all
the  detriment proximately caused by Tenant's failure to perform its obligations
under this lease or which  in the ordinary course of  events would be likely  to
result  therefrom  plus  (iii) at  Landlord's  election, such  other  amounts in
addition to or in lieu of the foregoing as may be permitted from time to time by
applicable State law. Upon  any such re-entry Landlord  shall have the right  to
make any reasonable repairs, alterations or modifications to the Premises, which
Landlord  at its sole discretion deems reasonable  and necessary. As used in (i)
above, the 'worth at the time of award' is computed by allowing interest at  the
rate of fifteen percent (15%) per annum from the date of default. As used in (i)
and (ii) the 'worth at the time of award' is computed by discounting such amount
at  the discount rate of the U. S.  Federal Reserve Bank of Atlanta, Georgia, at
the time  of award  plus one  percent (1%).  The term  'rent', as  used in  this
Paragraph  13, shall be deemed to be and to mean the rent to be paid pursuant to
Paragraph 2 and all other monetary sums  required to be paid by Tenant  pursuant
to the terms of the Lease.
 
     15.  PAYMENTS AT  TERMINATION. No  payments of money  by the  Tenant to the
Landlord after the termination of this lease, in any manner, or after the giving
of any notice (other than a demand for the payment of money) by the Landlord  to
the  Tenant shall reinstate, continue or extend the term of this lease or affect
any notice given  to the Tenant  prior to the  payment of such  money, it  being
agreed  that after the service of notice or  the commencement of a suit or after
final judgment granting the Landlord  possession of said Premises, the  Landlord
may  receive and collect  any sums of  rent due or  any other sums  of money due
under the terms of this lease, and the payment of such sums of money, whether as
rent or otherwise,  shall not  waive said  notice or  in any  manner affect  any
pending suit or any judgment theretofore obtained.
 
     16.  PERSONAL PROPERTY.  All personal property  of any  kind or description
whatsoever in the demised premises shall be  at the Tenant's sole risk, and  the
Landlord  shall not be  liable for any damage  done to or  loss of such personal
property except as attributable to Landlord or Landlord's agents: or for  damage
or  loss suffered by the  business or occupation of  the Tenant arising from any
act or neglect  of co-tenants or  other occupants  of the building  or of  their
employees  or  of other  persons; or  from bursting,  overflowing or  leaking of
water, sewer, or steam pipes, or from  the heating or plumbing fixtures or  from
electric  wires or from gas,  or odors or caused  in any other manner whatsoever
except in the case of negligence or acts of the Landlord.
 
     17. RIGHT TO EFFECTS. If the Tenant  shall fail to remove all effects  from
said  premises upon the termination  of this lease or  any cause whatsoever, the
Landlord at the option of  the Landlord, may remove the  same in any manner that
the  Landlord shall choose, and store the  said effects without liability to the
Tenant for loss thereof, and the Tenant agrees to pay the Landlord on demand any
and all expenses incurred  in said removal, including  court costs and  attorney
fees  and storage charges on such effects for  any length of time the same shall
be in the Landlord's possession or the Landlord
 

<PAGE>
<PAGE>
at the option of the Landlord, without  notice may sell said effects, or any  of
the  same, at  private sale  and without  legal process, for such  prices as the
Landlord may obtain and  apply the proceeds  of such sale  upon any amounts  due
under  this lease from the Tenant to  the Landlord and upon the expense incident
to the removal and sale of said effects, rendering the surplus, to the Tenant.
 
     18. DAMAGE TO  PREMISES. In  the event of  the partial  destruction of  the
Premises  or the Building  of which the  Premises constitutes a  part during the
term of the  Lease, Landlord  shall forthwith  make such  repairs provided  such
repairs can be made within sixty (60) days under the laws and regulations of the
public  authorities,  but such  partial  destruction (including  any destruction
necessary to make  such repairs) shall  in no  event annul or  void this  Lease,
except  that Tenant shall be entitled to a proportionate reduction in rent while
such repairs are being made, such reduction to be based upon the extent (if any)
to which the  making of  such repairs  materially interferes  with the  business
carried  on by  Tenant in the  Premises. If  such repairs cannot  be made within
sixty (60)  days,  Landlord  may  at  his option  make  such  repairs  within  a
reasonable  time, in  which event  this Lease shall  continue in  full force and
effect, except that the rent shall be abated in accordance with the  aforestated
procedure  and provided that Landlord notifies Tenant  of his intention to do so
within thirty (30)  days after the  partial destruction. In  the event  Landlord
does  not so elect to  make such repairs which cannot  be made within sixty (60)
days, or such  repairs cannot be  made under  such laws and  regulations, or  if
Landlord elects to make such repairs and such repairs cannot be completed within
120  days, then and in that event, this lease may be terminated at the option of
either party with thirty days prior written notice. Notwithstanding anything  to
the contrary contained in this paragraph, Landlord shall not have any obligation
whatsoever  to  repair,  reconstruct or  restore  the Premises  when  the damage
resulting from any casualty covered under this paragraph occurs during the  last
twelve  (12) months of the  term of this Lease  or any extension thereof. Except
for abatement of rent, if any, Tenant  shall have no claim against Landlord  for
any  damage  suffered  by reason  of  any  such damage,  destruction,  repair or
restoration, nor shall  Tenant have  the right to  terminate this  lease as  the
result  of any statutory provision now or  hereafter in effect pertaining to the
damage and  destruction of  the Premises  or the  Building except  as  expressly
provided herein.
 
     19.  OUTSIDE ACTIVITIES. No  work activity involving the  use for which the
building is  rented, or  with respect  to repair  or servicing  of  automobiles,
trucks, or other equipment shall be performed outside the building or around the
premises  at any time. Empty pallets or  other debris left outside for more than
ten (10) days may be removed by the Landlord at Tenant's expense.
 
     20.  PROHIBITED  PARKING.  Without  the  Landlord's  specific  consent,  no
automobiles,  trucks, boats, or other equipment or vehicles may be parked around
the building for  any more  than five  (5) days  without being moved. No  trash,
garbage  or other items may be stored  outside the buildings without the consent
of the Landlord, unless such trash is inside garbage containers.
 
     21. CONDITION  OF PREMISES.  The Tenant  has examined  the premises  herein
demised  and said  premises are  known to the  Tenant to  be in  good repair and
condition, and the Tenant hereby accepts the same  in good condition and  repair
except  as herein otherwise specified and no representations as to the condition
or repair
 

<PAGE>
<PAGE>
thereof have been  made by the  Landlord prior to  or at the  execution of  this
lease that are not herein expressed or endorsed hereon:
 
        (A)  Landlord agrees to supply  maintenance of the grounds, specifically
including but not limited  to mowing of grass,  watering grass, trimming  shrubs
and  picking up loose trash.  Tenant agrees to pay the  costs of this service as
additional rent on the date each rental  payment is due. The cost is  determined
on  a square footage basis and with regard to the premises described hereinabove
is $303.00 per month, subject to annual adjustment based upon actual cost.
 
        (B) Tenant  agrees to  contract for  garbage and  dumpster services  and
Tenant agrees to pay for such services.
 
     22.  WAIVER. No waiver of any condition or covenant of this lease by either
party hereto shall be  deemed to imply  or constitute a  further waiver by  such
party or any other condition or covenant of said lease.
 
     23. MAINTENANCE AND REPAIRS.
 
        (A)  The Tenant shall pay for  all sewage disposal services, water, gas,
heat, electric current and other utilities furnished it or consumed by it, in or
upon the leased premises  at rates set  by local public  utility as approved  by
Public  Authority having jurisdiction, and will  keep the interior of the leased
premises and appurtenances in good order and  repair, and in a clean, safe,  and
healthy  condition (excepting, however, all repairs  made necessary by reason of
fire or  other unavoidable  casualty)  at its  own  cost and  expense.  Landlord
warrants  that water,  sewer, and  electric power  are available  at the subject
premises at the beginning of the Tenant's obligation to pay rent hereunder.
 
        (B) All glass,  both exterior and  interior of said  premises is at  the
sole  risk of Tenant and any glass broken during the term of this lease is to be
promptly replaced with  glass of the  same kind  and quality at  the expense  of
Tenant.
 
        (C)  This lease is  a net lease,  and the parties  hereto agree that all
costs, expenses,  repairs,  and maintenance  of  the premises  are  at  Tenant's
expense  except  that Landlord,  at its  sole expense,  shall keep  the exterior
foundations and walls, down spouts, gutters, roof, and the underground  plumbing
systems  of the Premises, HVAC, electrical facilities underground or outside the
Premises in good order, condition and repair.
 
     24. INDEMNITY.
 
        (A) Indemnity. Tenant  shall indemnify and  hold harmless Landlord  from
and  against any and all claims arising from Tenant's use of the Premises or the
conduct of its business or from any  activity work, or thing done, permitted  or
suffered by Tenant in or about the Premises and shall further indemnify and hold
Landlord harmless from and against any and all claims arising from any breach or
default  in the performance of  any obligation on Tenant's  part to be performed
under the terms of this Lease, or arising from any act or negligence of  Tenant,
or any at its agents, contractors or employees, and from and against any and all
costs, reasonable attorney's fees,
 

<PAGE>
<PAGE>
expenses and liabilities incurred in connection with such claim or any action or
proceeding  brought thereon;  and in  case any  action or  proceeding be brought
against Landlord by reason of any  such claim, Tenant upon notice from  Landlord
shall  defend the same at Tenant's expense by counsel reasonably satisfactory to
Landlord, provided however, that Tenant shall not be liable for damage or injury
occasioned by the negligent or intentional  acts of Landlord and its  designated
agents or employees unless covered by insurance Tenant is required to provide.
 
        (B)  Exemption of Landlord from Liability.  Landlord shall not be liable
for injury  or  damage which  may  be sustained  by  the person,  goods,  wares,
merchandise  or property of Tenant, its employees, invitees or customers, or any
other person in or about the Premises  caused by or resulting from fire,  steam,
electricity, gas, water or rain, which may leak or flow from or into any part of
the  Premises, or  from breakage, leakage,  obstruction or other  defects of the
pipes, sprinklers,  wires, appliances,  plumbing, air  conditioning or  lighting
fixtures  of the same, whether the said damage or injury results from conditions
arising upon the Premises or  upon other portions of  the Building of which  the
Premises are a part, or from other sources. Landlord shall not be liable for any
damages  arising from any  act or neglect of  any other Tenant  (if any) of such
building. Notwithstanding anything to the contrary Landlord  shall be liable  if
such  damage or injury  is caused by  the gross negligence  at the Landlord, its
agents, employees, contractors or subcontractors.
 
        (C) In the event that Landlord should ever be made a party to any  claim
for  hazardous waste  cleanup of the  property subject  to this lease  or to any
litigation for  claims by  others based  on hazardous  substances on  or in  the
property,  and the hazardous  substance resulted from the  actions or failure of
action by the Tenant, Tenant will hold the Landlord  harmless from the costs  of
such  cleanup and  the expenses  and cost of  such litigation  and any resulting
awards or compromises.
 
     25. LEASE SUBORDINATION.  Tenant agrees  to subordinate this  lease to  any
mortgage  or blanket mortgage placed on  the industrial park, provided only that
so long as Tenant faithfully discharges its obligations under the terms of  this
lease:  (1) Its  tenancy will not  be disturbed  nor this lease  affected by any
default under such mortgage; (2) The  right of Tenant hereunder shall  expressly
survive  and shall not  be cut off; and  (3) This lease  shall, in all respects,
continue in full  force and effect,  and holder of  such mortgage shall  provide
Tenant with written acknowledgment of such non-disturbance.
 
     26.  ENTRY BY LANDLORD. Landlord reserves  and shall during normal business
hours have the right to enter the  Premises to inspect the same, to submit  said
Premises   to   prospective  purchasers   or   tenants,  to   post   notices  of
non-responsibility and 'for lease'  signs, and to alter,  improve or repair  the
Premises  and any portion of the Building without abatement of rent, and may for
that purpose erect scaffolding and  other necessary structures where  reasonably
required  by the  character of  the work to  be performed,  always providing the
entrance to the  Premises shall not  be blocked thereby,  and further  providing
that  the  business of  Tenant shall  not be  interfered with  unreasonably. All
Landlord work or repairs  must be completed promptly.  Tenant hereby waives  any
claim  to  damages  for any  injury  or  inconvenience to  or  interference with
Tenant's business, any loss of occupancy or quiet enjoyment of the Premises, and
any other loss occasioned thereby. For each of the aforesaid purposes,  Landlord
shall at all
 

<PAGE>
<PAGE>
times  have and retain a key with which to  unlock all of the doors in, upon and
about the Premises, excluding Tenant's vaults and safes, and Landlord shall have
the right to use any and all means  which Landlord may deem proper to open  said
doors in an emergency in order to obtain entry to the Premises, and any entry to
the Premises obtained by Landlord by said means shall not be construed or deemed
to  be a forcible or unlawful  entry into, or a detainer  of, the Premises or an
eviction  of  Tenant  from  the  Premises  or  any  portion  thereof.   Landlord
acknowledges  that Tenant is  a DOD classified  facility and may  at any time be
storing classified  information and  therefore shall  enter the  premises  after
normal business hours on an emergency basis only.
 
     27. ESTOPPEL CERTIFICATE
 
        (A)  Tenant shall at  any time upon  not less than  ten (10) days' prior
written notice  from Landlord  execute, acknowledge  and deliver  to Landlord  a
statement  in writing (i) certifying  that this Lease is  unmodified and in full
force and effect (or, if modified,  stating the nature of such modification  and
certifying that this Lease, as so modified, is in full force and effect) and the
date  to which the rent and other charges  are paid in advance, if any, and (ii)
acknowledging that there are not, to Tenant's knowledge, any uncured defaults on
the part of Landlord hereunder, or specifying such defaults if any are  claimed.
Any  such statement may be conclusively relied upon by any prospective purchaser
or encumbrancer of the Premises.
 
        (B) Tenant's failure to deliver such statement within such time shall be
conclusive upon Tenant (i) that this Lease is in full force and effect,  without
modification  except as may be  represented by Landlord, (ii)  that there are no
uncured defaults in Landlord's  performance, and (iii) that  not more than  five
(5) month's rent has been paid in advance.
 
        (C)  If Landlord desires  to finance or refinance  said Premises, or any
part thereof, or  any Building  of the  Premises may  be a  part, Tenant  hereby
agrees to deliver to any lender designated by Landlord such financial statements
of  Tenant as may be  reasonably required by such  lender. Such statements shall
include the past three years' financial statements of Tenant. All such financial
statements shall be received  by Landlord in confidence  and shall be used  only
for the purposes herein set forth.
 
        (D)  In the  event of  a sale  or conveyance  by Landlord  of Landlord's
interest in  the Premises  other than  a transfer  for security  purposes  only,
Landlord  shall be relieved from and after the date specified in any such notice
of transfer of all obligations and  liabilities accruing thereafter on the  part
of the Landlord, provided that any funds in the hands of Landlord at the time of
transfer  in which Tenant  has an interest  shall be delivered  to the successor
Landlord. This Lease shall not be affected  by any such sale, and Tenant  agrees
to  attorn  to the  purchaser or  assignee  provided ail  Landlord's obligations
hereunder are assumed in writing by the transferee.
 
        28. ENTIRE  AGREEMENT.  This instrument,  along  with any  exhibits  and
attachments hereto, constitutes the entire agreement between Landlord and Tenant
relative to the Premises and this Agreement and the exhibits and attachments may
be  altered, amended or revoked only by  an instrument in writing signed by both
Landlord and  Tenant.  Landlord  and  Tenant agree  hereby  that  all  prior  or
contemporaneous oral agreements between and among themselves and their agents or
representatives
 

<PAGE>
<PAGE>
relative  to  the leasing  of  the Premises  are merged  in  or revoked  by this
Agreement.
 
     29. SEVERABILITY.  If any  term or  provision of  this Lease  shall to  any
extent  be determined  by a  court of  competent jurisdiction  to be  invalid or
unenforceable, the remainder of  this Lease shall not  be affected thereby,  and
each  term and  provision of this  Lease shall  be valid and  enforceable to the
fullest extent permitted by law.
 
     30. COSTS OF SUIT.
 
        (A) If Tenant or Landlord shall bring any action for any relief  against
the  other, declaratory  or otherwise, rising  out of this  Lease, including any
suit by Landlord for  the recovery of  rent or possession  of the Premises,  the
losing party shall pay the successful party a reasonable sum of attorneys' fees,
including  appellate attorneys' fees,  which shall be deemed  to have accrued on
the commencement of such action and shall be paid whether or not such action  is
prosecuted to judgment.
 
        (B)  Should  Landlord,  or its  agents  or employees,  without  fault on
Landlord's part, be made a  party to any litigation  instituted by Tenant or  by
any  third party against  Tenant, or by  or against any  person holding under or
using the Premises by license of Tenant, or for the foreclosure of any lien  for
labor  or  material furnished  to  or for  Tenant or  any  such other  person or
otherwise arising out of or resulting from  any act or transaction of Tenant  or
of  any such person, Tenant covenants to  save and hold Landlord, its agents and
employees, harmless from any judgment rendered against Landlord, its agents  and
employees,  or the  Premises or  any part thereof,  and all  costs and expenses,
including reasonable attorneys' fees  incurred by Landlord  in or in  connection
with such litigation.
 
     31.  HEATING AND  AIR CONDITIONING  MAINTENANCE. Tenant  agrees to contract
with a licensed  air conditioning  contractor to  maintain the  heating and  air
conditioning units and keep them in good working order.
 
The firm shall:
 
1)  Regularly service the air conditioning unit(s) on the leased premises on the
following basis:
 
     Every 90 days:
                    Change Filters
                    Adjust belts (if required)
                    Check for loose or worn bearings
                    Check for proper refrigerant charge
     Every 6 months:
                    Lubricate indoor/outdoor fan motor bearings
                    Clean evaporator coils
                    Performance test
 
     2) Perform  emergency and  extraordinary repairs  on the  air  conditioning
unit(s).
 
     3)  Keep detailed record  of all services performed  on the leased premises
and prepare a yearly service report to  be furnished to the Tenant and  Landlord
of each calendar year.
 

<PAGE>
<PAGE>
     32.  AGENCY DISCLOSURE. The Landlord,  Cunningham, Ingram & Anderson, Inc.,
and Bruce Ingram, Licensed Real  Estate Broker, Robert C. Stuhlmiller,  Licensed
Real Estate Broker, and Henderson Southeast Corporation hereby acknowledge that,
prior  to execution  of this lease,  notice has  been given to  the Tenant, that
Bruce Ingram, Broker, and Robert  C. Stuhlmiller, Broker represent the  Landlord
exclusively and shall receive their compensation from the Landlord.
 
(Signature/Initial)
                                                    RICHARD P. MCNEIGHT 
__________________________________          ____________________________________
Landlord                                    Tenant

 
     33.  RADON  GAS  --  Notice to  Prospective  Purchaser/Tenant.  Radon  is a
naturally occurring radioactive gas that when  it has accumulated in a  building
in sufficient quantities, may present health risks to persons who are exposed to
it over time. Levels of radon that exceed federal and state guidelines have been
found  in buildings in Florida. Additional information regarding radon and radon
testing may be obtained from your county public health unit.
 
     34. CONDITION OF THE PREMISES. The premises are leased in 'as-is' condition
except that the Landlord, at its expense, will do the following:
 
      Restore the firewall separation which has two openings.
 
      Split the existing electric service so  that the 17,314 square feet has  a
      separate meter.
 
      Landlord will remove all fixtures and leave space in broom clean condition
      including the building surroundings.
 
      Tenant  may use the  telephone closet to install  its telephone system and
      security system without charge.
 
      Tenant may use the building vacuum system.
 
This is the limit of the  Landlord's obligation for improvements. Landlord  will
complete  ail of the  above improvements within  14 days of  the signing of this
lease.
 
     35. ADA-ELEVATOR. Tenant will  cooperate with Landlord  to comply with  the
necessary  modifications to mezzanine for regulatory compliance. In the event an
elevator is required, Landlord will pay  for the installation and amortize  such
cost  (estimated  $30,000  -- $35,000)  with  interest compounded  at  eight (8)
percent per  annum  over a  10-year  period as  additional  rent to  Tenant.  At
termination of this lease, Tenant will have no further obligation to pay for ADA
Elevator.
 
     36.  FIRST RIGHT OF  REFUSAL. Upon receipt  of a bona  fide lease offer via
letter of intent, Paravant will  have two (2) working  days to match same.  This
right  applies to all  vacant space east  of the original  demised tenancy. This
right expires September 1, 1997. Thereafter, and for the term of the lease, upon
receipt of  notice to  vacate  from a  tenant not  in  default of  their  lease,
Paravant will be offered, and have five  (5) working days to lease said space at
the then going fair market rental rate for similar space in the area.
 

<PAGE>
<PAGE>
     37.  PARKING. Sixty-five (65) parking spaces will be available at large for
Paravant's exclusive use. Landlord will  investigate the capability to  increase
the  number of spaces including the use of parallel spaces in circulation. There
will be four  to six reserved  spaces directly in  front of Paravant's  tenancy.
Additional spaces are available for use on a non-exclusive basis.
 
     38.  Landlord  represents that  building is  in  compliance with  all laws,
rules, regulations and Code at lease inception.
 
     39. ADVANCED RENT. $34,628.00  for advanced rent is  due at lease  signing.
This sum is to be applied to the balance of the net rental for the last four (4)
months of this lease, May through August, 2002.
 
        IN  WITNESS WHEREOF, Landlord and Tenant  have executed this lease as of
the day and year 9/26/96.
 
Signed, sealed and
delivered in the presence of:          CALIFORNIA MICROWAVE, INC.



      JOAN M. ZEPZAUER                        [Signature]
__________________________________     BY:______________________________________
Witness as to Landlord                    Title: EVP & CFO



   ETTY A. SAYLES
__________________________________
Witness as to Landlord


                                          PARAVANT COMPUTER
                                          SYSTEMS, INC


                                       BY:       RICHARD P. MCNEIGHT 
__________________________________        ______________________________________
Witness as to Tenant                      Title: President


__________________________________
Witness as to Tenant


<PAGE>

<PAGE>

                  ASSIGNMENT AND ASSUMPTION OF LEASE AGREEMENT
                  --------------------------------------------

     This  Agreement  is  made this  8  day  of October,  1996,  by  and between
CALIFORNIA MICROWAVE, INC.  (the successor by  merger to SATELLITE  TRANSMISSION
SYSTEMS,  INC.) (hereinafter  called 'Assignor') and  SYMETRICS INDUSTRIES, INC.
(hereinafter called 'Assignee').
 
                                   RECITALS:
 
     A. Assignor entered into a Lease  Agreement dated September 1, 1996 by  and
between  Assignor and  Paravant Computer Systems,  Inc. and also  entered into a
month to month lease with AT&T (collectively, the 'Lease Agreements') for  space
located at 1615 West Nasa Boulevard, Melbourne, Florida; and
 
     B.  Assignor desires  to assign  to Assignee  all of  its right,  title and
interest in said  Lease Agreements  to Assignee  upon the  terms and  conditions
herein set forth.
 
     NOW,  THEREFORE, in consideration of the mutual covenants herein contained,
it is agrees as follows:
 
        1. Assignor does hereby assign to  Assignee all of its right, title  and
interest in the Lease Agreements to Assignee.
 
        2. Assignee does hereby unconditionally and absolutely assume all of the
obligations of Assignor under the Lease Agreements.
 
        3. This Assignment shall be in addition to, and not a limitation of, any
other  liability  or obligation  which Assignee  may have  to Assignor  or which
Assignor may have to Assignee.
 
        4. This Agreement shall  inure to the benefit  of Assignor and  Assignee
and their respective heirs, personal representatives, successors and assigns.
 
     IN WITNESS WHEREOF, the parties have duly executed this Agreement as of the
day and year first above written.

 
                                           ASSIGNOR:
 
                                           CALIFORNIA MICROWAVE, INC.
 

            ETTY A. SAYLES                 By:          [SIGNATURE]
 ...................................            .................................


          JOAN M. ZEPZAUER                 Its:             CEO
 ...................................            .................................



                                            ASSIGNEE:

                                            SYMETRICS INDUSTRIES, INC.
 
            [SIGNATURE]                     By:        DUDLEY E. GARNER, JR.
 ....................................           .................................
                                               Dudley E. Garner, Jr.
 ....................................           Its President


                                  EXHIBIT 'B'

                                      -1-




<PAGE>