Document:

Ex. 10.64

                            DEPOSIT PLEDGE AGREEMENT
                            ------------------------

     THIS AGREEMENT is made as of October 11, 2001 by and between Stephen Bunker
("PLEDGOR")  and Citizens Bank of Massachusetts (the "LENDER"), 28 State Street,
Boston,  Massachusetts  02109.

     In order to induce the Lender to extend credit pursuant to Implant Sciences
Corporation,  and  for  other  good  and valuable consideration, the receipt and
sufficiency  of  which  are  hereby  acknowledged, Pledgor hereby assigns to the
Lender  and  grants  to the Lender a security interest in, and exclusive control
over  the  Collateral  as  described below.  The Collateral is pledged to secure
performance of all obligations of the Pledgor to the Lender, direct or indirect,
absolute  or  contingent,  now  existing  or hereafter arising of every kind and
description  arising out of the Limited Guaranty executed by Pledgor in favor of
Lender  (the  "AGREEMENT")  dated  October  11,  2001  (the  "OBLIGATIONS").

COLLATERAL:
----------

     The  Collateral  is  Account  No.  maintained  at  Lender.

     The  Collateral shall remain in the control or possession of the Lender and
shall  constitute  continuing  collateral  security  for  the  full  payment and
performance  of  the  Obligations.  Pledgor  agrees  that  so long as any of the
Obligations remains outstanding no action of any kind whatsoever may be taken by
Pledgor  or  any  other  person  or  entity  with  respect to any portion of the
Collateral  without  the  Lender's  written  consent.  The  Lender  is  hereby
authorized  and  appointed  as  agent  and  attorney-in-fact  of  Pledgor, which
appointment  is coupled with an interest and shall be irrevocable so long as any
of  the  Obligations  remain  outstanding,  to  sign and deliver such documents,
endorsements  and  instruments and to take all such other actions in the name of
Pledgor as the Lender may deem necessary or advisable to perfect or preserve its
security  interest  in,  and  lien  on,  the  collateral.

WAIVERS  BY  GUARANTOR:
----------------------

     Pledgor waives:  notice of acceptance hereof, notice of any action taken or
omitted  by the Lender in reliance hereon, notice of default with respect to any
of  the  Obligations  and,  to the fullest extent it may effectively do so under
applicable  law,  all  defenses  which  might  at  any  time be available to it.

<PAGE>
PLEDGE  UNCONDITIONAL:
---------------------

     This  Agreement  is  the  direct,  unconditional,  absolute  and  primary
obligation  of  Pledgor,  and no invalidity, irregularity or unenforceability of
all  or  any  part  of the Obligations or of any security therefor shall affect,
impair or be a defense to this Agreement.  This Agreement and the collateral are
given  to  secure  payment,  and  not  merely  collection  of  the  Obligations.

DEFAULTS  AND  REMEDIES:
-----------------------

     Each of the following shall constitute a default hereunder:  any failure by
the  Pledgor to pay, perform or observe any obligations on its part hereunder or
under  the  aforementioned  loan  to  Pledgor  as  the  case  may  be beyond any
applicable  grace period; the service upon the Lender or such facility or branch
as  trustee,  or  of  any  similar writ or process of attachment relating to any
deposit  or  property of Pledgor.  Upon the occurrence of any default hereunder,
the  Lender  may  apply  any  Collateral  to  the  satisfaction of any or all of
Pledgor's  and/or  Pledgor's  Obligations  and  pursue  any additional rights or
remedies  available to it under this Agreement, any agreement between the Lender
and  Pledgor  or  applicable  law.

REPRESENTATIONS  AND  WARRANTIES:
--------------------------------

     Pledgor  represents and warrants to the Lender that except for the security
interest granted to the Lender hereunder the Collateral is and shall remain free
from  any adverse lien, security interest or encumbrances in favor of others; it
is  duly  organized, validly existing and in good standing under the laws of the
Commonwealth  of Massachusetts; it has full power to enter into and perform this
Agreement and has taken all necessary corporate or other action to authorize the
execution,  delivery  and  performance  of  this  Agreement;  this  Agreement
constitutes  the legal, valid and binding obligations of Pledgor, enforceable in
accordance  with  its  terms, subject to bankruptcy, insolvency or other similar
laws  affecting  the  rights of creditors generally; the execution, delivery and
performance  of  this  Agreement will not violate any provisions of any existing
law,  treaty  or  regulation  applicable  to  Pledgor  or  of  its  Articles  of
Organization  and  By-Laws,  or  other  governing  documents, or of any order or
decree  of  any  court,  arbitrator or governmental agency or of any contractual
undertaking  to  which  it  is a party or by which it may be bound; no consents,
licenses,  approvals  or  authorizations  of,  exemptions by or registrations or
declarations  with, any governmental authority are required with respect to this
Agreement.

COSTS:
-----

     Pledgor  agrees  to  reimburse  the  Lender  for any out-of-pocket costs or
expenses  (including  without  limitation  reasonable  fees and disbursements of
counsel)  incurred  by  the  Lender  in  connection  with  the  preservation  or
enforcement  of  its  rights  or  remedies under this Agreement or any agreement
between  Pledgor  and  the  Lender.

                                        2
<PAGE>
INTERPRETATION,  ETC.:
---------------------

     This  Agreement is a continuing one and all liabilities to which it applies
or  may apply under the terms hereof shall be conclusively presumed to have been
created  in  reliance  hereon.  No delay on the part of the Lender in exercising
any  of  its  options,  powers or rights, or partial or single exercise thereof,
shall  constitute  a  waiver  thereof.  Except  as expressly provided herein, no
waiver of any of rights and no modification or amendment of this Agreement shall
be  deemed  to  be  made by the Lender unless the same shall be in writing, duly
signed  on behalf of the Lender; each such waiver (if any) shall apply only with
respect  to the specific instance involved and shall in no way impair the rights
of  the  Lender or the obligations of Pledgor to the Lender in any other respect
or  at  any  other  time.  The  Collateral,  this  Agreement  and the rights and
obligations  of  the  Lender  and  of Pledgor hereunder shall be governed by and
construed  in  accordance  with  the  laws of the Commonwealth of Massachusetts.
This  Agreement  is  binding  upon Pledgor, its successors and assigns and shall
inure  to  the  benefit  of the Lender and its respective successors or assigns.
The  headings contained herein are for convenience only and shall not affect the
construction  hereof.

SUBMISSION  TO  JURISDICTION:
----------------------------

     Pledgor  irrevocably submits to the non-exclusive jurisdiction of any state
or  federal  court  sitting  in  Boston,  Massachusetts over any suit, action or
proceeding  arising  out  of  or  relating  to this Agreement or the Collateral.
Pledgor irrevocably waives, to the fullest extent it may effectively do so under
applicable  law,  its  right  to a trial by jury, and any objection which it may
have  or  hereafter  have to the laying of the venue of any such suit, action or
proceeding brought in any such court and any claim that any such suit, action or
proceeding  brought in any such court has been brought in an inconvenient forum.
Pledgor  agrees, to the fullest extent it may effectively do so under applicable
law, that a final judgment in any such suit, action or proceeding brought in any
court  shall  be  conclusive and binding upon Pledgor and may be enforced in the
courts of the United States of America and the Commonwealth of Massachusetts (or
any other courts to the jurisdiction of which Pledgor is or may be subject) by a
suit upon such judgment, provided that service of process is effected on Pledgor
as  permitted  by  law.

     IN  WITNESS  WHEREOF, Pledgor has caused this Agreement to be duly executed
under  seal  and  delivered  as  of  the  date  first  above  written.

WITNESS:

/s/  David  C.  Volpe                       /s/  Stephen  Bunker
--------------------------------            --------------------
                                            Stephen  Bunker,  individually

                                        3
<PAGE>
                          COMMONWEALTH OF MASSACHUSETTS

Suffolk,  ss.                                              Date:  10/11/01
                                                                  --------

     Then  personally  appeared  the above-named Stephen Bunker and acknowledged
the  foregoing  instrument  to  be  his  own  free  act  and  deed  before  me,

                                   /s/  Carolyn  Connors
                                   ---------------------
                                   Notary  Public
                                   My  commission  expires  2/4/05
                                                            ------

                                        4
<PAGE>Ex. 10.65

                                LIMITED GUARANTY
                                ----------------

LENDER:                  Citizens  Bank  of  Massachusetts
                         28  State  Street
                         Boston,  MA  02109

LOAN  NO.:

BORROWER:                Implant  Sciences  Corporation
                         107  Audubon  Road
                         Wakefield,  MA  01880

ORIGINAL  PRINCIPAL
AMOUNT:                  $750,000  Commercial  Promissory  Note
                         dated  January  18,  1998

GUARANTY  AMOUNT:        $200,000

DATE:                    October  11,  2001

     To  induce  Citizens Bank of Massachusetts (hereinafter "LENDER" which term
shall  include  its  successors  and  assigns)  to  modify  the  foregoing  Loan
Arrangement  with  the  above-named Borrower (hereinafter called the "BORROWER")
and  in  consideration  thereof  and  of  any  loans,  advances  or  financial
accommodations  heretofore  or hereafter granted by Lender to or for the account
of  Borrower  thereunder,  each  of  the  undersigned  Guarantors guarantees the
payment  to  Lender  of all sums which may be presently due and owing and of all
sums  which  shall  in  the  future become due and owing to Lender from Borrower
under  said  Loan Arrangement and under any extension or renewal thereof and due
performance  by  Borrower  of  all  its  obligations  thereunder.

     Notwithstanding  anything  to  the  contrary  contained herein, Guarantor's
obligations  hereunder shall not exceed Two Hundred Thousand ($200,000) Dollars.

     Each  Guarantor also agrees:  to indemnify and hold Lender harmless against
all  obligations,  demands  and liabilities, by whomsoever asserted, and against
all  losses in any way suffered, incurred or paid by Lender as a result of or in
any  way arising out of, or following, or consequential to transactions with the
Borrower  under  said Loan Arrangement; that this Guaranty shall not be impaired
by  any  modification,  supplement,  extension  or  amendment of any contract or
agreement  to  which  the  parties  thereto  may  hereafter  agree,  nor  by any
modification,  release  or  other  alteration  of  any of the obligations hereby
guaranteed  or  of  any security therefor, nor by any agreements or arrangements

<PAGE>
whatever  with  Borrower  or  anyone  else; that the liability of each Guarantor
hereunder  is  direct  and  unconditional  and may be enforced without requiring
Lender first to resort to any other right, remedy or security; that no Guarantor
shall  have any right of subrogation, reimbursement or indemnity whatsoever, nor
any  right  of recourse to security for the debts and obligations of Borrower to
Lender,  unless  and  until  all of said debts and obligations have been paid in
full;  that if there is more than one Guarantor, the liability of the Guarantors
hereunder shall be joint and several; that if Borrower or any Guarantor shall at
any  time  become  insolvent  or  make a general assignment, or if a petition in
bankruptcy  or  any  insolvency  or reorganization proceedings shall be filed or
commenced  by,  against  or in respect of Borrower or any Guarantor, any and all
obligations  of  each  Guarantor shall, at Lender's option, forthwith become due
and  payable  without  notice;  that the books and records of Lender showing the
account  between  Lender  and  Borrower  shall  be  admissible  in any action or
proceeding, shall be binding upon each Guarantor for the purpose of establishing
the items therein set forth and shall constitute prima facie proof thereof; that
this Guaranty is, as to each Guarantor, a continuing Guaranty which shall remain
effective  during  the  initial term and each renewal term of the foregoing Loan
Arrangement;  and  that  the  death  of  any  Guarantor  shall  not  affect  the
termination  of  this Guaranty as to such deceased or as to any other Guarantor;
that nothing shall discharge or satisfy the liability of any Guarantor hereunder
except  the  full  payment  and  performance  of  all  of  Borrowers  debts  and
obligations  to  Lender  with  interest including without limitation any ongoing
obligations  which  survive the payment or other termination of the primary debt
and  the  discharge or other disposition of any mortgage or security interest or
of  the  Collateral  thereunder;  that  any and all present and future debts and
obligations  of  Borrower  to  each Guarantor are hereby waived and postponed in
favor of and subordinated to the full payment and performance of all present and
future debts and obligations of Borrower to Lender; that all sums at any time to
the  credit  of  each Guarantor and any of the property of each Guarantor at any
time  in  Lender's  possession may be held by Lender as security for any and all
obligations of such Guarantor to Lender hereunder; and that each Guarantor shall
be  liable  to  Lender for all expenses which Lender may incur in enforcement of
Lender's  rights hereunder, including, without limitation, reasonable attorneys'
fees  and  expenses.

     Each  Guarantor  waives  notice  of  acceptance hereof; the right to a jury
trial  in  any  action hereunder; presentment and protest of any instrument, and
notice thereof; notice of default; and all other notices to which such Guarantor
might  otherwise  be  entitled.

     This  Guaranty,  all  acts  and  transactions hereunder, and the rights and
obligations  of  the parties hereto shall be governed, construed and interpreted
according  to  the  laws  of the Commonwealth of Massachusetts, shall be binding
upon  the  heirs,  executors,  administrators,  successors  and  assigns of each
Guarantor  and shall enure to the benefit of Lender, its successors and assigns.

WITNESS:                                      GUARANTOR:

/s/  David  C.  Volpe                         /s/  Stephen  Bunker
---------------------                         ----------------------------
                                              Stephen Bunker, individually

                                        2
<PAGE>
                          COMMONWEALTH OF MASSACHUSETTS

Suffolk,  ss.                                              Date:  10/11/01
                                                                  --------

     Then  personally  appeared  the above-named Stephen Bunker and acknowledged
the  foregoing  instrument  to  be  his  own  free  act  and  deed  before  me,

                              /s/  Carolyn  Connors
                              ---------------------
                              Notary  Public
                              My  commission  expires  2/4/05
                                                       ------

                                        3
<PAGE>

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