Document:

Exhibit 10.2

                           CONVERTIBLE PROMISSORY NOTE

Amount of Note: $83,726.30
As of: April 17, 2006

1. Names

Borrower:

      Techsphere Systems Int'l., Inc., a Georgia corporation ("TSI")
      750 Hammond Drive
      Building 10; Suite 100
      Atlanta, Georgia 30328

Guarantor: Cyber Defense Systems, Inc.("CYDF")

Lender: Frank Lively

2. Promise to Pay

For value received, by way of working capital advances, Borrower promises to pay
Lender $83,726.30 plus interest at the rate of 12% per annum accruing from date
of advance.

3. Method of Payments

Borrower will make total payment(s) consisting of principle of $83,726.30 plus
interest at the rate of 12% per annum. An option to convert some or all amounts
due into CYDF Class A common stock at $0.30 per share is available to the lender
at all times that there are amounts outstanding. Such shares will be restricted
shares and the respective certificate(s) will bear the required legend(s)
pursuant to Federal Securities laws. A form for such conversion(s) is attached
hereto.
<PAGE>

4. Date of Payments / Maturity Date

Borrower will make payment of the outstanding amounts on or before December 31,
2007 net of any amounts earlier converted and / or prepaid.

5. Application of Payments

Payments will be applied first to interest owed, if any, at the time of payment
and then to principal.

6. Prepayment

Borrower may pre-pay all or any part of the principal without penalty. Should
Borrower and or Guarantor close on any funding of at least $7,000,000.00 gross,
then the proceeds in excess of $7,000,000.00 will be used to make prepayments on
this Working Capital Note, the first Working Capital Note and to all Deferred
Salary Note holders on a pro-rata basis.

7. Security

This is an unsecured note. However, there is a Right of Conversion as described
in paragraph. 3.

8. Collection Costs

If Lender prevails in a lawsuit to collect on this note, Borrower will pay
Lender's costs and lawyer's fees in an amount the court finds to be reasonable.

9. Entire Agreement

This Promissory Note is the entire agreement between the parties. It replaces
and supersedes any and all oral agreements between the parties, as well as any
prior writings as they may apply to these specific accrued / deferred salary
notes.
<PAGE>

10. Successors and Assigns

This agreement binds and benefits the heirs, successors and assigns of the
parties.

11. Notices

All notices must be in writing. A notice may be delivered to a party at the
address that follows a party's signature or to a new address that a party
designates in writing. A notice may be delivered:

      o     in person
      o     by certified mail, or
      o     by overnight courier.

12. Governing Law

This agreement will be governed by and construed in accordance with the laws of
the state of Georgia.

13. Waiver

If one party waives any term or provision of this agreement at any time, that
waiver will be effective only for the specific instance and specific purpose for
which the waiver was given. If either party fails to exercise or delays
exercising any of its rights or remedies under this agreement, that party
retains the right to enforce that term or provision at a later time.

14. Severability

If any court determines that any provision of this agreement is invalid or
unenforceable, any invalidity or unenforceability will affect only that
provision and will not make any other provision of this agreement invalid or
unenforceable and such provision shall be modified, amended or limited only to
the extent necessary to render it valid and enforceable.
<PAGE>

15. Disputes

If a dispute arises, the parties will try in good faith to settle it through
mediation conducted by a mediator to be mutually selected. The parties will
share the costs of the mediator equally. Each party will cooperate fully and
fairly with the mediator and will attempt to reach a mutually satisfactory
compromise to the dispute. If the dispute is not resolved within 30 days after
it is referred to the mediator, it will be arbitrated by an arbitrator to be
mutually selected. Judgment on the arbitration award may be entered in any court
that has jurisdiction over the matter. Costs of arbitration, including lawyers'
fees, will be allocated by the arbitrator.

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BORROWER                                        LENDER

Techsphere Systems Int'l., Inc.,                FRANK LIVELY
a Georgia corporation
750 Hammond Drive
Building 10; Suite 100
Atlanta, Georgia 30328

Dated: 04/24/2006                               Dated: 04/24/2006
       -------------------------                       -------------------------

By:    /s/ David M. Barnes                      By:    /s/ Frank Lively
       -------------------------                       -------------------------
       David M. Barnes                                 Frank Lively
       Chief Financial Officer
       Techsphere Systems Int'l., Inc.
       Cyber Defense Systems, Inc.Exhibit 10.3

                           CONVERTIBLE PROMISSORY NOTE

Amount of Note: $312,254.62
As of: April 17, 2006

1. Names

Borrower:

Cyber Defense Systems, Inc. ("CYDF")

Lender: Cherokee Raiders, LP

2. Promise to Pay

For value received, by way of working capital advances, Borrower promises to pay
Lender $312,254.62 plus interest at the rate of 12% per annum from date of
advance.

3. Method of Payments

Borrower will make total payment(s) consisting of principle of $312,254.62 plus
interest at the rate of 12% per annum accruing from date of advance. An option
to convert some or all amounts due into CYDF Class A common stock at $0.30 per
share is available to the lender at all times that there are amounts
outstanding. Such shares will be restricted shares and the respective
certificate(s) will bear the required legend(s) pursuant to Federal Securities
laws. A form for such conversion(s) is attached hereto.

4. Date of Payments / Maturity Date

Borrower will make payment of the outstanding amounts on or before July 31, 2008
net of any amounts earlier converted and / or prepaid.
<PAGE>

5. Application of Payments

Payments will be applied first to interest owed, if any, at the time of payment
and then to principal.

6. Prepayment

Borrower may pre-pay all or any part of the principal without penalty. Should
Borrower and or Guarantor close on any funding of at least $7,000,000.00 gross,
then the proceeds in excess of $7,000,000.00 will be used to make prepayments on
this Working Capital Note, the Proxity Working Capital Note, the Frank Lively
Working Capital Notes and to all Deferred Salary Note holders on a pro-rata
basis.

7. Security

This is an unsecured note. However, there is a Right of Conversion as described
in paragraph. 3.

8. Collection Costs

If Lender prevails in a lawsuit to collect on this note, Borrower will pay
Lender's costs and lawyer's fees in an amount the court finds to be reasonable.

9. Entire Agreement

This Promissory Note is the entire agreement between the parties. It replaces
and supersedes any and all oral agreements between the parties, as well as any
prior writings as they may apply to these specific accrued / deferred salary
notes.

10. Successors and Assigns

This agreement binds and benefits the heirs, successors and assigns of the
parties.
<PAGE>

11. Notices

All notices must be in writing. A notice may be delivered to a party at the
address that follows a party's signature or to a new address that a party
designates in writing. A notice may be delivered:

      o     in person
      o     by certified mail, or
      o     by overnight courier.

12. Governing Law

This agreement will be governed by and construed in accordance with the laws of
the state of Georgia.

13. Waiver

If one party waives any term or provision of this agreement at any time, that
waiver will be effective only for the specific instance and specific purpose for
which the waiver was given. If either party fails to exercise or delays
exercising any of its rights or remedies under this agreement, that party
retains the right to enforce that term or provision at a later time.

14. Severability

If any court determines that any provision of this agreement is invalid or
unenforceable, any invalidity or unenforceability will affect only that
provision and will not make any other provision of this agreement invalid or
unenforceable and such provision shall be modified, amended or limited only to
the extent necessary to render it valid and enforceable.
<PAGE>

15. Disputes

If a dispute arises, the parties will try in good faith to settle it through
mediation conducted by a mediator to be mutually selected. The parties will
share the costs of the mediator equally. Each party will cooperate fully and
fairly with the mediator and will attempt to reach a mutually satisfactory
compromise to the dispute. If the dispute is not resolved within 30 days after
it is referred to the mediator, it will be arbitrated by an arbitrator to be
mutually selected. Judgment on the arbitration award may be entered in any court
that has jurisdiction over the matter. Costs of arbitration, including lawyers'
fees, will be allocated by the arbitrator.

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BORROWER

Cyber Defense Systems, Inc.

Dated: 04/24/2006
       -------------------------------------------------------------------------

By:    /s/ David M. Barnes
       -------------------------------------------------------------------------
       David M. Barnes
       Chief Financial Officer
       Cyber Defense Systems, Inc.

Cherokee Raiders

By:    /s/ William C. Robinson
       -------------------------------------------------------------------------
       William C. Robinson, General Partner

Date:  04/24/2006
       -------------------------------------------------------------------------EXHIBIT 10.150

                              Employment Agreement

Agreement made this 6th day of March, 2002, between HiEnergy Microdevices, Inc.,
a Delaware Corporation (the "Company"); and Bogdan C. Maglich, an individual
("Maglich").
                                   WITNESSETH

IN CONSIDERATION of the mutual covenants contained herein, the parties agree as
follows:

      1.    EMPLOYMENT. The Company hereby agrees to employ Maglich, during the
            term specified in Paragraph 2, and Maglich agrees to accept such
            employment, all subject to the terms and conditions hereinafter set
            forth in this Agreement.

      2.    TERM. Subject to the terms and conditions of this Agreement,
            Maglich's employment by the Company shall be for a term commencing
            on the date hereof and ending on December 31, 2006, unless sooner
            terminated as hereinafter provided.

      3.    DUTIES AND RESPONSIBILITIES.

            (a)   During the term, Maglich shall serve as Chief Scientific
                  Officer and Chairman of the Company and shall devote the
                  stated time and attention to the business of the Company. The
                  business of the Company, for purposes of this Agreement, shall
                  include (i) the detection of the substances of which objects
                  are comprised and the development, production, sale and
                  promotion of devices and technologies to effect such
                  detection, and (ii) such other endeavors as to which Maglich
                  and the Board shall mutually agree.
            (b)   Subject to the supervision of the Board of Directors, Maglich,
                  as Chief Scientific Officer of the Company, will be
                  responsible for the determination of the Company's research
                  and development program; its research and development
                  associations and consortiums; its patent policy; the
                  selection, hiring, and/or firing of its scientific,
                  engineering and technical personnel and of any Principal
                  Investigator or Co-principal Investigator on research and
                  development contracts of the Company and of their clerical
                  assistants, as well as their respective remuneration and
                  budgeting priorities.
            (c)   Subject to such requirements as shall be imposed by law or
                  governmental regulation, Maglich, as Chief Scientific Officer,
                  shall be responsible for determining what technical
                  information may be publicly disclosed by any officer or
                  employee of the Company.
            (d)   As Chairman, Maglich agrees to perform, and shall perform, the
                  functions of the Chairman as set forth in the By-Laws of the
                  Company; shall be one of two signatories on all checks and
                  drafts of the Company in excess of $1000; and, subject to
                  review by the Board of Directors, shall be the officer of the
                  Company responsible for submitting budgetary recommendations
                  to the Board.
<PAGE>

            (e)   It is recognized by the Company that Maglich has heretofore
                  been engaged, and in the future may be engaged, in other
                  endeavors, including, without limitation, those relating to
                  nuclear fusion energy, satellite-borne nuclear power, and
                  anti-missile defense, as well as scientific education,
                  including, without limitation, scientific publications and
                  documentary films. It is recognized by the Company that such
                  activities are indirectly beneficial to its reputation,
                  standing and governmental and business relations. It is
                  further recognized that, provided the company does not furnish
                  its personnel, equipment, facilities or funding for such other
                  endeavors and that the work conducted on such other endeavors
                  does not interfere with the services and time on the job
                  provided to the Company by Maglich, any patents or other
                  intellectual property or other benefits derived from such
                  other endeavors are the sole property of Maglich and that the
                  Company shall neither have or claim any interest therein. A
                  list of Maglich's other endeavors, as discussed above, shall
                  be maintained mutually by the Company and Maglich. All other
                  work conducted by Maglich during his employed time, or using
                  the Company's personnel, facilities or funding, and which is
                  not so listed, will be work for hire to the Company by
                  Maglich.
            (f)   Maglich shall devote not less than 35 hours per week to the
                  business of the Company, it being understood that he may give
                  such time and attention to other endeavors as does not
                  materially detract from his services for, and attention to,
                  the business of the Company.
            (g)   It is contemplated that, for the continuance of this
                  Agreement, Maglich will be employed as Chief Scientific
                  Officer and Chairman of the Company. In the event Maglich is
                  not so elected and not so continued in any or all of such
                  posts, for any reason other than termination for cause (as
                  defined below), such failure shall constitute a breach of this
                  Agreement by the Company and Maglich shall have the right to
                  terminate his employment hereunder forthwith by written notice
                  of such intention to the Company and the Company will be
                  obligated to make the severance payments set forth in
                  Paragraph 11 of this Agreement and to satisfy all other
                  obligations set forth in Paragraph 10.

      4.    COMPENSATION. In consideration of the services to be rendered by
            Maglich hereunder, the Company agrees to pay Maglich, and he agrees
            to accept, the following:

            (a)   Base Salary. For the period commencing January 1, 2002, and
                  ending December 31, 2002, the Company shall pay Maglich at the
                  annual rate of $125,000 annually, payable in cash monthly. For
                  the period January 1, 2003, through December 31, 2006, the
                  Company shall pay Maglich as follows:
<PAGE>

                  (i)   For the period January 1, 2003, through December 31,
                        2003, $137,500 annually, payable in cash monthly;
                  (ii)  For the period January 1, 2004, through December 31,
                        2004, $151,250 annually, payable in cash monthly;
                  (iii) For the period January 1, 2005, through December 31,
                        2005, $166, 375 annually, payable in cash monthly; and
                  (iv)  For the period January 1, 2006, through December 31,
                        2006, $183,012 annually, payable in cash monthly.
                  (v)   In the event that Maglich, with the approval of the
                        Company, shall work less than the time required of him
                        under Paragraph 3(c), his base salary shall decrease
                        proportionally.

                  (b)    Signing Bonus.
                         In consideration of Maglich executing and delivering
                         this Agreement, the Company has agreed to pay Maglich a
                         signing bonus by issuing to him its promissory note in
                         the face amount of $100,000 in the form of Exhibit A
                         hereto, payable (i) $50,000 upon receipt by the Company
                         of One Million Dollars or more from any source, and
                         (ii) $50,000 upon receipt by the Company of in excess
                         of $500,000 from its sales or operations (including
                         grants not directed for equipment) or receipt by the
                         Company of a further cash infusion of One Million
                         Dollars or more.

                  (c)    Annual Bonus.
                         (i)At the beginning of each fiscal year, the Board of
                         Directors of the Company shall establish a bonus plan
                         based upon Company performance goals. At the end of the
                         fiscal year, officers of the Company, including
                         Maglich, shall receive a bonus based upon performance
                         against the established plan.
                         (ii) In no event shall Maglich's bonus be less than 20%
                         of the total amount of bonuses paid to officers of the
                         Company pursuant to the bonus plan referred to in "(i)"
                         above.
                         (iii) In the event the Company's gross pretax profit in
                         any fiscal year shall exceed $.20 per share, then
                         Maglich's bonus in that year shall not be less than
                         $50,000.

                  (d)    Stock Options.
                         (i) The Company represents, warrants, and confirms to
                         Maglich its agreement in 1998 to then issue to him
                         options entitling him to purchase 111,040 shares of the
                         Common Stock of the Company at an exercise price of $3
                         per share, such options to be exercisable at any time
                         and from time to time within the period ending November
                         30, 2008. The Company represents

<PAGE>

                         and warrants that it will take all corporate action
                         necessary or desirable to effect the valid issuance of
                         all such options to Maglich and the delivery of
                         certificates therefor to Maglich no later than March
                         30, 2002; and (ii) The Company shall grant and issue to
                         Maglich annually during the term hereof five-year stock
                         options at a rate of not less than one (1%) per annum
                         of the Company's stock issued and outstanding at the
                         end of the year, such options to have an exercise price
                         of the most recent arms length sale, or if publicly
                         traded, the average price for the preceding thirty
                         days. In no event shall Maglich receive, in the
                         aggregate, in any one year less than 10% of the total
                         number of options granted by the Company for services
                         in that year.

      5.    PENSION AND FRINGE BENEFITS.

            (a)   Maglich shall be entitled to participate in any employee
                  benefit plans generally available to senior officers and/or
                  key employees of the Company, including medical, disability,
                  pension, non-qualified deferred compensation plans, the
                  programs for the allowance for or the reimbursement of
                  automobile expenses, and any other plans of general
                  application to senior officers and/or key employees of the
                  Company on the date hereof and such plans and programs adopted
                  hereafter for the benefit of senior officers and/or key
                  employees of the Company.
            (b)   As Maglich is covered by Medicare, the Company shall pay his
                  supplemental Blue Cross, TIAA Long-Term Care insurance,
                  medical insurance for his children under eighteen (18) years
                  of age, and dental insurance for himself and his children, and
                  not less than $1000 per month into his TIAA annuity pension
                  fund until August 31, 2003.
            (c)   The Company will provide Maglich with a Lincoln, Cadillac, or
                  equivalent U.S. brand automobile of his choosing for his
                  business and personal use and will pay for all related
                  expenses thereof, including, without limitation, the costs of
                  registration, fuel, repairs, and insurance. (d) Maglich shall
                  be entitled to take time off for vacation or illness in
                  accordance with the Company's policy for senior executives
                  and/or key employees and to receive all other fringe benefits
                  as from time to time made generally available to senior
                  executives and/or key employees of the Company.
            (d)   The Company shall reimburse Maglich for reasonable and
                  necessary personal attorneys' fees, costs and expenses
                  incurred in connection with matters relating to the affairs of
                  the Company, excluding any disputes with the Company itself.
                  Such reimbursement shall not exceed $20,000 in any one year,
                  except as may be necessary to protect the Company from actual
                  or claimed liability to others or as shall be otherwise agreed
                  by the Company or provided for in Paragraph 12 hereof. Nothing
                  contained herein shall limit the Board of Directors from
                  providing defense costs to all officers and directors of the
                  Company, including Maglich.

<PAGE>

      6.    REIMBURSEMENT. The Company shall reimburse Maglich for all proper
            expenses, including, without limitation, travel and entertainment
            expenses, incurred by him in the performance of his duties hereunder
            in accordance with the Company's policies and procedures in effect
            from time to time.

      7.    OFFICE AND LOCATION. The Company shall provide Maglich, at the
            Company's sole expense, with an executive office at its headquarters
            commensurate with his positions as Chief Scientific Officer and
            Chairman within the facility then occupied by the Company.

      8.    EXECUTIVE SECRETARY. The Company shall provide Maglich, at the
            Company's sole expense, with the services on a full-time basis of an
            executive secretary of his choosing. Said executive secretary shall
            perform those services for Maglich that are regularly performed for
            the Chairman of the Board of a public company and shall also assist
            Maglich in his positions as Chief Scientific Officer of the Company.
            A salary customary in the area in which the Company's offices are
            located shall be paid by the Company to Dr. Maglich's executive
            secretary.

      9.    INSURANCE . The Company shall, at its sole expense, provide Maglich
            with the following insurance:

            (a)   Life Insurance. The Company shall provide Maglich with, and
                  pay up to $1,000 in premium per month for two key man life
                  insurance policies. The owner and beneficiary of one policy
                  shall be the Company. The owner of the other ("Maglich
                  Policy") shall be Maglich and/or the beneficiary or
                  beneficiaries designated by him. Every time the Company
                  increases its insurance on Maglich's life the Maglich Policy
                  shall increase at the Company's expense by an identical
                  amount.

            (b)   Disability Insurance. The Company shall pay the premium on the
                  disability insurance policy presently maintained by Maglich
                  and any renewals thereof provided the premium shall not exceed
                  $500 per month.

      10.   TERMINATION.

            (a)   Termination for Cause. The Company may terminate Maglich's
                  employment at any time upon Maglich's gross negligence or
                  willful malfeasance in the material performance of his duties
                  and responsibilities to the Company under Paragraph 3 of this
                  Agreement. Such discharge shall be effected by notice (the

<PAGE>

                  "Discharge Notice") to Maglich which shall specify the reasons
                  for Maglich's discharge and effective date thereof. In each
                  instance, such termination shall not be effective if the gross
                  negligence or willful malfeasance specified in the Discharge
                  Notice is cured by Maglich within ten (10) days following the
                  date of receipt by Maglich of the Discharge Notice.

            (b)   Termination for Disability. In the event of disability of
                  Maglich rendering him unable to perform his services hereunder
                  for a period of one hundred eighty (180) consecutive days, the
                  Company shall have the right to terminate this Agreement upon
                  giving not less than thirty (30) days' notice ("Termination
                  Notice") of its intention to do so. If Maglich shall have
                  resumed his duties hereunder within such a thirty (30) day
                  period and shall have continuously performed his services for
                  at least thirty (30) consecutive days thereafter, the
                  Termination Notice shall be deemed of no force and effect and
                  this Agreement shall thereupon continue in full force as
                  though such notice of termination had not been given.

                    (c)  Termination by Maglich. Maglich may terminate this
                         Agreement at any time by giving not less than three (3)
                         months' notice of his intention to terminate, in which
                         case all Company benefits shall be terminated "in due
                         course" as of the effective date of termination. Any
                         notes and earned stock options of Maglich shall
                         immediately vest and be paid as agreed.

      11.   SEVERANCE PAYMENTS. If this agreement is terminated by the Company
            [without cause], the Company shall pay Maglich, on the termination
            date, an amount of money equal to the aggregate unpaid balance of
            the minimum annual base salaries provided for in Paragraph 4(a)
            hereof through a period of two (2) years after the termination date.
            Additionally, the Company shall continue to pay Maglich, for said
            one year period, all of the benefits provided for in Paragraph 5(a)
            and (b) above and, thereafter, all premiums associated with the
            continuation of Maglich's insurance under COBRA for the period that
            COBRA shall be available to Maglich. Upon termination [without
            cause], all of Maglich's options respecting shares of the capital
            stock of the Company shall forthwith vest in Maglich and become
            immediately exercisable.

      12.   COMPROMISE OF UNPAID CONTRACTUAL OBLIGATIONS TO MAGLICH. Maglich and
            the Company have certain differences in their understanding of the
            existence and magnitude of the Company's obligations to Maglich
            under an Employment Agreement initially entered into between Maglich
            and Advanced Physics Corporation on the 31st day of December 1993
            and understood by Maglich to have been adopted and approved by the
            Company on August 23, 1995. If Maglich is correct, the Company's
            current obligations to Maglich under the aforesaid Employment
            Agreement would exceed $4,000,000. Maglich and the Company have
            agreed that Maglich will cancel all obligations or alleged
            obligations of the Company to Maglich respecting the aforesaid
            Employment Agreement in exchange for indemnification of Maglich by
            the Company against any personal tax liabilities arising from the

<PAGE>

            issuance to Maglich of securities of the Company, up to a total
            possible indemnification payment of Seventy-five Thousand dollars
            ($75,000). Accordingly, upon the release by Maglich of the Company
            from his claims under the aforesaid Employment Agreement, the
            Company agrees to indemnify and hold harmless Maglich from and
            against any and all personal tax liability or liabilities or alleged
            tax liability or liabilities of any kind or description, and against
            all attorney's fees, costs and expenses of counsel of Maglich's
            selection with respect to such tax liabilities or alleged tax
            liabilities, to the fullest extent permitted by law and subject to
            the payment of no more than $75,000. It is understood by the Company
            that it is a material condition of Dr. Maglich's entering into this
            Employment Agreement with the Company that he have no tax liability
            whatsoever respecting the issuance by the Company of securities to
            him, and it is the intention of the Company that to the limit of
            $75,000, it bear any and all such liability in full. The parties
            will execute and deliver such other and further documents as shall
            be necessary or advisable to carry out the transactions contemplated
            by this Paragraph 12. If the ultimate determination of tax liability
            by Maglich is in excess of $75,000, the Company will advance to
            Maglich an additional amount equal to the excess, up to an
            additional $75,000, as an advance against salary, without the
            collection of interest thereon.

      13.   EXCHANGE BY MAGLICH OF SHARES OF CLASS B COMMON STOCK FOR SHARES OF
            CLASS A COMMON STOCK OF THE COMPANY. Maglich is the owner of record
            of 100% of the authorized and issued Class B shares of the Company.
            The Company has determined that it is in the best interests of the
            Company and its shareholders for it to exchange Class A shares of
            the Company for all of Maglich's Class B shares. Maglich agrees that
            he will accept 100,000 shares of the Class A common stock of the
            Company in exchange for all of his Class B shares, and the Company
            agrees that such an exchange is fair and reasonable and agrees to
            such exchange. The Company represents and warrants to Maglich that
            its Board of Directors has or will take all necessary or appropriate
            action to vest in Maglich full and unfettered title to such 100,000
            shares of Class A Common Stock, free and clear of any liens or
            encumbrances of any kind whatsoever, upon Maglich's delivery to the
            Company of his Class B Common Stock in exchange for said 100,000
            shares of Class A Common Stock.

      14.   REPRESENTATIONS AND WARRANTIES OF THE COMPANY RESPECTING CERTAIN
            SECURITIES ISSUED TO MAGLICH AND ASSOCIATES AND RATIFICATION OF
            TRANSACTIONS RELATED THERETO.

            (a)   The Company hereby represents and warrants to Maglich that the
                  securities set forth below have been duly and validly issued
                  by the Company and registered by the Company in the names of
                  the persons listed below and are outstanding, fully paid and
                  non-assessable securities of the Company:

                  (i)   Advanced Projects Group, Inc. 58,000 share of Class A
                        (majority owned by Bogdan Maglich Common Stock and
                        Maglich Family Holdings, Inc.)

<PAGE>

                  (ii)  Bogdan C. Maglich       76,000 shares of Class A Common
                                                Stock and all shares of Class B
                                                Common Stock (converted by
                                                Maglich into 100,000 shares of
                                                Class A Common Stock pursuant to
                                                Paragraph 13 hereof)

                  (iii) Maglich Family
                         Holdings, Inc.         166,049 shares of Class A
                                                Common Stock

            (b)   The Company hereby ratifies and reaffirms all transactions
                  which resulted in the issuance of the securities listed in
                  "(a)" above and represents and warrants that its Board of
                  Directors has or will take all action necessary or appropriate
                  to vest in the parties listed above full and unfettered title
                  to all of said shares as stated above.

      15.   NON-DISCLOSURE AND COVENANT NOT TO COMPETEE

            (a)   Non-Disclosure. During the term of this Agreement and from and
                  after the termination of this Agreement, Maglich shall not,
                  except as required by law or to perform his duties under this
                  Agreement, divulge, disclose or communicate to any person,
                  firm, or corporation, any confidential information. The term
                  "confidential information" includes, without limitation,
                  information about the business of the Company (or any
                  division, subsidiary or affiliate of the Company) including,
                  but not limited to, methods of operation, pricing information
                  and customer lists, but excluding such information that was in
                  the public domain at the time it was acquired by Maglich or
                  that comes into the public domain other than through
                  disclosure by Maglich. If confidential information is
                  contained in any document or writing or is fixed in any other
                  tangible form, magnetically, electronically, or otherwise, and
                  if such confidential information is in Maglich's possession or
                  under his control, he shall return such information and all
                  copies thereof to the Company upon his termination. Maglich
                  shall not directly or indirectly, take, copy, or transfer, in
                  any manner whatsoever, any of the business records of the
                  Company (or any division, subsidiary or affiliate of the
                  Company).

            (b)   Non-Compete. During the term of Maglich's employment
                  hereunder, and for a period of five (5) years following the
                  date of termination of Maglich's employment hereunder, Maglich
                  shall not, directly or indirectly, engage (whether for
                  compensation or without compensation) as an individual
                  proprietor, partner, stockholder, officer, employee, director,
                  consultant, joint venturer, lender, or in any other capacity
                  whatsoever (otherwise than as a holder of no more than 1% of
                  the total outstanding stock of a publicly held company) in any
                  business activity or business activities that compete with the
                  remote-non-intrusive detection business of the Company, it
                  being understood and agreed by the Company that "other
                  endeavors" of Maglich referred to and listed in Paragraph

<PAGE>

                  3(a) and 3(b) hereof are not and never shall be considered as
                  competing activities to those of the Company. During the term
                  of Maglich's employment hereunder, and for a period of the
                  greater of one year or any time during which Maglich is
                  receiving severance payments pursuant to Paragraph 11 hereof,
                  Maglich shall not, directly, or indirectly: either for himself
                  or for any other person, firm or corporation, divert or take
                  away or attempt to divert or take away any person, firm or
                  corporation who was or is a customer of the Company during the
                  term of this Agreement, or (b) induce or influence any person
                  who is engaged by the Company as an employee, agent or
                  otherwise, to terminate his or her engagement or to engage or
                  otherwise participate in a business activity directly or
                  indirectly competitive with the Company. (c) Scope of
                  Restrictions. The restrictions set forth in this Paragraph 15
                  are considered by the parties to be reasonable. However, if
                  any such restriction is found 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 what may be
                  enforceable. (d) Remedies. In the event of a breach or a
                  threatened breach of this Paragraph 15 that is not cured by
                  Maglich after receipt of ten day's written notice from the
                  Company, the Company shall be entitled to an injunction
                  restraining Maglich from committing or continuing such breach,
                  as well as to any and all other legal and equitable remedies
                  permitted by law.

      16.   MISCELLANEOUS.

            (a)   Enforceability. The failure of any party at any time to
                  require performance by another party of any provision
                  hereunder shall in no way affect the right of that party
                  thereafter to enforce the same, nor shall it affect any other
                  party's right to enforce the same, or to enforce any of the
                  other provisions of this Agreement; nor shall the waiver by
                  any party of the breach of any provision hereof be taken or
                  held to be a waiver of any subsequent breach of such provision
                  or as a waiver of the provision itself.

            (b)   Binding Effect. This Agreement shall be binding upon the
                  Company, its successors and assigns and Maglich, his heirs,
                  and personal representatives. This Agreement may not be
                  assigned by either party without the prior written consent of
                  the other party being first obtained.

            (c)   Modifications. This Agreement may not be orally cancelled,
                  changed, modified or amended, and no cancellation, change,
                  codification or amendment shall be effective or binding,
                  unless in writing and signed by the parties to this Agreement.

            (d)   Severability; Survival. In the event any provision or portion
                  of this Agreement is determined to be invalid or unenforceable
                  for any reason, in whole or in part, the remaining provisions
                  of this Agreement shall nevertheless be binding upon the
                  parties

<PAGE>

                  with the same effect as through the invalid or unenforceable
                  part had been severed and deleted. The respective rights and
                  obligations of the parties thereunder shall survive the
                  termination of the executive's employment to the extent
                  provided elsewhere herein and to the extent necessary to the
                  intended preservation of such rights and obligations.

            (e)   Notices. Any notice, request, instruction or other document to
                  be given hereunder by any party to another party shall be in
                  writing and shall be deemed effective (i) upon personal
                  delivery, if delivered by hand against receipt, (ii) mailed
                  postage prepaid, by United States certified or registered
                  mail, return receipt requested, (iii) upon being sent by
                  facsimile transmission (if receipt is electronically
                  confirmed) and, in each case, addressed as follows:

                              If to the Company:

                              HiEnergy Microdevices, Inc.
                              10 Mauchly Drive
                              Irvine, CA 92618

                              With a copy to:

                              Blackwell Sanders Pepper Martin
                              2300 Main Street, Suite 1000
                              Kansas City, MO 62108
                              Attention: Steve Carman, Esq.

                              If to Maglich:

                              Bogdan C. Maglich
                              559 Vista Flora
                              Newport Beach, CA 92660

                              With a copy to:
                              James Monroe Marx, Esq.
                              590 Madison Avenue, 23rd  Floor
                              New York, New York 10022

Any party may change the address to which notices are to be sent by giving
notice of such change of address to the other party in the manner herein
provided for giving notice.

            (f)   Applicable Law. This Agreement shall be governed by, and
                  construed in accordance with, the laws of the State of
                  California, without application of conflict of law provisions
                  applicable herein.

            (g)   Entire Agreement. This Agreement represents the entire
                  agreement between the Company and Maglich with respect to the
                  subject matter hereof, and all prior agreements, plans and
                  arrangements

<PAGE>

                  relating to the employment of Maglich by the Company are
                  nullified and superceded hereby.

            (h)   Headings. The headings contained in this Agreement are for
                  reference purposes only, and shall not affect the meaning or
                  interpretation of this Agreement

            (i)   Counterparts. This Agreement may be executed in one or more
                  counterparts, all of which shall constitute one and the same
                  agreement, and each of which shall be deemed an original.

      IN WITNESS WHEREOF, the parties have executed this Agreement as of the day
and year first above written.

                             HiEnergy Microdevices, Inc., a Delaware Corporation

                             By: /s/ Gregory Gilbert
                                 ------------------------------------
                                 Gregory Gilbert
                                 President and Duly Authorized Signatory

                                /s/ B. C. Maglich
                                ------------------------------------
                                Bogdan C. Maglich, Individually

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