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                                                                  Exhibit 10.1.9


February 7, 2007


Alpha Security Group Corporation
328 West 77th Street
New York, New York 10024

Maxim Group LLC
405 Lexington Ave.
New York, New York 10174

     Re: Initial Public Offering

Gentlemen:

     The undersigned stockholder and director of Alpha Security Group
Corporation (the "COMPANY"), in consideration of Maxim Group LLC ("MAXIM")
entering into a letter of intent, dated May 6, 2005 (the "LETTER OF INTENT"), to
underwrite an initial public offering (the "IPO") of the securities of the
Company and embarking on, undertaking and continuing to participate in the IPO
process, hereby agrees as follows (certain capitalized terms used herein are
defined in paragraph 12 hereof):

     1. If the Company solicits approval of its stockholders of a Business
Combination, the undersigned will: (i) vote all Insider Shares owned by the
undersigned in accordance with the majority of the votes cast by the Public
Stockholders and (ii) vote any shares of Common Stock acquired in or following
the IPO or upon exercise of the Warrants acquired in the Private Placement in
favor of the Business Combination.

     2. (a) In the event that the Company fails to consummate a Business
Combination by a date (the "TERMINATION DATE") that is 18 months from the
effective date (the "EFFECTIVE DATE") of the registration statement relating to
the IPO, or 24 months from the Effective Date under the circumstances described
in the Prospectus, the undersigned shall, in accordance with all applicable
requirements of the Delaware General Corporation Law, take all action reasonably
within his power to dissolve and liquidate the Company and distribute all funds
held in the Trust Account to the Public Stockholders as soon as reasonably
practicable following the Termination Date in the manner and subject to the
deductions set forth in the Prospectus including, without limitation: (i)
causing the Company's board of directors to convene and adopt a plan of
dissolution and liquidation; (ii) voting, as a director (if applicable), in
favor of adopting such plan of dissolution and liquidation; (iii) within five
(5) business days of any such adoption by the Company's board of directors,
causing the Company to prepare and file a proxy statement with the Securities
and Exchange Commission (the "SEC") setting out, and calling for a vote by the
Company's stockholders in favor of, the plan of dissolution and liquidation; and
(iv) voting, as a stockholder, all of the undersigned's voting securities of the
Company in favor of any such plan of dissolution and liquidation. In addition,
from and after the Termination Date, the undersigned will, in accordance with
the Company's amended and restated certificate of incorporation, take all action
reasonably within his power to limit the Company's activities to winding up its
affairs and to dissolving the Company and liquidating the Trust Account.

          (b) If the Company seeks approval from its stockholders to consummate
a Business Combination within 90 days prior to the expiration of the 24 month
period following the Effective Date (assuming that the period in which the
Company may consummate a Business Combination has been extended under the
circumstances described in the Prospectus), the undersigned agrees to take all
such action reasonably within his power to ensure that the proxy statement
related to such Business


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Combination will seek stockholder approval for the plan of dissolution and
liquidation of Company in the event the stockholders do not approve such
Business Combination.

          (c) If: (i) no agreement has been executed and no letter of intent
with respect to a Business Combination has been signed by the Company prior to
the date that is 18 months after the Effective Date or (ii) no proxy statement
seeking the approval of the stockholders for a Business Combination has been
filed with the SEC by the date that is 30 days prior to the date that is 24
months after the Effective Date, the undersigned agrees to take, promptly
following either such date, all such action reasonably within his power to
convene a meeting of the board of directors of the Company to adopt and
recommend to the stockholders of the Company a plan of dissolution and
liquidation of the Company and, within five (5) business days of such date, to
file a proxy statement with the SEC seeking stockholder approval for such plan
of dissolution and liquidation.

          (d) Except with respect to any of the IPO Shares acquired by the
undersigned in connection with or following the IPO, the undersigned hereby
irrevocably: (i) waives any and all right, title, interest, cause of action or
claim of any kind (a "CLAIM") in or to all funds in the Trust Account and any
remaining net assets of the Company upon liquidation of the Trust Account and
dissolution of the Company; (ii) waives any Claim the undersigned may have in
the future as a result of, or arising out of, any contracts or agreements with
the Company, which Claim would reduce, encumber or otherwise adversely affect
the amounts held in the Trust Account; and (iii) agrees that the undersigned
will not seek recourse (legal, equitable or otherwise) against the Trust Account
for any reason whatsoever.

     3. In order to minimize potential conflicts of interest that may arise from
multiple affiliations, the undersigned agrees to present to the Company for its
consideration, prior to the undersigned's exploitation of that opportunity in
any way or the presentation to any other person or entity, any suitable
opportunity to acquire an operating business or any real property or related
assets, until the earlier of the consummation by the Company of a Business
Combination, the liquidation of the Company or until such time as the
undersigned ceases to be a special advisor of the Company, but subject, in each
case, to any pre-existing fiduciary obligations the undersigned might have,
which fiduciary obligations are disclosed to the Company's board of directors
prior to the Effective Date.

     4. The undersigned acknowledges and agrees that the Company will not
consummate any Business Combination involving a company affiliated with any of
the Insiders, unless the Company obtains an opinion from an independent
investment banking firm reasonably acceptable to Maxim Group LLC that the
Business Combination is fair to the Company's stockholders from a financial
perspective.

     5. Neither the undersigned, any member of the family of the undersigned,
nor any Affiliate of the undersigned will be entitled to receive, and will not
accept, any compensation for services rendered to the Company prior to the
consummation of the Business Combination; provided that the undersigned shall be
entitled to reimbursement from the Company for his out-of-pocket expenses
incurred in connection with seeking and consummating a Business Combination.

     6. The undersigned agrees that neither the undersigned, any member of the
family of the undersigned, nor any Affiliate of the undersigned will be entitled
to receive, or accept, and the undersigned, on behalf of the undersigned and the
aforementioned parties, hereby waives any right to, a finder's fee or any other
compensation in the event the undersigned, any member of the family of the
undersigned or any Affiliate of the undersigned originates a Business
Combination.

     7. The undersigned will escrow his Insider Shares for the period commencing
on the Effective Date and ending on the earlier to occur of: (i) the approval by
the Public Stockholders of the release of the Insider Shares from escrow; and
(ii) one (1) year following the consummation of a Business


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Combination, in each case subject to the terms of a Stock Escrow Agreement which
the Company will enter into with the undersigned and an escrow agent acceptable
to the Company.

     8. The undersigned agrees to be a member of the Board of Directors of the
Company until the earlier of the consummation by the Company of a Business
Combination or the liquidation of the Company. The undersigned's biographical
information furnished to the Company and Maxim and attached hereto as Exhibit A
is true and accurate in all respects, does not omit any material information
with respect to the undersigned's background and contains all of the information
required to be disclosed pursuant to Section 401 of Regulation S-K, promulgated
under the Securities Act of 1933, as amended. The undersigned's Questionnaire
furnished to the Company and Maxim and annexed as EXHIBIT B hereto is true and
accurate in all respects. The undersigned further represents and warrants to the
Company and Maxim that:

          (a) No petition under the Federal bankruptcy laws or any state
insolvency law has been filed by or against, or a receiver, fiscal agent or
similar officer was appointed by a court for the business or property of the
undersigned, or any partnership in which the undersigned was or is a general
partner at or within two years prior to the date hereof, or any corporation or
business association of which the undersigned was an executive officer at or
within two years prior to the date hereof;

          (b) The undersigned has not been convicted in any criminal proceeding
nor is the undersigned currently a named subject of a pending criminal
proceeding (excluding traffic violations and other minor offenses);

          (c) The undersigned has not been the subject of any order, judgment,
or decree, not subsequently reversed, suspended or vacated, of any court of
competent jurisdiction, permanently or temporarily enjoining the undersigned
from, or otherwise limiting, the following activities:

               (i) Acting as a futures commission merchant, introducing broker,
          commodity trading advisor, commodity pool operator, floor broker,
          leverage transaction merchant, any other person regulated by the
          Commodity Futures Trading Commission, or an associated person of any
          of the foregoing, or as an investment adviser, underwriter, broker or
          dealer in securities, or as an affiliated person, director or employee
          of any investment company, bank, savings and loan association or
          insurance company, or engaging in or continuing any conduct or
          practice in connection with such activity;

               (ii) Engaging in any type of business practice; or

               (iii) Engaging in any activity in connection with the purchase or
          sale of any security or commodity or in connection with any violation
          of Federal or State securities laws or Federal commodities laws;

          (d) The undersigned has not been the subject of any order, judgment or
decree, not subsequently reversed, suspended or vacated, of any Federal or State
authority barring, suspending or otherwise limiting for more than sixty (60)
days the right of the undersigned to engage in any activity described in
paragraph (c)(i) above, or to be associated with persons engaged in any such
activity;

          (e) The undersigned has not been found by a court of competent
jurisdiction in a civil action or by the Securities and Exchange Commission to
have violated any Federal or State securities law, and the judgment in such
civil action or finding by the Securities and Exchange Commission has not been
subsequently reversed, suspended, or vacated; and


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          (f) The undersigned has not been found by a court of competent
jurisdiction in a civil action or by the Commodity Futures Trading Commission to
have violated any Federal commodities law, and the judgment in such civil action
or finding by the Commodity Futures Trading Commission has not been subsequently
reversed, suspended or vacated.

     9. The undersigned has full right and power, without violating any
agreement by which the undersigned is bound, to enter into this letter agreement
and to serve as special advisor to the Company.

     10. The undersigned authorizes any employer, financial institution or
consumer credit reporting agency to release to Maxim and its legal
representatives or agents (including any investigative search firm retained by
Maxim) any information they may have about the undersigned's background and
finances (the "INFORMATION"). Neither Maxim nor its agents shall be violating
the undersigned's right of privacy in any manner in requesting and obtaining the
Information and the undersigned hereby releases them from liability for any
damage whatsoever in that connection.

     12. As used herein: (i) a "BUSINESS COMBINATION" shall mean an acquisition,
by merger, capital stock exchange, asset or stock acquisition, reorganization or
otherwise and as otherwise described in the registration statement relating to
the IPO, of an operating business in the homeland security defense industries or
a combination thereof, selected by the Company; (ii) "COMMON STOCK" shall mean
the common stock, par value $.0001 per share, of the Company; (iii) "INSIDERS"
shall mean all officers, directors and stockholders of the Company immediately
prior to the IPO; (iv) "INSIDER SHARES" shall mean all of the shares of Common
Stock owned by an Insider prior to the IPO; (v) "IPO SHARES" shall mean the
shares of Common Stock issued in the Company's IPO; (vi) "PRIVATE PLACEMENT"
shall mean the private placement of 3,200,000 warrants of the Company prior to
the IPO; (vii) "PROSPECTUS" shall mean the prospectus contained in the
registration statement relating to the IPO; (viii) "PUBLIC STOCKHOLDERS" shall
mean the holders of the securities issued by the Company in the IPO; and (ix)
"TRUST ACCOUNT" means the trust account in which the proceeds to the Company of
the IPO will be deposited and held for the benefit of the holders of the IPO
shares, as described in greater detail in the Prospectus.

     13. The undersigned hereby agrees that any action, proceeding or claim
against the undersigned arising out of or relating in any way to this Agreement
shall be brought and enforced in the courts of the State of New York or the
United States District Court for the Southern District of New York, and
irrevocably submits to such jurisdiction, which jurisdiction shall be exclusive.
The undersigned hereby waives any objection to such exclusive jurisdiction and
that such courts represent an inconvenience forum.

                                        Name: Constantinos Tsakiris


                                        /s/ Constantinos Tsakiris
                                        ----------------------------------------
                                        Signature



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                                    EXHIBIT A

Constantinos Tsakiris has served as a director since August 2006. Mr. Tsakiris
is the managing director and majority-owner of Paradise Navigation S.A., a
tanker fleet manager and operator based in Athens, Greece, a position he has
held since May 1996. Since July 2002 he has also been a director and
majority-owner of Paradise Tankers Corp., a tanker fleet owner. Since December
2005 Mr. Tsakiris has also been the director and majority-owner of Parsfial
Holdings, a Greek real estate company. He is the director and a majority owner
of the following companies, each of which is the owner of a single tanker:
Srefania Maritime Ltd. (since March 1999), Natalie Maritime Ltd. (since April
1999), Redina Maritime Ltd. (since December 1999), Aspropyrgos Maritime Ltd.
(since June 2002), Ikaros Maritime Ltd. (since November 2002), Daedalos Maritime
Ltd. (since April 2003). From June 2003 to March 2005, Mr. Tsakiris was the
director and majority-owner of Herculito Maritime Ltd., and from September 1997
to September 2003, he was the director and majority-owner of A.F. Maritime Ltd.,
each of which was a single tanker-owning company. Mr. Tsakiris is also the
majority owner of PAE Panionios NFC, a professionalsoccer club based in Greece.


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                                    EXHIBIT B

                                 ATTACHED HERETO


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