EXHIBIT 99.6


                                LOCK-UP AGREEMENT

         THIS LOCK-UP AGREEMENT (the "AGREEMENT") is made and entered into on
September 21, 2004, between James LLC (the "SERIES D HOLDER") and Markland
Technologies, Inc., a Florida corporation (the "COMPANY").

                                    RECITALS

         A. The Company proposes to enter into a Purchase Agreement (the
"PURCHASE AGREEMENT") with the Investors named therein (the "INVESTORS"),
pursuant to which, among other things, the Company will borrow certain sums in
consideration for, among other things, the issuance of secured convertible notes
in the aggregate initial principal amount of $5,200,000 ("NOTES") and warrants
("WARRANTS").

         B. The Series D Holder holds or controls 18,136 shares (the "SERIES D
SHARES") of the Company's Series D Cumulative Convertible Preferred Stock (the
"SERIES D STOCK").

         C. As a condition of consummating the transactions contemplated in the
Purchase Agreement, the Investors have required that the Series D Holder and the
Company execute this Agreement.

         NOW, THEREFORE, for and in consideration of the mutual covenants and
agreements set forth herein, and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, the Series D Holder and
the Company, intending to be legally bound, agree as follows:

         1.   From and after the date of this Agreement, the Series D Holder
              hereby irrevocably agrees it will not offer, pledge, sell,
              contract to sell, sell any option or contract to purchase,
              purchase any option or contract to sell, grant any option, right
              or warrant to purchase or otherwise transfer or dispose of,
              directly or indirectly (including by way of swap, pledge or other
              derivative transactions), or announce the offering of, any of the
              Series D Shares. Notwithstanding the foregoing, the Series D
              Holder shall be able to convert its Series D Shares without
              further limitation and sell the underlying common stock of the
              Company (the "UNDERLYING SHARES") in accordance with Rule 144,
              including Rule 144(k). The Company shall use its best efforts to
              assist (and shall coordinate the assistance of Company counsel)
              with respect to the removal of the restrictive legend from all
              Underlying Shares sold by the Series D Holder pursuant to Rule
              144.

         2.   In the event the Company fails to redeem all remaining Series D
              Shares held by the Series D Holder by January 15, 2005, the
              Company hereby agrees to issue the Series D Holder warrants to
              purchase 1,088,160 shares of the common stock of the Company,
              $.0001 par value per share, substantially in the form attached
              hereto as EXHIBIT A (the "PAYMENT WARRANTS"). The Company and the
              Series D Holder hereby confirm that both parties intend to comply




              with the provisions of the Securities Purchase Agreement, dated
              April 2, 2004, by and among the Company and the Investors named
              therein (the "APRIL 2 AGREEMENT"), so as not to cause any
              adjustments to the Per Share Purchase Price (as defined in the
              April 2, Agreement) pursuant to Section 4(g) of the April 2
              Agreement. Therefore, both parties agree that any obligation on
              the part of the Company to deliver Payment Warrants to the Series
              D Holder, is contingent on the expiration of the New Transaction
              Period, as that term is defined in the April 2 Agreement.

         3.   The Series D Holder hereby represents and warrants that neither it
              nor any of its affiliates beneficially owns or otherwise has the
              right to receive any shares of the Series D Stock, or any economic
              interest therein or derivative therefrom, other than the Series D
              Shares.

         4.   The Series D Holders and the Company each acknowledge and agree
              that this Agreement is entered into for the benefit of and is
              enforceable by the Investors and their successors and assigns.
              Accordingly, the parties understand and agree that any Investor
              shall have the right to seek any one or more remedies for any act
              in contravention of this Agreement, including obtaining injunctive
              relief and monetary damages against any one or more of the parties
              hereto.

         5.   This Agreement will terminate as of the first to occur of (i)
              notice from the Company and the Investors that the transactions
              contemplated by the Purchase Agreement shall have been terminated
              in accordance with their terms, and (ii) March 15, 2005.

         6.   This Agreement may not be amended, waived, restated, modified or
              assigned in any manner except by a written agreement executed by
              each of the parties hereto and then if and only if consented to in
              writing by the Investors.

         7.   Each party hereto shall notify the other and the Investors of any
              breach or purported breach of this Agreement in writing.

         8.   This Agreement may be executed in facsimile and in any number of
              counterparts, each of which when so executed and delivered shall
              be deemed an original, but all of which shall together constitute
              one and the same agreement.

         9.   If any provision of this Agreement is held to be invalid or
              unenforceable for any reason, such provision will be conformed to
              prevailing law rather than voided, if possible, in order to
              achieve the intent of the parties and, in any event, the remaining
              provisions of this Agreement shall remain in full force and effect
              and shall be binding upon the parties hereto.

         10.  The terms and provisions of this Agreement shall be construed in
              accordance with the laws of the State of New York, without regards
              to principles of conflicts of law, and the federal laws of the
              United States of America applicable therein.



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         IN WITNESS WHEREOF, each of the parties hereto has caused this
Agreement as of the day and year first above written.


                                         JAMES LLC


                                         By: /s/ Navigator Management Ltd.
                                             -----------------------------------
                                             Name:
                                             Title:


                                         MARKLAND TECHNOLOGIES, INC.


                                         By: /S/ KENNETH DUCEY, JR.
                                             -----------------------------------
                                             Name:  Kenneth Ducey, Jr.
                                             Title: President & Chief Financial
                                                    Officer




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