Exhibit 6

AGREEMENT CONCERNING JOINT FILING
OF AMENDMENT NO. 1 TO SCHEDULE 13D

The undersigned, being duly authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule jointly on behalf of each such party.

The execution and filing of this agreement shall not be construed as an admission that the below-named parties are a group, or have agreed to act as a group.

Dated: December 9, 2009


		GENNX360 GVI HOLDING, INC.

		By: Name:		/s/ Matthew Guenther Matthew Guenther
		Title:		Vice President

		GENNX360 GVI ACQUISITION CORP.

		By:		/s/ Matthew Guenther

		Name:		Matthew Guenther
		Title:		Vice President

		GENNX360 CAPITAL PARTNERS, L.P.
		By: GenNx360 GP, LLC
		Its: General Partner

		By:		/s/ Lloyd G. Trotter

		Name:		Lloyd G. Trotter
		Title:		Managing Member

		GENNX360 GP, LLC

		By:		/s/ Lloyd G. Trotter

		Name:		Lloyd G. Trotter
		Title:		Managing Member

		GENNX360 MANAGEMENT COMPANY, LLC

		By:		/s/ Lloyd G. Trotter

		Name:		Lloyd G. Trotter
		Title:		Managing Member


		/s/ Ronal E. Blaylock

		Ronald E. Blaylock

		/s/ Arthur H. Harper

		Arthur H. Harper

		/s/ Lloyd G. Trotter

		Lloyd G. Trotter

GVI SECURITY SOLUTIONS INC SC 13D/A