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Major General James D. Dave Bryan, U.S. Army (Ret.) is President of ManTech’s Defense System Group, its largest subsidiary. He joined ManTech in January 2008. Prior to joining ManTech he was the Sector Vice President, Executive Customer Relations for Global Defense C4I and Space, Northrop Grumman Corporation. General Bryan began his 34-year military career in 1970 as a signal officer in the Army. He later became commander of the 112th Special Operations Signal Battalion and 35th Airborne Signal Brigade. In 2000, he was named Vice Director of the Defense Information Systems Agency/Commander, Joint Task Force for Computer Network Operations and promoted to Major General. | 