Fort Gregg-Adams, in Prince George County, Virginia, United States, is a United States Army post and headquarters of the United States Army Combined Arms Support Command / Sustainment Center of Excellence, the U.S. Army Quartermaster School, the U.S. Army Ordnance School, the U.S. Army Transportation School, the Army Sustainment University, Defense Contract Management Agency, and the U.S. Defense Commissary Agency. Wikipedia