General Dynamics Corporation is an American aerospace and defense company formed by mergers and divestitures. It is the world's fifth-largest defense contractor based on 2012 revenues. General Dynamics is headquartered in West Falls Church, Fairfax County, Virginia.The company has changed markedly in the post-Cold War era of defense consolidation. It has four main business segments: Marine Systems; Combat Systems; Information Systems and Technology; and Aerospace. Until 1993, when production was sold to Lockheed, General Dynamics' former Fort Worth Division manufactured the Western world's most-produced jet fighter, the F-16 Fighting Falcon.