Rockwell B-1 Lancer

The B-1 Lancer is a supersonic strategic bomber with variable-sweep wings. The origins of the B-1 date back to the 1960s in a search for a supersonc bomber with sufficient range annd payload to replace the B-52 Stratofortress, but would develop into a subsonic low level long-range bomber. After several production delays the first B-1Bs entered service in 1986 with the United States Air Force.