The B-47 Stratojet is one of the most important aircraftever designed by The Boeing Company. It was the world's first large swept-wingaircraft, ushering in a long line of jet bombers and civil transports. Duringthe Cold War in the 1950s, the B-47 became the backbone of the U.S. Air ForceStrategic Air Command (SAC) medium-bomber fleet, a primary deterrent to nuclearwar at a time when that possibility was most threatening.