Two Boeing B-47 Stratojet bombers sit on the flight line, surrounded by ground crew preparing them for their next sortie. Entering service in the early 1950s, the B-47 was the United States Air Force's first mass-produced swept-wing jet bomber, giving Strategic Air Command an unprecedented combination of speed and range. Its radical design, including podded jet engines and a bicycle-style landing gear, set the pattern for jet bomber development for decades to come. Project: 218710