B-17G "Flying Fortress" No. 44-83690 B-17G-90-DL-44-83690 "Flying Fortress" is a heavy bomber manufactured by the Douglas Aircraft Company in Long Beach, California. Douglas was one of two companies in addition to Boeing, designated to manufacture B-17s during World War II. General features of the B-17 include its mid-wing monoplane design, aluminum-clad exterior, four radial engines, massive wing structure, and heavy armament. Greenfield, Kent. American Strategy in World War II: A Reconsideration. Baltimore: Johns Hopkins Press, 1963. B-17G "Flying Fortress" No. 44-83690 B-17G-95-DL "Flying Fortress" No. 44-83690 is a historic B-17 Flying Fortress Heavy bomber located at the Aviation Museum, Grissom Air Force Base in Pipe
RAF Bomber Command aircrew of World War II aircrew were given the task of flying a required number of operations, an "operational tour", usually of about 30 operations (missions in USAAF terminology). On completion of an operational tour the airman (and often his complete crew as they tended to remain very tight-knit, always flying together) would be "screened" (taken off operational flying) and split up as they received their future postings which would frequently be serving at Operational Training Units or Heavy Conversion Units preparing the next groups of young bomber crews for their postings to operational squadrons. Between March 1943 and the early summer of 1944 the