North American's B-45 was the first jet bomber for the USAF, serving SAC from 1950 till 1959, but quickly superseded in the nuclear role during the early 50s by the B-47 Stratojet. A total of 143 were built, most 'C' models being completed as RB-45C reconnaissance aircraft, although this example was used latterly by Pratt & Whitney for engine testing, being flown to the Museum in 1971. Now housed inside in the marks of 47th BW (Light), which based B-45s at RAF Sculthorpe from 1952-58