In 1972 Boeing proposed a three engines short version of the 747-200 (known as 747-300x) to compete the DC-10 and L-1011. The project became the four engines with short fuselage 747SP launched in 1974.
F-102A Delta Dagger - part of the Century Series (F-101 F-4) and the 1st operational supersonic US jet fighter. It also had an internal weapons bay. When retired it was fitted out QF-102 Full Scale Aerial Target (FSAT) drone.