1949: The YF-94 Starfire first flew. Later, during May 1950, the F-94A reached operational service with Air Defense Command (ADC), its principal operator, and soon replaced the piston-engined North American F-82 Twin Mustang in the all-weather interceptor role. It was followed by the F-94B, a refined model that proved to have greater engine reliability and a more spacious cockpit. The F-94C was equipped with a thinner wing, a more powerful Pratt & Whitney J48 engine, and a new Hughes E-5 fire control system. (USAF Image)
