Northrop converted 350 F-89Ds to J models, Air Defense Command's first fighter-interceptor to carry nuclear armament, its air-to-air rockets having a nuclear warhead. The aircraft on display, 52-1911, was the last in service with an operational unit when provided for preservation by the Maine ANG in July 1969. It is painted to represent F-89J 53-2509 assigned to the 449th FIS in the late 1950s, based at Ladd AFB, near Fairbanks AK. Hence it carries red arctic markings