Whiteman AFB triangle over missile silo

Terry Lovelace, an Air Force medic at Whiteman Air Force Base in Missouri, says that in 1975 he and an airman named Toby saw a silent triangular craft directly above one of the base's active nuclear missile silos.

The account comes from Lovelace's book Incident at Devils Den; no official record of the sighting has been released.

Sources: Lovelace, Incident at Devils Den