F-104 Starfighter
From Memory Alpha, the free Star Trek reference
The F-104 Starfighter was a type of military interceptor aircraft used on Earth by the United States Air Force during the late 1950s through mid 1960s.
Captain John Christopher piloted an F-104, code-named Bluejay 4, in 1969 when he made visual contact with the USS Enterprise, which was perceived as a UFO. (TOS: "Tomorrow is Yesterday")
This aircraft was not identified by name on screen, but is derived from visual identification from its appearance in "Tomorrow is Yesterday". It was also identified as this type of craft in the Star Trek Concordance. The footage used on screen and the still shown here are from George AFB, California.
