Vox Populi Forum
The Gary Seven episode had Robert Lansing and Terry Garr. He was an alien time traveler on the planet.
Tomorrow is Yesterday is first season where they get flung backward in time and accidently destroy a US Jet. And later capture a MP.
We discover while the pilot isn't important, his as yet unborn son will be.
The computer is obnoxious is a separate story line.
It is notable as the first time travel Trek story.
One should note, the writers didn't spend a lot of time discussing mutilating one's flaps and doodles as they were not clever enough writers to think of such clever story telling.
Alumni .... Conrad