I suppose we'll never know for sure but personally I doubt the CIA had anything to do with the Hill abduction. They were driving late at night and Betty's later recollection of the aliens was similar to depictions of aliens in the contemporary Outer Limits show. I'd chalk it up to sleep deprivation and strange dreams.

There was an episode of a UFO TV show about an abduction and thr guy said he called the cops afterward and they took him to thr nearby Navy base for questioning. Sounds like a post-experiment psychoanalysis lol.