Out of this world! Can you guess the U.F.O. pilots?

The crossword answer “U.F.O. pilots is ETS” is referencing the concept of extraterrestrial spacecraft or UFOs having pilots who are likely to be extraterrestrial beings. ETS is an acronym for extraterrestrial species, implying that the pilots of the UFOs are non-human entities. This crossword question is likely to be a clue in a themed puzzle related to science fiction or space exploration. The answer is a tongue-in-cheek play on the popular cultural fascination with aliens and their existence in the universe.