What is the crossword answer for the clue: U.F.O. pilots

ETS - a 3 letter word may be the answer you are looking for!

RHO - a 3 letter word may be the answer you are looking for!

ALFS - a 4 letter word may be the answer you are looking for!

ALIENS - a 6 letter word may be the answer you are looking for!

U.F.O. pilots

3 Character Answers:

ETS

RHO

4 Character Answers:

ALFS

6 Character Answers:

ALIENS