Depends on what you mean by "documented."
See the work of John Mack, David Jacobs, Budd Hopkins, and/or Close Encounters Of The Fourth Kind: Alien Abduction, UFOs, and the Conference at M.I.T. – May 30, 1995 by C.D.B. Bryan.
Yes, but I mean documented and admitted too by a standing agency. I rather liked the movie based on their work. So far no one has testified to.Congress in the open forum about individual beings. Where there are crafts there is something controlling them could be AI, or advanced beings