Out There....

In the sky! A bird? A plane? A ... UFO? - Chicago Tribune

A dozen witnesses including pilots saw a UFO hover over O'Hare Airport until suddenly darting off leaving a hole in the cloud cover. Other than all the eyewitness testimony there is no evidence. Officials first denied the story than admitted the reports but insist it was some cloud related event.

Was the ending of the movie Close Encounters of the Third Kind based on a real event?

That is the claim of some people contacting the UFO community. The claim is that a dozen people were picked and trained by our government to be taken to a distant planet light years away by a UFO and come back after ten years. Eight returned after a dozen years and spent a year getting debriefed. All the men died in the next few years of cancer, probably from radiation exposure from their trip or on the planet with the two suns.