>>34538
Unfortunately it's fake. For some reason the organisers of the Los Angeles Olympics in 1984 decided to have a flying saucer over the stadium during the closing ceremony. Skip to 5:38 to see it.
By the way, Bill Cooper thought it was a real UFO. According to him, there was no helicopter holding the fake saucer in the air. He justifies this by saying that it would have been too dangerous to stage it (what if the cable broke and the UFO fell on the people below?).