Is alien invasion movie "Battle: Los Angeles" actually based in fact?

In next month's Battle: Los Angeles, invading aliens go to war with the American military. It's science fiction...except that a panel of UFO experts claims it's factual. At a recent Sony Pictures press conference, the studio emphasized the movie's "based in fact" premise by giving us a chance to chat with a pair of… » 2/25/11 4:24pm 2/25/11 4:24pm