As otherworldly visitors and UFOs hit the big screen amid serious revelations from the Pentagon indicating that flying saucers are not a thing of fantasy, Jonathan Margolis looks at whether true believers are delusional or simply ahead of the curve T his week, Steven Spielberg, one of the greatest living directors , will take on a subject explored decades ago in the classic Close Encounters of the Third Kind . His new film, Disclosure Day, is about aliens. But this time, there’s a slight twist.