A former NASA engineer claims he saw a nine-foot alien while monitoring a space mission in 1991. Clark McClelland was allegedly part of a team based at the Kennedy Space Center in Cape Canaveral, Florida, when he spotted the extra-terrestrial humanoid. The 'entity', he says, stood on two legs and approached two U.S. astronauts, that he would not name, for one minute and seven seconds in the space shuttle bay.