Most Americans believe there's intelligent life on other planets, but they aren't very worried about it.
That's according to a recent Rasmussen Reports poll.
According to the poll, 67% have never seen a UFO and don't know anyone who has.
But 19% say they or someone they know have seen a UFO.
Thirteen percent (13%) said they aren't sure.
According to the poll, a majority said they do not think UFOs pose a national security threat to the U.S.