US fighter jets were ordered to shoot down a UFO over England during the Cold War, newly released files reveal. What appeared to be a massive "aircraft carrier" in the sky hovered before darting off undamaged, said one of the military pilots, who was later threatened by a well-dressed "unnamed man" if he "ever breathed a word" about the incident to anyone.
In another mysterious encounter, a passenger jet headed for London's Heathrow airport nearly smashed into a UFO described as a brown missile-shaped craft. Military authorities were unable to account for the 1991 near-confrontation. The incidents came to light in reports released by Britain's defense ministry. Neither report included an explanation.