President Kennedy arrives at Homestead AFB, Florida, 1962.

According to claims in a rare video,
George Adamski met with President Kennedy at the White House in late
1961 and passed on a letter to him from human looking
extraterrestrials. In addition to giving advice
on the Cuban missile crisis, the alleged letter also contained an
invitation for Kennedy to meet with the extraterrestrials. If Kennedy
did attend such a meeting, it may explain why he was certain about
human looking extraterrestrial life; made undisclosed trips to Air
Force bases to deal with the UFO issue; and why he instructed NASA to
cooperate with the USSR on joint space and lunar missions, and to
release classified UFO files.