The accounts below deal with dissapperances that are alien in nature. It appears that the people encountered some type of alien or alien vehicle and were heard from again.
Oct 21, 1978
Bass Strait, Australia
Summary: A pilot disappeared after his radio transmissions seem to indicate he had spotted a UFO.
Nov 23, 1953
Keeneewaa Point, Lake Superior
Summary: A F-89 sent to intercept a UFO detected on radio disappeared without a trace.