Bob Lazar claimed to have reverse-engineered alien propulsion at 'S-4' near Area 51, describing Element 115 fuel years before its synthesis.
US Air Force personnel at a NATO base in England reported close encounters with a triangular craft over multiple nights, supported by physical evidence and an official memo.
Fourteen schoolchildren and dozens of adults reported UFOs and humanoid figures across Pembrokeshire, Wales, creating the 'Welsh Triangle' phenomenon.
Logger Travis Walton was struck by a beam from a hovering disc and vanished for 5 days; six coworkers who witnessed the event passed polygraph tests.
Lavender farmer Maurice Masse encountered a landed craft with two beings who paralyzed him with a device; the landing left lasting physical traces in his field.
The first widely publicized alien abduction case in the US, featuring missing time, hypnotic regression, and the iconic Betty Hill star map.