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.
A seismic event, explosion, and glowing object on the Berwyn Mountains created the 'Welsh Roswell,' with allegations of military crash retrieval.
Four police officers across two states chased a luminous UFO for 86 miles; Blue Book's 'Venus' explanation was rejected by its own scientific consultant.
Over 200 students and teachers at a Melbourne school witnessed a silvery disc land in an adjacent field before authorities allegedly suppressed the story.
A teenager and two police officers independently witnessed a massive silent craft with pulsating red lights near Exeter, NH, forming the basis of an influential book.