Bob Lazar claimed to have reverse-engineered alien propulsion at 'S-4' near Area 51, describing Element 115 fuel years before its synthesis.
A disc-shaped craft landed briefly on a French farm, leaving physical traces that were scientifically analyzed by the French government's official UFO research unit.
UFOs repeatedly hovered over nuclear missile silos at Malmstrom AFB, tracked by NORAD radar, as part of a broader wave at northern-tier military bases.
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.
The Air Force allegedly filmed a UFO landing at Holloman AFB and offered the footage for a documentary before withdrawing it at the last moment.
A photographer aboard a Brazilian Navy ship captured photos of a Saturn-shaped UFO over Trindade Island, endorsed by the Navy and the President of Brazil.