Bob Lazar claimed to have reverse-engineered alien propulsion at 'S-4' near Area 51, describing Element 115 fuel years before its synthesis.
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.
Unknown craft repeatedly hovered over the nuclear weapons storage area at Loring AFB during a wave of UFO incursions at nuclear bases across the US.
Police officer Lonnie Zamora witnessed a landed egg-shaped craft with two figures that left physical traces investigated by the FBI and Project Blue Book.
Navy photographer Delbert Newhouse filmed bright maneuvering objects over Utah; Navy analysis concluded they were 'intelligently controlled vehicles.'
The US military initially announced recovery of a 'flying disc' near Roswell, NM before retracting the statement, creating the most famous UFO controversy in history.