A USAF RB-47 reconnaissance bomber tracked an object on radar, electronic countermeasures, and visually for 700+ miles across multiple states.
UFOs tracked on radar over the nation's capital on two consecutive weekends, triggering jet scrambles and the largest Pentagon press conference since WWII.
Two Eastern Airlines pilots observed a cigar-shaped craft with glowing windows pass their DC-3 at close range, prompting Project Sign's ET conclusion.
Captain Thomas Mantell died pursuing a large metallic UFO over Kentucky, becoming the first pilot death attributed to a UFO chase.
Private pilot Kenneth Arnold's sighting of nine unusual objects near Mount Rainier launched the modern UFO era and coined the term 'flying saucers.'
The US military fired over 1,400 anti-aircraft rounds at unidentified objects over LA weeks after Pearl Harbor, with a famous searchlight photo capturing the event.