The US Air Force
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The US Air Force is the aerial warfare service branch of the United States Armed Forces. Over the years, it has collected and investigated reports of anomalous objects and phenomena in the sky, including through official investigation programs.
On this page, you'll find documents and analyses of historical investigations and sightings, alongside more recent articles and testimonies. Some reports have been explained, while others remain unresolved; an unexplained report is not, in itself, proof of an extraterrestrial origin.
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Common questions about The US Air Force
Has the US Air Force investigated UFOs?
Yes. The Air Force collected and investigated reports of unidentified aerial phenomena, and among other things, operated dedicated investigation programs. This site features documents and articles about some of that activity.
What was the US Air Force's Project Sign?
Project Sign was an early attempt by the Air Force to centralize and examine reports of flying saucers. The project documents described on this site cover activities from 1948–1949.
Did the Air Force manage to explain all UFO reports?
No. According to the materials on this site, investigations explained many of the reports, but some remained unexplained or without a definitive assessment.
Does an unexplained UFO report prove it's aliens?
No. It means that the available information was insufficient to identify the phenomenon, not that it's proof of an extraterrestrial origin.
What have US Air Force personnel said about UFOs?
This site features reports and testimonies from Air Force personnel, including descriptions of lights, objects, and incidents that were investigated. It's important to distinguish between a personal sighting or testimony and a finding that has been independently verified.
