Project Blue Book: The US Air Force's Investigation of UFOs

In fear of threat to national security, the United States Air Force conducted investigations on thousands of UFO sightings that took place over the course of two decades.
In fear of threat to national security, the United States Air Force conducted investigations on thousands of UFO sightings that took place over the course of two decades.

Extraordinary UFO sightings from the US Air Force's Project Blue Book

Saucers Over Washington: the History of Project Blue Book – Pieces

Do Records Show Proof of UFOs?

Project Blue Book (@historybluebook) • Instagram photos and videos

Classified UFO documents released

My time as a UFO investigator for the government

How the Pentagon Started Taking U.F.O.s Seriously

INVASION! (of privacy) – Pieces of History

Public Interest in UFOs Persists 50 Years After Project Blue Book

UFO hearing features historic testimony from Pentagon officials