Project Blue Book: US Air Force UFO Documents Revealed

Here are the top five things to know from the open files the U.S. Air Force Project Blue Book.

Amateur historian John Greenewald has spent nearly two decades requesting declassified information from the US government regarding UFOs.

Recently, he posted more than 100,000 pages of documents on the US Air Force's internal UFO investigations to the internet. Here are the top five things to know from the open files of Project Blue Book. Read more