For almost two decades, the US Air Force officially investigated over 12,000 UFO sightings under a program known as Project Blue Book. In this documentary, we trace the full story of unidentified flying objects. From the first reports in 1897 to the landmark year of 1947, when the term "flying saucers" was born, through to the official closure of Project Blue Book in 1969. Secret military aircraft, thousands of witness accounts, declassified Air Force files. We uncover what was really in the sky, the science behind the investigations, and the 701 cases that were never solved. #ProjectBlueBook #UFOHistory #coldwar #militaryhistory #aviationhistory submitted by /u/Live-Butterscotch908 [link] [comments]