The Unexplained UFO Cover Up Cases and The End of Project Blue Book

On December 17, 1969 the Secretary of the Air Force announced the termination of Project Blue Book, the Air Force program for the investigation of UFOs. The decision to discontinue UFO investigations was based on an evaluation of a report prepared by the University of Colorado entitled, “Scientific Study of Unidentified Flying Objects;” a review of the University of Colorado’s report by the National Academy of Sciences; past UFO studies; and Air Force experience investigating UFO reports during the past two decades.