Posted: Jun 12, 2020 / 09:55 AM PDT Updated: Aug 10, 2020 / 12:13 PM PDT SHARE Unexplained UFO reports from the files of the U.S. Air Forces Project Blue Book. Compiled by Don Berliner, for the Fund for UFO Research. ✕ Read next > Read next > Next ✕ ✕ Read next > Next story in Cancel Read next > Next story in Cancel