The meticulous account of the top military brass on UFOs in the United States. Written and documented by the former head of the Air Force Project Blue Book, the federal organization in charge of a formal government study of UFO's. "It is without question the most satisfactory and satisfying evaluation of saucer sightings to appear in print." --Cleveland Plain Dealer "Ruppelt's book is an objective, calmly written work that should be in the hands of every sober student of the UFO mystery." --Baltimore Sun "His investigations, as his writings indicate, were thorough, unbiased and competent. I can think of no one better qualified to write on the Air Force activities in this regard. His book is a splendid account of this work, readable and enjoyable. It should be of wide interest to both the professional and the layman." --F.C. Durant III, President International Astronautical Fed.