The result of an investigation into PROJECT BLUE BOOK in 1969 by Dr Edward Condon. He started the investigation saying that all UFOs are "bunk", people who believed in them were "kooks", the authors of UFO books should be "horsewhipped" and that Blue Book was a waste of time. As a consequence, the report concluded that all UFO sightings were explainable and that UFOs didn't pose a defense threat.