The story of Project Blue Book is based on true event happened in the early 50?s. At that time the United States air force investigated reports and sightings of undefined flying objects, the program called ?Project Blue Book?. Project Blue Book investigated over 10.000 UFO sightings and more then 700 of those sightings remained unidentified. Many UFO researchers feel that the investigations of the UFO sightings were unprofessional and unscientific. The program used poor research methods and researchers were too eager to label a mysterious sighting as "identified" phenomena. Individual researchers and UFO organisations believe that members of Project Blue Book were pressured to "identify" UFO sightings to calm the public hysteria about UFOs.