The Report on Unidentified Flying Objects is a 1956 book by then-retired Air Force UFO investigator Edward J. Ruppelt, detailing his experience running Project Blue Book. The book was noted for its suggestion that a few UFO sightings might be linked to spikes of atomic radiation. Contemporary media summarized four topics discussed in the book:
There is "no real proof" that flying saucers exist—no reliable photographs, no "hardware". While the Air Force is officially dismissive of the spaceship theory, that conclusion is "far from unanimous". Some staff within the Air Force had produced a UFO analysis, called the "Estimate of the Situation", concluding that some UFOs were interplanetary spaceships. That analysis was rejected by a panel of scientists meeting in January 1953. Technological explanations were not considered: "No one at the meeting gave a second thought to the possibility that the UFOs might be super-secret US aircraft or a Soviet Development". In 1960, Ruppelt authored a second edition in which he reported being "positive" that UFOs do not exist.
Contents Ruppelt was a captain in the US Air Force who served as director of official investigations into UFOs: Project Grudge and Project Bluebook. During his time as director, Ruppelt had coined the term UFO. In the foreword, Ruppelt argues: "It is well known that ever since the first flying saucer was reported in June 1947 the Air Force has officially said that there is no proof that such a thing as an interplanetary spaceship exists. But what is not well known is that this conclusion is far from being unanimous among the military and their scientific advisers".
Introduction Ruppelt begins Chapter One with a tale, set in Summer 1952, where an unnamed F-86 fighter pilot fires on an unidentified target, only to be ridiculed as having 'cracked up' or panicked. Ruppelt claims the report on the incident was burned and never submitted to Bluebook—Ruppelt claims he learned of the incident through informal channels. Ruppelt describes how Bluebook handled income UFO reports. Many stories were classed "Insufficient Data for Evaluation", while a "Crackpot" file held reports from people "who had talked with flying saucer crews, who had inspected flying saucers that had landed in the United States, who had ridden in flying saucers, or who were members of flying saucer crews." In contrast, potentially-"good" reports were those from trusted, trained observers like higher-ranking military personnel. Ruppelt describes giving briefings to students at Air Force's Command and Staff school, Air Force Intelligence School, Office of Naval Research, as well as the Atomic Energic Commission's Los Alamos laboratory and Sandia Base. Ruppelt notes the discrepancy between public denials of official interest during the same era his groups was actively studying UFOs: "All of this time unnamed Air Force officials were disclaiming serious interest in the UFO subject. Yet every time a newspaper reporter went out to interview a person who had seen a UFO, intelligence agents had already been flown in, gotten the detailed story complete with sketches of the UFO, and sped back to their base to send the report to Project Sign. Many people had supposedly been "warned" not to talk too much. The Air Force was mighty interested in hallucinations."
1947 craze Chapter Two, "The Era of Confusion Begins", discusses the Kenneth Arnold UFO sighting and the subsequent 1947 flying disc craze. After initial skepticism, sightings from military personnel caught the attention of the Air Force Technical Intelligence Center. Ruppelt explains that "as more UFO's were observed near the Air Force's Muroc Test Center, the Army's White Sands Proving Ground, and atomic bomb plants, ATIC's efforts became more concentrated." Ruppelt described the Maury Island Incident, in which original saucer witness Kenneth Arnold was given mundane lava rocks claimed to have come from flying saucer. Arnold contacted Air Force investigators, who flew to investigate. On their return, the two investigators died when their plane suffered engine trouble.
Twining memo
The Report on Unidentified Flying Objects was the first to reveal that on September 23, 1947, Lieutenant General Nathan Twining had issued a memo to Brigadier General George Schulgen of the Army Air Forces. The subject line of the memo read "AMC Opinion Concerning 'Flying Discs.'" The general tone of the memo was that unidentified objects seen in the skies by military personnel were not weather, astronomical or other phenomenon but rather objects that warranted further investigation. Twining wrote "The phenomenon reported is something real and not visionary or fictitious." The Twining memo should not be confused with the "Cutler/Twining memo" dated July 14, 1954, included as part of the alleged Majestic 12 documents in 1985. The Federal Bureau of Investigation (FBI) declared those documents to be "completely bogus", and many ufologists consider them to be an elaborate hoax.
1948: pilot sightings and green fireballs Chapter Three, "The Classics" discusses the three most prominent reports of 1948: The Mantell Incident, where a National Guard pilot died chasing a UFO; The Chiles-Whitted Incident, where airline pilots reported a near-collision with a UFO; and the Gorman Dogfight, where a National Guard pilot engaged a UFO. Ruppelt discusses alleged incidents at Oak Ridge and Hanford, both major US atomic plants. Ruppelt discusses a report from Germany, dated November 23, 1948, which marked the first report featuring visual contact while simultaneously being picked up on radar. Chapter Four, "Green Fireballs, Project Twinkle, Little Lights, and Grudge", being with descriptions of green fireballs first seen over New Mexico in November 1948. Ruppelt recalls "They might be common meteorites, psychologically enlarged flares, or true UFO's, but whatever they were they were playing around in one of the most sensitive security areas in the United States." Ruppelt reports that a conference was called at Los Alamos in February 1949. In Summer 1949, the Air Force's Cambridge Research Laboratories established "Project Twinkle" to attempt to photograph the objects; it yielded no results.
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