Declassified UFO / UAP Document
UNIDENTIFIED AERIAL PHENOMENA: A BRIEFING BY THE AIR TECHNICAL INTELLIGENCE CENTER
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AI-Generated Summary
This 1952 ATIC briefing details the Air Force's systematic approach to investigating unidentified aerial phenomena. It reports that 40% of 698 investigated cases remain unexplained, necessitating continued research and the implementation of new photographic and radar-based collection methods.
This document is a transcript of a briefing prepared by the Air Technical Intelligence Center (ATIC) at Wright-Patterson Air Force Base, dated April 1, 1952. The briefing outlines the mission of the ATIC, which is the prevention of technological surprise in the air, and details the center's responsibility for investigating unidentified aerial phenomena. The document provides a historical overview of the investigation, noting that the current effort is a routine part of technical intelligence functions rather than an accelerated special project. The briefing discusses various lines of inquiry, including the possibility of interplanetary vehicles, guided missiles, and unconventional aircraft designs. It specifically reviews German rocket and aircraft research, such as the Sanger rocket-bomber, Horton all-wing designs, and Lippisch delta-wing aircraft, to determine if these technologies could explain the reported phenomena. The briefing also addresses the 'green fireball' phenomenon, noting that this specific category of sightings was turned over to the AF Cambridge Research Laboratories for investigation. The document details the ATIC's collection and analysis methods, which include the use of a cross-index filing system, plotting sightings on maps to identify patterns, and collaborating with scientific consultants, including Dr. J. A. Hynek and the Rand Corporation. The briefing presents statistical evaluations of 698 incidents reported since 1947. Of these, 237 were identified as celestial bodies, 70 as balloons, 84 as aircraft or debris, and 35 as rockets or flares. 91 incidents were not evaluated due to insufficient data, and 181 remained unexplained. The ATIC concludes that nearly 40% of the total reports are unexplained, and while they do not currently see a threat to national security, they intend to continue the investigation. Future plans include the implementation of radar-scope photography and the use of still cameras equipped with diffraction grids for spectrum analysis to better identify light sources. The briefing concludes with a question-and-answer session.
We don't know what is causing this unexplained forty percent. Since we don't know, we keep trying to find out.
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Official Assessment
The phenomena do not represent a threat to the security of the United States.
Of 698 incidents, 237 were celestial bodies, 70 were balloons, 84 were aircraft/debris, 35 were rockets/flares, 91 were not evaluated, and 181 remain unexplained.
Key Persons
- Kenneth ArnoldWitness of 1947 sighting
- Dr. E. SangerGerman scientist, rocket researcher
- Theodore Von KarmanScientific advisor
- Dr. J. A. HynekAstronomer, consultant
- Mr. KobernussBriefing participant