Documents / Report
This Top Secret Air Intelligence Division Study No. 203, prepared jointly by USAF and ONI intelligence and dated 10 December 1948, analyzes about 210 reported flying object incidents in the United States. It concludes that some type of flying object has been observed, but that its identification and origin cannot be determined. The study weighs domestic explanations such as weather balloons, rockets, flying wing aircraft and celestial phenomena against possible Soviet devices based on German flying wing designs. Its appendices include selected incident reports and descriptions of flying wing aircraft.
From the source: Release of 2026-07-10 Incident: 12/10/48, Virginia. This file contains a U.S. Air Force (USAF) Air Intelligence Division study, “Analysis of Flying Object Incidents in the United States,” Study No. 203, dated 12/10/1948. The analysis includes an assessment of various reported unidentified flying object (UFO) incidents and theories to account for their nature and origin. Overall, the study assesses that “it appears that some object has been seen; however, the identification of that object cannot be readily accomplished.” The study offers that two “reasonable” origins might account for the phenomena: technologies of a domestic or foreign origin. It also suggests that, if foreign, it is prudent for the United States to assume that UFO observations are attributable to scientific, military, or intelligence activities of the Soviet Union, and, in that case, to take seriously the threat such objects may pose. The file also contains contemporary UFO reports and examples of experimental “flying wing” type aircraft planforms that might account for certain commonly reported UFO characteristics. AARO Comment: This file appears to be an earlier draft version of the file contained in DOW-UAP-D094, whose content is substantively similar.
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have been made near Oak Ridge, Tenn., Las Cruces, N. M., and in the general area of the Hanford Works in Oregon. Generally, sightings have not been made over what we consider strategic industrial areas. The reason for this might be either that the flying objects have been observed only enroute to or from missions over these more concentrated strategic areas, or that the Soviets obtained sufficient information during their World War II liaison with U.S. industry to satisfy their intelligence requirements and have a more active requirement for information on industries and areas which were not available to them during World War II contacts. This is of interest in connection with the sightings near Oak Ridge, Las Cruces, and in the general area of the Hanford Works since these establishments were not, and are not, accessible to Soviet collectors of photographic intelligence. c. Test of U.S. Defenses. It is possible that the use of Soviet flying objects over the U.S. is intended only to determine the ability of the U.S. defenses to spot foreign aircraft. This would be of extreme importance to the U.S.S.R. in the event that a one-way all-out attack of Soviet strategic bombers is planned. Ability to operate over the U.S. uninhibited at a time when the U.S. is supposedly re-arming and putting great stress on defenses would provide valuable information on which to base estimates for probability of success in bombing strategic objectives in the U.S. d. Familiarization Flights over U.S. Territory. This possible reason is perhaps the most improbable. It is assumed that, should this purpose be involved, other purposes are probably also accomplished in its execution. Provided the U.S.S.R. has unusually high performance aircraft they might find it advantageous to familiarize themselves with the topography of the U.S. in anticipation of future combat missions to strategic targets.
Report, from the pursue collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 67 pages are in the text index: search them above, or from the library's search.