Documents / FOIA release
This Central Intelligence Agency briefing from 22 August 1952 presents the Office of Scientific Intelligence review of the Air Force flying saucer investigation, with attachments dated 14 and 19 August. It traces sightings from 1947 and explains most as balloons, aircraft, astronomical bodies or atmospheric effects. About 20% remain unexplained. The briefing rules out US or Soviet weapons and space ships. Its main concerns are psychological warfare, false alerts to air defense, and civilian saucer groups.
Read from the scan by GLM-OCR; expect the odd misread word.
who was familiar with this report any an anti-collision light installation on a Capital Airlines airplane. This new safety device, a light mounted on the nose of the airplane, oscillates back and forth laterally similar to those installed on some ambulances and police cars. A check with Capital Airlines revealed that an airplane fitted with such a light had "checked in" while flying near Pittsburgh at the exact time and place of the reporting sighting. Let us then now to astronomical phenomena. In the daytime some planets, particularly Venus, can be seen clearly as a bright white object, even at high noon under certain conditions. At night, meteors of various varieties have been mistaken for measuring lights. The luminous meteor trail of ionized gas has been picked up by radar and at times misunderstood. This ionized trail may remain visible to the eye for as long as one hour. Natural phenomena in the Earth's atmosphere have caused many misinterpretations. High altitude "jet streams" traveling at high velocities, temperature inversions and conditions of turbulent mixing of air of greatly different temperatures and densities exist and are not charted. They account for optical as well as radar aberrations in a number of cases. In one case 6.
FOIA release, from the cia-readingroom 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. 29 pages are in the text index: search them above, or from the library's search.