Documents / Official release
This Air Materiel Command file, released by the U.S. Department of War, holds Incident Summary Sheets 173 through 233, sent under a 1949 transmittal. Most of the sheets record sightings of unidentified aerial objects in 1948 and early 1949. They cover Santa Fe, New Mexico, San Pablo, California, Honolulu, Kentwood, Louisiana, and Jackson, Mississippi. Each sheet gives the observer's details and the object's size, speed and shape, and often an investigator's note on how reliable the witness seemed. The file ends with a blank guide for investigating reports, including radar sightings.
From the source:Release of 2026-05-08 Incident: N/A, N/A. NARA Record Group 38, catalogue id 143685. Each of these incident summaries includes a "Check-List - Unidentified Flying Objects" that contains details about the incident. Many summaries also include witness lists or statements and other narrative reports or descriptions.
“Cooper”1 page
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Control tower personnel on duty at Fairfield Suisun AFB, Fairfield, Calif., first sighted object at 1,000 to 2,000 feet north of field in a 5° climb heading southeast over field. Started to climb at about 400 to 500 MPH to 20,000 feet. Climb seemed erratic like change to pace. Tower personnel put 8-power binoculars on object. All that could be seen was a circular light one to 2 feet in diameter. Light had intensity of a Ramp floodlight and was so bright that it blanked out any silhouette (if any) when sighted in binoculars. Weather balloon released 45 to 35 minutes previous to sighting but was lost ten minutes after released. Personnel inside tower could not hear any sound. No exhaust trail.
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Official release, 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. 144 pages are in the text index: search them above, or from the library's search.