Unidentified Flying Objects: Project "Grudge" (Technical Report No. 102-AC 49/15-100)

US Air Force, Air Materiel Command · 1949-08 · 413 pages · text by OCR, confidence 98%

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Incident No. 10 — 4 July 1947, 2004 hours, Boise, Idaho. An airline pilot and crew watched from the air two groups, (5 and 4 in number) of objects described as thin and smooth on the bottom and rough on top, silhouetted against sunset and flying "loose formation." They followed them for forty-five miles; therefore, had them in sight for approximately ten minutes. No further information was submitted. AMC Opinion: Since the sighting occurred at sunset, when light conditions change rapidly and illusory effects are most likely, the objects could have been ordinary aircraft, balloons, birds, or pure illusion. Insufficient information.

Cases discussed

The Ghost Rockets (Spökraketer), Scandinavia, 1946 1946
summer of 1946... mysterious aerial objects in Sweden, the "ghost rockets"
The Kenneth Arnold Sighting 1947
report of Kenneth Arnold of Boise, Idaho... Incident Number 17
The 1947 Flying Disc Craze: America's First Flying Saucer Wave 1947
Within the month following Arnold's report, the number of incidents reached a peak
The Green Fireballs over New Mexico 1948
"green fireballs" reported in the general vicinity of Albuquerque, New Mexico
The Fukuoka F-61 Black Widow Radar-Visual Intercept 1948
Incident No. 183... Fukuoka Area, Japan. Airborne radar observer in F-61

About this file

Report, from the classic collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model (mean confidence 98%); expect the odd misread word. 413 pages are in the text index: search them above, or from the library's search.