Documents / Official release
This U.S. Department of War file, cleared under NND 843014, collects USAFE intelligence cables dated 4 November 1948 and addressed to General Cabell. One cable relays a 307th Bomb Group report of an unidentified jet-propelled aircraft seen off the west coast of Holland on 5 September 1948. Another says flying saucers keep being reported, including one that hovered over Neubiberg Air Base. It passes on Swedish Air Intelligence's view that the objects may come from an unknown technology, possibly from outside the earth.
From the source: Release of 2026-05-08 Incident: 11/8/48, Netherlands. NARA Record Group 341, catalogue id 110448. An Air Force intelligence report from November 1948 relating to unidentified flying objects and flying saucers.
USAFE 10 'lT 1524 OONPIDEN!:I:AL 4 Nov 1948 From OI OB Following report on unidentified aircraft sighting comes from 307th Bomb Group which participated in operation daggar. Unidentified aircraft was sighted by three crews of the group at 14022 5 Sep 48 off west coast of Holland, 5155N/0355E. Altitude of all aircraft was 30,000 feet. When first sighted the unidentified A/C was cruiamng at a normal jet speed, heading 120 degrees. Soon after f'ir~t. seen, A/C began leaving smoke trails and condensation trails accompanied by sudden acceleration and then climb. Generali agreed by observers that it was a single jet propelled A/C employing probably rocket assists with tremendous reserve power, more than normal curising speed tor jets of the 1947 variety. Never within identification range; its course did not indicate its purposeo Our evaluation of the above: B-2. (iND OF ITDI) NW90307 Docld:34714985 Page 4
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 7 pages are in the text index: search them above, or from the library's search.