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This file, from NICAP and CUFOS, collects US Air Force Office of Special Investigations records from 1949 on a Project Grudge special inquiry into a sighting at Rogue River, Oregon, on 24 May 1949. NACA Ames Laboratory employees Gilbert Rivera and Don Heaphy described a silvery pancake-shaped object about 30 feet across that sped off like a jet. An annotated analysis that follows rejects the radar kite explanation and concludes that the case must remain unexplained.
“Office of Special Investigations”7 pages
## UNDEVELOPED LEADS ## DISTRICT OFFICE NO. 19, FAIRFIELD-SUISUN AFB ## AT MOFFETT FIELD, CALIFORNIA At Moffett Field, California, will interview all witnesses and obtain all facts on "unidentified objects" sighted, using the inclosed guide for reference, and will report by OSI Form 0-208 with completed guide as in-closure to DO #5.
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