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This Project Blue Book file, released through The Black Vault, collects US Air Force records from 1950 to 1959 on the movie film Nicholas Mariana shot at Great Falls, Montana on 15 August 1950. It includes the OSI interview report, letters about borrowing and copying the film, and a 1956 Douglas Aircraft analysis. Blue Book's own findings were not consistent: one letter lists the cause as unknown, while later memos conclude the objects were probably two F-94 jets.
“Headquarters”7 pages
to Mr. A. M. Rochlen, Santa Monica, California (Cont) concern of the Air Force who will continue to investigate them regardless of how low this percentage may become. However, we wish to reiterate the conclusions of all these studies with regard to the "unknowns": 1. There is total lack of evidence that the phenomena observed have inimical or hostile forces behind them. 2. There is a total lack of evidence that they are interplanetary vehicles. 3. There is a total lack of evidence that they represent technological developments outside the range of present day scientific knowledge. 4. There is a total lack of evidence that they constitute any threat to the security of our country. We must apologize for the delay in replying to your letter; unfortunately, we did not receive it until the 26th of April. Sincerely, HAROLD E. WATSON Brigadier General, USAF Commander 1355. 22 PERM TEMP 90 DAYS INITIAL
Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 114 pages are in the text index: search them above, or from the library's search.