Documents / Report
This National Security Agency release, labeled Part G of its Communications Intelligence (COMINT) reports, contains undated, heavily redacted message traffic. The intercepts record radar tracking of unidentified flying objects, usually several at a time, moving westward at altitudes of roughly 5,000 to 99,000 feet. Many are marked as probable balloons, and one entry names Makung and objects crossing a strait. One report describes two unidentifiable objects flying at about 930 km/h on 5 June and says it could not be determined whether they were aircraft, missiles or something else.
“radar tracked”7 pages
F. RADAR TRACKING OF UNIDENTIFIED FLYING OBJECTS: ONE.
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Report, from the nsa collection. 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. 25 pages are in the text index: search them above, or from the library's search.