Documents / Report
This National Security Agency release gathers COMINT message traffic classified up to Top Secret Umbra, including a message dated August 1978, and one message cites COS Taipei. The messages list radar tracking of unidentified flying objects by time window, count, direction of movement and altitude. Most entries describe the objects as probably balloons moving slowly toward the west, at altitudes from about 6,500 to 100,000 feet. The released text has the place names redacted.
Read from the scan by GLM-OCR; expect the odd misread word.
6. UNIDENTIFIED FLYING OBJECTS (UFO: 8019-1208. RADAR TRACKED 27 UFO (PROBABLY BALLOONS) MOVING FROM TOWARD WEST, PASSING SE OF #0016 NNN
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Report, from the nsa collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 25 pages are in the text index: search them above, or from the library's search.