Documents / Official release
This Central Intelligence Agency Directorate of Operations intelligence information report covers November 1972 to November 1973 and is based on a former Soviet citizen who served at the Sary Shagan weapons testing range in the USSR. It gives limited information on the range's facilities, security, a warhead checkout unit and the System-75 (SA-2) and System-300/Aldan (ABM-1 GALOSH) warheads, and passes on rumors of laser research. It also describes the source's late summer 1973 sighting of a silent green circular mass that formed concentric circles and faded within minutes.
From the source:Release of 2026-06-12 Incident: December, 1973, USSR. This CIA Intelligence Information Report from December 1973 provides information on the Soviet Sary Shagan Weapons Testing Range, including details about its facilities, weapons systems (System-75 SA-2 and System-300/Aldan warheads), rumored laser weapon research, and unidentified aerial phenomenon observed at the site. A more redacted version of this report has been available on CIA's public website.
“Headquarters”1 page
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unidentified phenomenon at Site 7. While watching a sport competition between Canada and the USSR on television, he stepped outside for some air and observed an unidentified sharp (bright) green circular object or mass in the sky. The object was situated west of the site at an angle of sighting of approximately 70 degrees. The altitude of the object was undeterminable. (Field Comment: Although there were no clouds in the sky that evening, Source believed that the green mass would have been higher than cloud level. Source could not estimate the diameter of the object.) Within 10 to 15 seconds of observation, the green circle widened and within a brief period of time several green concentric circles formed around the mass. Within minutes the coloring disappeared. There was no sound, such as an explosion, associated with the phenomenon. (Field Comment: Source had no opinion as to what this phenomenon was. There was no resultant rumors. Source could not provide any further details.)
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Official release, from the pursue 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. 3 pages are in the text index: search them above, or from the library's search.