Sary Shagan is a Soviet/Russian missile-defense and directed-energy weapons test range located in Kazakhstan along the western shore of Lake Balkhash. Operational since the late 1950s, the range hosted Soviet ABM, anti-satellite, and high-energy laser tests during the Cold War.
A 1973 cia document declassified as part of the May 22, 2026 pursue Release 02 (src-pentagon-second-batch-ufo-release-2026-05) reports a Soviet intelligence source’s observation at Sary Shagan: a “luminous, bright-green unidentified object” forming “concentric circles” over several minutes before dissipating, with no accompanying sound.
The Sary Shagan record adds to the USSR/Kazakhstan UAP corpus alongside the 1994 State Department Tajik Air ET-assessed cable already in the pursue-release-01-catalog.