Georgy Prokofiev
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Georgy (Yegor) Alekseyevich Prokofiev (born August 17, 1902, in Teleshovo, Vyazma District – died April 23, 1939, in Moscow) was a Soviet Air Forces balloonist who coordinated a military stratospheric balloon program in 1931–1939. On September 30, 1933, USSR-1 under Prokofiev's command set an unofficial[1] world altitude record of 18,501 metres (60,699 ft).[2]