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Leroy Chiao is a Chinese American engineer and former NASA astronaut. From 1991 to 2006, he logged six spacewalks and 229 hours in space over his four missions with NASA. Fluent in Mandarin and English, Chiao learned Russian prior to serving as Expedition Commander for Expedition 10 on the International Space Station in order to better communicate with the Russian cosmonauts. He voted from onboard the ISS during the 2004 U.S. presidential election, making him the first American to vote in a presidential election from space.