and the first Asian-American and ethnic Chinese mission commander, which occurred on his fourth and final flight—the tenth mission to the International Space Station in 2004. During his six-and-a-half-month stay aboard the station, Chiao performed numerous tasks including 20 science experiments and two repair and installation space walks, using the Russian ‘Orlan’ space suit, totalling 9 hours, 56 minutes of EVA time on this flight. Chiao was selected as an astronaut in 1990 and logged more than 229 days in space and 36 hours of extravehicular activity during his career. He retired from NASA in 2005.