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STS111-E-5071
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STS111-E-5071

July 25, 2011
Cosmonaut Sergei Y. Treschev, seen on the aft flight deck, spends some of his final moments onboard the Space Shuttle Endeavour before moving over to the International Space Station (ISS). He will serve a lengthy tour of duty as flight engineer for the fifth crew to live and work aboard the orbiting outpost. He will be one of two Rosaviakosmos cosmonauts on the Expedition Five crew.