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At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 49-50 backup crewmembers Mark Vande Hei of NASA (right, far left) and Alexander Misurkin (right, center) and Nikolai Tikhonov (right, far right) of Roscosmos report to officials Aug. 30 at the start of final qualification exams. They are serving as backups to prime crewmembers Shane Kimbrough of NASA and Andrey Borisenko and Sergey Ryzhikov of Roscosmos who will launch on Sept. 24 (Kazakh time) on their Soyuz MS-02 vehicle from the Baikonur Cosmodrome in Kazakhstan for a five-month mission on the International Space Station.