Expedition 53 Soyuz Commander Alexander Misurkin of Roscosmos, standing left, waits to enter the Soyuz simulator with Joe Acaba and Mark Vande Hei of NASA for the Soyuz qualification exams, Thursday, Aug. 31, 2017 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls)

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