Expedition 53 crew members: Joe Acaba of NASA, left, Alexander Misurkin of Roscosmos, center, and Mark Vande Hei of NASA are seen ahead of two days of qualification exams, Wednesday, Aug. 30, 2017 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia. Photo Credit: (NASA/Bill Ingalls) Expedition 53 Qualification Exams (NHQ201708300017)

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