Expedition 53 backup crew member Shannon Walker of NASA is seen as she and Anton Shkaplerov of Roscosmos and Scott Tingle of NASA start their Soyuz 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 (NHQ201708300008)

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