Expedition 52 backup crew members: Mark Vande Hei of NASA, left, Alexander Misurkin of Roscosmos, center, and Norishige Kanai of the Japan Aerospace Exploration Agency (JAXA) answer questions from the press outside the Soyuz simulator ahead of their Soyuz qualification exams, Thursday, July 6, 2017 at the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia.