Expedition 49 backup crew member NASA astronaut Mark Vande Hei participates in a crew press conference at the Gagarin Cosmonaut Training Center (GCTC), Friday, Sept. 2, 2016 in Star City, Russia.

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Keywords: 49, bill, center, city, conference, cosmonaut, expedition, gagarin, hei, ingalls, mark, nasa, preflight, press, rus, russia, space, star, training, vande