The Expedition 55 backup crewmembers pose for pictures in front of the Soyuz MS-08 spacecraft fit check activities.

AirshowAt the Baikonur Cosmodrome in Kazakhstan, the Expedition 55 backup crewmembers pose for pictures in front of the Soyuz MS-08 spacecraft March 5 as part of the crew’s first vehicle fit check activities. Alexey Ovchinin of Roscosmos (left) and Nick Hague of NASA (right) are serving as backups to the prime crew, Ricky Arnold and Drew Feustel of NASA and Oleg Artemyev of Roscosmos, who will launch March 21 in the Soyuz MS-08 spacecraft from Baikonur for a five-month mission on the International Space Station...NASA/Victor Zelentsov.