AirshowExpedition 56 backup crewmembers arrive at the launch site at the Baikonur Cosmodrome in Kazakhstan May 19 for final training.

AirshowExpedition 56 backup crewmembers Anne McClain of NASA (left), Oleg Kononenko of Roscosmos (center) and David Saint-Jacques of the Canadian Space Agency arrive at the launch site at the Baikonur Cosmodrome in Kazakhstan May 19 for final training following a flight from their training base in Star City, Russia. They are the backups to Serena Aunon-Chancellor of NASA, Sergey Prokopyev of Roscosmos and Alexander Gerst of the European Space Agency who will launch June 6 on the Soyuz MS-09 spacecraft from the Baikonur Cosmodrome for a six-month mission on the International Space Station...NASA/Victor Zelentsov.