In Baikonur Kazakhstan Expedition 51 backup crewmembers are shown a map of Baikonur at a museum during pre-launch activities.

In Baikonur, Kazakhstan, Expedition 51 backup crewmembers Randy Bresnik of NASA (second from the left) and Sergey Ryazanskiy of the Russian Federal Space Agency (Roscosmos, second from the right) are shown a map of Baikonur at a local museum April 7 during pre-launch activities. They are serving as backups to Fyodor Yurchikhin of Roscosmos and Jack Fischer of NASA, who will launch April 20 on the Soyuz MS-04 spacecraft from the Baikonur Cosmodrome for a four and a half month mission on the International Space Station. NASA/Victor Zelentsov