Expedition 51 crewmember Jack Fischer enters the Soyuz MS-04 spacecraft during a final training session.

In the Integration Facility at the Baikonur Cosmodrome in Kazakhstan, Expedition 51 crewmember Jack Fischer of NASA enters the Soyuz MS-04 spacecraft April 14 during a final training session. Fischer and Fyodor Yurchikhin of the Russian Federal Space Agency (Roscosmos) will launch April 20 on the Soyuz MS-04 spacecraft for a four and a half month mission on the International Space Station. Credit: NASA/Gagarin Cosmonaut Training Center/Andrey Shelepin