Expedition 51 crewmember Jack Fischer make their way to the Kremlin Wall in Red Square in Moscow April 3.

Walking in a driving rainstorm, Expedition 51 crewmember Jack Fischer of NASA (right) and his wife Elizabeth make their way to the Kremlin Wall in Red Square in Moscow April 3 to lay flowers where Russian space icons are interred. Fischer and Fyodor Yurchikhin of the Russian Federal Space Agency (Roscosmos) will launch April 20 on the Soyuz MS-04 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a four and a half month mission on the International Space Station. Photo: NASA/Rob Navias