Prime crewmember Alexander Misurkin lay flowers at the Kremlin Wall in Red Square in Moscow Sept. 1.

Expedition 53-54 prime crewmember Alexander Misurkin of Roscosmos (foreground) and his backup and fellow cosmonaut Anton Shkaplerov lay flowers at the Kremlin Wall in Red Square in Moscow Sept. 1 as part of traditional pre-launch ceremonies. Misurkin and Joe Acaba and Mark Vande Hei of NASA will launch Sept. 13 from the Baikonur Cosmodrome in Kazakhstan Sept. 13 on the Soyuz MS-06 spacecraft for a five and a half month mission on the International Space Station. Credit: NASA/Elizabeth Weissinger