jsc2017e115137

At their Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 53-54 prime and backup crewmembers Joe Acaba of NASA (left) and Shannon Walker of NASA (right) raise the United States flag Sept. 7 during traditional pre-launch ceremonies. Acaba, Alexander Misurkin of Roscosmos and Mark Vande Hei of NASA will launch Sept. 13 on the Soyuz MS-06 spacecraft for a five and a half month mission on the International Space Station. NASA/Victor Zelentsov

jsc2017e115137 (Sept. 7, 2017) --- At their Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 53-54 prime and backup crewmembers Joe Acaba of NASA (left) and Shannon Walker of NASA (right) raise the United States flag Sept. 7 during traditional pre-launch ceremonies. Acaba, Alexander Misurkin of Roscosmos and Mark Vande Hei of NASA will launch Sept. 13 on the Soyuz MS-06 spacecraft for a five and a half month mission on the International Space Station. Credit: NASA/Victor Zelentsov

Photographer Victor Zelentsov