Expedition 39/40 backup Flight Engineer Barry Wilmore signs a commemorative book at the center's museum.

At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 39/40 backup Flight Engineer Barry Wilmore of NASA (front, left) signs a commemorative book at the center’s museum March 6 as his backup crewmates, Alexander Samokutyaev of Roscosmos (front, center) and Elena Serova of Roscosmos (front, right) look on. Also participating in the back row were prime crewmembers Steve Swanson of NASA (back, left), Alexander Skvortsov of Roscosmos (back, center) and Oleg Artemyev of Roscosmos (back, right). Swanson, Skvortsov and Artemyev are preparing for their launch to the International Space Station from the Baikonur Cosmodrome in Kazakhstan March 26, Kazakh time, in their Soyuz TMA-12M spacecraft for a six-month mission.

NASA/Stephanie Stoll