Stock Photo - At the Gagarin Cosmonaut Training Center (GCTC) in Star City, Russia, the Expedition 3940 prime and backup crew members answer questions from reporters during a news conference March 6. From left to right are prime crew members Steve Swanson of NASA, Alexander Skvortsov of Roscosmos, Oleg Artemyev of Roscosmos, GCTC head Sergei Krikalev, and backup crew members Elena Serova and Alexander Samokutyaev of Roscosmos and Barry Wilmore of NASA. 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.