15-16-38-44-2: Expedition 40/41 backup crewmembers Terry Virts of NASA (left) Soyuz Commander Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos, center) and Flight Engineer Samantha Cristoforetti of the European Space Agency (right) arrive at the Baikonur Cosmodrome in Kazakhstan May 15 for final pre-launch training. The trio is backing up the prime crew --- Soyuz Commander Max Suraev of Roscosmos, NASA Flight Engineer Reid Wiseman and Flight Engineer Alexander Gerst of the European Space Agency --- who will launch May 29, Kazakh time, in their Soyuz TMA-13M spacecraft from Baikonur for a 5 ½ month mission on the International Space Station. NASA/Victor Zelentsov jsc2014e045549