Expedition 47 crew members, Flight Engineer Jeff Williams of NASA, left, Soyuz Commander Alexey Ovchinin of Roscosmos, center, and Flight Engineer Oleg Skripochka of Roscosmos, right, arrive at the launch pad to board the Soyuz TMA-20M spacecraft for launch, Saturday, March 19, 2016 at the Baikonur Cosmodrome in Kazakhstan. Ovchinin, Williams, and Skripochka will spend the next five and a half months aboard the International Space Station.