Three crew members of Expedition 42 prepare to return to Earth on Mar. 11, 2015 after a 167-day mission on the International Space Station. Expedition 42 commander Barry Wilmore of NASA and flight engineers Alexander Samokutyaev and Elena Serova of the Russian Federal Space Agency (Roscosmos) board the returning spacecraft. US NASA astronaut Terry Virts who will stay on as Commander of Expedition 43 tweeted this image of the crew boarding the Soyuz for the ride home. Cosmonaut Alexander Samokutyaev whose nickname is "Sasha" was last on. The Tweet had this comment "Sasha closing the hatch- пока Саш.".