AirshowAt the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 55 crewmember Ricky Arnold of NASA (center) plants a tree in his name March 15 in traditional pre-launch activities. Assisting him are his crewmates, Oleg Artemyev of Roscosmos (left) and Drew Feustel of NASA (right). They will launch March 21 on the Soyuz MS-08 spacecraft from the Baikonur Cosmodrome on a five-month mission to the International Space Station...NASA/Victor Zelentsov.