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At the Baikonur Cosmodrome in Kazakhstan, Expedition 55 crewmember Ricky Arnold of NASA flashes a thumbs up sign as he enters his Soyuz spacecraft during the crew’s first vehicle fit check activities. Arnold, Drew Feustel of NASA and Oleg Artemyev of Roscosmos will launch March 21 in the Soyuz MS-08 spacecraft from Baikonur for a five-month mission on the International Space Station.