Expedition 55 crew members display the keys used to start the Soyuz launch sequence

jsc2018e025597 - In the Korolev Museum at the Baikonur Cosmodrome in Kazakhstan, Expedition 55 crew members Drew Feustel of NASA (left), Oleg Artemyev of Roscosmos (center) and Ricky Arnold of NASA (right) display the keys used in the Cosmodrome blockhouse to start the Soyuz booster launch sequence March 16 during a traditional preflight tour of the museum. They will launch March 21 on the Soyuz MS-08 spacecraft for a five-month mission on the International Space Station.