Expedition 55 crew members during a press conference

Expedition 55 flight engineer Ricky Arnold of NASA, left, Soyuz Commander Oleg Artemyev of Roscosmos, center, and flight engineer Drew Feustel of NASA, right, are seen in quarantine, behind glass, during a press conference, Tuesday, March 20, 2018 a the Cosmonaut Hotel in Baikonur, Kazakhstan. Arnold, Artemyev, and Feustel are scheduled to launch to the International Space Station aboard the Soyuz MS-08 spacecraft on Wednesday, March 21.