Expedition 51 Flight Engineer Jack Fischer of NASA, answers a question during a press conference on Wednesday, April 19, 2017, at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for April 20 and will carry Fischer and Soyuz Commander Fyodor Yurchikhin of Roscosmos into orbit to begin their four and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)