NASA Associate Administrator for the Human Exploration and Operations Mission Directorate Bill Gerstenmaier escorts Expedition 55 flight engineer Drew Feustel of NASA as he prepares to board the Soyuz MS-08 spacecraft for launch, Wednesday, March 21, 2018 at the Baikonur Cosmodrome in Kazakhstan. Feustel and his crewmates Ricky Arnold of NASA and Oleg Artemyev of Roscosmos will spend the next five months living and working aboard the International Space Station. Photo Credit: (NASA/Joel Kowsky)