U.S. astronaut Steven Swanson, left, and Russian cosmonaut Alexander Skvortsov, crew members of the mission to the International Space Station, speak with relatives during pre-launch preparations at the Russian-leased Baikonur cosmodrome in Kazakhstan, March 25, 2014. Cosmonaut Oleg Artemyev is at center background.

AP Photo/Maxim Shipenkov

U.S. astronaut Steven Swanson, left, and Russian cosmonaut Alexander Skvortsov, crew members of the mission to the International Space Station, speak with relatives during pre-launch preparations at the Russian-leased Baikonur cosmodrome in Kazakhstan, March 25, 2014. Cosmonaut Oleg Artemyev is at center background.