Expedition 31 Crew Prepares For Launch

Expedition 31 Flight Engineer Sergei Revin performs the tradition of signing one of the doors at the Cosmonaut Hotel on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka, and NASA Flight Engineer Joe Acaba aboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)