Quarantined Expedition 31 Flight Engineer Joe Acaba answers reporters questions from behind glass during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with Acaba, Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)