Space suit designer Oleg Gerasimenko shares some tips on the Sokol suit with NASA astronaut Rex Walheim during a fit check at the Zvezda facility on Monday, March 28, 2011, in Moscow. The crew of the final shuttle mission traveled to Moscow for a suit fit check of their Russian Soyuz suits that will be required in the event of an emergency. ( NASA Photo / Houston Chronicle, Smiley N. Pool )