STS_135_ MEDIA

The crew of STS-135, from left,  pilot Doug Hurley, commander Chris Ferguson, mission specialist Sandy Magnus and mission specialist Rex Walheim pose for a group photo following the crew media briefing at the Johnson Space Center on Thursday, June 30, 2011, in Houston. ( NASA Photo / Houston Chronicle, Smiley N. Pool )

JSC2011-E-060793 (30 June 2011) --- The crew of STS-135, from left, pilot Doug Hurley, mission specialists Rex Walheim and Sandy Magnus, and commander Chris Ferguson pose for a group photo following the crew media briefing at the Johnson Space Center in Houston on June 30, 2011. Photo credit: NASA Photo/Houston Chronicle, Smiley N. Pool

Photographer Smiley N. Pool