JSC2011-E-059386 (11 May 2011) --- In this high-angle wide shot, STS-135 flight director Kwatsi Alibaruho, (center with back toward camera), and astronaut Steve Robinson (center, facing camera), CAPCOM, work in the Mission Control Center at NASA?s Johnson Space Center during a simulation exercise with the crew on May 11, 2011. Photo credit: NASA Photo/Houston Chronicle, Smiley N. Pool