Final space shuttle crew training session in the NBL

Photograph final space shuttle crew training session in the NBL with STS-135 Mission Specialists Sandy Magnus & Rex Walheim. STS-135 Commander Chris Ferguson serves as Intravehicular suit-up lead, Pilot Doug Hurley serves as robotic arm operator. Mission Specialists Sandy Magnus & Rex Walheim in the water. Photo Date: June 13, 2011. Location: NBL - Pool Topside. Photographer: Robert Markowitz

JSC2011-E-054013 (13 June 2011) --- NASA astronaut Chris Ferguson, STS-135 commander, participates in a training session in the simulation control area in the Neutral Buoyancy Laboratory (NBL) at the Sonny Carter Training Facility near NASA's Johnson Space Center. Photo credit: NASA

Photographer ROBERT MARKOWITZ