STS-125 crew training. Astronauts Grunsfeld and Feustel

JSC2008-E-118445 (26 Sept. 2008) --- Astronauts Scott Altman (right), STS-125 commander; Mike Massimino and Megan McArthur, both mission specialists, participate 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.