JSC2008-E-031815 (2 April 2008) --- Astronauts Michael J. Massimino (center), John M. Grunsfeld (right), Michael T. Good (right background) and Andrew J. Feustel, all STS-125 mission specialists, participate in an extravehicular activity (EVA) hardware training session in the Space Vehicle Mockup Facility at NASA's Johnson Space Center.
Photographer Blair