S125-E-009404 (17 May 2009) --- Astronauts Scott Altman (right), STS-125 commander; and John Grunsfeld, mission specialist, assist astronaut Michael Good (partially out of frame), mission specialist, in the donning of his Extravehicular Mobility Unit (EMU) spacesuit on the middeck of the Earth-orbiting Space Shuttle Atlantis in preparation for the mission?s fourth session of extravehicular activity (EVA).