STS-125 MS4 Massimino poses for a photo prior to EVA4

S125-E-009381 (17 May 2009) --- Astronaut Mike Massimino, STS-125 mission specialist, wearing the liquid cooling and ventilation garment that complements the Extravehicular Mobility Unit (EMU) spacesuit, is pictured in a hatch on the Earth-orbiting Space Shuttle Atlantis prior to the mission?s fourth session of extravehicular activity (EVA).