On the fixed service structure on Launch Pad 39A review emergency exit procedures.

On the fixed service structure on Launch Pad 39A at NASA's Kennedy Space Center in Florida, STS-125 crew members review emergency exit procedures. From left are Mission Specialist Mike Massimino, Andrew Feustel and John Grunsfeld and Pilot Gregory C. Johnson. Space shuttle Atlantis' 11-day flight is targeted for launch May 12 and will include five spacewalks to refurbish and upgrade the telescope with state-of-the-art science instruments. As a result, Hubble's capabilities will be expanded and its operational lifespan extended through at least 2014. Photo credit: NASA/Cory Huston