STS-125 crew members review emergency exit procedures from the pad with trainers.

Near the bunker on Launch Pad 39A at NASA's Kennedy Space Center in Florida, STS-125 crew members review emergency exit procedures from the pad with trainers. Beginning from left (behind the trainer) are Commander Scott Altman, Mission Specialists Andrew Feustel, John Grunsfeld, Mike Massimino and Megan McArthur, Pilot Gregory C. Johnson and Mission Specialist Michael Good. 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