STS-125 crew members listen to a trainer reviewing emergency exit procedures from the pad.

In the slidewire basket landing area on Launch Pad 39A at NASA's Kennedy Space Center in Florida, STS-125 crew members listen to a trainer reviewing emergency exit procedures from the pad. From left are Mission Specialists Andrew Feustel, Michael Good, Megan McArthur and John Grunsfeld, Commander Scott Altman, Pilot Gregory C. Johnson and Mission Specialist Mike Massimino. 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