Space shuttle Atlantis moved to prepare for launch and possible rescue mission.
The space shuttle Atlantis is rolled from the Orbiter Processing Facility to the Vehicle Assembly Building at Kennedy Space Center in Cape Canaveral, Florida July 22, 2005. Atlantis is scheduled for launch in September on a mission to the International Space Station. Atlantis will also stand ready to serve as a rescue ship if needed by the crew of the shuttle Discovery. Discovery is scheduled for launch on July 26. REUTERS/Joe Skipper JLS/TZ