In Orbiter Processing Facility 1 at NASA's Kennedy Space Center have been closed next month.

In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, the clamshell doors of space shuttle Atlantis' payload bay have been closed in preparation for the its move to the Vehicle Assembly Building next month. Atlantis is being prepared for the STS-135 mission, which will deliver the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts to the International Space Station. STS-135 is targeted to launch June 28, and will be the last spaceflight for the Space Shuttle Program. Photo credit: NASA/Jack Pfaller