The redesigned external fuel tank, designated ET-118, that will launch Space Shuttle Atlantis on mission STS-115 is offloaded from the Pegasus barge that carried it from the Michoud Assembly Facility in New Orleans. The tank will be moved into the Vehicle Assembly Building and lifted into a checkout cell for further work. It will fly with many major safety changes, including the removal of the protuberance air load ramps. Photo credit: NASA/Kim Shiflett