STS-121 Mission Specialist Thomas Reiter second from left and Steven Lindsey are greeted Mike Leinbach.

After their arrival at the Shuttle Landing Facility to get ready for launch July 1, STS-121 Mission Specialist Thomas Reiter (second from left) and Commander Steven Lindsey are greeted (at right) by Center Director Jim Kennedy and Shuttle Launch Director Mike Leinbach. During the 12-day mission, the STS-121 crew will test new equipment and procedures to improve shuttle safety, as well as deliver supplies and make repairs to the International Space Station. This mission is the 115th shuttle flight and the 18th U.S. flight to the International Space Station. Photo credit: NASA/Kim Shiflett