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KENNEDY SPACE CENTER, FLA. - The crew for mission STS-121 is taking part in a Crew Equipment Interface Test (CEIT) inside the Space Station Processing Facility at NASA's Kennedy Space Center. Standing in front of a work stand are, left to right, Mission Specialists Thomas Reiter and Lisa Nowak, Mission Commander Steven Lindsey, Mission Specialist Michael Fossum, Pilot Mark Kelly, and Mission Specialists Stephanie Wilson and Piers Sellers. Reiter represents the European Space Agency (ESA) and will remain on the space station working with the station crew under a contract between ESA and the Russian Federal Space Agency. He will return to Earth aboard STS-116 or a Russian Soyuz. A CEIT provides hands-on experiences with equipment used on-orbit. Mission STS-121 is the second in the Return to Flight sequence and will carry on improvements that debuted during last year's STS-114 mission and build upon those tests. Launch is scheduled in July. Photo credit: NASA/Kim Shiflett