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KENNEDY SPACE CENTER, FLA. -- Members of space shuttle Atlantis' STS-122 crew pose for a group portrait in front of Atlantis' external tank following a simulated launch countdown at Launch Pad 39A. From left are Mission Specialists Rex Walheim and Leland Melvin; Commander Steve Frick; Pilot Alan Poindexter; and Mission Specialists Leopold Eyharts, Stanley Love and Hans Schlegel. Schlegel and Eyharts are with the European Space Agency. Eyharts will remain on the International Space Station as a flight engineer for Expedition 16 following the STS-122 mission. The exercise is part of terminal countdown demonstration test, or TCDT, activities at NASA's Kennedy Space Center. The TCDT is a dress rehearsal for launch and also provides astronauts and ground crews with equipment familiarization and emergency egress training. On mission STS-122, Atlantis will deliver the Columbus module to the International Space Station. The European Space Agency's largest single contribution to the station, Columbus is a multifunctional, pressurized laboratory that will be permanently attached to U.S. Node 2, called Harmony. The laboratory will expand the research facilities aboard the station, providing crew members and scientists from around the world the ability to conduct a variety of experiments in the physical, materials and life sciences. Atlantis' launch is targeted for Dec. 6. Photo credit: NASA/Kim Shiflett