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KENNEDY SPACE CENTER, FLA. - In the Space Station Processing Facility at NASA Kennedy Space Center, STS-121 Mission Specialist Michael Fossum looks underneath the replacement trailing umbilical system reel assembly that will be installed on the International Space Station. He and other crew members -- Commander Steven Lindsey, Pilot Mark Kelly and Mission Specialists Lisa Nowak, Stephanie Wilson and Piers Sellers -- are at Kennedy to take part in the crew equipment interface test (CEIT).