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KENNEDY SPACE CENTER, FLA. -- In the Orbiter Processing Facility, STS-123 Mission Specialist Richard Linnehan makes a hands-on inspection of the thermal protection system tiles on the underside of space shuttle Endeavour. He and other crew members are at NASA's Kennedy Space Center for a crew equipment interface test, a process of familiarization with payloads, hardware and the space shuttle. The STS-123 mission is targeted for launch on space shuttle Endeavour on Feb. 14. It will be the 25th assembly flight of the station. Photo credit: NASA/Kim Shiflett