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KENNEDY SPACE CENTER, FLA. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center, a technician monitors the movement of the external tank as it is lifted out of the checkout cell. The tank will be lifted into high bay 1 for mating with the solid rocket boosters, or SRBs, already installed on the mobile launcher platform. Work to remove and replace the feed-through connector on the external tank will be done in parallel with integrated ET/SRB testing in preparation for space shuttle Endeavour to join the stack later in January. The STS-123 mission is targeted for launch on Endeavour in mid-March. The 25th assembly flight to the International Space Station, Endeavour's payload includes the Japanese Experiment Logistics Module Pressurized Section. Photo credit: NASA/Kim Shiflett