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KENNEDY SPACE CENTER, FLA. -- At Pad 39A, technicians install the replacement wrist joint for the Space Station Remote Manipulator System into Space Shuttle Endeavour's payload bay. The new wrist joint, called an Orbital Replacement Unit (ORU), will be installed next to the arm's Latching End Effector during the final of three planned spacewalks. Mission STS-111 is designated UF-2, the 14th assembly flight to the International Space Station. Endeavour's payload includes the Multi-Purpose Logistics Module Leonardo and Mobile Base System. The mission also will swap resident crews on the Station, carrying the Expedition 5 crew and returning to Earth Expedition 4. Liftoff of Endeavour is scheduled between 4 and 8 p.m. May 30, 2002