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KENNEDY SPACE CENTER, FLA. -- The Expedition 5 and STS-111 crews pose at the Shuttle Landing Facility after their arrival to take part in Terminal Countdown Demonstration Test (TCDT) activities for launch of mission STS-111. From left, they are the Expedition Five crew -- Commander Valeri Korzun and Sergei Treschev, both of the Russian Space Agency, and Peggy Whitson -- and the STS-111 crew -- Pilot Paul Lockhart, Commander Kenneth Cockrell, and Mission Specialists Phillipe Perrin, of the French Space Agency, and Franklin Chang-Diaz. Expedition 5 will travel on Space Shuttle Endeavour to the International Space Station as a replacement crew for Expedition 4. The TCDT is a rehearsal for launch and includes emergency egress training, familiarization with payload and a simulated launch countdown. Mission STS-111 is a utilization flight that will deliver equipment and supplies to the Station. Along with the Multi-Purpose Logisitics Module Leonardo, the payload includes the Mobile Base System, part of the Canadian Mobile Servicing System, or MSS, and an Orbital Replacement Unit, the replacement wrist/roll joint for the SSRMS (Canadarm2). Launch of Endeavour is scheduled for May 30, 2002