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STS-102 Mission Specialists Susan Helms, Yury Usachev and James Voss clasp hands showing their unity as the Expedition Two crew who will be replacing Expedition One on the International Space Station. Behind them can be seen the tops of the solid rocket booster and external tank on Space Shuttle Discovery. The STS-102 crew is at KSC for Terminal Countdown Demonstration Test activities, which include the emergency training and a simulated launch countdown. STS-102 is the eighth construction flight to the Space Station, with Discovery carrying the Multi-Purpose Logistics Module Leonardo. Expedition One will return to Earth with Discovery. Launch on mission STS-102 is scheduled for March 8.