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Astronaut Carl E. Walz (left), Expedition Four flight engineer, cosmonaut Yuri I. Onufrienko, mission commander, and astronaut Daniel W. Bursch, flight engineer, are photographed prior to a mission training session in the Space Vehicle Mockup Facility at the Johnson Space Center (JSC). The crew members are attired in training versions of the full-pressure launch and entry suit. Onufrienko represents Rosaviakosmos