Mission Specialist James Voss poses in his launch and entry suit he will wear during a simulated launch countdown.

STS-102 Mission Specialist James Voss poses in his launch and entry suit that he will wear during a simulated launch countdown. He and other crew members are taking part in Terminal Countdown Demonstration Test activities, which include the simulation. Voss is also part of the Expedition Two crew who will be replacing Expedition One on the International Space Station. He will serve as a flight engineer during the crew’s four-month residence on the Station. 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