(07/20/2001) -- The Expedition Three crew practices emergency egress from the orbiter as they head to the slidewire basket. Leading is Commander Frank Culbertson, followed by cosmonauts Vladimir Nikolaevich Dezhurov and Mikhail Tyurin. Both the STS-105 and Expedition Three crews are at Kennedy Space Center participating in a Terminal Countdown Demonstration Test, a dress rehearsal for launch. The activities includes emergency egress training, a simulated launch countdown and familiarization with the payload. Mission STS-105 will be transporting the Expedition Three crew, several payloads and scientific experiments to the International Space Station aboard Space Shuttle Discovery. The Expedition Two crew members currently on the Station will return to Earth on Discovery. The mission is scheduled to launch no earlier than Aug. 9, 2001