(07/18/2001) -- STS-105 Commander Scott Horowitz is ready to take the wheel of the M-113 armored personnel carrier that is part of emergency egress training at the pad. The training is part of Terminal Countdown Demonstration Test activities, which also include a simulated launch countdown and familiarization with the payload. Other STS-105 crew members taking part are Pilot Rick Sturckow and Mission Specialists Daniel Barry and Patrick Forrester; and the Expedition Three crew, Commander Frank Culbertson, and cosmonauts Vladimir Nikolaevich Dezhurov and Mikhail Tyurin. 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 current Expedition Two crew members on the Station will return to Earth on Discovery. Launch of Discovery is scheduled no earlier than Aug. 9, 2001