Expedition Three Commander Frank Culbertson and Scott Horowitz have placed the mission sign at the entrance into Space Shuttle Discovery.

Expedition Three Commander Frank Culbertson (left) and STS-105 Commander Scott Horowitz (right), in the White Room at Launch Pad 39A, have placed the mission sign at the entrance into Space Shuttle Discovery. Both crews are at KSC to take part in Terminal Countdown Demonstration Test activities, which include 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 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