The STS-107 crew share a humorous moment on Launch Pad 39A during Terminal Countdown Demonstration Test activities. From left are Commander Rick Husband, Payload Specialist Ilan Ramon (the first Israeli astronaut), Pilot William "Willie" McCool, Mission Specialists Lauarel Clark and David Brown; in the foreground (back to camera) is Payload Commander Michael Anderson. The TCDT also includes a simulated launch countdown. STS-107 is a mission devoted to research and will include more than 80 experiments that will study Earth and space science, advanced technology development, and astronaut health and safety. Launch is planned for Jan. 16, 2003, between 10 a.m. and 2 p.m. EST aboard Space Shuttle Columbia.