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The STS-97 crew get a taste of the excitement of launch day as they exit the O&C Building to head for Launch Pad 39B. They are taking part in Terminal Countdown Demonstration Test (TCDT) activities that include emergency egress training and a simulated launch countdown. On the left (front to back) are Mission Specialists Carlos Noriega and Joe Tanner; on the right (front to back) are Commander Brent Jett, Pilot Mike Bloomfield and Mission Specialist Marc Garneau, who is a Canadian astronaut. Mission STS-97is the sixth construction flight to the International Space Station. Its payload includes…