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CAPE CANAVERAL, Fla. - At NASA's Kennedy Space Center in Florida, STS-126 Mission Specialist Sandra Magnus is ready to take her turn driving the M-113 armored personnel carrier. Magnus and the other crew members are at Kennedy for pre-launch preparation known as Terminal Countdown Demonstration Test, or TCDT. The training provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization and a simulated launch countdown. On the STS-126 mission, space shuttle Endeavour's crew will deliver equipment and suppli…
