KENNEDY SPACE CENTER, FLA. - Sitting inside the M-113 armored personnel carrier, the STS-115 crew members get instructions from Capt. George Hoggard, who is astronaut rescue team leader. The astronauts at left are Mission Specialist Heidemarie Stefanyshyn-Piper and Pilot Christopher Ferguson. At right are Commander Brent Jett and Mission Specialists Joseph Tanner and Daniel Burbank. Not seen is Mission Specialist Steven MacLean, who represents the Canadian Space Agency. The STS-115 crew are at NASA's Kennedy Space Center for Terminal Countdown Demonstration Test activities such as the M-113 training. They will also practice emergency egress from the launch pad and take part in a simulated launch countdown. Liftoff of mission STS-115 aboard Space Shuttle Atlantis is scheduled in a window beginning Aug. 27. Photo credit: NASA/Cory Huston