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KENNEDY SPACE CENTER, FLA. -- The crew members of mission STS-120 gather for breakfast before resuming their terminal countdown demonstration test activities at NASA's Kennedy Space Center. From left are Mission Specialists Stephanie Wilson, making her second spaceflight and Daniel Tani, slated to join the Expedition 16 crew; Pilot George Zamka, making his first spaceflight; Commander Pamela Melroy, the second woman to command a shuttle mission; and Mission Specialists Scott Parazynski, making his fifth spaceflight; Paolo Nespoli, representing the European Space Agency; and Doug Wheelock, who will be performing three spacewalks on his first mission. The terminal countdown demonstration test provides astronauts and ground crews an opportunity to participate in various simulated countdown activities, including equipment familiarization and emergency training. The STS-120 mission will deliver the U.S. Node 2 module, named Harmony, aboard space shuttle Discovery to the International Space Station. Launch of Discovery on mission STS-120 is targeted for Oct. 23 at 11:38 a.m. EDT on a 14-day mission to the International Space Station. Photo credit: NASA/Kim Shiflett