Discovery's STS-120 crew pause for a portrait in front of one of the shuttle's main engines. They are (from left) mission specialist Scott Parazynski, Expedition 16 flight engineer Daniel Tani, mission specialist Stephanie Wilson, commander Pamela Melroy, mission specialist Douglas Wheelock, pilot George Zamka and mission specialist Paolo Nespoli, a European Space Agency astronaut from Italy. Credit: NASA/George Shelton.
