ISS016-E-008971 (2 Nov. 2007) --- Astronauts Paolo Nespoli (foreground) representing the European Space Agency (ESA), Scott Parazynski (right) and Doug Wheelock, all STS-120 mission specialists, make preparations for the mission's fourth spacewalk in the Quest Airlock of the International Space Station while Space Shuttle Discovery is docked with the station.
Date November 2, 2007