STS112-E-05516 (14 October 2002) --- Astronaut David A. Wolf, STS-112 mission specialist, exits the Quest Airlock on the International Space Station (ISS) to begin the third and final scheduled session of extravehicular activity (EVA) for the STS-112 mission. Astronaut Piers J. Sellers (out of frame), mission specialist, joined Wolf on the spacewalk.