STS-113, the 16th American assembly flight and 112th overall American flight to the International Space Station (ISS), launched on November 23, 2002 from Kennedy's launch pad 39A aboard the Space Shuttle Orbiter Endeavour. The main mission objective was the the installation and activation of the Port 1 Integrated Truss Assembly (P1). The first major component installed on the left side of the Station, the P1 truss provides an additional three External Thermal Control System radiators. Weighing in at 27,506 pounds, the P1 truss is 45 feet (13.7 meters) long, 15 feet (4.6 meters) wide, and 13 feet (4 meters) high. Three space walks, aided by the use of the Robotic Manipulator Systems of both the Shuttle and the Station, were performed in the installation of P1. In this photograph astronaut and mission specialist John B. Herrington, (center left frame), participates in the mission's third space walk. The forward section of the Space Shuttle Endeavour, docked to the Pressurized Mating Adapter (PMA-2) on the ISS, is visible center frame. The station's Canadarm2 appears to stand in between the shuttle and Herrington.