ISS005-E-21771 (28 November 2002) --- Astronaut Michael E. Lopez-Alegria, STS-113 mission specialist, works on the newly installed Port One (P1) truss on the International Space Station (ISS) during a session of extravehicular activity (EVA). The end effector of the Canadarm2 / Space Station Remote Manipulator System (SSRMS) and Earth�s horizon are visible in right frame.