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Astronaut Robert L. Satcher Jr., STS-129 mission specialist, uses a digital still camera to expose a photo of his helmet visor during the mission's first session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. Also visible in the reflections in the visor are various components of the station and astronaut Mike Foreman, mission specialist. During the six-hour, 37-minute spacewalk, Satcher and Foreman installed a spare S-band antenna structural assembly to the Z1 segment of the station's truss, or backbone. Satcher and Foreman also installed a set of cables for a future space-to-ground antenna on the Destiny laboratory and replaced a handrail on the Unity node with a new bracket used to route an ammonia cable that will be needed for the Tranquility node when it is delivered next year. The two spacewalkers also repositioned a cable connector on Unity, checked S0 truss cable connections, and lubricated latching snares on the Kibo robotic arm and the station's mobile base system.