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NASA astronaut Robert Behnken, STS-130 mission specialist, participates in the mission's first session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the 6-hour, 32-minute spacewalk, Behnken and astronaut Nicholas Patrick (out of frame), mission specialist, relocated a temporary platform from the Special Purpose Dexterous Manipulator, or Dextre, to the station's truss structure and installed two handles on the robot. Once Tranquility was structurally mated to Unity, the spacewalkers connected heater and data cables that will integrate the new module with the rest of the station's systems. They also pre-positioned insulation blankets and ammonia hoses that will be used to connect Tranquility to the station's cooling radiators during the mission's second spacewalk.