S116-E-06645 (16 Dec. 2006) --- Astronaut Robert L. Curbeam, Jr., STS-116 mission specialist, participates in the mission's third planned session of extravehicular activity (EVA) as construction resumes on the International Space Station. Astronaut Sunita L. Williams, (out of frame), STS-116 mission specialist, also participated in the 7-hour, 31-minute spacewalk. A blue and white Earth provides the backdrop for the scene.