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KENNEDY SPACE CENTER, FLA. -- In the Space Station Processing Facility at NASA's Kennedy Space Center, the starboard integrated truss, known as S6, is half way through its rotation. The truss is being rotated in order to remove and replace lower deck batteries. The final starboard truss in the assembly of the International Space Station, the S6 is scheduled to fly on the STS-119 space shuttle mission, whose launch date is not yet determined. Photo credit: NASA/Kim Shiflett