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CAPE CANAVERAL, Fla. -- NASA Administrator Charlie Bolden talks about bookending the space agency's Space Shuttle Program following the successful STS-135 mission to the International Space Station. Four astronauts brought Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett