Article Photos: Man climbs Chicago skyscraper using bionic leg 12/15

  Zac Vawter, a 31--year-old amputee, emerges after walking up the stairs of the Willis Tower in Chicago, Sunday, Nov. 4, 2012, to become the first person to climb the 103 floors of one of the world's tallest skyscrapers with a bionic leg. Vawter was wearing a prosthetic leg controlled by his mind while participating in "SkyRise Chicago." (AP Photo/Chicago Sun-Times, Brian Jackson) CHICAGO LOCALS OUT, MAGS OUT