Technology at Rio 2016 Paralympics sparks advances and controversy

Here's how good technology for prosthetic running blades has become. Greek runner Michail Seitis set a world record for his division with a time of 49.66 seconds in the men's 400-meter final on Thursday. He came in sixth place out of eight runners. The five who finished ahead of him were double amputees. "Oh, to be bilateral," said U.S. sprinter David Prince, a friend and training partner of Seitis', as he watched the race unfold.