Just a few years ago, Roderick Sewell was a homeless teenager with no legs who was failing school. Today, he’s a world-class athlete, the first in his family to graduate college and the first above-the-knee double amputee to complete a Ironman, the 140-mile triathlon considered the world's most grueling race. Sewell says he’s so much more than “just a guy with no legs,” and he wants people to know that they, too, can overcome any obstacle in their own lives.