Marlon Shirley says missing a leg never stopped him from wanting to compete at a higher level. Shirley is the previous world record holder in the 100-meter amputee race. His record also includes gold medals in the Sydney and Athens Paralympics. Yet, it wasn't easy for Shirley. The son of a drug addicted mother, he was abandoned at the age of 3 and bounced through the foster system before reaching the pinnacle of Paralympic competition. Marlon Shirley joins us to tell his story.