At six years old
, Ben was diagnosed with bone cancer in his right leg and had his fibula and tibia removed. He walks with a mechanical knee and prosthetic walking leg, which he switches out for a running leg to play sports (including soccer, baseball and children's triathlons). On Sunday, Ben completed the 150-yard swim and 4-mile bike ride and half the one-mile run when a screw came loose and his running leg broke in half
His mom was standing at the finish line, wondering what happened. 'It was only a mile, I knew he was tired, I was like, 'Where is he, where is he, where is he,' his mother, Kim Baltz, told CNN iReport. 'All of a sudden the announcer just said, 'Ladies and gentlemen, I want you to turn around and look at what's happening on the course' ...