Many people don't get to see what really goes on in a professional runner's life. We see the medals, the wins, and the fast times, but what is it that these elite athletes are actually doing to prepare themselves for the big races. Justin Britton is a professional photographer and co-founder of the business A Runners Eye, who constantly travels across the U.S. and the world to take pictures of the greats during their training sessions and races. He gives us an exclusive look at his job and a new perspective that not a lot of people know much about.