Oldest runner at New York City Marathon says his life started after retirement

In many ways, Koichi Kitabatake is just like any other runner preparing for Sunday's New York City Marathon: He's nervous for the big race but plans to draw energy from crowds of spectators to keep pace. At 91 years old, though, the Japanese runner is the oldest of all 55,000 runners registered for this year's race. The World's Bianca Hillier has his story.