The story behind 'Dinosaur 13'

It’s a legal battle 67 million years in the making. The dinosaur named ‘Sue’ who is on display at a Chicago museum was found in 1990. Two years later, the FBI and National Guard seized the skeleton. The fight over that T-Rex is documented in the film 'Dinosaur 13.' John Berman spoke with Peter Larson, a paleontologist on the team that found ‘Sue,’ along with his ex-wife Kristen Donnan. Together they wrote a book about the experience.