Lee Greenwood and the song that defined a nation

Host Tim Boyum travels to Tennessee to meet up with Lee Greenwood. As America celebrates 250 years, Greenwood tells us the incredible story behind his hit, "God Bless the USA." From the inception on the tour bus to the stage with Ronald Reagan to an emotional story of singing it after 9/11, the song has defined his career. What you don't know is that the song almost never made it. A limousine trip…