'A Capitol Fourth's' broadcast reflects the new Americana: A reality TV parade of stars

It's our most American holiday, so it's only natural that we want to see our most American stars -- the ones we voted for on television. No, it's not just your imagination: A steady stream of reality TV contestants have infiltrated the ranks of talent appearing in the annual PBS fireworks show "A Capitol Fourth," a three-decade-old tradition that plays out on the West Lawn of the U.S. Capitol and is broadcast across the country.