The fastest ocean liner ever built and the largest constructed on US soil, the SS United States was meant to be the last word in American shipbuilding. Retired only 17 years after her maiden voyage, she is one of the last of her kind. Now an enormous rusting relic moored in Philadelphia, time is running out to save this beautiful monument to another era of travel. Find out more about what lies in store for the SS United States in "Abandoned America: Dismantling the Dream".