The 1956 collision of the Andrea Doria and the Stockholm triggered a night of sheer terror for the Andrea Doria's 1,706 passengers and crew and set in motion one of history's most dramatic rescues at sea. From the moment the Andrea Doria settled on the sea floor in 240 feet of water, skilled sport divers have risked their lives to simply touch the "Mount Everest of wreck diving." Not all returned alive. Peter Hunt crewed on five Andrea Doria expeditions...