The thunderous roar of exploding depth charges was a familiar and comforting sound to the crew members of the USS Barb, who frequently found themselves somewhere between enemy fire and Davy Jones's locker. Under the leadership of her fearless skipper, Captain Gene Fluckey, the Barb sank the greatest tonnage of any American sub in World War II. At the same time, the Barb did far more than merely sink ships - she changed forever the way submarines stalk and kill their prey.