For "Fast and the Furious" actor Paul Walker, going up against a great white shark -- in a 25-foot inflatable boat -- is no Hollywood stunt. With Walker in tow, the crew heads after the ultimate prize: a massive female. But when the support boat blows an engine, the team must hop into the inflatable -- essentially a motorized balloon not quite twice as long as the shark they hope to capture. Light is fading fast and it's a grueling battle to get this great white back to the mother ship.
