True Grit

Bear Grylls knows what it takes to survive. But he's not the first.Take the American bombardier Louis Zamperini, who survived 47 days stranded at sea by catching and killing hungry sharks and drinking the warm blood of albatrosses ? only to be captured by the Japanese and horrifically tortured for years in their most brutal POW camps...Or Marcus Luttrell, a Navy SEAL who single-handedly ...