It's a showdown between two of the world's most dangerous desert hunters. A red-tailed hawk, one of the largest hawk species in the world, has its eyes on a western diamondback rattlesnake. The hawk brings to the fight a five-foot (one-and-a-half-meter) wingspan and a surprising tactic for subduing snakes. But the rattler packs a venomous bite that can kill an animal many times its size. Who will win this battle of the predators?