An agitated bull bison barrels through a Yellowstone campground and sends a visitor flipping through the air in a terrifying attack caught on camera. Witnesses say the man and his grandson were keeping their distance when the animal suddenly targeted them after charging a group of children just moments before. Bystanders ran toward the bison to distract it after the man hit the ground, fearing the animal would attack again as emergency crews rushed to the scene. The victim reportedly suffered se