Authorities were warned that gunman was planning to attack Yellowstone facility on July 4th

Authorities were warned ahead of time about a planned mass shooting at a Yellowstone National Park employee dining hall before a gunman opened fire, injuring one ranger. The shooter, Samson Lucas Bariah Fussner, was killed by rangers after he opened fire with a semiautomatic rifle. Body camera footage shows the chaotic scene during and after the shootout. Fussner was armed with a semiautomatic pistol as well. The ranger injured in the incident was treated at a hospital and released. The incident remains under investigation by the FBI, and not all details have been released. Shootings are rare in Yellowstone despite the high rate of gun ownership in the region.