Bullet points of Authorities warned that gunman was planning to attack Yellowstone facility

Bullet points of Authorities warned that gunman was planning to attack Yellowstone facility
- Authorities had been warned of the planned attack hours before the shooting.
- Fussner was killed by rangers stationed to protect the facility at Canyon Village.
- The shooting occurred on July 4 and was captured on body-worn camera footage.
- Fussner was armed with a semiautomatic rifle and pistol.
- The incident remains under investigation by the FBI.