 Footage from Tim Benavidez's lapel camera showed him securing the gun and dealing with the film's armorer, Hannah Gutierrez-Reed, who was upset. The trial is expected to last nine days. Yellowstone National Park officials say a gunman killed by park rangers as he fired a semi-automatic rifle at the entrance of a dining facility with 200 people inside had planned to carry out a mass shooting. 28-year-old Samson Lucas Beria-Fussner