Airman 1st Class Nathan Kankelfitz leads Staff Sgt. Garrett Rixs, both fire fighters in the 119th Civil Engineer Squadron, as they conduct a search for victims through a smoky hallway following a simulated enemy attack during a training exercise at the North Dakota Air National Guard Base, Fargo, N.D., June 8, 2019. They have been told there is smoke and possibly victims inside the facility for exercise purposes. The training is required periodically and is routine at Air National Guard bases throughout the United States. (U.S. Air National Guard photo by Chief Master Sgt. David H. Lipp)