190607-Z-WA217-1097
Tech. Sgt. Matthew Clark, a fire fighter in the 119th Civil Engineer Squadron, shouts instructions, as he leads a group responding to an emergency call after a simulated enemy attack during a training exercise at the North Dakota Air National Guard Base, Fargo, N.D., June 7, 2019. 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)