A Grand Forks Air Force Base airman lies in defense following an alarm sounding off May 22, 2019, during exercise Summer Viking 19-01 on the Air National Guard Base in Fargo, North Dakota. Alarms, simulated explosions and adversaries were all part of training for those who took part in the 4-day exercise which focused on practicing deployed readiness. (U.S. Air Force photo by Senior Airman Elora J. Martinez)