Airman 1st Class Tyler Sprinkle, a 28th Operations Squadron air traffic controller apprentice, amends altitudes on Ellsworth Air Force Base, S.D., July 20, 2021. Sprinkle participated in day one of Combat Raider 21, an exercise that proves the effectiveness of the United States military’s ability to work together and accomplish large-scale operations. (U.S. Air Force photo by Airman 1st Class Quentin K. Marx)