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Combat engineers assigned to Sapper Company, 6th Brigade Engineer Battalion (Airborne), 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, utilize a controlled detonation to breach a simulated enemy position during live-fire training on the Infantry Squad Battle Course at Joint Base Elmendorf-Richardson, Alaska, Aug. 12, 2020. The Soldiers focused on honing core ground combat skills such as fire team movement, communication, breaching and destroying simulated enemy positions by assault and maneuver.