U.S. Marines with 2nd Bn., 1st Marines, hold live-fire ranges
U.S. Marines with Weapons Company, 2nd Battalion, 1st Marine Regiment, 1st Marine Division, fire an illumination round during an M252 81 mm mortar range as a part of Adversary Force Exercise 4-26 at Marine Corps Air-Ground Combat Center Twentynine Palms, California, Aug. 9, 2026. AFX serves as an opportunity for units to receive training and certification across multiple warfighting functions in realistic force-on-force scenarios. (U.S. Marine Corps photo by Sgt. Vincent Needham)