181204-M-UH172-2073
U.S. Marine Corps Sgt. Christian Gomezluna, a field artillery cannoneer with India Battery, 3rd Battalion, 11th Marine Regiment, 1st Marine Division, adjusts a M777 Howitzer, during exercise Steel Knight (SK) 2019 at Marine Corps Air Ground Combat Center, Twentynine Palms, California, Dec. 4, 2018. SK is an annual exercise used to enhance the Marines' and Sailors' skills, tactics, and combat readiness by performing in various dynamic scenarios, ground combat maneuver operations, and live fire ranges. (U.S. Marine Corps photo by Lance Cpl. Roxanna Gonzalez)