Soldiers assigned to the U.S. Army Caisson Detachment, 3d U.S. Infantry Regiment “The Old Guard” conduct routine training near the Iwo Jima Memorial in Arlington, Va., on July 11, 2024. The training was led by contracted sustainment trainers, Christine Tribbling, a former riding instructor with the Royal Canadian Mounted Police, and Martin Kohnen, a former Sergeant Major in the Royal Canadian Mounted Police. (U.S. Army photo by Sgt. Samantha Cate)