U.S. Army Maj. Jon E. Toyne, current operations chief, 181st Infantry Brigade, First Army, speaks on the brigade’s involvement during Operational Sentinel Justice (OSJ) at Camp Shelby, Miss., from 4-21 June, 2026. OSJ is a large-scale U.S. Army Reserve training exercise that enhances Soldier and unit readiness, validates capabilities, and improves mission effectiveness through realistic, multi-echelon training in a dynamic operational environment. (U.S. Army video by Staff Sgt. Avery Cunningham)
