U.S. Army Reserve Civil Affairs Officer for the 404th Civil Affairs Battalion, 352nd Civil Affairs Command, conducts perimeter security checks during a simulated medical training exercise in Camp Santiago training area, Salinas, Puerto Rico, Apr. 13, 2025. The 404 CA BN develops and maintains capable, combat-ready Civil Affairs units ready for mobilization and employment in large-scale combat operations (LSCO), security cooperation, crisis response, and contingency operations, in support of Army and Joint Force requirements. (U.S. Army Reserve photo by Staff Sgt. Tristan Peete)