U.S. Marine Corps Cpl. Jahmir Harris, an administrative specialist with Headquarters Battalion, Marine Forces Reserve, provides security during the Corporals Course 4-25 field exercise, Naval Air Station-Joint Reserve Base New Orleans, Belle Chasse, Louisiana, Sept. 26, 2025. The field exercise tested the Marines’ leadership, decision making, and small unit tactics in a simulated environment. (U.S. Marine Corps photo by Cpl. Kanoa Thomas)