U.S. Army Soldiers, with the 333rd Military Police Brigade, train on the Mk 19 40mm belt-fed automatic grenade launcher during a crew-served weapons range at Fort Dix, N.J., March 29, 2025. The Mk 19 is a belt-fed, blowback-operated, air cooled, crew-served, fully-automatic weapon that fires 40mm grenades.(U.S. Army Photo by Master Sgt. Justin P. Morelli)