U.S. Marine Corps Lance Cpl. Richard Chargualaf, a

U.S. Marine Corps Lance Cpl. Richard Chargualaf, a combat engineer with Logistics Combat Element, Marine Rotational Force - Darwin, provides security during a patrol and ambush exercise at Robertson Barracks, NT, Australia, July 14, 2020. Small arms defensive training teaches Marines physical positioning and movement during a potential ambush as well as patrolling techniques to comprise a lethal and competent expeditionary fighting force. (U.S. Marine Corps photo by Lance Cpl. Natalie Greenwood)