U.S. Marine Lance Cpl. Joshua D. Southern, combat engineer

U.S. Marine Lance Cpl. Joshua D. Southern, combat engineer with Bridge Company Charlie, 6th Engineer Support Battalion, 4th Marine Logistics Group, Marine Forces Reserve, and British army 1st Lt. Andrew Wiltshire, British commando with 131 Commando Squadron Royal Engineers, British army, fire in the prone position during a live fire range of tables five and six during exercise Red Dagger at Fort Indiantown Gap, Pa., May 14, 2018. Exercise Red Dagger is a bilateral training exercise that gives Marines an opportunity to exchange tactics, techniques and procedures as well as build working relationships with their British counterparts. (U.S. Marine Corps photo by Sgt. Melanie Wolf/Released)