British Army Spr. Nathan Castle (right), commando with 131 Commando Squadron Royal Engineers, British Army, uses a circular saw to cut a piece of plywood while U.S. Marine Cpl. Junior G. Moncayo (left), heavy equipment mechanic with Bridge Company B, 6th Engineer Support Battalion, 4th Marine Logistics Group, holds the wood in place at a construction site during exercise Red Dagger at Fort Indiantown Gap, Pa., May 21, 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)