U.S. Marine Lance Cpl. Luis A. Eufraciodolores (right), administrative clerk with Headquarters and Service Company, 6th Engineer Support Battalion, 4th Marine Logistics Group, uses a drill to screw in a door frame as Lance Cpl. Jason P. McWhinnie (left), field radio operator with Engineer Support Company, 6th ESB, 4th MLG, helps hold the frame 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)