U.S. Marine Sgt. John R. Sheets, range coach with Inspector

U.S. Marine Sgt. John R. Sheets, range coach with Inspector Instructor Staff, Engineer Support Company, 6th Engineer Support Battalion, 4th Marine Logistics Group, coaches the firing line of Marines with 6th ESB, 4th MLG and British commandos with 131 Commando Squadron Royal Engineers, British Army, as they shoot tables five and six at the night range 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 courtesy photo by Petty Officer 1st Class Jered Spieker/Released)