U.S. Marines with Weapons Platoon, 2nd Battalion 8th Marines fire High Explosive 81 mm mortars during a Tactical Air Control Party (TACP) course of live fire for the Expeditionary Warfare Training Group, Atlantic aboard Camp Lejeune, N.C., June 24, 2014. TACP course incorporates the concepts and principles used in implementing air power in support of Marine Air-Ground Task Force or Joint Task Force operations. (U.S. Marine Corps photo by Cpl. Michael Oxton, Combat Camera, MCI-East, Camp Lejeune/Released)