Marines with F Battery, Battalion Landing Team 3/8, 26th Marine Expeditionary Unit, watch as a British Commando, Royal Artillery, fires a 120 mm mortar during the Supporting Arms Coordination Exercise at Camp Lejeune, N.C., July 10, 2010. The live-fire exercise was designed to test communications and fire support coordination capabilities, while also building partnerships with foreign military members as part of "Operation Auriga '10", a bilateral exercise with the United Kingdom.