U.S. Marines with Weapons Company, 2nd Battalion, 3rd Marine Regiment, temporarily assigned to the 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force, provide cover fire during platoon mechanized raid training at the Su Seong-Ri Range in South Korea March 26, 2014, during exercise Ssang Yong 14. Marine Expeditionary Force Exercise (MEFEX) 2014 was a U.S. Marine Corps Forces Pacific-sponsored series of exercises between the U.S. Navy and Marine Corps and South Korean forces. Among the exercises were the Korea Marine Exercise Program, Freedom Banner 14, Ssang Yong 14, Key Resolve 14 and the Combined Marine Component Command 14 command post exercise.