U.S. Marine supporting Marine Expeditionary Force Exercise (MEFEX) 2014 struggles with mud to commute from work at 1st Republic of Korea (ROK) Marine Corps Base, Pohang, South Korea, March 14, 2014. MEFEX will enhance the interoperability between the U.S. Marine air-ground task force and ROK Marine task force while holding amphibious capabilities of each nation's Navy and Marine Corps. (U.S. Marine Corps Photo by Lance Cpl. Andrew M. Blanco, III MEF Combat Camera/Released)