A U.S. Marine with 1st Platoon, Fox Company, 2nd Battalion, 24th Marines, 23rd Marine Regiment, 4th Marine Division (MARDIV), Marine Forces Reserve posts security during a patrol during the Military Operations in Urban Terrain (MOUT) and patrolling portion of Korean Marine Exchange Program 15-8 in Pohang, South Korea as a part of Peninsula Express 15, July 3rd, 2015. Peninsula Express is one in a series of regularly-scheduled combined, small-unit, tactical training exercises that demonstrates continued dedication to the ROK-U.S. relationship, contributing to the security and stability of the Korean Peninsula and Asia-Pacific region. (U.S. Marine Corps photo by Sgt. Justin A. Bopp/Released)