U.S. Marine Corps Staff Sergeant David Murphy with

U.S. Marine Corps Staff Sergeant David Murphy with 2nd Platoon, Fox Company, 2nd Battalion, 24th Marines, 23rd Marine Regiment, 4th Marine Division, Marine Forces Reserve calls commands on the firing line while conducting a small arms live fire range during Korean Marine Exchange Program 15-8 at the Seusong-Ri Multi-purpose Range near Pohang, South Korea as a part of Peninsula Express 15, July 5, 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)