U.S. Marine Corps Sergeant Austin Deitsch with 1st

U.S. Marine Corps Sergeant Austin Deitsch with 1st Platoon, Fox Company, 2nd Battalion, 24th Marines, 23rd Marine Regiment, 4th Marine Division, Marine Forces Reserve, gives a quick overview on the operation of a M27 Infantry Automatic Rifle to a Republic of Korea (ROK) Marine with 5th Company, 2nd Battalion, 7th Marine Regiment, 1st ROK Marine Division, before conducting small-arms live-fire marksmanship table five at the Seusong-Ri multi-purpose range near Pohang, South Korea, as a part of Korean Marine Exchange Program 15-8 and Peninsula Express 15, July 5th, 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)