Cpl. Nicholas D. Ray, rifleman with Company G, 2nd Battalion, 24th Marine Regiment, 4th Marine Division, rappels down a tower during Peninsula Express 15-8 at the Mountain Warfare School in Pohang, Republic of Korea, June 30, 2015. At the school, Marines worked on their proficiencies in rappelling, fast roping and climbing in order to improve their ability to fight in mountainous environments. This is also the first time Marine Forces Reserve has participated in the Korean-Marine Exchange Program, a series of exercises between the U.S and Korean Marine Corps designed to build interoperability and tactical familiarity between partner nations.