Marines with 4th Law Enforcement Battalion, Force Headquarters Group, Marine Forces Reserve, practice the counter to an overhand grab during exercise Platinum Wolf 2016 at Peacekeeping Training Operations Center South Base in Bujanovac, Serbia, May 10, 2016. The Marines join six other partner nations including Bosnia, Bulgaria, Macedonia, Montenegro, Slovenia and Serbia to conduct peacekeeping operations and non-lethal weapons training, and also take advantage of the extra time during the annual training to advance in the Marine Corps Martial Arts Program. (U.S. Marine Corps photo by Sgt. Sara Graham)