HM3 Ryan Loomis, a hospital corpsman with 4th Law Enforcement Battalion, Force Headquarters Group, Marine Forces Reserve, applies a tourniquet to a simulated casualty during exercise Platinum Wolf 2016 at Peacekeeping Operations Training Center South Base, Bujanovac, Serbia, May 19, 2016. The Marines are working with partner nations of Bosnia, Bulgaria, Macedonia, Montenegro, Slovenia and Serbia during the final field exercise where they master patrols, military operation urban terrain training, and building their interoperability.