Montenegrin army Sgt. Radomir Drobac takes position to wait for the opposing force in an ambush exercise as part of the Immediate Response 2012 training event in Slunj, Croatia, June 1, 2012.
Immediate Response is a U.S. Army Europe-led combined joint tactical field training exercise designed to build interoperability between NATO, Croatia and its regional partner nations. (DoD photo by Spc. Lorenzo Ware, U.S. Army/Released). Original public domain image from Flickr