U.S. Army Capt. Geoffrey Lynch, right, the headquarters commander with the 2nd Cavalry Regiment, discusses operations and tactics with Montenegrin army Lt. Ratko Cosovic after a field training exercise during the Immediate Response 2012 training event in Slunj, Croatia, June 5, 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)