British Army Lt. Col. J.M. Senior, left, the commanding officer of the Light Dragoons, talks with U.S. Army Capt. Ryan Yaun, a trainer at the Joint Multinational Readiness Center, during a computer-simulated multinational exercise as part of Immediate Response 2014 in Postojna, Slovenia, Aug. 27, 2014. 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.