A U.S. Army 173rd Airborne Brigade soldier helps provide radio communications for a Slovenian partner at the end of Immediate Response 15 in Slunj, Croatia, Sept. 14, 2015. Immediate Response 15 is a multinational, brigade-level, command post exercise utilizing computer-assisted simulations and field training exercises in Croatia and Slovenia. U.S. Army photo by Sgt. 1st Class Caleb Barrieau