Soldiers and Airmen with the Hawaii National Guard fire simulated weapons at the Infantry Gunnery and Tactical Simulator during exercise Tiger Balm 13 at Pasir Laba Camp, Singapore, July 16, 2013. Tiger Balm is a bilateral exercise between U.S. Army Pacific and the Singapore Armed Forces designed to enhance interoperability between the two nations. (U.S. Army National Guard photo by Spc. Tyler Meister/Released)