U.S. Soldiers assigned to the 201st Battlefield Surveillance Brigade 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 photo by 1st Lt. Filiberto Martinez/Released)