A U.S. Soldier assigned to the 201st Battlefield Surveillance Brigade fires simulated weapons with guidance from a 23rd Singapore Infantry Brigade soldier 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)