U.S. Army Col. Daniel E. Soller, commander of the 201st Battlefield Surveillance Brigade, asks soldiers of 23rd Singapore Infantry Brigade about their Terrex Armoured Personnel Carrier 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)