U.S. Army Lt. Col. James Barros, chief of operations for the Hawaii Army National Guard, explains Hawaiian culture to participants of the Tiger Balm 13 exercise during a professional culture exchange at Camp Pasir Laba, 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)