U.S. Navy Petty Officer 2nd Class Andrew Baldwin demonstrates firing a .50-caliber machine gun to members of the Thai navy's Riverine Patrol Regiment during Cooperation Afloat Readiness and Training Thailand 2015 in Sattahip, Thailand, Aug. 27, 2015. In its 21st year, the exercise includes the U.S. Navy, U.S. Marine Corps and the armed forces of nine partner nations. U.S. Navy photo by Petty Officer 1st Class Joshua Scott