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U.S. Air Force Master Sgt. Scott Roy, left, Air Force Installation and Mission Support Center, Detachment 3 non-commissioned officer-in-charge of current operations, instructs a course on baton use in a stressful environment to a group of 20 Philippine Air Force airmen from the 600th Air Base Group at Clark Air Base, Philippines, May 10, 2018. Roy, a native of New Bedford, Massachusetts, is in the Philippines participating in Exercise Balikatan. Exercise Balikatan, in its 34th iteration, is an annual U.S.-Philippine military training exercise focused on a variety of missions, including humanitarian assistance and disaster relief, counterterrorism, and other combined military operations held from May 7 to May 18.