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Staff Sgt. Matthew Sulack, left, 61st Aircraft Maintenance Unit crew chief, engages in a pugil stick match with Matthew Corcoran, 56th Force Support Squadron CrossFit group instructor, during a military combative training course taught by U.S. Marine Corp. Staff Sgt. Gardy Sylvain April 6 at Luke AFB, Ariz. The course began April 1 and will conclude April 23. (U.S. Air Force photo/Airman 1st Class Ronifel Yasay)
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