U.S. Air Force Staff Sgt. Brandon Stone, military working dog handler assigned to the 379th Expeditionary Security Forces Squadron, braces for impact as military working dog, Cola, attempts to detain him during a K-9 demonstration exercise at Al Udeid Air Base, Qatar, Aug. 17, 2017. The exercise was held for members of the 379th Expeditionary Medical Group to demonstrate controlled aggression tactics used by the K-9 team when detaining suspects. (U.S. Air National Guard photo by Tech. Sgt. Bradly A. Schneider/Released)