U.S. Marine Maj. Bryon DeCastro, 7th AF Marine liaison, attempts to pull away from Aris, 51st Security Forces Squadron military working dog, during a K-9 demonstration at Osan Air Base, Republic of Korea, Sept. 8, 2014. Leadership from across Team Osan participated in the annual Mustang Immersion to develop a better understanding of what Osan Airmen are able to bring to the fight. (U.S. Air Force photo by Capt. Robert Howard/Released)

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