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U.S. Marine Corps Pfc. Efrain Mancilla, a Marine with Marine Aircraft Group 12 chemical biological and nuclear defense, puts on a mission oriented protective posture suit to practice contamination control with his Airmen counter-parts in preparation for Vigilant Ace 17-1 at Osan Air Base, Korea, Nov. 17, 2016. Vigilant Ace is a biannual, bilateral training event that exercises U.S. military and Republic of Korea Air Force interoperability through simulated wartime tasking. (U.S. Marine Corps photo by Lance Cpl. Jacob A. Farbo)
161117-M-HD015-0012.JPG Photo By: Lance Cpl. Jacob Farbo

Nov 20, 2016
OSAN AIR FORCE BASE, South Korea - U.S. Marine Corps Pfc. Efrain Mancilla, a Marine with Marine Aircraft Group 12 chemical biological and nuclear defense, puts on a mission oriented protective posture suit to practice contamination control with his Airmen counter-parts in preparation for Vigilant Ace 17-1 at Osan Air Base, Korea, Nov. 17, 2016. Vigilant Ace is a biannual, bilateral training event that exercises U.S. military and Republic of Korea Air Force interoperability through simulated wartime tasking. (U.S. Marine Corps photo by Lance Cpl. Jacob A. Farbo)


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