Marine Corps Efrain Mancilla, a Marine with Marine Aircraft Group 12 chemical, biological and nuclear defense, assists Air Force Airman Daria Huckabone in taking off her mission oriented protective posture suit during a contamination control area simulation 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 military and Republic of Korea Air Force interoperability through simulated wartime tasking. ( Marine Corps photo by Lance Cpl. Jacob A. Farbo)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: 17-1, ace, bilateral, cbrn, mag-12, mwss-171, osan, training, vigilant