Airmen don mission oriented protective posture [MOPP] gear at Grissom Air Reserve Base, Ind., Oct. 14, 2017. Over 200 Airmen received hands-on chemical, biological, radiological and nuclear defense [CBRNE] training, as part of a new directive from the Department of Defense that requires certain unit type codes to receive training every 18 months. ( Air Force photo/Staff Sgt. Katrina Heikkinen)

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Keywords: 434, 434arw, 434th, air, arb, arw, base, cbrne, grissom, refueling, reserve, wing