A Air Force CV-22 Osprey crew chief assigned to the 352d Special Operations Maintenance Group performs pre-flight procedures for an Ability to Survive and Operate exercise at RAF Mildenhall, England, Dec. 13, 2017. The ATSO and chemical, biological, radiological and nuclear exercise prepares Airmen for chemical warfare defenses. ( Air Force

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Photo credit: © RP Library / Alamy / Afripics
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Keywords: 352, america, armed, cbrn, chief, crew, defence, employee, federal, forces, government, group, maintainer, maintenance, mildenhall, military, operations, raf, service, special, states, united, usa