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Alaska Air National Guard Tech. Sgt. Michael Hazen (second from right), a 176th Civil Engineer Squadron engineer journeyman, grades 176th CES structural specialists Oct. 24, 2021, during task qualification training under simulated chemical, biological, radiological, and nuclear conditions at Joint Base Elmendorf-Richardson. Headquarters Air Force requires the squadron to complete 224 tasks under CBRN conditions across the squadron's career fields.