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Staff Sgt. Kelby Mier, 7th Logistics Readiness Squadron, Hazmat Tech Specialist course instructor, goes through a presentation Oct. 27, 2011, at Dyess Air Force Base, Texas. The course is designed to give training and authorization to individuals to sign-off for hazardous materials. (U.S. Air Force photo by Airman 1st Class Cierra Bullock/Released)

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Staff Sgt. Kelby Mier, 7th Logistics Readiness Squadron, Hazmat Tech Specialist instructor, assists Mr. Brian Claassen, 317th Maintenance Squadron, during a course Oct. 27, 2011, at Dyess Air Force Base, Texas. Each individual is hand selected from their shop to take the course in order to gain authorization to sign-off on hazardous materials. (U.S. Air Force photo by Airman 1st Class Cierra Bullock/Released)

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Staff Sgt. Kelby Mier, 7th Logistics Readiness Squadron, Hazmat Tech specialist instructor, prepares notes for the class Oct.27, 2011, at Dyess Air Force Base, Texas. The course is designed for individuals who are hand selected from their squadron to gain authorization to sign-off on hazardous materials. (U.S. Air Force Photo by Airman 1st Class Cierra Bullock/ Released)