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A crew chief from the 127th Aircraft Maintenance Squadron wears hearing protection and a reflective belt as he performs a visual inspection of an A-10 Thunderbolt II aircraft during pre-flight operations at Selfridge Air National Guard Base, Mich., March 21, 2012. Depending on their work environment, Airmen utilize a variety of safety devices, such as the hearing protectors and belt, to minimize accidents not only around military aircraft but in all working conditions. (U.S. Air Force photo by MSgt. Terry Atwell)
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