Staff Sgt. Keith Bell, 932nd Civil Engineer Squadron, heating, ventilation, and air conditioning craftsman removes screws holding the heating exchanger of a heating boiler, February 5, 2021, inside building 3651, the 932nd Medical Group building, Scott Air Force Base, Illinois. The boiler requires annual maintenance, and the CES HVAC Airman were able to perform the maintenance to maintain their own readiness and support operations here at SAFB.

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Photo credit: © Operation 2021 / Alamy / Afripics
License: Licensed
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