U.S. Air Force Tech. Sgt. Boyd Kempher, 442d Maintenance Group Aerospace and Jet Engine Propulsion mechanic works on the centrifugal multi-switch, an integral piece to the jet engine dryer on Kansas Speedway on 2 May 2021. With unavailable help and the spare multiple states away, Kempher and Russell, both Reserve Airmen, were hand-selected to troubleshoot the speedway’s dryers in case of inclement weather.
18.0-140.0 mm f/3.5-5.6
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