Zach Barnes, a Tinker Fire and Emergency Services driver/operator, detaches two segments of hose after a training exercise at Tinker Air Force Base, Oklahoma, Oct. 6, 2021. Tinker Fire and Emergency Services recently received the International Organization for Standardization's Class 1 Certification, which is given to fire departments that meet the highest standards on water supply, communications, training, operations and prevention. (U.S. Air Force photo by Paul Shirk)
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