U.S. Air Force Senior Airman Matthew Cook, a 6th Civil Engineer firefighter, checks the atmospheric pressure of a manhole during a mandated civil engineer squadron safety stand-down day at MacDill Air Force Base, Fla., May 28, 2019. Key members from the 6th Air Mobility Wing Safety office, 6th Communications Squadron, Airmen from the 6th CES, and various others, partnered up to train on local confined space entry protocol and underlying safety concerns within each squadron to ensure the most effective training is provided should any emergency arise in a confined space. (U.S. Air Force Photo by Senior Airman Ashley Perdue)
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