Staff Sgt. Casey Crump, 916th Aerospace Medicine Squadron, participates in an exercise during the June Unit Training Assembly at Seymour Johnson Air Force Base. Crump has been in bioenvironmental engineering for eight years and part of his career includes recording readings from a Wet Bulb Globe Temperature. The WBGT is an instrument used to determine relative humidity and outside temperatures. ( Air Force photo by Tech. Sgt. Terrica Y. Jones)

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