Staff Sgt. Brian Davis, 319th Civil Engineer Squadron unit deployment manager, runs the final heat in the ultimate relay event at the annual Winter Bash Feb. 20, 2014, on Grand Forks Air Force Base, N.D. The ultimate relay is one of several events units at Grand Forks AFB competed in. Winter Bash, like its counterpart, Summer Bash, is an opportunity for Airmen to take a break from day-to-day tasks in order to boost morale, unit cohesion and esprit de corps. (U.S. Air Force photo/Staff Sgt. Andrew J. Helmkamp)
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