Senior Airman Joshua L. Coonich, 319th Medical Operations Squadron flight medicine medical technician, and Air Force Staff Sgt. Adam Stelmack, 319th Operations Support Squadron NCO in charge of airfield management operations, perform box jumps using tires as a platform April 18, 2015 on Grand Forks Air Force Base, N.D. Coonich and Stelmack are members of a group of Airmen dedicated to training for a Battlefield Airman career field. (U.S. Air Force photo by Airman 1st Class Ryan Sparks/released)
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