Staff Sgt. turns professional MMA fighter
Staff Sgt. David Helmbrecht, a Military Working Dog Trainer with the 319th Security Forces Squadron at Grand Forks Air Force Base, N.D., keeps his hands relaxed while demonstrating some of his Mixed Martial Arts punches. Sergeant Helmbrecht will make his professional debut May 8 in a MMA fight. (U.S. Air Force photo by Airman 1st Class Amber Price)