Tech. Sgt. David, a 432nd Maintenance Group contract officer representative, performs shrugs while his training partners watch during a workout Dec. 4, 2015, at Nellis Air Force Base, Nevada. David has been training for six years to be a professional body builder and recently earned his professional status after taking second place overall at the 2015 National Physique Committee National Bodybuilding Championships on Nov. 21, 2015. (U.S. Air Force photo/Airman 1st Class Christian Clausen)