Back to basics
U.S. Air Force Master Sgt. Christopher Krieger, 7th Medical Group first sergeant, participates in one of 32 obstacle courses March 24, 2012, at the Warren Dodson training complex in Abilene, Texas. The course was hosted by the Airman Advisory Council to boost morale while supporting physical fitness. (U.S. Air Force photo by Airman 1st Class Jonathan Stefanko/ Released)