Staff Sgt. Stephen Barber and Senior Airman Tim Dent low crawl through the combat endurance event July 28, 2011, during Air Mobility Rodeo 2011 at Joint Base Lewis-McChord, Wash. Barber and Dent are assigned to the 621st Contingency Response Wing. (U.S. Air Force photo/1st Lt. Brooke Brzozowske)