Maj. David Burnett, 28th Force Support Squadron commander, leaps off a wooden obstacle during the Commando Challenge 5k obstacle course at the Buffalo Chip Campground near Sturgis, S.D., July 7, 2012. The Commando Challenge, open to all military members and their families, was designed to test the competitor’s strength and endurance. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)