U.S. Air Force 1st Lt. Dave Earl, 633rd Contracting Squadron contracting specialist, participates in an event at the annual Squadron Fitness Challenge at Langley Air Force Base, Va., May 24, 2012. The Squadron Fitness Challenge consisted of seven events designed to test physical strength and build camaraderie among units. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)