Teamwork
U.S. Air Force Col. Paul Walski, 93d Air Ground Operations Wing vice commander, assists Senior Master Sgt. Johnny Gavin, 824th Base Defense Squadron operations superintendent, in standard Air Force sit-ups during “Sergeant Rock” physical training at Moody Air Force Base, Ga., March 16, 2012. The 820th Base Defense Group celebrated its 15th anniversary by doing a physical training session, which includes push-ups, sit-ups and a 5k run. (U.S. Air Force photo by Airman 1st Class Olivia Dominique/Released)