The 3rd U.S. Infantry Regiment (The Old Guard) Fife and Drum Corps performs a Sound Off during the U.S. Army Air Operations Group’s change of command Aug. 16, 2012. During the ceremony, Col. William D. McGarrity took command of the U.S. Army Air Operations Group from Col. Scott E. Sanborn. The U.S. Army Air Operations Group is headquartered at Fort McNair in Washington, D.C. (U.S. Air Force photo/Senior Airman Lindsey A. Porter)