The U.S. Air Force Honor Guard practices on Aug. 9, 2012, for the Air Force Chief of Staff transition ceremony. During the ceremony, Gen. Norton Schwartz will retire from active duty and pass on the duty of Air Force Chief of Staff to Gen. Mark A. Welsh III. The transition ceremony will begin at 10:30 a.m. on Aug. 10 in Hangar 3 on Joint Base Andrews, Md. (U.S. Air Force Photo/ Senior Airman Perry Aston)