LANGLEY AIR FORCE BASE, Va. -- Col. Donald Kirkland (left), 633d Air Base Wing commander, presents the 633d Mission Support Group unit guidon to Col. Kenneth J. D’Alfonso, new 633d MSG commander, during the 633 MSG change of command ceremony July 1 at the 71st Fighter Squadron hangar. Colonel D'Alfonso, a graduate of the U.S. Air Force Academy, recently attended the Army War College. (U.S. Air Force photo/Senior Airman Dana Hill)