Col. John Wood passes the 437th Maintenance Group guideon to Col. James Clavenna at Nose Dock 2 on Joint Base Charleston, S.C., during the the 437 MXG change of command ceremony Aug. 12, 2010. Command of the group was relinquished from Col. Tammy Livingood, who took command in June 2007 and retired from active military service. Colonel Clavenna comes to Charleston after his previous assignment with the Air Force Fellows Program at the George C. Marshall European Center for Security Studies, Garmisch, Germany. Colonel Wood is the 437th Airlift Wing commander. (U.S. Air Force photo/Senior Airman Nicole Mickle)