452nd Maintenance Group: Assumptions of Command, Change of Command ceremonies Published Aug. 11, 2009 By Staff Sgt. Angel Gallardo 4th CTCS MARCH AIR RESERVE BASE, CALIF. -- 452nd Maintenance Group: Assumptions of Command, Change of Command ceremonies July 25, 2009. The new commanders are: Lt. Col. Mark S. Baker 452nd Maintenance Squadron Major Kevin M. Davis 452nd Aircraft Maintenance Squadron Major William T. Kelley 452nd Maintenance Operations Squadron