325th MSG changes command Published Aug. 2, 2013 325th Fighter Wing Public Affairs TYNDALL AIR FORCE BASE, Fla. -- Col. Christopher Holmes assumed command of the 325th Mission Support Group during a change of command ceremony Aug. 2 in Hangar 1. Colonel Holmes replaces Col. William Grund, who departs Tyndall to be the Director of Plans and Requirements and Communications for 24th Air Force, San Antonio, Texas. Colonel Holmes is a recent graduate from the Dwight D. Eisenhower School for National Security and Resource Strategy, National Defense University, Ft McNair, Washington DC.