Air Force Reservist Col. Melvin "Sonny" Giddings, 940th Maintenance Group commander, accepts the Aircraft Maintenance Squadron flag from the outgoing squadron commander, Lt. Col. Gregory Steuer, while Lt. Col. Robert Dunn waits to take the flag and command of the unit during a ceremony Jan. 7, 2007 at Beale Air Force Base, Calif. Colonel Steuer is leaving the unit for a promotion with Fourth Air Force at March Air Reserve Base, Calif. (U.S. Air Force photo/Master Sgt. Ellen Hatfield Wilt)