Invocation
From left to right, U.S. Air Force Col. Billy Thompson, 23d Wing commander, Col. Mark Ruse, outgoing 23d Mission Support Group commander, and Col. Edward Ford, incoming 23d MSG commander, bow their heads during a change of command ceremony invocation at Moody Air Force Base, Ga., June 15, 2012. A change of command is a military tradition where outgoing commanders relinquish command and incoming commanders take charge of the unit. (U.S. Air Force photo by Staff Sgt. Stephanie Mancha/Released)