Chief Master Sgt. Leon Alexander, 908th Maintenance Squadron superintendent, gives the Chiefs Charge to Chief Master Sgt. Christopher Barnby during his installment as the 403rd Wing command chief at Keesler Air Force Base, Mississippi, May 3, 2014. Barnby is joined by all of the chiefs present during this ceremony. (U.S. Air Force photo/Master Sgt. Jessica Kendziorek)