Col. Trevor Flint, 90th Maintenance Group commander, passes the 90th Operations Squadron guidon to Maj. Jacqueline Sartori as she assumes command of the squadron during a change-of-command ceremony in the 90th MXG high-bay maintenance hangar on F.E. Warren Air Force Base, Wyo., June 2, 2014. Master Sgt. Christopher Stokes, 90th MOS first sergeant, stands by to take the guidon back from Sartori. (U.S. Air Force photo by R.J. Oriez)