Maj. Gen. Michael Lutton, 20th Air Force commander, passes the guidon to Col. Catherine Barrington, 90th Missile Wing commander, during the 90 MW change of command ceremony June 28, 2021, F.E. Warren Air Force Base, Wyoming. The ceremony signified the transition of command from Col. Peter Bonetti to Col. Catherine Barrington. (U.S. Air Force photo by Airman 1st Class Anthony Munoz)