U.S. Air Force Col. Christopher Callis, 509th Mission Support Group commander, U.S. Air Force Lt. Col. Anthony Nishimura, 509th Logistic Readiness Squadron outgoing commander and U.S. Air Force Maj. Joshua Anson, 509th Logistic Readiness Squadron commander assumes command during change of command ceremony with the official passing of the unit guidon at Whiteman Air Force Base, Missouri, June 14, 2021. The passing of the unit guidon signifies the transfer of responsibility and command for a unit from one commanding officer to another. (U.S. Air Force photo by Airman 1st Class Victoria Hommel)