U.S. Air Force Maj. Gen. Mark Weatherington, Eighth Air Force and Joint-Global Strike Operations Center commander, thanks Col. Jeffrey Schreiner, former 509th Bomb Wing commander, for his service and welcomes Col. Daniel Diehl, in-coming 509th BW commander, during the 509th BW change of command ceremony, Whiteman Air Force Base, Missouri, June 16, 2021. Military change-of-commands are a time-honored tradition that formally symbolizes the continuity of authority as the command passes from one individual to another. The transfer of command is physically represented by handing the command flag, the tangible symbol of the unit, from the outgoing commander to the new. (U.S. Air Force photo by Airman First Class Victoria Hommel)