621st ACS Change of Command
The Osan honor guard posts the colors during the 621st Air Control Squadron change of command ceremony at Osan Air Base, Republic of Korea, May 17, 2021. The change of command ceremony is deeply rooted in military tradition that dates back to the reign of King Frederick of Prussia and has persisted into modern day. (U.S. Air Force photo by Staff Sgt. Douglas Lorance)

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Photo by: Staff Sgt. Douglas Lorance |  VIRIN: 210517-F-QC626-1019.JPG