WHITEMAN AIR FORCE BASE, Mo. -- -- The 509th Operations Support Squadron welcomes its new commander with an official change of command ceremony at Whiteman Air Force Base, Missouri, April 23, 2021. The change of command ceremony is a military tradition that formally signifies the transfer of responsibility for a unit from one commanding officer to another, symbolized through the passing of a guidon. (U.S. Air Force photo by Airman 1st Class Victoria Hommel)