Chief Master Sgt. Elvin L. Young Jr., 374th Airlift Wing command chief, acts as guidon bearer during the 374th AW change of command, July 20, 2018, at Yokota Air Base, Japan. A change of command is a military tradition that represents a formal transfer of authority and responsibility for a unit from one commanding or flag officer to another. (U.S. Air Force photo by Airman 1st Class Juan Torres)