U.S. Air Force Col. Robert Lankford, left, 62nd Operations Group commander, presents the 4th Airlift Squadron guidon to U.S. Air Force Lt. Col. Ellen Canup, incoming 4th AS commander, during a change of command ceremony at Joint Base Lewis-McChord, March 4, 2021. Canup is the 56th commander to lead the 4th AS, the oldest active airlift squadron in the Air Force, which was activated in 1935.