Col. Matthew Quenichet, left, commander of the 123rd Airlift Wing, presents Col. Hans Otto, outgoing commander of the 123rd Medical Group, with a Certificate of Retirement during a ceremony at the Kentucky Air National Guard Base in Louisville, Ky., Dec. 15, 2024. Otto’s career spanned 27 years across multiple assignments in the active-duty Air Force, Air Force Reserve and Air National Guard. (U.S. Air National Guard photo by Tech. Sgt. Chloe Ochs)