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Col. Jeffrey Wilkinson (left), commander of the Kentucky Air National Guard’s 123rd Airlift Wing, presents a Meritorious Service Medal to Chief Master Sgt. David Selby during Selby’s retirement ceremony at the Kentucky Air National Guard Base in Louisville, Ky., May 19, 2018. Selby, the 123rd Mission Support Group superintendent, served for 39 years in the Kentucky Air National Guard. (U.S. Air National Guard photo by Master Sgt. Vicky Spesard)