U.S. Air Force Senior Master Sgt. John Butler, right, an operations superintendent with the 264th Combat Communications Squadron, Illinois Air National Guard, receives retirement documents from 264th commander Lt. Col. R. Thomas Nieukirk in Peoria, Ill, Aug. 9, 2020. Butler retired after 40 years of military service. (U.S. Air National Guard photo by Senior Airman Jay Grabiec)