Airmen with the 182nd Airlift Wing, Illinois Air National Guard, stand in formation to congratulate wing commander Col. William Robertson during his final flight in Peoria, Ill., Oct. 31, 2017. Robertson commanded the wing for 13 years before his promotion to brigadier general and appointment to the role of chief of staff of the Illinois Air National Guard in November 2017. (U.S. Air National Guard photo by Tech. Sgt. Lealan Buehrer)