Airmen applaud Col. William Robertson, the commander of the 182nd Airlift Wing, Illinois Air National Guard, after his final C-130 Hercules 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)