Capital Airport Air National Guard Station is a 91-acre facility situated on land leased from the Springfield Airport Authority, located on the grounds of Abraham Lincoln Capital Airport. It serves as the home for the 183d Fighter Wing (183 FW), an Illinois Air National Guard unit operationally gained by the Air Combat Command (ACC), and also houses the State Headquarters, Illinois Air National Guard. Historically, the 183 FW operated as a fighter unit, comprising 321 full-time and 800 part-time military personnel, totaling 1,321 individuals. Pursuant to a Base Realignment and Closure (BRAC) decision in 2005, the 183 FW was directed to divest its fighter aircraft. In October 2008, the last of the 170th Fighter Squadron's fifteen F-16C/D Fighting Falcon aircraft departed Capital Airport AGS for redistribution to other Air National Guard fighter wings. The 183 FW remains active at Capital Airport AGS, currently without a flying mission, while the U.S. Air Force, Air Combat Command, and Air National Guard determine a new role and mission set for the wing. In addition to the 183 FW, the Illinois Air National Guard State Headquarters, Expeditionary Combat Support (ECS) elements of the 183 FW, the 217th Engineering Installation Squadron, and the F110 engine Centralized Intermediate Repair Facility (CIRF) also maintain their presence at the station.