The wing population consists of more than 4,800 military and civilian members and about 5,200 family members. The wing is home to three fighter squadrons: the 389th Fighter Squadron, 391st Fighter Squadron and a Republic of Singapore 428th Fighter Squadron. The wing has the firepower of more than 50 F-15E Strike Eagle aircraft and 12 Republic of Singapore Air Force F-15SG aircraft. The 726th Air Control Squadron detachment assigned here gives an air picture to the aircraft as they train. An active Air National Guard unit, the 266th Range Squadron, controls and maintains emitter sites within the 7,412-square mile operational training range located in southern Idaho.
Additionally, the 390th Electronic Combat Squadron, located at Naval Air Station Whidbey Island, Wash., is assigned to the 366th Fighter Wing. The squadron is responsible for suppression of enemy air defenses in support of expeditionary aircraft and ground troops by disrupting enemy electronic activity and obtaining tactical electronic intelligence.