Division, 8 February 1958 – 1 February 1963 4411th Combat Crew Training Group, 8 April 1959 – 15 June 1969 4416th Test Squadron, 15 June 1963 – 1 May 1970 682nd Air Support Operations Squadron, 1 December 1971 – 15 June 2011 Role and operations Today the 20th Fighter Wing remains at Shaw. As the host wing, it also retains the responsibility for providing facilities, personnel and material for the base's operation. Major components of the 20 FW are: 20th Operations Group (20 OG) (Tail Code "SW") The 20th Operations Group employs approximately 80 F-16CJ fighter aircraft in conventional and anti-radiation suppression of enemy air defenses (SEAD), strategic attack, counter-air, air interdiction, joint maritime operations and combat search-and-rescue missions. 20th Maintenance Group The 20th Maintenance Group includes the 20th Aircraft Maintenance Squadron, the 20th Component Maintenance Squadron, the 20th Equipment Maintenance Squadron and the 20th Maintenance Operations Squadron. 20th Mission Support Group The 20th Mission Support Group supports more than 5,400 military and civilian employees and 11,000 family members. The 20 MSG is also responsible for thousands of acres of land, including the outdoor recreation area located northwest on Lake Wateree, and the approximately Poinsett Electronic Combat Range located about southwest of the base. 20th Medical Group The 20th Medical Group provide ambulatory medical and dental services to the 20th Fighter Wing, Headquarters 9th Air Force and associate units. It is an outpatient clinic with 24-hour 911 Emergency Medical Services (EMS), advanced life support (ALS) ambulance response and transport capability for base personnel and flight line operations. Tenant units located on Shaw AFB are: Headquarters Ninth Air Force (9 AF) United States Air Forces Central (USAFCENT), the air component of United States Central Command (arrived 20 August 1954). Detachment 1, 609th Air and Space Operations Center (609 AOC) United States Army Central (USARCENT), the United States Army Component of United States Central Command. Substantial military contracting occurs through Shaw AFB. In fiscal year 2020, for example, the following corporate activities occurred at the Air Force Base: Abacus Technology Corp. information technology sustainment. CAE USA aircrew training and courseware development for F-15E, F-16, and F-22A aircraft. CACI information technology at the Network Operations and Security Center (NOSC) on Shaw AFB, with a focus on Central Command. Kapsuun Group LLC support services for A4/A6 staff. SAIC infrastructure engineering and technical modeling support, weapon system mission data analysis, and precision fires manager engineering