Cold War

In late May 1947, the Radar School was established at Keesler (transferred from Boca Raton Army Air Field), making it responsible for operating the two largest military technical schools in the United States. Thereafter, shrinking budgets forced the base to reduce its operating costs: the Airplane and Engine Mechanics School and the Radar School were consolidated on 1 April 1948.

In early 1949, the Radio Operations School transferred to Keesler from Scott Air Force Base, Illinois. In addition to training radio operators, Keesler was to begin teaching air traffic service technicians; aircraft approach controllers, ground radar mechanics, and radar repairman/ground controlled approach specialists. The last mechanics training courses had moved to Sheppard Air Force Base, Texas, by November.

In early 1956, Keesler entered the missile age by opening a ground support training program for the Atlas missile. In 1958, all control tower operator, radio maintenance, and general radio operator courses were put under Keesler's already broad technical training roof.

During the early 1960s, Keesler lost many of its airborne training courses, but it remained the largest training base throughout the 1970s. This included limited flight training operations in the T-28 Trojan for Republic of Vietnam Air Force (VNAF) student pilots.

Hurricane Camille produced considerable damage as it passed over Biloxi in 1969. Most of the Back Bay housing area was under water.

Keesler's student load dropped to an all-time low after the Vietnam War ended. As a result, Air Training Command inactivated the USAF School of Applied Aerospace Sciences on 1 April 1977 and replaced it with the 3300th Technical Training Wing, which activated the same day.

During the early 1980s Keesler's air traffic control program garnered publicity when the Professional Air Traffic Controllers Organization walked off the job in August 1981. When President Ronald Reagan fired the strikers, Keesler-trained military air traffic controllers were used to direct some of the nation's air traffic. As the air traffic control school it was also the logical location for the USAF Combat Controllers.

Keesler AFB was the primary training base for many avionics maintenance career fields, including Electronic Warfare, Navigational Aids, Computer Repair and Ground Radio Repair. It was also the primary training base for most USAF administrative career fields.

From the 1990s

Driven by defense budget cuts, base closures following the end of the Cold War forced an end to technical training at Chanute Air Force Base, Illinois, and Lowry Air Force Base, Colorado, when those bases were closed by Base Realignment and Closure Commission (BRAC) actions. Keesler acquired Chanute's weather forecasting courses and Lowry's meteorology and precision measurement equipment laboratory training programs during 1992 and 1993.

Massive restructuring of the Air Force in the early 1990s also meant several changes for Keesler associate units. The first occurred when the 53d Weather Reconnaissance Squadron was inactivated in the active duty Air Force, transferred to the Air Force Reserve and reactivated on 30 June 1991.

On 1 July 1993, the Air Training Command (ATC) was redesignated the Air Education and Training Command (AETC) and the command reactivated Second Air Force (2nd AF), stationing it at Keesler. Second Air Force's mission is to oversee all technical training conducted within AETC. The same day, Keesler Training Center was inactivated, and the 81st Training Wing arrived at the base. The 45th Airlift Squadron (45 AS), part of the 314th Airlift Wing at Little Rock AFB, Arkansas, was also located at Keesler. The 45th AS provided flight crew training in the C-21 Learjet until 2007, when it moved to Scott AFB.

Keesler students evacuated to Sheppard Air Force Base on a C-17

On 29 August 2005 Keesler sustained a direct hit from Hurricane Katrina, which made its third Gulf Coast landfall as a Category 3 storm approximately 30 miles (48 km) to the west. Although non-essential personnel and Hurricane Hunter planes had been evacuated in advance, "drastic damage" was sustained by the base's industrial and housing areas. Due to storm surge about 50% of the base came under water; the commissary, base exchange, and some base housing units were flooded with more than six feet of water. By August 31, however, relief flights were landing at the base. On September 1 the first set of Airmen were evacuated to Sheppard AFB, TX. Other Airmen reached Sheppard AFB the next day, where they were welcomed and given basic items.

Units today

From 1993, the 81 TRW has provided technical training of airmen in select skill areas immediately following their completion of basic training, as well as providing additional or recurrent training. On average, Keesler has 3,100 students on base at a time. Much of the training they receive is in the field of electronics, such as wideband maintenance, ground radio, information technology, avionics, cryptography. The wing also trains meteorology personnel, radar operations, air traffic control, Aviation Resource Management (ARMS), and tropical cyclone forecasting. Keesler AFB is one of the largest technical training wings in AETC, with four training squadrons located in the training building complex known as "the triangle," the 334th, 335th, 336th, and the 338th. The 81st Medical Group is also located at the base and operates the second largest medical center in the Air Force.

The Air Force Reserve Command's 403d Wing is also on base, and is an Air Mobility Command (AMC)-gained composite unit. It has an airlift squadron (the 815th Airlift Squadron), and the 53rd Weather Reconnaissance Squadron, a WC-130 unit known as the "Hurricane Hunters."

Finally, Keesler is also home to CNATTU Keesler (Center for Naval Aviation Technical Training Unit), a training unit for U.S. Navy and U.S. Marine Corps enlisted personnel receiving training at Keesler, such as enlisted meteorology training, with their Air Force counterparts.

Previous names

• Biloxi Air Corps Technical School, 13 June 1941
• Keesler Army Airfield, 25 August 1941
• Keesler Air Force Base, 13 January 1948 – Present

Major commands to which assigned

• Air Corps Technical Training Command, 7 Feb 1941

Re-designated: Army Air Forces Technical Training Command, 1 March 1942

• Army Air Forces Flying Training Command, 7 July 1943

Re-designated: Army Air Forces Training Command, 31 July 1943

• Air Training Command, 1 July 1946
• Air Education and Training Command, 1 July 1993 – Present

Major units assigned

United States Air Force