Marine Corps Air Station Yuma

Marine Corps Air Station Yuma or MCAS Yuma is a United States Marine Corps air station which is the home to multiple squadrons of AV-8B Harrier IIs of the 3rd Marine Aircraft Wing, Marine Aviation Weapons and Tactics Squadron 1 (MAWTS-1) and Marine Fighter Training Squadron 401 (VMFT-401), an air combat adversary squadron of the 4th Marine Aircraft Wing of the Marine Corps Reserve. It is a designated Superfund site due to a number of soil and groundwater contaminants, including asbestos.

The station is located 2 miles (3 km) from the city of Yuma, Arizona. A joint civilian-military airport, MCAS Yuma shares facilities with Yuma International Airport and occupies approximately 3000 acre, most of which is flat desert wilderness.

Tenant commands

 * Headquarters and Headquarters Squadron
 * Marine Aircraft Group 13
 * Marine Aviation Weapons and Tactics Squadron 1
 * Marine Air Control Squadron 1
 * Combat Logistics Company 16
 * Marine Wing Support Squadron 371
 * VMFT-401

Air Force use
In 1928, the federal Moving Picture Experts Group government purchased 640 acre near Yuma at the recommendation of Colonel Benjamin F. Fly. Temporary dirt runways were installed for usage by military and civilian planes. It was called Fly Field.

The outbreak of World War II transformed the civilian airport into the Yuma Army Airfield. Construction of facilities began on 1 June 1942 and was activated on 15 December

Yuma AAF was a single-engine flight training school, operated by the Army Air Forces Flying Training Command, West Coast Training Center, with flying training beginning in January 1943. Its training unit was the 307th Single Engine Flying Training Group which operated AT-6 Texans, with the base operating unit being the 403d Army Air Force Base Unit. In 1944, the unit was upgraded to multi-engine flight training, operating B-26 Marauders. In addition to the flying training, a Flexible Gunnery School was established at the airfield in November 1943. Flight training was discontinued on 23 April 1945 and gunnery training on 31 May 1945.

The base was closed on 1 November 1945. After the war, the airfield was turned over to the Department of the Interior as a headquarters for the Bureau of Land Reclamation.

Marine Corps use
The 4750th Air Defense Wing was inactivated at Vincent AFB on 15 June 1959 and control of the base was passed over to the United States Navy. Nine days later the base was turned over to the United States Marine Corps. The base was renamed Marine Corps Air Station Yuma (Vincent Field) on July 20, 1962.

MCAS Yuma is currently the busiest air station in the Marine Corps, offering excellent year-round flying conditions and thousands of acres of open terrain for air-to-ground weapons ranges and associated restricted airspace for military flight operations. During the 1960s, 70s and early 1980s, MCAS Yuma was home to VMFAT-101, the Marine Corps' Fleet Replacement Squadron (FRS) for the F-4 Phantom II, training U.S. Marine Corps, U.S. Navy and NATO/Allied flight crews and maintenance personnel in the F-4B, F-4J, F-4N and F-4S. Following the transfer of VMFAT-101 to MCAS El Toro, California in the 1980s, MCAS Yuma became the principal Fleet Marine Force Pacific operating base for the AV-8 Harrier and AV-8B Harrier II under the cognizance of Marine Aircraft Group 13 (MAG-13).

Marine Aviation Weapons and Tactics Squadron 1 (MAWTS-1) is a major aviation command at MCAS Yuma, conducting training for all Marine Corps tactical aviation units, most notably the Weapons and Tactics Instructor (WTI) course. Marine Fighter Training Squadron 401 (VMFT-401) is a Marine Air Reserve squadron also based at MCAS Yuma, containing both active duty and Selected Marine Corps Reservists, providing aerial adversary/aggressor services and dissimilar air combat training (DACT) for all US military services and selected NATO, Allied and Coalition partners. This base was also used in the late 80's early 90's as the Corps Airborne Training Center.

MCAS Yuma is currently programmed to become the Marine Corps' initial operating base for the F-35B variant of the F-35 Lightning II Joint Strike Fighter (JSF), the first of which arrived on 16 November 2012.