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Fourth Air Force
Shield of the Fourth Air Force
Active	1 December 1985 - present (as Fourth Air Force) 24 September 1976 - 1 December 1985 (as Fourth Air Force (Reserve)) 20 January 1966 - 30 September 1969 18 September 1942 - 1 September 1960 (as Fourth Air Force) 26 March 1941 - 18 September 1942 (as 4 Air Force) 19 October 1940 - 26 March 1941 (as Southwest Air District) (84 years, 2 months)
Country	United States of America
Branch	United States Air Force (18 September 1947 – present) United States Army ( Army Air Forces, 20 June 1941 – 18 September 1947; Army Air Corps 19 October 1940 – 20 June 1941)
Type	Numbered Air Force
Role	Provide combat-ready reserve air mobility and support forces
Part of	Air Force Reserve Command
Headquarters	March Air Reserve Base, California, U.S.
Engagements	World War II – American Theater
Decorations	Air Force Outstanding Unit Award
Website	www.4af.afrc.af.mil
Commanders
Commander	Maj Gen Derin S. Durham
Vice Commander	Col Daniel J. Ebrecht
Command Chief	CCM Travon W. Dennis
Notable commanders	Carroll W. McColpin Benjamin H. King

The Fourth Air Force (4 AF) is a numbered air force of the Air Force Reserve Command (AFRC). It is headquartered at March Air Reserve Base, California.

4 AF directs the activities and supervises the training of more than 30,000 Air Force Reservists. If called to active duty, 4 AF's ready reserve units would be assigned to Air Mobility Command, Air Education and Training Command, and Pacific Air Forces. Several airfields are associated with the Fourth Air Force.

One of the four original pre–World War II numbered air forces, 4 AF was activated on 18 December 1940, at March Field, California with a mission of air defense of the Southwestern United States and Lower Midwest regions. During the war, its primary mission became the organization and training of combat units prior to their deployment to the overseas combat air forces.

4 AF is commanded by Major General Derin S. Durham.

Units

Fourth Air Force flying units include one unit-equipped air mobility and two unit-equipped airlift wings, five unit-equipped air refueling wings, three associate air mobility wings, two associate airlift wings and one associate air refueling wing.

• Headquarters, Fourth Air Force, March ARB, California

• 315th Airlift Wing, Joint Base Charleston, South Carolina

C-17 Globemaster III

• 349th Air Mobility Wing, Travis AFB, California

C-5 Galaxy, KC-10 Extender, C-17 Globemaster III

• 433d Airlift Wing, Lackland AFB, Texas

C-5 Galaxy

• 434th Air Refueling Wing, Grissom ARB, Indiana

KC-135R Stratotanker

• 439th Airlift Wing, Westover ARB, Massachusetts

C-5 Galaxy

• 445th Airlift Wing, Wright-Patterson AFB, Ohio

C-17 Globemaster III

• 446th Airlift Wing, McChord AFB, Washington

C-17 Globemaster III

• 452d Air Mobility Wing, March ARB, California

C-17 Globemaster III, KC-135R Stratotanker

• 459th Air Refueling Wing, Andrews AFB, Maryland

KC-135R Stratotanker

• 507th Air Refueling Wing, Tinker AFB, Oklahoma

KC-135R Stratotanker

• 512th Airlift Wing, Dover AFB, Delaware

C-5 Galaxy, C-17 Globemaster III

• 514th Air Mobility Wing, McGuire AFB, New Jersey

KC-10 Extender, C-17 Globemaster III

• 624th Regional Support Group, Hickam AFB, Hawaii
• 914th Air Refueling Wing, Niagara Falls Air Reserve Station, New York

KC-135R Stratotanker

• 916th Air Refueling Wing, Seymour Johnson AFB, North Carolina

KC-135R Stratotanker

• 927th Air Refueling Wing, MacDill AFB, Florida

KC-135R Stratotanker

• 931st Air Refueling Wing, McConnell AFB, Kansas

KC-135R Stratotanker

• 940th Air Refueling Wing, Beale AFB, California

KC-135R Stratotanker

• 911th Airlift Wing, Pittsburgh IAP Air Reserve Station, Pennsylvania

C-17 Globemaster III

History

One of the four original numbered air forces, Fourth Air Force was activated as the Southwest Air District of the GHQ Air Force on 18 December 1940, at March Field, California. It was redesignated Fourth Air Force on 26 March 1941 with a mission for the defense of the Southwest and Lower Midwest regions of the United States.

World War II

During World War II Fourth Air Force was the primary air defense command for the West Coast. The command also flew antisubmarine patrols along coastal areas of the Gulf of Mexico from after Pearl Harbor until October 1942. One of its primary fighter units was the 10th Fighter Wing at Hamilton Field, California.

On 29 September 1942, Rice Municipal Airport located in the Desert Training Center was acquired by the IV Air Support Command, and was operational by 26 October 1942. Re-designated Rice AAF it was used to train pilots and crews of aircraft whose mission it was to support ground troops.

Beginning in May 1942, the mission of Fourth Air Force became operational training of units and crews, and the replacement training of individuals for bombardment, fighter, and reconnaissance operations. It received graduates of Army Air Forces Training Command flight schools; navigator training; flexible gunnery schools and various technical schools, organized them into newly activated combat groups and squadrons, and provided operational unit training (OTU) and replacement training (RTU) to prepare groups and replacements for deployment overseas to combat theaters. The Fourth Air Force became predominantly a fighter OTU and RTU organization. Most P-51 Mustang and P-38 Lightning groups were trained by Fourth Air Force primarily due to the proximity of their manufacturing plants in Southern California. By 1944, most of the Operational Training of groups ended, with the command concentrating on RTU training of individual replacements using Army Air Force Base Units (AAFBU) as training organizations at the airfields controlled by Fourth Air Force.

Air Defense Wings were also organized for the major metropolitan areas along the West Coast, using training units attached to the Wings. By 1944 the likelihood of a full-scale air attack along the West Coast since the bombing of Dutch Harbor two years earlier was remote, and these air defense wings were reduced to paper units.

On 13 December 1944, First, Second, Third and Fourth Air Force were all placed under the unified command of the Continental Air Forces.

Air Defense Command

In March 1946, USAAF Chief General Carl Spaatz had undertaken a major re-organization of the postwar USAAF that had included the establishment of Major Commands (MAJCOM), who would report directly to HQ United States Army Air Forces. Continental Air Forces was inactivated, and Fourth Air Force was assigned to the postwar Air Defense Command in March 1946 and subsequently to Continental Air Command (ConAC) in December 1948 being primarily concerned with air defense.

The command was headquartered at Hamilton AFB, California and originally assigned the region of the CONUS west of the Rocky Mountains, roughly from the Pacific Ocean coast east to the eastern borders of, and . It was also responsible for training Air Force Reserve and Air National Guard personnel throughout the region.

By 1949 with the establishment of the Western Air Defense Force (WADF), the air defense mission of the command was transferred to WADF, leaving Fourth AF free to focus on its reserve training tasks, which it did for the next decade. On 1 September 1960, Air Defense Command inactivated Fourth Air Force, transferring its reserve training mission to the Sixth Air Force Reserve Region.

Fourth Air Force was re-activated on 20 January 1966 again at Hamilton AFB, as part of Air Defense Command with the inactivation of its organization of Air Defense Sectors. Its area of responsibility was essentially unchanged from its 1948 region. Subordinate organizations assigned by ADC were the 25th 26th and 27th Air Divisions.

On 16 January 1968 Air Defense Command was re-designated Aerospace Defense Command (ADCOM) as part of a restructuring of USAF air defense forces. Fourth Air Force's second period of service was short-lived, however, and the command was again inactivated as the result of a major ADCOM reorganization on 31 December 1969 of the First Fourth, Tenth Air Forces and several Air Divisions. This reorganization was the result of the need to eliminate intermediate levels of command in ADCOM driven by budget reductions and a perceived lessening of the need for continental air defense against attacking Soviet aircraft.

ADCOM reassigned the units under the inactivated Fourth Air Force were reassigned primarily to the 25th and 26th Air Divisions.

Air Force Reserve

The command remained inactive until 8 October 1976, when it was activated as Fourth Air Force (Reserve) at McClellan Air Force Base, CA, and assigned to the Air Force Reserve. Fourth Air Force has been a key component of the Air Force reserve ever since.

Fourth Air Force personnel supported operations in Grenada (Operation Urgent Fury) and Panama (Operation Just Cause). More than 8,000 Air Force Reservists assigned to Fourth Air Force units served in the United States, Europe, and the Persian Gulf during Operation Desert Shield and Desert Storm. This included more than 2,878 medical personnel assigned to Fourth Air Force units.

Since the end of the Cold War, Fourth Air Force has supported humanitarian missions such as Provide Promise in the Balkans and Provide Relief and Restore Hope in Somalia. Units rushed to provide aid and rescue service to the residents of Florida, the Gulf Coast, and the Caribbean in the aftermath of the traumatic and prolonged 1995 hurricane season. It supported immediate assistance to aid victims and disaster officials following the bombing of the Oklahoma City Federal Building. Fourth Air Force units provided assistance for several natural disasters, including the 1994 Northridge earthquake in the Los Angeles area, and the catastrophic midwest floods and the California wildfires in 1993.

Fourth Air Force units routinely support United Nations and Department of State missions. Fourth Air Force people were on the first teams into Haiti for Operation Uphold Democracy, and supported Vigilant Warrior and Desert Thunder deployments to Southwest Asia. The men and women of Fourth Air Force continue to perform international peacekeeping and humanitarian missions on an almost daily basis. Headquarters Fourth Air Force officially returned to its original home, now March Air Reserve Base, in Riverside, CA, in April, 1998.

In 2003 Fourth Air Force became an intermediate echelon responsible primarily for all Air Mobility Command gained AFRC air refueling units in the United States and AMC gained AFRC strategic airlift units in the western United States. Today the sixty person staff consists of Traditional Reservists, Air Reserve Technicians and civilian employees. They direct the activities and supervise the equipping and training of more than 30,000 Air Force reservists in unit programs located across the continental United States, Alaska, Hawaii and Guam. Reservists from 4 AF units were routinely deployed with Air Expeditionary units to fight in the Afghanistan War (2001-2021); the Iraq War (2003-2011); and later anti-ISIS (Daesh) operations.

Lineage

• Established as Southwest Air District on 19 October 1940

Activated on 18 December 1940

Redesignated: 4 Air Force on 26 March 1941

Redesignated; Fourth Air Force on 18 September 1942

Discontinued, and inactivated on 1 September 1960

• Activated on 20 January 1966

Organized on 1 April 1966

Inactivated on 30 September 1969

• Redesignated Fourth Air Force (Reserve) on 24 September 1976

Activated in the Reserve on 8 October 1976

Redesignated Fourth Air Force on 1 December 1985.

Assignments

• General Headquarters Air Force (later, Air Force Combat Command), 18 December 1940
• Western Defense Command, 11 December 1941
• United States Army Air Forces, 10 September 1943
• Continental Air Forces, 13 December 1944
• Air Defense Command, 21 March 1946
• Continental Air Command, 1 December 1948 – 1 September 1960
• Air (later, Aerospace) Defense Command, 20 January 1966 – 30 September 1969
• Air Force Reserve (later, Air Force Reserve Command), 8 October 1976 – .

Stations

• March Field, California, 18 December 1940
• Riverside, California, 20 January 1941
• Hamilton Field, California, 7 December 1941
• San Francisco, California, 5 January 1942
• Hamilton Field (later, AFB), California, 19 June 1946 – 1 September 1960; 1 April 1966 – 30 September 1969
• McClellan Air Force Base, California, 8 October 1976
• March ARB, California, 1 April 1998 – present

Components

Commands

• I Staging: 19 November 1945 – 3 April 1946
• 4th Air Force Service (later, 4th Air Force Base; IV Air Force Base): 1 October 1941 – 31 March 1942
• 4th Air Support (later, IV Air Support; IV Ground Air Support): 3 September 1941 – 17 August 1942
• 4th Antiaircraft: 1 May 1944 – 6 February 1946
• Bomber Command, 4th Air Force (later, 4th Bomber, IV Bomber): 11 April – 19 September 1941; 19 September 1941 – 31 March 1944
• Interceptor Command, 4th Air Force (later, 4th Interceptor, IV Interceptor; IV Fighter): 22 April – 8 July 1941; 8 July 1941 – 31 March 1944.
• IV Emergency Rescue (Provisional): 30 December 1943 – 22 January 1944.
• Antiaircraft Artillery (Provisional): 27 December 1943 – 30 April 1944.

Regions

• Los Angeles Air Defense Region: 1 Jul 1944 – 31 Aug 1945
• San Francisco Air Defense Region: 1 Jul 1944 – 31 Aug 1945
• Seattle Air Defense Region: 1 Jul 1944 – 31 Aug 1945
• Sixth Air Force Reserve Region: 1 Jul – 1 Sep 1960.

District

• 4th Air Reserve District: 1 Dec 1951 – 1 Apr 1954.

Air Divisions

• 25th Air Division (later, 25th Air): 25 October 1948 – 1 April 1949; 8 July 1949 – 1 August 1950 (detached 10 November 1949 – 1 August 1950); 1 April 1966 – 15 September 1969.
• 26th Air Division: 1 April 1966 – 30 September 1969.
• 27th Air Division: 1 April 1966 – 15 September 1969
• 28th Air Division: 8 December 1949 – 1 August 1950 (detached 1 January – 1 August 1950).

Sectors

• Los Angeles Air Defense Sector: 1 Apr – 25 Jun 1966
• Reno Air Defense Sector: 1 Apr – 25 Jun 1966

Wing

• 552d Airborne Early Warning and Control Wing, 1 April 1966 – 15 September 1969

Groups (incomplete)

• 64th Transport Group, 4 December 1940 - 31 March 1942
• 473d Fighter Group, 1 November 1943 – 31 March 1944

List of commanders

Fourth Air Force (1940–1960)

No.	Commander		Term
	Portrait	Name	Took office	Left office	Term length
1		Fickel, Jacob E.Major General Jacob E. Fickel	18 December 1940	2 April 1942	1 year, 105 days
2		Kenney, George C.Major General George C. Kenney	2 April 1942	22 July 1942	111 days
3		Giles, Barney M.Major General Barney M. Giles	22 July 1942	18 March 1943	239 days
4		Kepner, William E.Major General William E. Kepner	18 March 1943	8 July 1943	112 days
5		Lynd, William E.Major General William E. Lynd	8 July 1943	14 July 1944	1 year, 6 days
6		Parker, James E.Major General James E. Parker	14 July 1944	3 January 1945	173 days
-		Strickland, Auby C.Brigadier General Auby C. Strickland Acting	3 January 1945	25 January 1945	22 days
6		Parker, James E.Major General James E. Parker	25 January 1945	19 May 1945	114 days
-		Morris, Edward M.Brigadier General Edward M. Morris Acting	19 May 1945	6 July 1945	48 days
7		Hale, Willis H.Major General Willis H. Hale	6 July 1945	1 November 1947	2 years, 118 days
-		Schramm, NedBrigadier General Ned Schramm Acting	1 November 1947	20 January 1948	80 days
8		Upston, John E.Major General John E. Upston	20 January 1948	c. 30 September 1950	c. 2 years, 253 days
9		Kincaid, Alvan C.Major General Alvan C. Kincaid	c. 30 September 1950	15 December 1950	c. 76 days
-		Duncan, Claude E.Colonel Claude E. Duncan Acting	15 December 1950	29 January 1951	45 days
10		Hall, William E.Major General William E. Hall	29 January 1951	8 September 1952	1 year, 223 days
11		Kessler, Alfred A.Major General Alfred A. Kessler	8 September 1952	1 February 1955	2 years, 146 days
-		Northrup, George G.Colonel George G. Northrup Acting	1 February 1955	4 February 1955	3 days
12		Landry, Robert B.Major General Robert B. Landry	4 February 1955	27 June 1957	2 years, 143 days
-		Northrup, George G.Colonel George G. Northrup Acting	27 June 1957	30 August 1957	64 days
13		Smith, SoryMajor General Sory Smith	30 August 1957	1 September 1960	3 years, 2 days

Fourth Air Force (1966–1969)

No.	Commander		Term
	Portrait	Name	Took office	Left office	Term length
14		McColpin, Carroll W.Major General Carroll W. McColpin	1 April 1966	23 July 1966	113 days
-		Rouse, John A.Brigadier General John A. Rouse Acting	23 July 1966	25 August 1966	33 days
14		McColpin, Carroll W.Major General Carroll W. McColpin	25 August 1966	30 August 1968	2 years, 5 days
15		Burns, Robert W.Major General Robert W. Burns	30 August 1968	1 August 1969	336 days
-		Strickland, Eugene L.Brigadier General Eugene L. Strickland Acting	1 August 1969	30 September 1969	60 days

Fourth Air Force (1976–present)

No.	Commander		Term
	Portrait	Name	Took office	Left office	Term length
16		Novaresi, Sidney S.Major General Sidney S. Novaresi	8 October 1976	April 1981	c. 4 years, 189 days
17		Gill, Sloan R.Major General Sloan R. Gill	April 1981	1 November 1982	c. 1 year, 200 days
18		Mortensen, Robert G.Brigadier General Robert G. Mortensen	1 November 1982	1 May 1985	2 years, 181 days
19		Wahleithner, James C.Major General James C. Wahleithner	1 May 1985	4 February 1990	4 years, 279 days
20		Sherrard, James E.Major General James E. Sherrard III	4 February 1990	1 July 1993	3 years, 147 days
21		Whaley, Wallace W.Major General Wallace W. Whaley	1 July 1993	7 August 2000	7 years, 37 days
22		Czekanski, James P.Major General James P. Czekanski	7 August 2000	7 September 2003	3 years, 31 days
23		Duignan, Robert E.Major General Robert E. Duignan	7 September 2003	c. January 2009	c. 5 years, 130 days
24		Crabtree, Eric W.Major General Eric W. Crabtree	c. January 2009	c. March 2011	c. 2 years, 59 days
25		Kyle, Mark A.Major General Mark A. Kyle	c. March 2011	October 2013	c. 2 years, 230 days
26		Major General John C. Flournoy Jr.	3 November 2013	7 February 2017	3 years, 96 days
27		Major General Randall A. Ogden	7 February 2017	7 April 2020	3 years, 60 days
28		Major General Jeffrey T. Pennington	~7 April 2020	August 2022	~2 years, 116 days
29		Major General Derin S. Durham	10 September 2022	Incumbent	2 years, 100 days

References

 This article incorporates public domain material from the Air Force Historical Research Agency

1. ^ Musser, James (7 February 2022). "Fourth Air Force (AFRC)". Air Force Historical Research Agency.
2. ^ "Fourth Air Force Fact Sheet". Fourth Air Force. January 2023.

• Maurer, Maurer (1983). Air Force Combat Units of World War II. Maxwell AFB, Alabama: Office of Air Force History. ISBN 0-89201-092-4.
• Ravenstein, Charles A. (1984). Air Force Combat Wings Lineage and Honors Histories 1947–1977. Maxwell AFB, Alabama: Office of Air Force History. ISBN 0-912799-12-9.
• A Handbook of Aerospace Defense Organization 1946–1980, by Lloyd H. Cornett and Mildred W. Johnson, Office of History, Aerospace Defense Center, Peterson Air Force Base, Colorado
• Winkler, David F. (1997), Searching the skies: the legacy of the United States Cold War defense radar program. Prepared for United States Air Force Headquarters Air Combat Command.

External links

• Fourth Air Force Factheet
• March Field Air Museum Official site

The Museum is located off the grounds of the Base and displays in its aircraft collection examples bombers, fighters, cargo, refueling and reconnaissance aircraft, many of which served at March Field, March AFB and/or March ARB.

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v t e Air Force Reserve Command (AFRC)
Air Forces	Fourth Tenth Twenty-Second
Bases	Dobbins Duke Field General Mitchell Grissom Homestead March Minneapolis-Saint Paul Niagara Falls Pittsburgh Westover Youngstown
Command	Air Reserve Personnel Center
Wings/Groups	Air Refueling 434th 459th 507th 916th 939th 940th Airlift 94th 302nd 315th 433rd 439th 440th 445th 446th 512th 908th 910th 911th 914th 927th 932nd 934th Fighter 301st 414th 419th 442nd 476th 477th 482nd 944th other 307th Bomb 310th Space 349th Air Mobility 403rd 452nd Air Mobility 514th Air Mobility 655th Intelligence, Surveillance and Reconnaissance 919th Special Operations 920th Rescue

v t e Aerospace Defense Command (ADC)
Bases	CONUS Amarillo Beale Charleston Davis-Monthan Dobbins Dover Dow Duluth Eglin Edwards Ellington Ellsworth England Ent Ethan Allen Fairfax Fallon Fort Gregg-Adams Fort Heath Geiger George Glasgow Grand Forks Grenier Griffiss Gunter Hamilton Hancock Homestead Hurlburt Hunter Imeson Key West Kincheloe Kingsley Kirtland Lackland Laredo Larson Luke MacDill March Malmstrom McCoy McChord McClellan McGhee Tyson McGuire Minneapolis-St. Paul Minot Mitchel New Castle Niagara Falls Norton O'Hare Otis Oxnard Paine Perrin Peterson Pittsburgh Portland Presque Isle R.I. Bong Richards-Gebaur Robins K.I. Sawyer Selfridge Seymour Johnson Sioux City Stead Stewart Suffolk County Tinker Travis Truax Tyndall Vandenberg Vincent Walker Webb Westover Wright-Patterson Wurtsmith Youngstown Overseas Ernest Harmon Frobisher Bay Goose Keflavik McAndrew Pepperrell Thule
Stations	CONUS Adair Aiken Almaden Alpena Antigo Arlington Heights Baker Bedford Bellefontaine Belleville Benton Blaine Brookfield Brunswick Bucks Harbor Burns Calumet Cambria Cape Charles Cape Cod Carmi Caswell Chandler Charleston Cheyenne Mountain Claysburg Clear Colville Condon Continental Divide Cottonwood Cross City Crystal Springs Curlew Custer Cut Bank Dallas Center Dauphin Island Dickinson Duncanville Eldorado Empire Finland Finley Flintstone Fordland Fort Fisher Fort Lee Fortuna Gettysburg Grand Marais Grand Rapids Guthrie Hanna City Havre Highlands Houma Hutchinson Joelton Keno Killeen Kingman Kirksville Klamath Lake Charles Lake City Las Cruces Las Vegas Lewistown Lockport Lufkin Lyndonville Madera Makah Mica Peak Miles City Mill Valley Minot Montauk Moriarty Mount Hebo Mount Laguna Mount Lemmon Naselle North Bend North Charleston North Truro Oklahoma City Olathe Omaha Opheim Osceola Othello Owingsville Ozona Palermo Point Arena Port Austin Port Isabel Pyote Red Bluff Rochester Rockport Rockville (Indiana) Roslyn Rye Saint Albans San Clemente Island Santa Rosa Island Saratoga Springs Sault Ste Marie Shemya Snelling Snow Mountain Sweetwater Texarkana Tierra Amarilla Thomasville Tonopah Topsham Two Creeks Wadena Walnut Ridge Watertown Waverly West Mesa Willow Run Winnemucca Winslow Winston-Salem Woomera Yaak Zapata Overseas Armstrong Baldy Hughes Beausejour Cape Makkovik Cartwright Cut Throat Island Elliston Ridge Fox Harbour Hofn Hopedale Kamloops La Scie Langanes Latrar Melville Puntzi Mountain Ramore Red Cliff Rockville Saglek St. Anthony Saskatoon Mountain Sioux Lookout Spotted Island Stephenville
Air Defense units	Forces Central Air Defense Eastern Air Defense Iceland Western Air Defense First Fourth Tenth Fourteenth Air Divisions 8th 9th 20th 21st 23d 24th 25th 26th 27th 28th 29th 30th 31st 32d 33d 34th 35th 36th 37th 58th 64th 73d 85th Sectors Albuquerque Bangor Boston Chicago Detroit Duluth Goose Grand Forks Great Falls Kansas City Los Angeles Minot Montgomery New York Oklahoma City Phoenix Portland Reno Sault Sainte Marie San Francisco Seattle Sioux City Spokane Stewart Syracuse Washington Wings Fighter 1st 4th 23d 32d 33d 50th 52d 56th 78th 81st 325th 328th 507th Detection and Control 71st 73d 551st 552d Air Defense 46th 4620th 4621st 4622d 4624th 4625th 4627th 4628th 4683d 4700th 4702d 4703d 4704th 4705th 4706th 4707th 4708th 4709th 4710th 4711th 4750th 4751st 4752d 4756th 4780th Groups Fighter 1st 4th 14th 15th 23d 32d 33d 50th 52d 53d 54th 56th 57th 78th 79th 81st 82d 84th 325th 326th 327th 328th 329th 337th 343d 355th 408th 412th 414th 473d 475th 476th 478th 507th Air Defense 10th 500th 501st 502d 503d 514th 515th 516th 517th 518th 519th 520th 521st 525th 527th 528th 529th 530th 533d 534th 564th 566th 567th 568th 575th 637th 665th 678th 692d 701st 751st 762d 765th 778th 780th 827th 858th 4606th 4620th 4676th 4700th 4721st 4722d 4727th 4728th 4729th 4730th 4731st 4732d 4733d 4734th 4735th 4750th 4756th Aircraft Control & Warning 503d 505th 540th 541st 542d 543d 544th 545th 546th 563d 564th 565th 566th Squadrons Aerospace Defense Command Fighter Squadrons Aircraft Control and Warning Squadrons
Major weapon systems	Electronic TB-29 EB-57 EC-121 Fighters Propeller: F-47 F-51 P-61 F-82 Subsonic Jet: P-80 F-84 F-86 F-89 F-94 Supersonic Jet: F-101 F-102 F-104 F-106 Missiles AIM-4 AIM-26 AIR-2 CIM-10 Ships Guardian Interceptor Interdictor Interpreter Investigator Locator Lookout Outpost Pickett Protector Scanner Searcher Skywatcher Tracer Watchman Vigil Texas Towers Texas Tower 2 Texas Tower 3 Texas Tower 4
Miscellaneous	Air Defense Command Emblem Gallery (on Wikimedia Commons) General Surveillance Radar Stations

v t e USAAF Fourth Air Force in World War II
Units	Commands IV Bomber Command IV Fighter Command IV Air Support Command Wings 21st Bombardment Los Angeles Fighter San Diego Fighter San Francisco Fighter Seattle Fighter Groups Bombardment 12th Bombardment 30th Bombardment 41st Bombardment 42nd Bombardment 47th Bombardment 380th Bombardment 385th Bombardment 389th Bombardment 392nd Bombardment 399th Bombardment 449th Bombardment 450th Bombardment 451st Bombardment 453rd Bombardment 454th Bombardment 455th Bombardment 456th Bombardment 461st Bombardment 463rd Bombardment 465th Bombardment 466th Bombardment 470th Bombardment 483rd Bombardment 486th Bombardment 491st Bombardment 492nd Bombardment Fighter 1st Fighter 14th Fighter 20th Fighter 35th Fighter 51st Fighter 55th Fighter 78th Fighter 81st Fighter 82nd Fighter 328th Fighter 329th Fighter 339th Fighter 354th Fighter 360th Fighter 363rd Fighter 364th Fighter 369th Fighter 367th Fighter 372nd Fighter 412th Fighter 473rd Fighter 474th Fighter 478th Fighter 479th Fighter Reconnaissance 68th Reconnaissance 69th Reconnaissance Troop Carrier 64th Troop Carrier
United States Army Air Forces First Second Third Fourth Fifth Sixth Seventh Eighth Ninth Tenth Eleventh Twelfth Thirteenth Fourteenth Fifteenth Twentieth

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