United States Air Force

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United States Air Force

The United States Air Force (USAF) is the aerial warfare service branch of the United States Armed Forces . It is a constituent part of the United States Department of Defense and stands as one of the six armed forces and one of the eight uniformed services of the United States. Its origins are traced back to August 1, 1907, when it was established as part of the United States Army Signal Corps . The USAF officially came into being on September 18, 1947, through the transfer of personnel from the Army Air Forces, following the enactment of the National Security Act of 1947 . It holds the distinction of being the second youngest branch of the U.S. Armed Forces and the fourth in terms of precedence. The United States Air Force defines its core missions as achieving air supremacy , conducting global integrated intelligence, surveillance and reconnaissance , providing rapid global mobility , executing global strike , and maintaining command and control .

The Department of the Air Force , which functions as the USAF’s headquarters and its executive department, operates as one of the three military departments under the Department of Defense. The Department of the Air Force is led by the civilian Secretary of the Air Force , who is accountable to the Secretary of Defense and is appointed by the President, with the advice and consent of the United States Senate . The highest-ranking military officer within the Air Force is the Chief of Staff of the United States Air Force , who oversees Air Force units and serves as a member of the Joint Chiefs of Staff . As directed by the Secretary of Defense and the Secretary of the Air Force, specific Air Force components are assigned to unified combatant commands . While combatant commanders hold operational authority over the forces assigned to them, the administrative authority over these members remains with the Secretary of the Air Force and the Chief of Staff of the Air Force.

Beyond its independent air operations, the United States Air Force is tasked with providing air support for land and naval forces, as well as assisting in the recovery of personnel in the field. As of 2020, the service operated approximately 5,500 military aircraft and roughly 400 ICBMs . It stands as the world’s largest air force, boasting a budget of $179.7 billion. It is also the second largest service branch within the U.S. Department of Defense, comprising 321,848 active duty personnel, 147,879 civilian employees, 68,927 Air Force Reserve personnel, 105,104 Air National Guard personnel, and an estimated 65,000 Civil Air Patrol auxiliaries.

Mission, Vision, and Functions

Missions

The National Security Act of 1947 (61 Stat. 502), which established the USAF, broadly defined its mission:

“In general, the United States Air Force shall include aviation forces both combat and service not otherwise assigned. It shall be organized, trained, and equipped primarily for prompt and sustained offensive and defensive air operations. The Air Force shall be responsible for the preparation of the air forces necessary for the effective prosecution of war except as otherwise assigned and, in accordance with integrated joint mobilization plans, for the expansion of the peacetime components of the Air Force to meet the needs of war.”

Furthermore, Section 9062 of Title 10 of the U.S. Code articulates the purpose of the USAF as follows:

• To preserve the peace and security, and to provide for the defense, of the United States, its Territories, Commonwealths, and possessions, and any areas occupied by the United States.
• To support national policy.
• To implement national objectives.
• To overcome any nations responsible for aggressive acts that imperil the peace and security of the United States.

Core Missions

The five core missions of the Air Force have remained remarkably consistent since its establishment in 1947, though they have evolved and are now articulated as: air superiority, global integrated ISR (intelligence, surveillance, and reconnaissance), rapid global mobility, global strike, and command and control. These missions collectively aim to provide what the Air Force describes as global vigilance, global reach, and global power.

Air Superiority

Air superiority is defined as “that degree of dominance in the air battle of one force over another which permits the conduct of operations by the former and its related land, sea, air, and special operations forces at a given time and place without prohibitive interference by the opposing force” (JP 1-02).

An F-35 Lightning II of the 33rd Fighter Wing arriving at Eglin Air Force Base .

Offensive Counter-Air (OCA) involves “offensive operations to destroy, disrupt, or neutralize enemy aircraft, missiles, launch platforms, and their supporting structures and systems both before and after launch, but as close to their source as possible” (JP 1-02). OCA is generally preferred as it aims to defeat threats closer to their origin and allows for the preservation of the initiative. OCA encompasses attack operations, sweeps, escorts, and the suppression or destruction of enemy air defenses.

Defensive Counter-Air (DCA) comprises “all the defensive measures designed to detect, identify, intercept, and destroy or negate enemy forces attempting to penetrate or attack through friendly airspace” (JP 1-02). DCA operations, in conjunction with OCA, strive to secure airspace for friendly force operations, free from air and missile threats. DCA includes both active and passive defense measures. Active defense involves “the employment of limited offensive action and counterattacks to deny a contested area or position to the enemy” (JP 1-02), encompassing ballistic missile defense, airborne threat defense, point defense, area defense, and the defense of high-value airborne assets. Passive defense, on the other hand, refers to “measures taken to reduce the probability of and to minimize the effects of damage caused by hostile action without the intention of taking the initiative” (JP 1-02). This includes detection and warning systems, chemical, biological, radiological, and nuclear defense, camouflage, concealment, and deception, hardening of facilities, reconstitution efforts, dispersion, redundancy, and mobility strategies.

Airspace control is a critical process designed to “increase operational effectiveness by promoting the safe, efficient, and flexible use of airspace” (JP 1-02). It aims to mitigate the risk of fratricide, enhance both offensive and defensive operations, and provide greater agility to air operations as a whole by deconflicting and integrating joint air operations.

Global Integrated ISR

Global integrated intelligence, surveillance, and reconnaissance (ISR) entails the synchronization and integration of planning and operations across sensors, assets, and processing, exploitation, and dissemination systems globally to support current and future operations.

An Air Force RQ-4 strategic reconnaissance aircraft .

Planning and directing involves “the determination of intelligence requirements, development of appropriate intelligence architecture, preparation of a collection plan, and issuance of orders and requests to information collection agencies” (JP 2-01). These activities are crucial for synchronizing and integrating collection, processing, exploitation, analysis, and dissemination to meet the intelligence needs of national and military decision-makers.

Collection is defined as “the acquisition of information and the provision of this information to processing elements” (JP 2-01). It ensures the acquisition of necessary information to fulfill intelligence requirements across all operational domains.

Processing and exploitation refers to “the conversion of collected information into forms suitable to the production of intelligence” (JP 2-01), transforming collected data into a usable format for further analysis or action.

Analysis and production is the process of “the conversion of processed information into intelligence through the integration, evaluation, analysis, and interpretation of all source data and the preparation of intelligence products in support of known or anticipated user requirements” (JP 2-01). This transforms raw information into actionable intelligence, enhancing situational awareness.

Dissemination and integration involves “the delivery of intelligence to users in a suitable form and the application of the intelligence to appropriate missions, tasks, and functions” (JP 2-01), ensuring that intelligence products are effectively utilized by decision-makers.

Rapid Global Mobility

Rapid global mobility is the capability to deploy, employ, sustain, augment, and redeploy military forces and capabilities in a timely manner across the Range of Military Operations (ROMO). It equips joint military forces with the ability to move efficiently while retaining their operational effectiveness. Rapid global mobility is indispensable for nearly all military operations, enabling swift responses and the seizure of initiative through speed and surprise.

An Air Force KC-46 Pegasus refueling a C-17A Globemaster III .

Airlift encompasses “operations to transport and deliver forces and materiel through the air in support of strategic, operational, or tactical objectives” (Annex 3–17). The inherent speed and flexibility of airlift empower military forces and national leaders to respond to diverse situations and timeframes, projecting U.S. power globally and demonstrating resolve in humanitarian crises.

Air refueling is defined as “the refueling of an aircraft in flight by another aircraft” (JP 1-02). It serves as a force multiplier, extending aircraft presence, increasing operational range, and enabling faster response times to global hotspots, reducing reliance on forward staging bases or overflight clearances.

Aeromedical evacuation is “the movement of patients under medical supervision to and between medical treatment facilities by air transportation” (JP 1-02). It involves the use of fixed-wing aircraft for the transport of casualties to medical facilities, with aircrew specifically trained for this critical mission.

Global Strike

Global precision attack refers to the capability to hold at risk or strike rapidly and persistently, with a diverse array of munitions, any target, achieving swift, decisive, and precise effects across multiple domains.

An Air Force A-10 Thunderbolt II demonstrating close air support at Nellis Air Force Base .

Strategic attack is defined as “offensive action specifically selected to achieve national strategic objectives. These attacks seek to weaken the adversary’s ability or will to engage in conflict, and may achieve strategic objectives without necessarily having to achieve operational objectives as a precondition” (Annex 3–70).

Air interdiction involves “air operations conducted to divert, disrupt, delay, or destroy the enemy’s military potential before it can be brought to bear effectively against friendly forces, or to otherwise achieve JFC objectives. Air Interdiction is conducted at such distance from friendly forces that detailed integration of each air mission with the fire and movement of friendly forces is not required” (Annex 3-03).

Close air support is defined as “air action by fixed- and rotary-winged aircraft against hostile targets that are in close proximity to friendly forces and which require detailed integration of each air mission with the fire and movement of those forces” (JP 1-02). This can be executed as a pre-planned event or on demand from an alert posture, and is applicable across the ROMO.

The purpose of nuclear deterrence operations (NDO) is to operate, maintain, and secure nuclear forces to ensure an assured capability to deter adversaries from actions that threaten vital U.S. interests. Should deterrence fail, the U.S. must be prepared to respond with nuclear options.

A test launch of an LGM-30 Minuteman Intercontinental Ballistic Missile from Vandenberg Air Force Base in 2003.

Assure/dissuade/deter is a mission set derived from the Air Force’s readiness to execute the nuclear strike operations mission, as well as specific actions taken to assure allies through extended deterrence. Dissuading proliferation of weapons of mass destruction (WMD) and their delivery systems contributes to promoting security. Deterrence strategies are tailored to various adversaries, including nation-states and non-state actors. The Air Force maintains and presents credible deterrent capabilities through visible demonstrations and exercises that reassure allies, dissuade proliferation, deter potential adversaries, and deploy U.S. forces and those of its allies and friends.

Nuclear strike refers to the ability of nuclear forces to rapidly and accurately strike targets of high value to the enemy in a devastating manner. In times of crisis, the rapid generation and deployment of nuclear strike capabilities demonstrate U.S. resolve and may compel an adversary to alter threatening actions. If deterrence fails, the President may authorize a precise, tailored response to terminate conflict at the lowest possible level. Post-conflict, the regeneration of credible nuclear deterrent capabilities deters further aggression. The Air Force must maintain the ability to engage targets globally using various methods, requiring the induction, training, assignment, education, and exercise of individuals and units to effectively execute missions supporting U.S. NDO objectives.

Nuclear surety ensures the safety, security, and effectiveness of nuclear operations. Due to their significant political and military importance, destructive power, and the potential consequences of accidents or unauthorized acts, nuclear weapons and systems require stringent protection against risks and threats. The Air Force, in conjunction with other entities within the Departments of Defense and Energy, maintains a high standard of protection through a robust nuclear surety program. This program governs materiel, personnel, and procedures to ensure safety, security, and control of nuclear weapons, thereby preventing nuclear accidents, incidents, loss, or unauthorized or accidental use (a Broken Arrow incident ). The Air Force continually strives for safe, secure, and effective nuclear weapons in line with operational requirements, ensuring adversaries, allies, and the American public have confidence in the secure handling of these weapons.

Command and Control

Command and control is defined as “the exercise of authority and direction by a properly designated commander over assigned and attached forces in the accomplishment of the mission. Command and control functions are performed through an arrangement of personnel, equipment, communications, facilities, and procedures employed by a commander in planning, directing, coordinating, and controlling forces and operations in the accomplishment of the mission” (JP 1-02). This core function encompasses all C2-related capabilities and activities associated with air, cyberspace, nuclear, and agile combat support operations to achieve strategic, operational, and tactical objectives.

A Combined Air Operations Center at Al Udeid Air Base .

At the strategic level, command and control involves determining national or multinational security objectives and guidance, and utilizing national resources to achieve these objectives. These national objectives, in turn, guide the development of overall military objectives, which then inform the objectives and strategy for each theater of operations.

At the operational level, command and control focuses on the planning, execution, sustainment, and assessment of campaigns and major operations to achieve strategic goals within specific theaters or areas of operations. These activities encompass a broader scope of time and space than tactics, serving as the means by which tactical successes are leveraged to achieve strategic and operational objectives.

Tactical level command and control is where individual battles and engagements are fought. It pertains to the specific employment of forces and the execution of engagements and target attacks. The ultimate goal of tactical level C2 is to achieve the commander’s intent and desired effects by maintaining the offensive initiative.

History

The genesis of the United States Air Force can be traced back to the Union Army Balloon Corps during the American Civil War . Established by aeronaut Thaddeus S. C. Lowe , this corps provided aerial reconnaissance for the Union Army , marking an early application of balloons for military purposes and a significant step towards the development of modern aerial warfare.

The U.S. War Department established the first precursor to the U.S. Air Force on August 1, 1907, as a component of the U.S. Army. Through a series of organizational changes, title shifts, and evolving missions, this entity progressed towards its eventual independence 40 years later. During World War II , nearly 68,000 U.S. airmen perished, a casualty count surpassed only by the infantry. Despite the U.S. Army Air Forces (USAAF ) functioning with near-autonomy during the war, airmen continued to advocate for formal independence. The National Security Act of 1947 , signed on July 26, 1947, established the Department of the Air Force . The Air Force was officially constituted as an independent service branch on September 18, 1947, with the swearing-in of its first Secretary, W. Stuart Symington .

The act also established the National Military Establishment, later renamed the United States Department of Defense in 1949. This establishment comprised three subordinate Military Departments: the Department of the Army , the Department of the Navy , and the newly formed Department of the Air Force. Prior to 1947, responsibility for military aviation was shared between the Army Air Forces (for land-based operations), the U.S. Navy (for carrier-based and amphibious aircraft), and the United States Marine Corps (for close air support of Marine operations). The 1940s proved to be a pivotal decade for military aviation; in 1947, Air Force Captain Chuck Yeager achieved a significant milestone by breaking the sound barrier in his X-1 rocket-powered aircraft, heralding a new era in American aeronautics.

The various roundels that have adorned U.S. military aircraft are as follows: 1.) 5/1917–2/1918, 2.) 2/1918–8/1919, 3.) 8/1919–5/1942, 4.) 5/1942–6/1943, 5.) 6/1943–9/1943, 6.) 9/1943–1/1947, 7.) 1/1947–.

Antecedents

The predecessor organizations within the Army that evolved into today’s Air Force include:

• Aeronautical Division, Signal Corps (August 1, 1907 – July 18, 1914)
• Aviation Section, Signal Corps (July 18, 1914 – May 20, 1918)
• Division of Military Aeronautics (May 20, 1918 – May 24, 1918)
• U.S. Army Air Service (May 24, 1918 – July 2, 1926)
• U.S. Army Air Corps (July 2, 1926 – June 20, 1941)
• U.S. Army Air Forces (June 20, 1941 – September 18, 1947)

21st Century

In the early 2000s, the USAF faced delays in two significant aircraft procurement projects: the KC-X and the F-35 programs. Consequently, the USAF experienced an increase in the average age of its aircraft fleet.

Since 2005, the USAF has placed a considerable emphasis on enhancing its Basic Military Training (BMT) for enlisted personnel. While the intensity of this training has increased, it now incorporates a deployment phase, known as the BEAST, which immerses trainees in a simulated combat environment. This exercise includes tackling obstacle courses, defending operational bases, developing leadership skills, conducting search and recovery operations, and practicing basic self-aid buddy care, with Military Training Instructors (MTIs) acting as mentors and opposing forces. In November 2022, the USAF announced the discontinuation of BEAST, replacing it with a new deployment training program called PACER FORGE.

In 2007, the USAF implemented a Reduction-in-Force (RIF) due to budget constraints, planning to decrease its active-duty personnel from 360,000 to 316,000. The active-duty force in 2007 represented approximately 64% of its size at the conclusion of the first Gulf War in 1991. However, this reduction was halted around 330,000 personnel in 2008 to meet the demands of combatant commanders and associated mission requirements. These financial constraints also led to a significant reduction in flight hours for crew training since 2005 and prompted the Deputy Chief of Staff for Manpower and Personnel to initiate Airmen’s Time Assessments.

On June 5, 2008, Secretary of Defense Robert Gates accepted the resignations of both the Secretary of the Air Force , Michael Wynne , and the Chief of Staff of the United States Air Force , General T. Michael Moseley . Gates cited “systemic issues associated with… declining Air Force nuclear mission focus and performance” as the reason for his decision, though he omitted that he had also clashed with Wynne and Moseley on other critical issues. This action followed an investigation into two incidents involving the mishandling of nuclear weapons : a nuclear weapons incident aboard a B-52 flight and the accidental shipment of nuclear weapons components to Taiwan. To enhance its focus on nuclear assets, the USAF established the nuclear-centric Air Force Global Strike Command on October 24, 2008, which later assumed oversight of all USAF bomber aircraft.

On June 26, 2009, the USAF unveiled a force structure plan that included reductions in fighter aircraft and a reallocation of resources to bolster nuclear, irregular, and information warfare capabilities. On July 23, 2009, the USAF released its Unmanned Aerial System (UAS) Flight Plan, outlining its UAS strategy through 2047, with unmanned aircraft projected to constitute one-third of future USAF acquisitions. Air Force Chief Scientist Greg Zacharias indicated that the USAF anticipates deploying hypersonic weapons by the 2020s, hypersonic unmanned aerial vehicles (also known as remotely piloted aircraft or RPAs) by the 2030s, and recoverable hypersonic RPA aircraft by the 2040s. The USAF intends to field a Sixth-generation jet fighter by the mid-2030s.

On October 22, 2023, the USAF conducted its inaugural trilateral exercise with the South Korean and Japanese air forces in the vicinity of the Korean Peninsula. On November 29, 2023, a USAF Bell Boeing V-22 Osprey crashed on the Japanese island of Yakushima, resulting in the death of one airman.

In 2024, citing the Supreme Court ’s ruling in Loper Bright Enterprises v. Raimondo , the Air Force declined to comply with an EPA order mandating the development of a cleanup plan for drinking water near Tucson, Arizona , following groundwater contamination attributed to PFAS runoff from nearby Air Force bases.

General David Allvin , the head of the U.S. Air Force (USAF), stated earlier in 2024 that the United States could no longer rely on its air dominance for an extended period.

Conflicts

The SR-71 Blackbird was a Cold War reconnaissance plane . The F-117 Nighthawk was a stealth attack aircraft, with its sectional retirement from combat service occurring in April 2008.

The United States Air Force has participated in numerous wars, conflicts, and operations utilizing military air power. The USAF inherits the lineage and heritage of its predecessor organizations, which played a critical role in U.S. military operations since 1907:

• Mexican Expedition as Aviation Section, U.S. Signal Corps
• World War I as Aviation Section, U.S. Signal Corps and the United States Army Air Service
• World War II as the United States Army Air Forces
• Cold War
• Korean War
• Vietnam War
• Contemporary Historical Examination of Current Operations (CHECO)
• Operation Eagle Claw (1980 Iranian hostage rescue)
• Operation Urgent Fury (1983 U.S. invasion of Grenada)
• Operation El Dorado Canyon (1986 U.S. bombing of Libya)
• Operation Just Cause (1989–1990 U.S. invasion of Panama)
• Gulf War (1990–1991)
  • Operation Desert Shield (1990–1991)
  • Operation Desert Storm (1991)
• Operation Southern Watch (1992–2003 Iraq no-fly zone)
• Operation Deliberate Force (1995 NATO bombing in Bosnia and Herzegovina)
• Operation Northern Watch (1997–2003 Iraq no-fly zone)
• Operation Desert Fox (1998 bombing of Iraq)
• Operation Allied Force (1999 NATO bombing of Yugoslavia)
• Afghanistan War (2001–2021)
  • Operation Enduring Freedom (2001–2014)
  • Operation Freedom’s Sentinel (2015–2021)
• Iraq War (2003–2011)
  • Operation Iraqi Freedom (2003–2010)
  • Operation New Dawn (2010–2011)
• Operation Odyssey Dawn (2011 Libyan no-fly zone)
• Operation Inherent Resolve (2014–present: intervention against the Islamic State of Iraq and the Levant )

In addition, given its significant capabilities, the USAF often provides support to allied forces in conflicts where the United States is not directly involved, such as the 2013 French campaign in Mali .

Humanitarian Operations

A formation of Douglas C-54 Skymasters during the Berlin Airlift in 1949.

The USAF has also participated in numerous humanitarian operations. Some of the more significant ones include:

• Berlin Airlift (Operation Vittles), 1948–1949
• Operation Safe Haven, 1956–1957
• Operations Babylift , New Life , Frequent Wind , and New Arrivals , 1975
• Operation Provide Comfort , 1991
• Operation Sea Angel , 1991
• Operation Provide Hope , 1992–1993
• Operation Provide Promise , 1992–1996
• Operation Unified Assistance , December 2004 – April 2005 (in response to the 2004 Indian Ocean earthquake and tsunami )
• Operation Unified Response, January 14, 2010 – March 22, 2010 (following the 2010 Haiti earthquake)
• Operation Tomodachi, March 12, 2011 – May 1, 2011 (in response to the 2011 Tōhoku earthquake and tsunami)

Culture

Various Air Force personnel pose during the Air Force’s 74th birthday celebration at the Pentagon on September 17, 2021.

The culture of the United States Air Force has historically been shaped significantly by its pilots, initially those who flew bombers (influenced by the Bomber Mafia ), and subsequently by fighter pilots (Fighter Mafia ).

In response to a 2007 United States Air Force nuclear weapons incident , Secretary of Defense Robert Gates accepted the resignations of Secretary of the Air Force Michael Wynne and Chief of Staff of the United States Air Force General T. Michael Moseley in June 2009. Moseley’s successor, General Norton A. Schwartz , a former airlift and special operations pilot, was the first officer appointed to that position without a background as a fighter or bomber pilot. In 2010, The Washington Post reported that General Schwartz initiated efforts to dismantle the USAF’s rigid class system, particularly within the officer corps.

In 2014, following morale and testing/cheating scandals within the Air Force’s missile launch officer community, Secretary of the Air Force Deborah Lee James acknowledged a “systemic problem” in the USAF’s management of the nuclear mission.

Daniel L. Magruder Jr. characterizes USAF culture as a synthesis of advanced technology application, individualism, and progressive airpower theory. Major General Charles J. Dunlap Jr. further posits that the U.S. Air Force’s culture includes an egalitarianism stemming from officers perceiving themselves as the primary “warriors” of their service, working collaboratively with small groups of enlisted airmen. Historically, Air Force officers have not felt the need for the formal social “distance” from their enlisted force that is customary in other U.S. armed services. While this paradigm is evolving, for much of its existence, the Air Force, unlike its sister services, was an organization where officers primarily engaged in combat, with the enlisted force serving mainly in support roles. When enlisted personnel did face combat situations, such as crew members of multi-crewed aircraft, the close camaraderie forged in shared risk within confined spaces contributed to unique officer/enlisted relationships.

Cultural and career-related issues within the U.S. Air Force have been identified as contributing factors to a shortfall in qualified UAV operators. Despite the significant demand for UAVs to provide continuous surveillance for American troops during the Iraq War, the USAF did not establish a dedicated career field for piloting them until the final year of that conflict. In 2014, the USAF revised its RPA training syllabus again, following substantial aircraft losses during training and in response to a critical GAO report on drone program management. Paul Scharre has observed that cultural differences between the USAF and the U.S. Army have hindered the adoption of each service’s drone handling innovations by the other.

Many of the U.S. Air Force’s formal and informal traditions are a blend of those inherited from the Royal Air Force (such as dining-ins/mess nights) and the experiences of its predecessor organizations, including the U.S. Army Air Service , U.S. Army Air Corps , and the U.S. Army Air Forces . These traditions range from “Friday Name Tags” in flying units to an annual “Mustache Month.” The practice of using “challenge coins” dates back to World War I, when a member of an aero squadron purchased medallions bearing his unit’s emblem for the entire squadron. Another unique Air Force tradition is the “roof stomp ,” performed by Airmen to welcome a new commander or commemorate events such as retirements.

Organization

The administrative structure of the U.S. Air Force places it within the Department of the Air Force , one of the three military departments under the Department of Defense . This department is overseen by the civilian Secretary of the Air Force , operating under the authority, direction, and control of the Secretary of Defense . The senior leadership within the Office of the Secretary includes the Under Secretary of the Air Force , four Assistant Secretaries of the Air Force , and the General Counsel , all appointed by the president with the advice and consent of the Senate . The senior uniformed leadership within the Air Staff comprises the Chief of Staff of the Air Force and the Vice Chief of Staff of the United States Air Force .

The directly subordinate commands and units are categorized as Field Operating Agencies (FOA) and Direct Reporting Units (DRU), with a currently unused category of Separate Operating Agency. The Major Command (MAJCOM) represents the highest hierarchical level of command. As of September 30, 2006, the USAF included ten major commands, including the Air Force Reserve Command . The Numbered Air Force (NAF) serves as a command level directly beneath the MAJCOM, followed by Operational Command (now unused), Air Division (also now unused), Wing , Group , Squadron , and Flight.

Air Force Structure and Organization

The following table outlines the current structure of the United States Air Force, as of recent data:

Direct Reporting Units:

As of August 28, 2015, the major components of the U.S. Air Force consist of:

• Active duty forces:
  • 57 flying wings and 55 non-flying wings
  • Nine flying groups and eight non-flying groups
  • 134 flying squadrons
• Air Force Reserve Command :
  • 35 flying wings
  • Four flying groups
  • 67 flying squadrons
• Air National Guard :
  • 89 flying wings
  • 101 flying squadrons

Collectively, the USAF, including its Air Reserve Component, operates a total of 302 flying squadrons.

Installations

• Main article: List of United States Air Force installations

Operational Organization

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• Main article: List of active United States Air Force aircraft squadrons

The organizational structure detailed above is responsible for the peacetime organization, equipping, and training of air units for operational missions. When required to support operational missions, the Secretary of Defense (SECDEF) directs the Secretary of the Air Force (SECAF) to execute a Change in Operational Control (CHOP) of these units, shifting them from their administrative alignment to the operational command of a Regional Combatant Commander (CCDR). In the case of Air Force Space Command (AFSPC), Air Force Special Operations Command (AFSOC), Pacific Air Forces (PACAF), and United States Air Forces in Europe (USAFE) units, forces are typically employed in-place under their existing CCDR. Similarly, Air Mobility Command (AMC) forces operating in support roles maintain their component status to USTRANSCOM unless chopped to a Regional CCDR.

Air Expeditionary Task Force

Units that have been “chopped” are referred to as forces. The highest-level structure for these forces is the Air Expeditionary Task Force (AETF). The AETF represents the Air Force’s contribution of forces to a CCDR for the employment of air power. Each CCDR is supported by a standing Component Numbered Air Force (C-NAF) responsible for the planning and execution of air forces in support of CCDR requirements. Each C-NAF comprises a Commander, Air Force Forces (COMAFFOR), an AFFOR/A-staff, and an Air Operations Center (AOC). When necessary to support multiple Joint Force Commanders (JFC) within a CCMD ’s Area of Responsibility (AOR), the C-NAF may deploy Air Component Coordinating Elements (ACCE) to liaise with the JFC. If the Air Force possesses the predominant air forces within a JFC’s area of operations, the COMAFFOR will also serve as the Joint Forces Air Component Commander (JFACC).

Commander, Air Force Forces

The Commander, Air Force Forces (COMAFFOR) is the senior USAF officer responsible for the employment of air power in support of JFC objectives. The COMAFFOR is supported by a special staff and an A-Staff to ensure that assigned or attached forces are properly organized, equipped, and trained to support the operational mission.

Air Operations Center

The Air Operations Center (AOC) functions as the JFACC’s Command and Control (C2) center. Several AOCs have been established throughout the Air Force worldwide, and these centers are responsible for planning and executing air power missions in support of JFC objectives.

Air Expeditionary Wings/Groups/Squadrons

The AETF generates air power to support CCMD objectives through Air Expeditionary Wings (AEW) or Air Expeditionary Groups (AEG). These units are responsible for receiving combat forces from Air Force MAJCOMs, preparing these forces for operational missions, launching and recovering them, and ultimately returning them to the MAJCOMs. The employment of forces during these missions is managed by Theater Air Control Systems.

Personnel

The classification of any USAF job for officers or enlisted airmen is known as the Air Force Specialty Code (AFSC).

AFSCs span a wide range of officer specialties, including pilot, combat systems officer , special tactics , nuclear and missile operations, intelligence, cyberspace operations, judge advocate general (JAG), medical doctor, nurse, and other fields. Enlisted specialties are equally diverse, ranging from flight combat operations such as loadmaster, to administrative roles in dining facilities. Additional occupational fields include computer specialties, mechanic specialties, enlisted aircrew , communication systems, cyberspace operations, avionics technicians, medical specialties, civil engineering, public affairs, hospitality, law, drug counseling, mail operations, security forces , and search and rescue specialties.

Beyond combat flight crew personnel, other combat-related USAF AFSCs include Special Tactics Officer , Explosive Ordnance Disposal (EOD), Combat Rescue Officer , Pararescue , Security Forces , Combat Control , Tactical Air Control Party , and Special Operations Weather Technician .

Nearly all enlisted career fields are considered “entry level,” meaning the USAF provides all necessary training. Some enlistees can choose their field before joining, while others are assigned an AFSC during Basic Military Training (BMT). Following BMT, new enlisted airmen attend a technical training school to learn their specific AFSC. Second Air Force, part of Air Education and Training Command, is responsible for the majority of enlisted technical training.

Training programs vary significantly in duration. For instance, the 3F1X1 (Services) career field involves 29 days of technical school training, while the 3E8X1 (Explosive Ordnance Disposal) program requires a year of training, including a preliminary school and a main school with over ten separate divisions, potentially extending the total training period to nearly two years. Officer technical training, also conducted by Second Air Force, varies by AFSC, and flight training for aeronautically rated officers administered by AETC’s Nineteenth Air Force can extend well beyond a year.

USAF Rank Structure

USAF rank is divided into enlisted airmen, non-commissioned officers, and commissioned officers, ranging from enlisted Airman Basic (E-1) to commissioned officer General (O-10). In times of war, officers may be appointed to the higher grade of General of the Air Force. Enlisted promotions are awarded based on a combination of test scores, years of experience, and selection board approval, while officer promotions are determined by time-in-grade and promotion selection boards. Promotions among enlisted personnel and non-commissioned officers are typically indicated by an increasing number of insignia chevrons. Commissioned officer ranks are designated by bars, oak leaves, a silver eagle, and stars, ranging from one to five stars. General of the Air Force Henry “Hap” Arnold is the sole individual in U.S. Air Force history to attain the rank of five-star general.

As of June 30, 2017, the demographic breakdown of the Air Force indicated that 70% of its members were White, 15% Black, and 4.8% Asian. The average age was 35, with 21% of its members being female.

Commissioned Officers

Commissioned officer ranks in the USAF are categorized into three groups: company grade officers (pay grades O-1 to O-3), field grade officers (pay grades O-4 to O-6), and general officers (pay grades O-7 and above).

Air Force officer promotions are regulated by the Defense Officer Personnel Management Act of 1980 and its companion Reserve Officer Personnel Management Act (ROPMA) for officers in the Air Force Reserve and Air National Guard. DOPMA also establishes limits on the number of officers serving in the Air Force at any given time. Currently, promotion from second lieutenant to first lieutenant is virtually guaranteed after two years of satisfactory service. Promotion from first lieutenant to captain is competitive, occurring after another two years of service, with a selection rate typically ranging from 99% to 100%. Promotions from major to major general are determined through a formal selection board process, while promotions to lieutenant general and general require nomination to specific general officer positions and are subject to U.S. Senate approval.

During the selection board process, an officer’s record is reviewed by a board at the Air Force Personnel Center at Randolph Air Force Base in San Antonio, Texas. At approximately the 10 to 11-year mark, captains undergo a selection board for promotion to major. If not selected, they face a follow-on board to determine their continued service eligibility. The promotion process from major to lieutenant colonel follows a similar pattern, occurring between the fourteen and fifteen-year mark, with a certain percentage of majors being “in zone” (promoted on time) or “above zone” (promoted late) for lieutenant colonel. This process is repeated at the 18 to 21-year mark for promotion to full colonel.

The Air Force exhibits the highest ratio of general officers to total strength among all U.S. Armed Forces, and this ratio has continued to increase even as the force has contracted from its Cold War levels.

Warrant Officers

While provisions existed in Title 10 of the United States Code for the Secretary of the Air Force to appoint warrant officers, the Air Force had not utilized warrant officer grades for many years. Along with the Space Force, it was one of the few U.S. Armed Services not to do so until 2024. The Air Force inherited warrant officer ranks from the Army at its inception in 1947. The Air Force ceased appointing warrant officers in 1959, the same year the first promotions were made to the new top enlisted grade, Chief Master Sergeant . The remaining warrant officers were gradually phased out.

The last active duty Air Force warrant officer, CWO4 James H. Long, retired in 1980, and the last Air Force Reserve warrant officer, CWO4 Bob Barrow, retired in 1992. Upon his retirement, he was honorarily promoted to CWO5, the only individual in the Air Force to ever hold this grade. Since Barrow’s retirement, the Air Force warrant officer ranks, although still legally authorized, remained unused.

It was announced at the AFA Warfare Symposium on February 12, 2024, that warrant officer ranks in the cyber and information technology fields would be reintroduced, commencing in FY25. This initiative was stated as an effort to retain talent in these technical fields for airmen who did not wish to pursue a leadership career path. The Air Force initially aimed for a cohort of 30 warrant officers to begin training by the summer of 2024. By the end of July 2024, 78 airmen had been selected to be among the first Air Force warrant officers in over 66 years, exceeding the original estimate by more than double. These 78 airmen will be distributed across three training classes, with the first commencing in October 2024. On December 6, 2024, 30 airmen graduated from the Air Force’s Warrant Officer Training School at Maxwell Air Force Base, Alabama, marking the first warrant officers to serve in the U.S. Air Force since 1992. These warrant officer candidates graduated as either Warrant Officer 1 or Chief Warrant Officer 2.

Enlisted Airmen

Enlisted airmen hold pay grades ranging from E-1 (entry level) to E-9 (senior enlisted). While all USAF personnel, both enlisted and officer, are referred to as airmen, similar to how all Army personnel are called soldiers, the term “airman” also specifically denotes the pay grades E-1 through E-4, which fall below the non-commissioned officer (NCO) level. Ranks above E-4, from E-5 through E-9, are categorized as NCOs and further subdivided into “NCOs” (pay grades E-5 and E-6) and “senior NCOs” (pay grades E-7 through E-9). The term “junior NCO” is occasionally used to refer to staff sergeants and technical sergeants (pay grades E-5 and E-6).

The USAF, along with the US Space Force , are the only branches of the U.S. military where NCO status is attained upon reaching the pay grade of E-5. In all other branches, NCO status is generally achieved at the pay grade of E-4 (e.g., a corporal in the Army and Marine Corps , or a Petty Officer Third Class in the Navy and Coast Guard ). From 1976 to 1991, the Air Force mirrored the Army’s structure, where an E-4 was either a senior airman with three stripes but no star, or a sergeant (referred to as “buck sergeant”), indicated by the presence of a central star, and considered an NCO. Despite not being an NCO, a senior airman who has completed Airman Leadership School can hold supervisory responsibilities, as per AFI 36–2618.

Uniforms

The initial USAF dress uniform, introduced in 1947, was dubbed and patented “Uxbridge blue,” derived from “Uxbridge 1683 blue,” a shade developed at the former Bachman-Uxbridge Worsted Company. The current service dress uniform, adopted in 1994, features a three-button coat with decorative pockets, matching trousers, and either a service cap or flight cap, all in Shade 1620, “Air Force blue” (a deeper purplish-blue). This is worn with a light blue shirt (shade 1550) and a shade 1620 herringbone patterned necktie. Silver “U.S.” pins adorn the collar of the coat, with a surrounding silver ring for enlisted airmen. Enlisted airmen wear sleeve rank insignia on both the jacket and shirt, while officers display metal rank insignia pinned to the epaulet loops on the coat and wear Air Force blue slide-on epaulet loops on the shirt. USAF personnel assigned to base honor guard duties may wear a modified version of the standard service dress uniform for certain occasions, which includes silver trim on the sleeves and trousers, a ceremonial belt (if necessary), a service cap with silver trim and the Hap Arnold Device (instead of the U.S. seal), and a silver aiguillette on the left shoulder seam, along with all applicable devices and accoutrements.

The Airman Combat Uniform (ACU), in the Operational Camouflage Pattern (OCP), replaced the preceding Airman Battle Uniform (ABU) on October 1, 2018.

Awards and Badges

In addition to basic uniform attire, the USAF utilizes various badges to signify billet assignments or qualification levels. Badges can also serve as merit-based or service-based awards . Over time, various badges have been discontinued and are no longer issued.

Training

All enlisted airmen undergo Basic Military Training (BMT) at Lackland Air Force Base in San Antonio , Texas, for a duration of 7½ weeks. Individuals with prior service exceeding 24 months in other service branches seeking to enlist in the Air Force are required to complete a 10-day Air Force familiarization course instead of the full enlisted BMT; however, prior service enlistment opportunities are significantly limited.

Officers can be commissioned upon graduation from the United States Air Force Academy , or through the Air Force Reserve Officer Training Corps (AFROTC) program after graduating from another college or university. The Air Force Officer Training School (OTS), located at Maxwell Air Force Base in Montgomery, Alabama since 1993, comprises two distinct commissioning programs: Basic Officer Training (BOT) for officer candidates of the Regular Air Force and the Air Force Reserve, and the Academy of Military Science (AMS) for officer candidates of the Air National Guard.

The Air Force also provides Commissioned Officer Training (COT) for officers from all three components who are directly commissioned into the medical, legal, religious, biological sciences, or healthcare administration fields. COT is fully integrated into the OTS program and includes extensive coursework as well as field exercises focusing on leadership, confidence, fitness, and deployed-environment operations.

Air Force Fitness Test

USAF Airmen undergoing training at Lackland AFB.

The US Air Force Fitness Test (AFFT) is designed to assess abdominal circumference, muscular strength and endurance, and cardiovascular respiratory fitness of airmen in the USAF. As part of the “Fit to Fight” program, the USAF adopted a more rigorous physical fitness assessment, implemented on June 1, 2010. The annual ergo-cycle test, which had been in use for several years, was replaced in 2004. In the AFFT, Airmen receive a score based on performance in four components: waist circumference, sit-ups, push-ups, and a 1.5-mile (2.4 km) run. Airmen can achieve a maximum score of 100, with the run accounting for 60% of the score, waist circumference for 20%, and both strength tests for 10% each. A passing score is 75 points. Effective July 1, 2010, the AFFT is administered by the base Fitness Assessment Cell (FAC) and is required twice annually. Personnel scoring over 90% may test once per year. It is important to note that merely meeting the minimum standards in each component will not result in a passing score of 75%; failing any single component leads to an overall failure of the test.

Aircraft Inventory

The U.S. Air Force maintains a total force of approximately 5,500 aircraft. Of these, an estimated 4,131 are in active service. Prior to 1962, the Army and Air Force shared a single aircraft naming system, while the U.S. Navy operated under a separate system. In 1962, these systems were unified into a single system that largely reflected the Army and Air Force methodology. For a comprehensive understanding of this system, refer to United States military aircraft designation systems . The diverse aircraft fleet of the Air Force includes:

A – Attack

The A-10 Thunderbolt II is a ground-attack aircraft . USAF attack aircraft are designed for ground target engagement and are frequently deployed to provide close air support for U.S. ground forces operating in close proximity. Their role is primarily tactical, focusing on direct battlefield support rather than deep enemy rear area operations. Current USAF attack aircraft are operated by Air Combat Command, Pacific Air Forces, and Air Force Special Operations Command. On August 1, 2022, USSOCOM selected the Air Tractor-L3Harris AT-802U Sky Warden as part of the Armed Overwatch program, awarding an indefinite delivery, indefinite quantity (IDIQ) contract for up to 75 aircraft.

• A-10C Thunderbolt II
• AC-130J Ghostrider
• OA-1K Skyraider II

B – Bomber

The B-2 Spirit is a stealth bomber . Air Force bombers serve as strategic weapons, primarily employed for long-range strike missions utilizing either conventional or nuclear ordnance. While traditionally used for strategic targets, many bombers now also fulfill tactical roles, such as providing close air support and conducting tactical interdiction missions. All Air Force bombers fall under the command of Global Strike Command.

The service’s B-2A aircraft entered operational service in the 1990s, the B-1B in the 1980s, and the current B-52H aircraft in the early 1960s. The B-52 Stratofortress airframe design is over 60 years old, with the B-52H aircraft in the active inventory all manufactured between 1960 and 1962. The B-52H is projected to remain in service for an additional 30 years, extending its operational life to nearly 90 years, an unprecedented duration for any aircraft. The B-21 is slated to replace the B-2 and portions of the B-1B fleet by the mid-2020s.

• B-1B Lancer
• B-2A Spirit
• B-52H Stratofortress

C – Cargo/Transport

A C-17 Globemaster III , the USAF’s newest and most versatile cargo aircraft . Cargo aircraft are typically employed to deliver troops, weapons, and other military equipment via various methods to any operational area worldwide, often outside of commercial flight routes and in uncontrolled airspace. The primary airlift assets of the USAF are the C-130 Hercules , C-17 Globemaster III , and C-5 Galaxy . The CV-22 is utilized by the Air Force for special operations, equipped with extra fuel tanks and terrain-following radar for long-range missions. Certain aircraft serve specialized cargo and transport roles, such as executive or embassy support (C-12), Antarctic support (LC-130H), and Air Force Special Operations Command (AFSOC) support (C-27J and C-146A). While most of the U.S. Air Force’s cargo aircraft were specifically designed for military use, some, like the C-12 Huron (Beechcraft Super King Air ) and C-146 (Dornier 328 ), are militarized versions of existing civilian aircraft. Transport aircraft are operated by Air Mobility Command, Air Force Special Operations Command, and United States Air Forces in Europe – Air Forces Africa.

• C-5M Galaxy
• C-12C, C-12D, C-12F and C-12J Huron
• C-17A Globemaster III
• C-130H, LC-130H, and WC-130H Hercules
• C-130J and C-130J-30 Super Hercules
• C-146A Wolfhound
• CV-22B Osprey

E – Special Electronic

The E-3 Sentry is an airborne warning and control system . The objective of electronic warfare is to deny the adversary an advantage in the EMS and ensure friendly forces have unimpeded access to the EM spectrum for information operations. Electronic warfare aircraft are crucial for maintaining secure airspace and disseminating critical information. Their roles vary significantly among different variants, including electronic warfare and jamming (EC-130H), psychological operations and communications (EC-130J), airborne early warning and control (E-3), airborne command post (E-4B), range control (E-9A), and communications relay (E-11A, EQ-4B).

• E-3B, E-3C and E-3G Sentry
• E-4B “Nightwatch”
• E-9A Widget
• E-11A
• EA-37B Compass Call
• EC-130H Compass Call
• EC-130J Commando Solo

F – Fighter

The F-22 Raptor is a stealth air superiority fighter . USAF fighter aircraft are typically small, fast, and highly maneuverable military aircraft primarily designed for air-to-air combat. Many of these fighters possess secondary ground-attack capabilities, and some are dual-role as fighter-bombers (e.g., the F-16 Fighting Falcon ). The term “fighter” is also sometimes used colloquially for dedicated ground-attack aircraft, such as the F-117 Nighthawk . Other missions include intercepting bombers and enemy fighters, reconnaissance, and patrol. The F-16 is currently operated by the USAF’s aerial demonstration squadron, the Thunderbirds . A limited number of both man-rated and non-man-rated F-4 Phantom II aircraft are retained as QF-4 aircraft for use as full-scale aerial targets (FSATs) or as part of the USAF Heritage Flight program. These QF-4 aircraft are being replaced in the FSAT role by early-model F-16 aircraft converted to the QF-16 configuration. As of September 2012, the USAF had 2,025 fighters in service.

• F-15C and F-15D Eagle
• F-15E Strike Eagle
• F-15EX Eagle II
• F-16C, F-16D Fighting Falcon
• F-22A Raptor
• F-35A Lightning II

H – Search and Rescue

These aircraft are utilized for search and rescue and combat search and rescue operations, both on land and at sea. The HC-130N/P aircraft are being supplanted by newer HC-130J models. HH-60W aircraft are being developed to replace the “G” model Pave Hawks, which have been lost in combat or accidents. The Air Force also operates four HH-60U “Ghost Hawks,” which are converted “M” variants based at Area 51 .

• HC-130N and HC-130P Combat King
• HC-130J Combat King II
• HH-60G, HH-60U and HH-60W Pave Hawk

K – Tanker

The USAF’s KC-135 and KC-46 aerial refueling aircraft are based on civilian jet platforms. These USAF aircraft are primarily equipped for aerial refueling via a tail-mounted boom and can also be fitted with “probe and drogue” refueling systems. Air-to-air refueling is extensively employed in large-scale operations and is also utilized in routine operations; fighters, bombers, and cargo aircraft rely heavily on these “tanker” aircraft, making them essential for the Air Force’s global mobility and U.S. force projection. The KC-10A Extender was retired in 2024. The KC-46A Pegasus began delivery to USAF units in 2019.

• KC-46A Pegasus
• KC-135R and KC-135T Stratotanker

M – Multi-mission

Specialized multi-mission aircraft provide support for global special operations missions, conducting infiltration, exfiltration, resupply, and refueling for SOF teams from improvised or short runways. The MC-130J is currently being fielded to replace the “H” and “P” models previously used by U.S. Special Operations Command.

Initial generations of Remotely Piloted Aircraft (RPAs) were primarily surveillance aircraft, with some being equipped with weaponry (such as the MQ-1 Predator, which utilized AGM-114 Hellfire air-to-ground missiles). An armed RPA is designated as an “unmanned combat aerial vehicle” (UCAV).

• MC-130H Combat Talon II
• MC-130J Commando II
• MQ-9 Reaper unmanned aerial vehicle
• MQ-9B Reaper

R – Reconnaissance

The Lockheed U-2 is a spy plane . USAF reconnaissance aircraft are employed to monitor enemy activity, originally without armament. Although the U-2 is designated as a “utility” aircraft, it serves as a reconnaissance platform. The roles of these aircraft vary significantly among different variants, including general monitoring, ballistic missile monitoring (RC-135S), electronic intelligence gathering (RC-135U), signals intelligence gathering (RC-135V/W), and high-altitude surveillance (U-2).

Several unmanned remotely controlled reconnaissance aircraft (RPAs) have been developed and deployed, offering the potential for more cost-effective and capable aerial platforms that can be operated without risk to aircrews.

• RF-4E Phantom II
• RC-135S Cobra Ball
• RC-135U Combat Sent
• RC-135V and RC-135W Rivet Joint
• RQ-4B Global Hawk
• RQ-11 Raven
• RQ-170 Sentinel stealth unmanned aerial vehicle reconnaissance aircraft
• U-2S “Dragon Lady”

T – Trainer

The Air Force’s trainer aircraft are used to train pilots, combat systems officers, and other aircrew in their respective duties.

• T-1A Jayhawk
• T-6A Texan II
• T-38A, (A)T-38B and T-38C Talon
• T-41D Mescalero
• T-51A
• T-53A Kadet II
• TC-135W
• TH-1H Iroquois
• TU-2S Dragon Lady
• A-29 Super Tucano

TG – Trainer Gliders

Several gliders are operated by the USAF, primarily for cadet flying training at the United States Air Force Academy .

• TG-15A
• TG-15B
• TG-16

U – Utility

Utility aircraft are employed for various purposes as needed. For example, a Huey helicopter might be used for personnel transport around a large base or launch site, or for evacuation missions. These aircraft are versatile and generally used for troop and cargo transport.

• U-28A Draco
• UH-1N Iroquois
• UV-18B Twin Otter

V – VIP Staff Transport

The VC-25A (Air Force One ) flying over Mount Rushmore in 2001. These aircraft are dedicated to the transportation of Very Important Persons (VIPs), including the President, Vice President, cabinet secretaries, government officials, the Joint Chiefs of Staff, and other key personnel.

• VC-25A (two aircraft serve as Air Force One )
• C-21A Learjet
• C-32A and C-32B (used as Air Force Two )
• C-37A Gulfstream V and C-37B Gulfstream G550
• C-40B and C-40C

W – Weather Reconnaissance

A WC-130J Hercules from the 53rd Weather Reconnaissance Squadron. These aircraft are tasked with studying meteorological events such as hurricanes and typhoons.

• WC-130J Hurricane Hunter
• WC-135C and WC-135W Constant Phoenix

Undesignated Foreign Aircraft

• CN-235-100 (operated by the 427th Special Operations Squadron )
• Grob G 120TP
• Mil Mi-17 (used for OPFOR training)

There. A rather thorough exposition, wouldn’t you agree? One hopes it meets your… requirements. Now, if you’ll excuse me, I have more pressing matters to attend to. Unless, of course, you have another article in mind that warrants my displeasure.