Overview
In July 2022, the Department of Defense transformed its short-lived Airborne Object Identification and Management Synchronization Group (AOIMSG) into the All-domain Anomaly Resolution Office (AARO). Deputy Secretary of Defense Kathleen Hicks signed the establishment memorandum on 15 July 2022; the Department publicly announced the office on 20 July and named physicist and intelligence official Dr Sean M. Kirkpatrick as its director. Department of Defense — AARO establishment announcement Deputy Secretary of Defense — AARO establishment memorandum
AARO's creation represented more than a change of name.
AOIMSG had been designed principally around identifying and managing airborne objects in or near military Special Use Airspace. Congress had meanwhile enacted a substantially broader statutory framework in section 1683 of the FY2022 National Defense Authorization Act. That law required an office able to standardise UAP reporting across the Department of Defense and Intelligence Community, coordinate field investigations, conduct scientific and technical analysis, obtain UAP data from across government, work with outside experts, develop an intelligence collection plan and create a science plan capable of testing claims of apparently advanced performance. Public Law 117-81, §1683
The July memorandum explicitly says that AARO was created by renaming and expanding the AOIMSG structure in order to meet those broader congressional requirements. It also directed the Navy to disestablish the Unidentified Aerial Phenomena Task Force and transfer its data, analyses and other relevant material to the new office. AARO establishment memorandum
This makes AARO historically distinct from both of its immediate predecessors.
The UAP Task Force had built the modern military reporting and case-analysis foundation.
AOIMSG attempted to create Department-level coordination around airborne objects.
AARO was intended to become a more durable, multi-domain and congressionally supervised organisation with explicit scientific, intelligence and reporting functions.
The office should nevertheless not be treated as fully mature from the day it was announced. Its early public record shows continuing work on staffing, reporting architecture, data standards, interagency relationships, scientific methodology and access to classified programmes. The Department of Defense Inspector General later found that DoD as a whole still lacked a comprehensive and coordinated UAP approach during the early AARO period. DoD Inspector General — Evaluation of DoD Actions Regarding UAP
AARO's establishment was therefore a major institutional step, but not the completion of the system Congress had envisioned.
Mandate and design
Statutory background
The statutory office was created before the Department publicly used the name AARO.
The FY2022 NDAA became law on 27 December 2021. Section 1683 required the Secretary of Defense, in coordination with the Director of National Intelligence, to establish an office to carry out the UAP Task Force mission and a broader set of duties. Public Law 117-81, §1683
The legislation did not originally designate the office as AARO. Instead, it specified functions.
Those functions included synchronising and standardising collection, reporting and analysis; maintaining a central repository; evaluating links to foreign governments and non-state actors; assessing threats; coordinating with agencies such as FAA, NASA, DHS, NOAA and DOE; arranging rapid field investigation; designating organisations for scientific, technical and operational analysis; and developing both intelligence and science plans.
This is an important distinction because later descriptions sometimes imply that Congress directly created AARO in July 2022. Congress created the statutory requirement and authorities for an office. The Department then implemented those requirements by expanding and renaming AOIMSG as AARO.
The office's present legal identity became clearer later, when Congress amended the statute in the FY2023 Intelligence Authorization Act to name the All-domain Anomaly Resolution Office explicitly and to strengthen its governance and historical-review responsibilities. 50 U.S.C. §3373
The distinction matters because AARO's institutional design developed in stages rather than arriving fully formed in July.
AOIMSG transition
AOIMSG had existed for less than eight months when Hicks replaced it.
The November 2021 organisation had been given a Department-wide synchronisation role, but its original mission remained closely tied to detecting, identifying and attributing objects of interest in Special Use Airspace. It also focused on mitigation of flight-safety and national-security risks.
Congress's FY2022 framework was broader. The statute contemplated rapid field response, material testing, medical studies, theoretical modelling, intelligence collection and scientific investigation of performance claims that might exceed the known state of the art. The July 2022 DoD announcement says directly that the NDAA imposed responsibilities broader than those originally assigned to AOIMSG. DoD — establishment of AARO This is the clearest reason AARO should not be described as a simple rebranding exercise. The name change accompanied an expansion in mission. It also reflected a change in the underlying object of study. The new office was no longer limited to an “airborne” framing.
All-domain remit
The establishment memorandum states that AARO's mission included anomalous, unidentified space, airborne, submerged and transmedium objects.
The public announcement likewise described the office as responsible for objects in, on or near military installations, operating areas, training areas, Special Use Airspace and other areas of interest, including anomalous objects across multiple domains. AARO establishment memorandum
This broadened the operational frame substantially. A report involving an object in space could potentially enter the system. A submerged object could potentially enter the system. An observation apparently transitioning between air and water, or between space and atmosphere, could potentially enter the system. The term transmedium should nevertheless be treated as a reporting category rather than evidence that a vehicle has been scientifically demonstrated to move between media in an extraordinary way. Current 50 U.S.C. §3373 defines a transmedium object or device as one observed to transition between space and atmosphere or between atmosphere and bodies of water and not immediately identifiable. 50 U.S.C. §3373 The statutory language therefore preserves the observation without prejudging the physical explanation.
An apparent transition can later prove to involve multiple objects, sensor effects or conventional systems. The value of the all-domain framework is that such reports are not excluded before investigation.
Lines of effort
The July public announcement identified six principal lines of effort for AARO: surveillance, collection and reporting; system capabilities and design; intelligence operations and analysis; mitigation and defeat; governance; and science and technology. DoD — AARO establishment announcement This structure is revealing. Only part of the office's mission was conventional case analysis. AARO was also supposed to influence sensor design, reporting systems, intelligence collection, operational response and scientific methodology. That breadth helps explain why evaluating AARO solely by the number of publicly “solved” UFO cases can be misleading. A large part of the office's purpose is infrastructural.
If military sensors repeatedly record ambiguous objects, an effective programme needs to ask not only what those objects were but whether the sensor architecture and reporting process can be improved so that future events are less ambiguous.
Likewise, if an object ultimately proves to be an adversarial drone, the case may be a UAP resolution but still require operational mitigation. The office therefore operates at the intersection of identification, intelligence, science and force protection. Those functions can reinforce one another, but they can also create different priorities.
Science requirement
Congress's 2021 statute contained one of the most unusual provisions in the history of government UFO investigation: a dedicated science plan.
The head of the office was required to develop and execute scientific theories capable of accounting for reported characteristics and performance that appeared to exceed the known state of the art in areas including propulsion, aerodynamic control, signatures, structures, materials, sensors, countermeasures, weapons, electronics and power generation. The plan was also intended to provide a foundation for future efforts to replicate or better understand such characteristics if they proved real. Public Law 117-81, §1683
This language is significant but easy to overstate. Congress was not declaring that such performance had been verified. It was instructing the office to create a method capable of testing reports if apparently advanced characteristics survived analysis. That conditional structure is important.
AARO's later public work has repeatedly distinguished apparent anomaly from validated performance. In April 2023, Kirkpatrick told the Senate that only a small percentage of reports displayed signatures that could reasonably be described as anomalous and that many unresolved cases remained unresolved principally because the available data were inadequate. Senate Armed Services Subcommittee — AARO hearing, 19 April 2023
The statutory science plan therefore establishes the seriousness of the question without establishing the answer.
Field investigation
The statute also contemplated capabilities beyond desk-based review.
The Secretary of Defense and Director of National Intelligence were directed to designate organisations capable of rapid response and field investigation. Separate line organisations were to be responsible for scientific, technological and operational analysis of UAP data, including material testing, medical studies and theoretical modelling. 50 U.S.C. §3373
These provisions matter because they address one of the recurring weaknesses of historical UFO investigation. Many reports are examined long after the event, when physical traces, weather information, sensor configuration and witness detail may already be lost. Rapid investigation potentially allows an office to preserve evidence before that degradation occurs. The material-testing authority likewise creates a route for extraordinary material claims to become scientific questions rather than testimonial ones.
The later Oak Ridge National Laboratory analysis of a magnesium-zinc-bismuth specimen illustrates how this model can work. A specific material claim was supplied for analysis, subjected to laboratory techniques and assessed against an extraordinary proposed function. The result weighed against the extraordinary interpretation of that specimen while also identifying chain-of-custody limitations. AARO — ORNL metallic specimen synopsis
The importance of AARO's scientific authority therefore lies partly in converting broad claims into testable propositions.
Data access
A government UAP office cannot meaningfully investigate classified observations if the relevant agencies are free to keep their data isolated. Congress addressed this directly.
The original FY2022 statute required Intelligence Community elements holding UAP-related information to make it available immediately to the office or an authorised receiving entity. It also required reporting procedures for military, civilian and contractor personnel.
Later amendments strengthened and clarified the access framework. The current statute requires the Director of National Intelligence and Secretary of Defense to ensure that relevant Intelligence Community elements and DoD components make UAP data immediately available to AARO while protecting sources and methods. 50 U.S.C. §3373
This is a substantial authority in principle. Its practical effectiveness depends upon implementation. A legal obligation to share data does not guarantee that every historical record has been identified, that every command uses the same terminology, or that information reaches AARO quickly enough to preserve evidential value. The Department's later Inspector General findings show that these organisational problems were real.
UAP Task Force transfer
The July memorandum did not leave the predecessor organisations operating indefinitely in parallel. Hicks directed the Secretary of the Navy to disestablish the UAP Task Force no later than the date AARO was established and to transfer its data, analysis and relevant material to the new office. AARO establishment memorandum This transfer is historically important. AARO inherited the case inventory and reporting experience that had produced the 2021 ODNI Preliminary Assessment. It therefore did not begin with zero reports in July 2022. The office inherited an existing analytical burden at the same time as Congress expanded its responsibilities. This helps explain why later public case totals should not be interpreted as cases discovered solely by AARO.
The office's holdings combine inherited Task Force reports, later military submissions, retrospective reports, civilian aviation material and other records entering the system at different times.
Implementation
Initial leadership
On 20 July, DoD identified Sean Kirkpatrick as the first AARO Director.
Kirkpatrick had held scientific and intelligence positions across the Defense Intelligence Agency, National Security Council, U.S. Strategic Command and other organisations. The Department's official biography described expertise in physics and intelligence analysis and noted that he had been asked to stand up the office earlier in 2022. DoD — Sean Kirkpatrick biography
The choice reflected AARO's hybrid mission. The director needed to work inside classified intelligence systems while also developing a scientific analytical framework. That combination is unusual. A purely scientific office might optimise for open publication and reproducibility. An intelligence organisation must protect sources, methods, operational capabilities and foreign intelligence. AARO was required to do both. Many later transparency disputes arise from this structural tension rather than from one isolated policy decision.
December 2022 changes
AARO's statutory architecture changed substantially only five months after the July announcement.
The FY2023 Intelligence Authorization Act, enacted within Public Law 117-263 on 23 December 2022, amended section 1683 and formally designated the office as the All-domain Anomaly Resolution Office. It also changed reporting lines and added major new responsibilities. 50 U.S.C. §3373 — amendment history
Under the amended structure, the AARO Director was to be appointed by the Secretary of Defense in consultation with the DNI, while a Deputy Director would be appointed by the DNI in coordination with the Secretary.
Operational and security reporting was elevated directly to the Deputy Secretary of Defense and the Principal Deputy Director of National Intelligence, with administrative matters remaining under the Under Secretary of Defense for Intelligence and Security.
This is a significant governance change. AARO was administratively housed within OUSD(I&S), but Congress gave its director a direct operational reporting route to more senior defence and intelligence leadership. That structure suggests concern that a UAP office operating only through normal departmental layers might struggle to obtain cross-programme cooperation or visibility.
Historical record
The December 2022 amendments also transformed AARO into a historical-investigation office.
Congress required a report covering U.S. government involvement with UAP from 1 January 1945 onward. The mandated source base included Intelligence Community records, oral-history interviews, open-source material, current and former officials, classified and unclassified National Archives records and other relevant historical sources. 50 U.S.C. §3373(j)
The requirement went beyond compiling old sightings. Congress specifically required consideration of restricted-access programmes not clearly reported to Congress and any efforts to obfuscate, manipulate public opinion, hide or provide incorrect information concerning UAP. This expansion materially changed the office's mission. AARO was no longer only analysing contemporary observations. It was being asked to investigate allegations concerning the government itself.
The secure historical-reporting mechanism launched in 2023 was part of this effort, allowing current and former government personnel or contractors with direct knowledge of UAP-related programmes to contact AARO. AARO — U.S. Government UAP-Related Program/Activity Report User Guide
The resulting Historical Record Report Volume I was published in March 2024 and is treated separately in the UAPRAD timeline.
Classification
The amended statute also strengthened the importance of AARO's ability to receive highly restricted information.
AARO's later user guide states that the office may receive UAP-related information at any classification level, including material subject to restrictive access controls, Special Access Programs and compartmented programmes. AARO — Program Report User Guide
This authority is central to one of the core questions surrounding the office. If a UAP report corresponds to a classified U.S. programme, investigators need enough access to deconflict the observation without revealing that programme to the original observer. If allegations concern an improperly hidden programme, investigators also need the authority to pursue access rather than simply querying ordinary databases. Authority does not guarantee success. A programme operating illegally outside normal reporting structures could theoretically be difficult to identify. Historical records may be incomplete. Classification may restrict what can later be explained publicly. The office's legal access therefore strengthens its investigative position without making every negative finding independently reproducible.
This is the same evidential tension later visible in AARO's Historical Record Report.
Operational maturity
The April 2023 Senate hearing provides the best public snapshot of AARO's early operational maturity.
Kirkpatrick told the Senate Armed Services Subcommittee on Emerging Threats and Capabilities that AARO was examining roughly 650 cases and had prioritised a subset for closer analysis. He also described efforts to standardise data collection, develop analytical methods and improve sensor information. Senate Armed Services Committee — 19 April 2023 hearing
The hearing demonstrated that AARO was functioning. It also demonstrated that the office was still building fundamental parts of its architecture. Kirkpatrick emphasised limited data as a dominant reason many cases remained unresolved and described continuing work with agencies and military organisations to obtain better observations. This is an important qualification to the phrase “AARO established.” A government office can exist formally before it reaches full operating capability. The July 2022 event created the organisation and authorities. The following years involved constructing the system those authorities required.
Mission brief
AARO's July 2023 mission brief provides a useful internal roadmap.
Its stated goals included formalising the organisational design, staffing the office to full operating capability, establishing Department and Intelligence Community UAP policies, developing a dedicated budget structure, standardising reporting, integrating multi-source data, improving deconfliction with U.S. government programmes, creating a searchable UAP database, defining anomalous thresholds for each domain, instituting peer review and calibrating military and intelligence sensors. AARO — 2023 Mission Brief
The breadth is striking. Many of these items were not case resolutions; they were prerequisites for reliable case resolution. The brief also shows that AARO intended to institutionalise scientific peer review and intelligence-tradecraft standards rather than rely upon informal assessment. Again, the presence of the goal does not prove complete implementation. It documents what the office recognised it needed to build.
Inspector General context
The strongest independent institutional criticism came from the Department of Defense Inspector General. A classified evaluation was issued in August 2023; an unclassified summary followed in January 2024.
The Inspector General concluded that DoD did not have a comprehensive, coordinated approach to addressing UAP. Components had developed varying processes for collection, analysis and identification, and the Department lacked an overarching policy integrating roles, responsibilities and coordination procedures. DoD Inspector General — UAP evaluation
This is significant because coordination was one of the central reasons AARO had been created. The finding should be interpreted carefully.
The OIG report reviewed the Department's broader UAP actions, not only the performance of AARO as an isolated organisation. Many of the weaknesses originated before AARO existed or depended upon military components outside its direct control.
The report therefore does not establish that the office itself was ineffective. It does demonstrate that creating AARO had not yet solved the Department-wide governance problem. The Inspector General made eleven recommendations involving OUSD(I&S), AARO, the military departments and the Joint Staff. This reinforces the interpretation of July 2022 as the beginning of institutional reconstruction rather than its end.
Public transparency
The original July announcement did not create a public case portal. AARO's public-facing infrastructure developed more gradually.
On 31 August 2023, the Department launched AARO.mil, describing it as a public repository for information about the office, official reports, reporting trends and declassified case imagery. Department of Defense — AARO website launch
The historical programme-reporting mechanism followed later that year. Public case-resolution reports, mission reports and imagery expanded substantially after 2024 and especially during 2025-26. This matters when evaluating early criticism that AARO was insufficiently transparent. The criticism may be reasonable as a judgement of the public record available at a particular time. It should not be projected backward or forward without date context. AARO's public transparency architecture in August 2026 is materially different from what existed when the office was announced.
Leadership changes
Kirkpatrick served as the first director until his departure in December 2023. Tim Phillips then served as acting director during the period in which AARO completed and released the first Historical Record Report.
On 26 August 2024, the Department announced Dr Jon T. Kosloski as the new director. Kosloski came from the National Security Agency's Research Directorate and has technical experience in optics, computing and signal-related research. AARO — current leadership biography AARO — Congressional/Press Products
Leadership changes matter because AARO's public posture and analytical tools continued to develop under each period. They should not be interpreted as evidence that the underlying mission changed entirely. The statutory office, its reporting requirements and core functions continued.
Casework and limits
Later casework
By August 2026, AARO's public reporting trends show hundreds of closed cases attributed to ordinary phenomena.
The office's current public trend data, covering reports from 1996 through 15 August 2026, list balloons and satellites as the dominant closed-case outcomes, followed by UAS, birds, aircraft and smaller numbers of missiles/rockets, jetpacks, atmospheric phenomena, sensor artefacts and other categories. AARO — UAP Reporting Trends
This later evidence is relevant to the 2022 establishment because it demonstrates one intended function of the office: building enough analytic capacity to move cases out of the unidentified category when sufficient contextual data exist.
It should not be used to infer that every unresolved case is therefore conventional. AARO's own FAQ states that no single explanation accounts for the majority of UAP reports and that many remain unidentified simply because sensors did not collect enough information for positive attribution. AARO — FAQ Current trend statistics also reflect the reports that entered AARO's system and the cases that have been closed. They are not a random sample of every unusual observation in the environment. This distinction is necessary before percentages are interpreted as properties of UAP generally.
Case inventory
AARO inherited a comparatively small modern government case catalogue and rapidly accumulated more reports.
The FY2023 report added 291 submissions and showed that the space and maritime domains were still only beginning to be integrated into AARO's processes. Of the 291 reports in that reporting period, 290 were airborne. AARO / ODNI — FY2023 Consolidated Annual Report
This is important because the word all-domain initially described jurisdiction more clearly than it described the composition of the data. AARO was authorised to investigate across domains. Its actual early case inventory remained overwhelmingly airborne. The FY2024 report recorded 757 additional reports and brought the office's total holdings above 1,600 cases by June 2024. DoD — FY2024 UAP Annual Report release
The FY2025 report records 1,870 case holdings as of 30 May 2025, with 319 reports received during its reporting period and 370 cases resolved during that period when earlier cases are included. AARO attributed all of those resolutions to prosaic objects or activities. It simultaneously identified nine reports for further technical analysis and placed many data-poor cases into an active archive. AARO — FY2025 Consolidated Annual Report
This later record suggests that the institutional architecture created in 2022 has become substantially more operational. It also shows that one foundational limitation remains: missing or inadequate sensor data.
Resolution
The establishment of a dedicated resolution office can encourage a simple binary view of cases: resolved or unresolved. AARO's later work is more nuanced. A high-confidence resolution may identify a specific conventional phenomenon through sensor geometry, flight data or three-dimensional modelling. Other cases remain unresolved because the available information is insufficient, not because analysts have established that the object behaved extraordinarily. AARO also publishes some cases in which it can state that an object exhibited no anomalous behaviour while being unable to identify the exact object. This is a useful evidential category.
For example, the Middle East Object video shown during Kirkpatrick's 2023 Senate testimony was assessed as not displaying anomalous behaviour while remaining unidentified because contextual data were limited. Department of Defense — Middle East Object
That distinction reflects the analytical model AARO was created to develop. An investigation can constrain what a case was not observed to do without necessarily determining exactly what the object was. This is more informative than forcing every case into either “solved” or “mystery.”
National-security mission
The strongest public interest in AARO often concerns extraterrestrial or non-human technology. That is not how the office's formal mission is framed. The July 2022 memorandum described the purpose in terms of detecting, identifying and attributing objects of interest and mitigating threats to safety of operations and national security.
AARO's current mission statement similarly focuses on minimising technical and intelligence surprise through scientific, intelligence and operational detection, identification, attribution and mitigation near national-security areas. OUSD(I&S) — Direct Report Offices
An extraterrestrial hypothesis is not excluded from investigation where evidence might support it. It is not the organisational premise. This distinction explains why many AARO resolutions concern drones, balloons and satellites. An unknown drone near a sensitive installation can matter greatly to national security even if it is entirely conventional technology. AARO therefore has a reason to exist independent of whether any UAP ultimately prove extraordinary.
Claimant testing
The later expansion of AARO into historical programme allegations changed public expectations dramatically.
The 2023 reporting mechanism invited current and former government personnel with direct knowledge of UAP-related programmes dating to 1945 to contact the office. Congress also gave AARO access to National Archives material and required examination of alleged hidden programmes and information manipulation. 50 U.S.C. §3373
This created a mission distinct from ordinary case resolution. AARO might analyse a video of a balloon in one part of the organisation while another team interviews a former official alleging a decades-old retrieval programme. Those are different evidential tasks. The first may be solved with geometry and sensor analysis. The second may require archival records, programme access, contracting history and witness dependency analysis. Treating every AARO product as though it belongs to one uniform investigative method therefore understates the breadth of the office.
External scrutiny
AARO has access advantages unavailable to most independent researchers. It can work with classified military systems, Intelligence Community organisations and Special Access Program oversight structures. That access can substantially improve attribution. It also creates a transparency problem. The public cannot independently inspect many of the same records. AARO's conclusions therefore carry different evidential weight depending upon how much supporting material can be released. A case resolution accompanied by imagery, geometry and a clear analytical method is comparatively reproducible. A conclusion based primarily upon classified programme records may be well founded but less publicly auditable. This does not justify dismissing classified analysis automatically.
It does justify distinguishing institutional access from publicly reproducible evidence. The office's historical significance will partly depend upon how effectively it continues converting the former into the latter without compromising legitimate national-security information.
Historical significance
AARO marks the transition from the temporary UAP structures of 2017-21 into an enduring federal institutional framework. The UAP Task Force had demonstrated the reporting problem. AOIMSG attempted to centralise the Department's response. AARO added a broader statutory mission and became the organisation through which Congress increasingly channelled scientific analysis, intelligence access, historical investigation and recurring reporting requirements. This changed the nature of official UAP research. The question was no longer simply whether the Department possessed unexplained reports.
Congress had created an office expected to explain why they remained unexplained, collect better evidence, test extraordinary performance claims where possible and examine allegations that information had been improperly hidden from oversight.
That is a much more demanding standard. The office's development since 2022 shows both the value and difficulty of the model. Case resolution has improved where sufficient data exist. Public access to reports and imagery has expanded. Historical programme allegations have received formal government investigation. But data quality, classification, interagency coordination and public reproducibility remain persistent constraints. AARO should therefore be understood as an evolving institution rather than the endpoint of the modern disclosure process. Its creation provided the authorities and organisational structure required for a more rigorous programme.
Whether those structures ultimately produce a scientifically persuasive account of the strongest unresolved cases remains a question for the evidence the office can collect, analyse and make available.
Evidence assessment
AARO's establishment in July 2022 was the most substantial reorganisation of the U.S. government's modern UAP effort up to that point. The change was real.
AARO replaced AOIMSG, absorbed the UAP Task Force's data and responsibilities, expanded the mission beyond Special Use Airspace and established an explicit all-domain remit. Its six lines of effort incorporated surveillance, intelligence analysis, mitigation, governance and science and technology rather than limiting the organisation to collecting sighting reports.
Congress's statutory framework was even more consequential.
The office was expected to conduct or coordinate field investigations, material testing, medical studies, scientific modelling, intelligence collection and international cooperation. Later amendments created stronger reporting lines, an historical investigation back to 1945 and a protected mechanism for current and former government personnel to report alleged UAP-related programmes.
These authorities make AARO institutionally different from Project Blue Book. They do not by themselves establish the quality of implementation.
The early record shows that implementation was incomplete. The 2023 mission brief still described many foundational organisational, reporting and scientific capabilities as goals under construction. The Department of Defense Inspector General subsequently found that DoD components continued to use inconsistent UAP processes and that the Department lacked an overarching coordinated policy.
Those findings do not negate the creation of AARO. They demonstrate that a central office cannot instantly standardise a large defence and intelligence bureaucracy. Later reporting shows substantial progress.
AARO now maintains a much larger case inventory, publishes resolution reports and mission material, operates public and authorised reporting mechanisms, conducts historical research, uses three-dimensional modelling and provides public trend data. Hundreds of closed cases have been attributed to balloons, satellites, drones, aircraft, birds and other conventional sources.
At the same time, AARO continues to report that insufficient timely sensor data prevent confident resolution of many observations. This persistence is important. The office's greatest long-term contribution may not be the number of cases it labels as resolved, but whether it succeeds in changing how future evidence is collected so that fewer cases become permanently indeterminate. The current public record also does not justify treating AARO as either an infallible scientific authority or a purely dismissive debunking office. Its statutory mission requires genuine investigation of apparently advanced phenomena. Its national-security mission requires aggressive consideration of conventional and adversarial explanations. Its historical mission requires investigation of allegations about government secrecy.
Its public mission requires releasing enough information for findings to carry credibility outside classified channels. Those functions can create tension. The July 2022 establishment is historically significant precisely because the government attempted to place all of them within one organisation.
Source library
Department of Defense — DoD Announces the Establishment of the All-domain Anomaly Resolution Office, 20 July 2022
The principal public announcement. Establishes that Hicks had amended the earlier AOIMSG direction on 15 July, expanded the organisation to meet the broader FY2022 NDAA requirements, named Sean Kirkpatrick as director and identified the six initial lines of effort.
Read the Department of Defense announcement
Deputy Secretary of Defense Kathleen Hicks — Establishment of the All-domain Anomaly Resolution Office, 15 July 2022
The controlling establishment memorandum. It formally directs creation of AARO, defines the expanded all-domain mission, renames the AOIMSG Executive Council and orders the UAP Task Force to be disestablished with its data and analyses transferred to AARO.
Read the official establishment memorandum
Public Law 117-81 — National Defense Authorization Act for Fiscal Year 2022, §1683
The original congressional mandate for the successor UAP office. It defines reporting standardisation, field investigation, scientific and technical analysis, data access, intelligence collection and the science plan that AARO was created to implement.
Read Public Law 117-81
50 U.S.C. §3373 — Establishment of the All-domain Anomaly Resolution Office
The current codified statutory framework, incorporating later amendments. Particularly important for AARO's direct reporting lines, historical-record requirement, annual reports, semiannual briefings, data access, field investigation, science plan and current definitions of UAP and transmedium objects.
Read the current statute
Department of Defense — Dr Sean M. Kirkpatrick biography
Primary institutional source for the first director's professional background and role in standing up the office.
Read Kirkpatrick's official biography
Senate Armed Services Subcommittee on Emerging Threats and Capabilities — AARO hearing, 19 April 2023
Primary congressional oversight record from AARO's first year. Kirkpatrick discussed the office's mission, roughly 650-case holdings, data-quality problems, scientific approach and examples of public case analysis.
View the official Senate hearing page
AARO — 2023 Mission Brief
Important early implementation document showing that full staffing, UAP policies, standardised reporting, searchable databases, scientific peer review, sensor calibration and multi-source integration were still active organisational goals approximately one year after establishment.
Read the AARO 2023 Mission Brief
Department of Defense Inspector General — Evaluation of the DoD's Actions Regarding Unidentified Anomalous Phenomena
The strongest independent government oversight of early DoD/AARO implementation. The Inspector General found that DoD components continued to use varying processes and that the Department lacked a comprehensive, coordinated UAP approach. The finding concerns the wider Department and should not be reduced to a simple verdict on AARO alone.
Read the DoD Inspector General summary
Department of Defense — Launch of AARO.mil, 31 August 2023
Primary source documenting the later creation of AARO's public information infrastructure, including case imagery, reporting trends, reports and the planned authorised historical reporting mechanism.
Read the AARO website launch announcement
AARO — U.S. Government UAP-Related Program/Activity Report User Guide
Primary documentation for AARO's authorised historical reporting mechanism. It states that the office may receive UAP-related information at any classification level and from restrictive or compartmented programmes, while requiring submitters to begin with unclassified summary information.
Read the AARO reporting guide
AARO / ODNI — FY2023 Consolidated Annual Report on UAP
Important for assessing how the “all-domain” mission translated into the early case inventory. Of 291 reports in the reporting period, 290 were airborne, and the report states that integration of the maritime and space domains remained ongoing work.
Read the FY2023 Annual Report
Department of Defense — FY2024 Consolidated Annual Report release
Primary source showing the expansion of AARO's case inventory to more than 1,600 reports by June 2024 and its increasing role in formal case resolution.
Read the FY2024 release
AARO — Fiscal Year 2025 Consolidated Annual Report on UAP
The most recent annual report available at the review date. It records 1,870 case holdings as of 30 May 2025, 370 cases resolved during the reporting period including earlier cases, nine reports referred for further technical analysis and continuing limitations caused by insufficient timely sensor data.
Read the FY2025 Annual Report
AARO — UAP Reporting Trends
Current public trend data for the office's case holdings. As of the August 2026 update, closed cases are dominated by balloons and satellites, with additional resolutions involving UAS, birds, aircraft and other conventional categories. The data describe AARO's reported and closed-case population rather than a random sample of all UAP observations.
View current AARO reporting trends
AARO — Frequently Asked Questions
Current public explanation of AARO's reporting system and analytical position. Particularly relevant to the distinction between unresolved cases and extraordinary phenomena: AARO states that many observations remain unidentified because sensors did not collect enough information to make a positive attribution.
Read AARO's current FAQ
Office of the Under Secretary of Defense for Intelligence and Security — Direct Report Offices
Current institutional description of AARO's mission as minimising technical and intelligence surprise through scientific, intelligence and operational detection, identification, attribution and mitigation of UAP near areas of national-security interest.
View the current OUSD(I&S) description of AARO
AARO — current leadership
Official current biography of Director Dr Jon T. Kosloski, who was appointed in 2024 after Sean Kirkpatrick's departure and Tim Phillips's period as acting director.
View AARO's current leadership
Research category: Government programme / institutional restructuring
Formal establishment memorandum: 15 July 2022
Public announcement: 20 July 2022
First director: Dr Sean M. Kirkpatrick
Current director at review date: Dr Jon T. Kosloski
Predecessor structures: UAP Task Force and AOIMSG
Primary legal foundation: FY2022 NDAA §1683, subsequently substantially amended and codified at 50 U.S.C. §3373
Review date: Evidence assessed through 26 August 2026
Research status: Active — AARO remains the principal U.S. government office for coordinating UAP detection, reporting, analysis, historical investigation and resolution.