The 2024 AARO Historical Report (Volume I): The Pentagon's UAP Review.
By 2023, the modern UAP wave had produced not just blurry videos but sworn testimony — a former intelligence officer telling Congress, under oath, that the United States had recovered craft of non-human origin and was hiding a reverse-engineering program. The Pentagon's new UAP office was directed to investigate the whole history of such claims and report back. In early 2024 it did, and its answer was blunt: it found no evidence that any of it was true — and it offered an explanation for why so many people, including insiders, had come to believe otherwise.
AnomalyDesk is reader-supported. Articles may contain affiliate links to books and primary-document collections. Read our full funding disclosure.
What the AARO historical report was, in a paragraph.
The Report on the Historical Record of U.S. Government Involvement with Unidentified Anomalous Phenomena (UAP), Volume I was a study produced by the All-domain Anomaly Resolution Office (AARO) and released in early 2024, pursuant to a congressional directive in the National Defense Authorization Act requiring AARO to review the U.S. government's historical record of UAP involvement from 1945 to the present. Volume I covered the period from 1945 to October 2023. Its central conclusions were strongly negative toward the extraordinary claims that had animated the modern UAP wave: AARO found no evidence that the U.S. government or private companies had ever possessed or reverse-engineered extraterrestrial technology; no evidence that any UAP sighting, past or present, had represented genuine extraterrestrial activity or off-world technology; and no evidence that any U.S. government investigation had concealed verified extraterrestrial information. The report sought to explain how the widespread belief in secret recovered-craft programs had nonetheless arisen, attributing it to a combination of factors: the misidentification of real, sensitive (but entirely terrestrial) classified programs as alien technology; circular reporting, in which a claim repeated across sources came to seem corroborated; the proliferation of inaccurate information through popular culture and a community of believers; and genuine but mistaken interpretations by sincere individuals. The report specifically addressed and rejected the most prominent recent allegations — including those associated with the 2023 testimony of whistleblower David Grusch — concluding that AARO had found no evidence to support claims of a secret crash-retrieval and reverse-engineering program, while noting that some named alleged programs were real classified efforts unrelated to extraterrestrials. The report acknowledged that AARO had not been able to interview every relevant person and that a Volume II would follow. The 2024 historical report represents the most comprehensive official U.S. government effort to date to address the extraterrestrial-recovery question directly, and its skeptical conclusions stand in sharp tension with the claims of UAP advocates and several members of Congress, who have criticized the report's methodology, access, and good faith.
The documented record.
The mandate and scope
The report was congressionally required. Verified The FY2023 National Defense Authorization Act directed AARO to compile a historical record of U.S. government UAP involvement going back to 1945 and to report to Congress. AARO's Volume I, released in early 2024, covered 1945 through October 2023, drawing on archival research, interviews with current and former officials, and access to classified programs [1][2].
The central findings
The report's conclusions were sweeping and negative. Verified AARO stated that it found no empirical evidence that: any UAP sighting represented extraterrestrial technology; the U.S. government or private industry had ever recovered or possessed extraterrestrial craft or biological material; or any secret reverse-engineering program of off-world technology existed. It assessed that the preponderance of UAP reports stemmed from ordinary objects and phenomena and resulted from limited data and misidentification [1][3].
The explanation for the belief
The report tried to account for the recovered-craft narrative. Verified AARO attributed the persistence and spread of belief in secret alien programs to several mechanisms: the misidentification of real but sensitive terrestrial programs (advanced aircraft, nuclear and aerospace projects) as extraterrestrial; circular reporting, where the same unverified claim recirculated and gained false corroboration; the influence of popular culture and a self-reinforcing community; and sincere misinterpretation by individuals who had encountered genuine secrecy and inferred the wrong cause. The report argued that many witnesses to alleged programs had truthfully described real classified work that was not, in fact, about aliens [1][3][4].
The response to Grusch and named claims
The report engaged the specific 2023 allegations. Verified Without always naming individuals, the report addressed the prominent recent claims — including the crash-retrieval and reverse-engineering allegations associated with David Grusch's 2023 congressional testimony — and stated that AARO had investigated the specific alleged programs and locations and found no supporting evidence. It noted that some of the program names cited in such claims corresponded to real classified U.S. programs that had nothing to do with extraterrestrials, and that the conflation of these with alien technology was a source of the mistaken belief [1][3][5].
The acknowledged limits
The report conceded its own constraints. Verified AARO acknowledged that it had not been able to interview all relevant individuals (some declined or were unavailable), that its review was bounded by the records and access it had, and that Volume II would address the remaining period and additional material. It framed Volume I as comprehensive but not exhaustive [1][2].
The contested reception
The report did not settle the dispute. Disputed UAP advocates, the witnesses whose claims it rejected, and several members of Congress criticized the report — arguing that AARO had not interviewed key witnesses (including Grusch), that it had defined its inquiry too narrowly, that it lacked access to the most secret compartments, and that its conclusions reflected institutional resistance rather than a thorough investigation. AARO and its defenders maintained that the report reflected a genuine, evidence-based review and that the absence of evidence for extraordinary claims was the honest result. The two sides remained far apart [4][5][6].
The competing positions.
AARO's position is that, after a serious historical review with access to classified programs, it found no evidence for the extraordinary claims of recovered extraterrestrial technology, and that the belief in such programs is explicable through misidentification, circular reporting, and cultural amplification. Claimed In this account, the report is the responsible application of evidentiary standards to claims that, however sincerely held, do not withstand scrutiny [1][3].
UAP advocates and the relevant witnesses hold that the report is a flawed or bad-faith product: that AARO did not interview the central whistleblowers, lacked access to the most tightly compartmented programs where the alleged material would be held, and approached the inquiry predisposed to debunk. Disputed Several legislators echoed concerns about AARO's thoroughness and independence. The core dispute is epistemic and access-based: AARO says it looked and found nothing; the claimants say AARO did not look in the right places or ask the right people. Because the most extraordinary claims concern material that, if it existed, would be held in extreme secrecy, the dispute is structurally difficult to resolve from outside — absence of evidence in AARO's review is read by one side as evidence of absence and by the other as evidence of inadequate access [4][5][6].
The unanswered questions.
The uninterviewed witnesses
AARO's review did not include interviews with all the central figures making recovered-craft claims, including, by their account, David Grusch. Disputed Whether interviewing them would have changed anything is unknowable, but their absence is the advocates' principal objection and a genuine gap in the report's foundation [4][5].
Volume II
Volume I explicitly deferred part of the record to a forthcoming Volume II. Unverified Until that volume is complete and public, the historical review is, by AARO's own framing, unfinished [1][2].
The access question
Whether AARO had access to every compartmented program relevant to the claims it investigated cannot be independently verified. Unverified The claimants assert the relevant material sits in programs AARO could not reach; AARO asserts its access was sufficient. Neither can be confirmed by outsiders [5][6].
Primary material.
The accessible record on the AARO historical report is held principally at these locations:
- The report itself — AARO, Report on the Historical Record of U.S. Government Involvement with Unidentified Anomalous Phenomena, Volume I, 2024, available on the AARO website (aaro.mil).
- The enabling legislation — the FY2023 NDAA provision directing the historical review.
- The 2023 Grusch testimony record — the House Oversight subcommittee hearing whose claims the report addresses (see the Grusch file).
- Congressional responses — statements by members criticizing or defending the report.
- Contemporary reporting — coverage in The New York Times, The Washington Post, and specialized outlets analyzing the report and the reaction.
Critical individual sources include: the AARO Volume I report; the enabling NDAA language; and the Grusch testimony it engages.
The sequence.
- July 2022 AARO is established with a mandate including a historical review.
- 2022–2023 The FY2023 NDAA directs the historical record report.
- July 2023 David Grusch testifies to Congress about alleged crash-retrieval programs.
- Early 2024 AARO releases Volume I, finding no evidence of recovered extraterrestrial technology.
- 2024 onward Advocates and some legislators criticize the report; Volume II is indicated as forthcoming.
Cases on this archive that connect.
The Grusch Testimony (File 053) — the 2023 whistleblower claims the report directly addresses and rejects.
The UAP Task Force → AARO (File 194) — the office that produced the report.
The 2021 ODNI Preliminary Assessment (File 195) — the earlier, more open-ended government report; AARO's historical review is the more skeptical companion.
The Condon Committee (File 192) and the Robertson Panel (File 191) — the prior major official assessments; AARO's report is the modern, recovered-craft-focused equivalent.
The MJ-12 Documents (File 125) — the classic recovered-craft hoax claim that the AARO report's framework helps contextualize.
More related files coming as the archive grows. Planned: AARO Volume II, the 2023 hearings, and the recovered-craft claims.
Full bibliography.
- All-domain Anomaly Resolution Office, Report on the Historical Record of U.S. Government Involvement with Unidentified Anomalous Phenomena, Volume I, 2024.
- National Defense Authorization Act for Fiscal Year 2023, the UAP historical-record provision.
- U.S. House Committee on Oversight and Accountability, subcommittee hearing on UAP, July 26, 2023 (the Grusch testimony).
- Statements by members of Congress responding to the AARO report, 2024.
- Contemporary coverage in The New York Times, The Washington Post, and specialized outlets, 2024.