Post-2017 UAP incidents
The Pentagon confirmed in 2017 that it had been studying unidentified objects encountered by military aircraft, and released the videos. A minority of cases remain genuinely unexplained. The separate claim that the US holds crashed alien vehicles has been investigated and found unsupported.
Why this verdict
Unresolved as to what a residual set of military sensor observations actually shows. Resolved, in the government's own words, on the further claim of recovered extraterrestrial craft: no verifiable evidence supports it.
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- Sources
01The claim
Two claims, which must be separated. The narrow one: military sensors have repeatedly recorded objects whose flight characteristics are not explained by known aircraft, weather phenomena or sensor artefacts, and the government studied them while publicly denying it. The broad one: the United States has recovered non-human craft and has run a concealed retrieval and reverse-engineering programme for decades.
02Where it came from
In December 2017 the New York Times and Politico reported the existence of the Advanced Aerospace Threat Identification Program, a Pentagon effort funded from 2007 with money directed by Senator Harry Reid. The reporting was accompanied by three gun-camera videos — later designated FLIR1, GIMBAL and GOFAST — which the Department of Defense formally acknowledged as genuine in April 2020. The 2004 USS Nimitz encounter, with corroborating radar operators and pilots on the record, is the anchor case.
03What the record shows
? UNRESOLVED — A real open question. Credible sources disagree.
On the narrow claim, the government's own reporting is the best source. The 2021 ODNI preliminary assessment examined 144 reports from 2004–2021 and could explain exactly one. Subsequent annual reports from the All-domain Anomaly Resolution Office cover several hundred additional cases and resolve most as balloons, drones, aerial clutter or sensor artefacts, while leaving a residue uncharacterised — typically because the sensor data is insufficient rather than because it shows something impossible. Independent analyses of GIMBAL and GOFAST have offered plausible mundane readings involving parallax and sensor gimbal rotation, and these are contested by some of the pilots involved. NASA's 2023 independent study team found no evidence of extraterrestrial origin in any case it reviewed and identified poor data quality as the central problem.
On the broad claim: in July 2023 former intelligence officer David Grusch testified to Congress that he had been informed of a multi-decade crash retrieval programme. He stated that his knowledge was second-hand and declined to name sources in open session. AARO's Historical Record Report Volume 1, published in March 2024, investigated these allegations, interviewed the individuals identified, and found no evidence that any US programme has possessed or reverse-engineered extraterrestrial technology; it also documented how classified conventional aerospace projects have historically generated exactly this kind of belief among cleared personnel.
So this entry is split, and says so. Unexplained sensor returns: real, open, and mostly a data-quality problem. Recovered alien hardware: investigated, unsupported.
04What it cost
The 2017 disclosure ended a seventy-year official posture of dismissal and produced a permanent reporting office, a legal channel for military aviators to report anomalies without career damage, and congressional provisions on records disclosure. The narrower and more useful outcome is that the stigma against reporting has fallen, which improves the data — the single thing that could actually resolve the remaining cases.