The phrase “disclosure era” — used loosely by journalists, researchers, and Congress members alike — refers to the period since 2017 in which the question of anomalous aerial phenomena has moved from fringe inquiry into mainstream policy debate.

A short chronology

• December 2017 — The New York Times reveals the existence of the Pentagon’s Advanced Aerospace Threat Identification Program (AATIP), and publishes the now-famous Navy cockpit footage (“Tic-Tac,” “Gimbal,” “Go Fast”).
• June 2021 — The U.S. Office of the Director of National Intelligence releases a preliminary assessment acknowledging 144 unexplained military encounters between 2004 and 2021.
• December 2022 — Congress establishes the All-Domain Anomaly Resolution Office (AARO), the most formal U.S. government effort to investigate UAP since the 1969 conclusion of Project Blue Book.
• July 2023 — Former intelligence officer David Grusch testifies under oath before the House Oversight Committee, alleging a decades-long classified program of crash retrievals and reverse engineering. His testimony does not constitute evidence in the technical sense, but its institutional significance is unambiguous.
• 2024–present — Continued congressional pressure, additional whistleblower testimonies, and ongoing AARO work.
• May 2026 — Declassified US UAP files released by the administration of Donald Trump beginning on May 8, 2026, and announced to continue as repeated, ongoing, expanding releases of UFO materials.

What disclosure has and hasn’t shown

Disclosure has shifted the legitimacy of the conversation. It has not, on its own, resolved the underlying question of what the phenomenon actually is. The official position of AARO remains that the vast majority of reported cases have prosaic explanations, while a residual fraction — small but persistent — defies current explanation.

The persistence of that residual category, decade after decade, across military forces with no contact with one another, is the part that is genuinely difficult to dismiss.

Key readings

• Leslie Kean, UFOs: Generals, Pilots, and Government Officials Go on the Record (2010).
• Ross Coulthart, In Plain Sight (2021) — Australian investigative journalist on the same beat.
• Congressional testimonies — particularly the David Grusch / Ryan Graves / David Fravor hearing, July 2023. (Public C-SPAN footage.)
• AARO’s official reports — useful for the institutional framing, even where one disagrees with their conclusions.
• US May 8, 2026 release of UFO / UAP declassified material — US Department of War, Wikipedia entry on US UAP files

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Last updated: May 2026.