Matthew Brown is a former United States national security official who served in the Office of the Secretary of Defense and the U.S. State Department, holding Top Secret/SCI clearances. In 2024, he emerged as the alleged author of the Immaculate Constellation report — a classified document he submitted to Congress detailing a covert government program that collects imagery and video of unidentified anomalous phenomena (UAP) from military and intelligence platforms. Brown went public on the Weaponized podcast hosted by Jeremy Corbell and George Knapp, making him one of the most significant UAP whistleblowers to surface since David Grusch’s 2023 congressional testimony.
Biography & Background
Career & Clearances
Brown held national security positions across the Office of the Secretary of Defense (OSD), the Office of the Under Secretary of Defense for Intelligence and Security (USD(I&S)), and the U.S. Department of State. In these roles he worked on sensitive intelligence matters including weapons of mass destruction (WMD), holding Top Secret/Sensitive Compartmented Information (TS/SCI) clearances — the same access tier required for the most sensitive classified programs in the U.S. government.
Discovery of Immaculate Constellation
Brown first encountered what he would come to identify as “Immaculate Constellation” while conducting routine research on the Joint Worldwide Intelligence Communications System (JWICS) — the U.S. intelligence community’s top-secret classified network. He discovered what appeared to be misfiled documents on a shared Office of the Secretary of Defense server. Among them was a reference to the 2018 Schriever Wargames that led him to a trove of imagery and video collected by U.S. military and intelligence platforms showing encounters with unidentified craft.
When Brown attempted to report his findings through official channels, superiors told him to delete the files rather than escalate. He subsequently sought whistleblower protections and engaged congressional liaisons, eventually submitting a formal written report to Congress.
The Immaculate Constellation Report
What the Document Claims
The Immaculate Constellation report — approximately 12 to 15 pages — describes what Brown alleges is a covert U.S. government reconnaissance program dedicated to tracking advanced craft of both human and non-human origin. According to the document, Immaculate Constellation functions as a central or “parent” unacknowledged special access program (USAP) that consolidates UAP observations from both tasked and untasked collection platforms across the military and intelligence community.
The report was submitted to members of Congress in 2024, first brought to public attention by journalist Michael Shellenberger, and formally entered into the Congressional Record in November 2024 during a House Oversight Committee hearing on UAP.
Key Incidents Documented
- F-22 Interception: A group of orbs surrounded and intercepted an F-22 Raptor, forcing it out of its designated patrol area. The aircraft attempted to break trajectory and evade but was boxed in. The incident was reportedly captured by U.S. intelligence collection platforms.
- Satellite Imagery: Brown described satellite evidence of a large craft — football-field-sized — observed and documented by U.S. overhead collection assets.
- Systematic Collection: The program allegedly consolidates UAP sightings from across the military and intelligence community into a single centralized repository, operating outside normal oversight channels as an unacknowledged special access program.
Path to Public Disclosure
Brown’s decision to go public began when he traveled to California in the summer of 2024 to meet with journalist Michael Shellenberger. After reviewing the report, Shellenberger agreed to publish the story — a process that involved months of vetting and coordination with congressional offices before release. Brown subsequently appeared in a two-part interview on Weaponized, hosted by documentary filmmaker Jeremy Corbell and investigative journalist George Knapp, where he detailed his discovery of the program, the internal resistance he faced, and his path to becoming a public whistleblower.
In May 2025, Brown confirmed his authorship of the Immaculate Constellation report in a widely-circulated interview, delivering what has become one of the most-quoted lines in the modern UAP disclosure movement: “We live in a carefully constructed reality.”
Government Response
The Department of Defense spokesperson Sue Gough issued a formal denial: “The Department of Defense has no record, present or historical, of any type of SAP called ‘Immaculate Constellation.'”
This follows a standard DoD pattern in UAP disclosure cases — the department does not confirm or deny classified programs by name, a practice that neither substantiates nor definitively refutes the underlying claims. The same response was given for AATIP and KONA BLUE before those program names received any official acknowledgment.
Media Appearances & Links
Primary Source Documents
- Immaculate Constellation Report — Submitted to House Oversight Committee, November 2024 (PDF)
- House Oversight Committee UAP Hearing — November 13, 2024 (Congress.gov)
Key Media Coverage
- Cybernews — “Matthew Brown: holding past presidents accountable for UAP secrecy”
- Liberation Times — “Whistleblower Goes Public on ‘Immaculate Constellation'”
- NewsNation — “UFO videos collected by DOD’s Immaculate Constellation: Whistleblower”
- NewsNation — “Immaculate Constellation: What is the alleged Pentagon program on UAPs?”
- Above the Norm News — “We Live in a Carefully Constructed Reality” (May 2025)
Primary Interview: Weaponized Podcast (Jeremy Corbell & George Knapp)
Brown’s most detailed public account came in a two-part appearance on Weaponized, hosted by documentary filmmaker Jeremy Corbell and investigative journalist George Knapp. Brown described how he discovered the Immaculate Constellation program on the Pentagon’s classified network, the resistance he encountered when reporting it internally, and his decision to bring the information to Congress and the public. The episodes are available on Spotify and YouTube.
Frequently Asked Questions
Who is Matthew Brown?
Matthew Brown is a former U.S. national security official who worked in the Office of the Secretary of Defense and the U.S. State Department, holding Top Secret/SCI clearances. He is the alleged author of the “Immaculate Constellation” report — entered into the Congressional Record in November 2024 — which claims to detail a covert U.S. government program tracking UAPs via classified military and intelligence collection platforms.
What is the Immaculate Constellation report?
A 12–15 page document attributed to Matthew Brown describing an alleged unacknowledged special access program (USAP) that consolidates UAP observations from classified U.S. military and intelligence platforms. It was submitted to Congress, vetted by journalist Michael Shellenberger, and entered into the Congressional Record in November 2024.
How did Matthew Brown discover the program?
While conducting routine research on JWICS — the U.S. intelligence community’s classified network — Brown encountered misfiled documents on a shared Office of the Secretary of Defense server that referenced the Immaculate Constellation program. He subsequently viewed imagery and video of UAP incidents on classified systems.
What did the government say about Brown’s claims?
DoD spokesperson Sue Gough stated: “The Department of Defense has no record, present or historical, of any type of SAP called ‘Immaculate Constellation.'” This is the standard DoD practice of neither confirming nor denying classified programs by name — the same response given for AATIP before it was officially acknowledged.
What happened when Brown reported his findings internally?
When Brown escalated his findings through official channels, superiors told him to delete the files rather than act on them. He subsequently sought whistleblower protections, engaged legal counsel, and submitted a written report to Congress before going public.
What specific UAP incidents does Brown describe?
Brown described F-22 jets being intercepted and boxed in by fast-moving orbs, satellite imagery of a football-field-sized craft, and a broader catalog of UAP encounters recorded by U.S. military and intelligence platforms allegedly consolidated under the Immaculate Constellation program.
Where can I watch Matthew Brown’s interview?
Brown’s primary public appearances are the two-part Weaponized podcast with Jeremy Corbell and George Knapp, available on Spotify and YouTube. He has also been covered by Cybernews, Liberation Times, and NewsNation.