Person
Matthew Brown
Department of State official identified as the whistleblower behind the Immaculate Constellation report that Michael Shellenberger gave Congress and Rep. Nancy Mace entered into the record in November 2024.
Claims (14)
Saw products of Immaculate Constellation, a multi-domain collection effort on UAP.secondhandSourced, unconfirmedthe Immaculate Constellation report, via UAP Gerb
Some craft come from archaeological digs and are 50,000 to 1 million years old, and oral-tradition agreements exist with non-human intelligence.UFO Crash Retrievals, Disclosure & Extended QnA - UAP Gerb LivesecondhandSourced, unconfirmedMatthew Brown
Kermit helped Borland and Brown set up Vanguard Enterprises to help whistleblowers; a money pledge was made for it at the UAPDF event.The State of Disclosure, Hanging with Ross Coulthart, Current Events & QnA - UAP Gerb LiveCurrent Work, Return of the PowerPoint & QnA - UAP Gerb LivefirsthandSourced, unconfirmedKermit (CPA co-host)
He was a contractor policy adviser on the counter-WMD mission in the Office of the Under Secretary of Defense for Policy when he found the brief.Matthew BrownMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
Around 2018, while volunteering to clean up classified file shares, he found a 12-15-slide PowerPoint capabilities brief on Immaculate Constellation for senior leadership.Matthew BrownImmaculate ConstellationMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
When he reported it as a spill, his supervisor told him to delete it and pretend he never saw it, then left the room.Matthew BrownImmaculate ConstellationMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
The next level sent him to the SAPCO, which told him he did not need to sign anything and to go away; the file was then deleted.Matthew BrownImmaculate ConstellationMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
He has seen UAP video on the inside, in near real time, much sharper than anything released, but never saw beings.Matthew BrownMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
He is certain some objects come into the atmosphere from space.Matthew BrownMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
The Intelligence Community Inspector General 'extremely hinted' to him personally that humans are not in charge.Matthew BrownMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
His home was broken into while he and his wife slept: his civilian passport was taken, his grandfather's ashes left by the garbage, and his wife's documents laid out in a row.Matthew BrownThe price of contactMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
He has had approaches that felt like foreign intelligence trying to extract information and deliver threats.Matthew BrownMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
He and Dylan Borland founded Vanguard Enterprise, a nonprofit for UAP whistleblowers' legal, career, medical and psychological needs; Jeffrey Nuccetelli has joined.Matthew BrownJeffrey NuccetelliMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandOn the recordMatthew Brown
He regrets coming forward on a personal level but not as a civic duty.Matthew BrownMatthew Brown on Immaculate Constellation, agreements and hybrid programsfirsthandSourced, unconfirmedMatthew Brown
What Matthew Brown said (53 claims)
On the record 1Witness testimony 24Alleged 27
“He was a contractor policy adviser on the counter-WMD mission in the Office of the Under Secretary of Defense for Policy when he found the brief.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“Around 2018, while volunteering to clean up classified file shares, he found a 12-15-slide PowerPoint capabilities brief on Immaculate Constellation for senior leadership.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
It was not labelled as a UAP brief and was filed where no one would look for it.
“The brief was a working draft: it had placeholder slides for SAP material, no portion markings, and a file history showing who had edited it recently.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
He says he gave the editors' names to Congress, not in public.
“When he reported it as a spill, his supervisor told him to delete it and pretend he never saw it, then left the room.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“The next level sent him to the SAPCO, which told him he did not need to sign anything and to go away; the file was then deleted.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Years before he became a whistleblower.
“The brief described Immaculate Constellation as an operational SAP for intelligence, surveillance and reconnaissance of UAP worldwide, using tasked and untasked space, airborne and seaborne assets, mainly imagery and MASINT.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
What he saw in the brief.
“The brief pointed to Schriever Air Force Base, Colorado, as at least one hub of the program.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“As an operational SAP it owns the mission and the tasking, not the sensors; the assets, R&D and analysis sit in their own compartments.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
His own reading ('I would hazard to guess').
“Immaculate Constellation is an old mission owned by the National Security Council and only implemented by DoD; it was not created after Elizondo's 2017 disclosure.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Learned after his exposure from people 'with placement and access'; the brief itself presented it as a DoD program.
“The brief's 'created after AATIP' history and its one expansion of ARV as 'alien reproduction vehicle' were counterintelligence canaries to trace leaks.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
He suggests FOIA searches on 'advanced reconnaissance vehicle' (TRW) instead.
“The brief's first case showed a large triangle appearing at night a football field or two above Russian naval vessels, including a known intelligence ship, off Kamchatka, hovering tilted and then vanishing.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
What he saw in the brief; he says 'I believe' it was Kamchatka.
“The brief's analysis said the Russian ships had been waiting there and had foreknowledge the triangle would appear.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
He reports the brief's analysis; it did not explain how.
“The triangle's appearance was a pre-arranged meeting, probably some kind of transfer, perhaps of data by line of sight.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
He flags this as 'my own speculation and not what was on the page'.
“Triangles appear very rarely in the regular reporting stream and seem to be plucked out and sequestered.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“The brief's other cases were orbs and irregular 'organic' shapes, some of which he had already seen on other systems.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Shows incidental collections being fed into the mission.
“He has seen UAP video on the inside, in near real time, much sharper than anything released, but never saw beings.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“NRO's Sentient came online after Immaculate Constellation existed and was integrated with it as an AI enabler for live detection and compartmentation of events.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
'To my understanding'; no comment on NGA 'Marsupial'.
“Reverse engineering is run out of the national labs and probably contractors, with enough success for propulsion and beamed power.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
No direct exposure; 'enough there' from people he met later.
“Archaeological recoveries are probably more common than crashes, and he doubts there are thousands of craft.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“He is certain some objects come into the atmosphere from space.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
From what he saw inside and others' testimony.
“A Truman/Eisenhower-era agreement with a third party has two terms: no-go areas inside the United States, and access to and communication with humans of their choosing.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Legacy-program oral tradition; he is sceptical of the Greada-treaty details.
“In the Nixon and Ford administrations custody of and research on recovered material was largely privatized.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
'Legacy program lore'.
“Secrecy is kept through trusted intelligence, military and industry families going back to the Manhattan Project, and some wealthy families knew before the legacy program and may hold NHI artifacts.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“Northrop Grumman's corporate security has authority to enforce program security, including deniable actions to punish people who step out of line.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
He calls Northrop 'one of the current bad actors in town'.
“The sister of a co-author of the Wall Street Journal article that blamed the 1967 Malmstrom event on an EMP test is a senior Northrop vice president.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
'I believe'.
“Major outlets have unacknowledged intelligence liaisons, and national security reporters get weekly ODNI briefings ('Mockingbird never stopped').”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
He says he has knowledge to back the opinion.
“Silicon Valley newcomers are elbowing in for derivative technology and samples, which shapes hearings and disclosure.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“Pax River's special-project hangars are owned by Amentum; he told Musk on X to ask for a tour of them.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
His tweet, confirmed on camera; source not stated.
“Amentum owns parts of EG&G.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
'If you look in their history'; corporate lineage via AECOM is on record.
“'Sirius' is a program, 1947 matters, and programs beyond SpaceX use electrogravitic propulsion.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
From his Musk tweet; no comment on the White House AI or MMTU.
“He has met someone who saw a UFO in a hangar, and fully believes Lacatski.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“The Intelligence Community Inspector General 'extremely hinted' to him personally that humans are not in charge.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“NHI is involved in the cover-up through a partnership in which humans are the juniors.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
He agrees with Borland.
“The Epstein files show an interest in people with psi, empathy or consciousness abilities.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
'Provably in the files'.
“Private interests, rather than the legacy program, probably traffic psionic people.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
'I have no evidence for that'; he cites the Gaetz briefing, Barber and Herrera.
“The psionic shoot-down story may be cover for breeding for psi potential over generations.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Michels raised 'P3', 'pink assets' and 'sundowner syndrome' from his own unnamed sources.
“People he knows who dealt with 'questionable groups' found the interest is more in women.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“The UFO community is penetrated by intelligence services and organized crime, and it is not safe for self-described empaths now.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“Ideas can be implanted in the waking mind and dreams by technical means, including at a distance.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
'I'm certain.' He knew a different internal term from 'voice to skull' and points to public MIT dream-implantation work.
“Extended electrodynamics allows long-range, through-seawater transmission and energy extraction, and the Russians are versed in it.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Raised with Kirk McConnell (SASC staff under Sen. Reed); calls Bearden 'a limited hangout' covering a core truth.
“The national labs store exotic samples; Paperclip's 'true believers' went to Los Alamos and the 'Nazis in name only' to Redstone.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“His home was broken into while he and his wife slept: his civilian passport was taken, his grandfather's ashes left by the garbage, and his wife's documents laid out in a row.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Police were called and a report exists; the only sign of entry was a small forced basement window.
“He has had approaches that felt like foreign intelligence trying to extract information and deliver threats.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“An AFOSI officer was proven to be harassing another, non-public UAP whistleblower.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“He and Dylan Borland founded Vanguard Enterprise, a nonprofit for UAP whistleblowers' legal, career, medical and psychological needs; Jeffrey Nuccetelli has joined.”On the recordMatthew Brown on Immaculate Constellation, agreements and hybrid programs
vanguardenterprise.org
“He regrets coming forward on a personal level but not as a civic duty.”Witness testimonyMatthew Brown on Immaculate Constellation, agreements and hybrid programs
“He attributes Sentinels of the Ether to Jake Barber and finds its seven redacted pages, out of a 20-page first chapter, compelling.”AllegedMatthew Brown on Immaculate Constellation, agreements and hybrid programs
Commentary. case/barber has a DOPSR-redacted Barber manuscript (seven pages); case/blue-on-blue-2004 calls Sentinels of the Ether Herrera's insider's book. Noted, not a correction.
“Immaculate Constellation is a programme that collects UAP and reproduction-vehicle signatures from imagery and signals feeds.”Witness testimony80 Years of UFO Crash Retrieval and Reverse Engineering: A Timeline
Matthew Brown's report in the November 2024 hearing record; Grusch confirmed.
“Some craft come from archaeological digs and are 50,000 to 1 million years old, and oral-tradition agreements exist with non-human intelligence.”Witness testimonyUFO Crash Retrievals, Disclosure & Extended QnA - UAP Gerb Live
“Someone most recently at Northrop Grumman coordinated attacks on whistleblowers.”Witness testimonyNorthrop Grumman & TRW - UFO Reverse Engineering, Material Exploitation, & Legacy Programs [Vol.2]
Matthew Brown on Weaponized, 18 March 2026; the name is redacted.
“UAP material sits in Amentum-owned special project hangars at Pax River.”Witness testimonyUFO Legacy Programs - Science Applications International Corporation (SAIC)
Matthew Brown's public statement, 5 Jun 2025.
“Someone most recently at Northrop Grumman and formerly DARPA's deputy SAPCO is a nexus of legacy security and a 'dirty tricks department'.”Witness testimonySpecial Access Required - the Secrecy of UFO Crash Retrieval Programs [VOL.2]
Matthew Brown on air; the person is unnamed.
Cases (1)
Connected
Immaculate Constellation orgDefense Advanced Research Projects Agency (DARPA) orgNorthrop Grumman orgNaval Air Station Patuxent River (Pax River) orgTerry Phillips person
Sources
- Reality Check: Inside 'Kona Blue', the alleged Lockheed-to-DHS UFO transfer
- UAP Gerb, 'The State of Disclosure, Hanging with Ross Coulthart, Current Events & QnA - UAP Gerb Live' (YouTube, 29 June 2026)
- UAP Gerb, 'Current Work, Return of the PowerPoint & QnA - UAP Gerb Live' (YouTube, 21 July 2026)
- UAP Gerb, 'UFO Crash Retrievals, Disclosure & Extended QnA - UAP Gerb Live' (YouTube, 30 August 2026)
- Jesse Michels, 'Pentagon Whistleblower UNLOADS on Alien Hybrid Breeding Programs (ft. Matthew Brown)' (American Alchemy, YouTube, 2026)
Mentioned on (7)
- American Alchemy: Matthew Brown on Immaculate Constellation, agreements and hybrid programs
- UAP Gerb: The State of Disclosure, Hanging with Ross Coulthart, Current Events & QnA - UAP Gerb Live
- UAP Gerb: UFO Crash Retrievals, Disclosure & Extended QnA - UAP Gerb Live
- UAP Gerb: NASIC: Air Force UFO Crash Retrieval & Reverse Engineering
- UAP Gerb: Northrop Grumman & TRW - UFO Reverse Engineering, Material Exploitation, & Legacy Programs [Vol.2]
- UAP Gerb: UFO Legacy Programs - Science Applications International Corporation (SAIC)
- UAP Gerb: Special Access Required - the Secrecy of UFO Crash Retrieval Programs [VOL.2]