Imminent (book)

Imminent: Inside the Pentagon's Hunt for UFOs is a 2024 memoir by Luis Elizondo, a former United States Army counterintelligence officer and senior member of the Advanced Aerospace Threat Identification Program (AATIP), covering unidentified aerial phenomena (UAP) encounters over U.S. military installations, internal Pentagon resistance to investigation, and decades-long government suppression of public awareness of the phenomenon. The manuscript passed through nearly a year of Pentagon pre-publication review before publication.

Background

Elizondo describes joining the U.S. Army after college, moving into military intelligence, and being recruited as a counterintelligence special agent investigating terrorism and espionage. In early 2009 he was brought in to run counterintelligence for the program that would later become public as AATIP, and rose to one of its senior members.

Contents

The book traces Elizondo's recruitment into AATIP and its predecessor programs and his investigations of UAP and adjacent phenomena. Substantive testimony in the book is treated in the dedicated subject articles linked below:

• AAWSAP origins — recruitment by Jay Stratton and "Rosemary Caine" to the Advanced Aerospace Weapons System Applications Program (AAWSAP); formal request from James Lacatski inside the Defense Intelligence Agency; bipartisan funding through Senators Harry Reid, Ted Stevens, and Daniel Inouye; backing from DIA Director Lt. Gen. Michael D. Maples. Main article: Advanced Aerospace Threat Identification Program
• Skinwalker Ranch investigation — AAWSAP work at the 480-acre Robert Bigelow-owned ranch in Utah; the hitchhiker effect coined by Stratton; Lacatski's refusal to drop the paranormal track when Elizondo and Stratton recommended focusing solely on UAP threats. Main article: Skinwalker Ranch Main article: Hitchhiker effect
• UAP activity over military installations — UAP routinely entering controlled U.S. airspace over sensitive sites, sometimes within fifteen feet of combat aircraft and splitting combat formations; corroboration via pilot reports, electro-optical gun camera footage, and FLIR data; pervasive global activity. Main article: UAP encounters with U.S. military aircraft
• Interest in human military and nuclear technology — Elizondo's assertion that non-human intelligences (NHI, the preferred Pentagon term over "aliens") are interested in human military capabilities and nuclear technology; the threat-calculus argument (capabilities versus unknown intent).
• Roswell — content cleared by Pentagon review: a vehicle broken into two pieces, recovered by the U.S. government and moved to a secure military installation; classified SCIF briefing from Hal Puthoff confirming "Yes, Lue, it was real"; four deceased nonhuman bodies recovered from the 1947 crash. Main article: 1947 Roswell UFO crash
• Puthoff's EMP theory — speculation that the Roswell craft may have been brought down accidentally by electromagnetic pulse from nearby atomic bomb tests, implying a circuitry "Achilles' heel" and the theoretical possibility of intentional EMP-induced retrieval. Main article: Hal Puthoff
• Additional crash retrievals — one nonhuman body recovered in December 1950 in Ciudad Acuña, Mexico; four deceased nonhumans allegedly recovered from the 1989 crash of a large Tic Tac-shaped craft in Kazakhstan, Soviet Union; AATIP-corroborated facts on multiple historic crashes; nonhuman pilots described as either naturally evolved beings or "engineered biological automatons." Main article: Crash retrieval
• The Legacy Program — the umbrella effort by various U.S. government elements and defense contractors to retrieve and reverse-engineer crashed nonhuman vehicles; described as so deeply classified that neither the Secretary of Defense nor the President would be informed unless they stumbled across it; named contractors include Lockheed Martin, TRW (later Northrop Grumman), McDonnell Douglas, Boeing, Raytheon, BAE Systems, the Aerospace Corporation, and reportedly Monsanto/Bayer for biological specimens. Main article: UFO legacy program
• Contractor access and Air Force control — confirmation by an unnamed contractor that it possessed UAP materials of nonhuman origin, conditional on permission from the Secretary of the Air Force; the contractor's view of the material as "an expensive liability"; Elizondo's conclusion that the Air Force gate was a bureaucratic shield. Main article: UFO legacy program
• Wilson/Davis memo — Eric Davis's thirteen-page summary of his late-1990s conversation with Vice Admiral Thomas R. Wilson, Joint Staff J2, found in Edgar Mitchell's safe and circulated by his estate; later entered into the Congressional Record by Congressman Mike Gallagher in 2022. Main article: Wilson–Davis memo
• The Collins Elite — religious-fundamentalist Pentagon and intelligence-community lifers shaping policy by theological belief; opposing AATIP from a position different from the Legacy Program. Main article: Collins Elite
• The five observables — AATIP's classification of UAP performance: hypersonic velocity (Mach 17+ at sea level), instantaneous acceleration (right-angle turns, several thousand g), low observability (no sonic boom, contrails, heat ablation, ionization), transmedium travel, and apparent antigravity; plus an unpublicized sixth observable, biological effects (radiation burns, internal organ damage), with two AAWSAP/AATIP colleagues under medical care for cutaneous and visceral injuries from UAP encounters, especially orbs. Main article: Advanced Aerospace Threat Identification Program
• DIRDs — Hal Puthoff's thirty-eight Defense Intelligence Reference Documents commissioned for AAWSAP/AATIP, covering invisibility cloaking, traversable wormholes and stargates, antigravity, brain/machine interfaces, and warp drives; framed as applicable to any conceivable weapon system to protect the program's true mission.
• Bureaucratic suppression — the "praetorian guards" layer that blocked AATIP findings from reaching the Secretary of Defense; decades of public denial backing the U.S. government into a corner.
• Grusch and the UAP Disclosure Act — David Grusch's public disclosure under whistleblower legislation; his July 2023 sworn testimony alongside David Fravor and Ryan Graves; the UAP Disclosure Act of 2023 (Schumer/Rounds/Rubio/Gillibrand) proposing eminent domain over biological and technological evidence in contractor possession; Congressman Mike Turner's opposition described by Elizondo as defense-contractor-aligned. Main article: David Grusch Main article: UAP Disclosure Act of 2023
• Orbs and personal paranormal encounters — diffuse green luminous balls of light (volleyball to baseball size) observed by Elizondo's family and neighbors floating through hallways and walls beginning around 2010 during active AATIP service; similar encounters reported by other AATIP-involved individuals. Main article: Orb (UFO)

Pentagon pre-publication review

Imminent underwent nearly a year of Pentagon pre-publication security review before Elizondo was authorized to discuss its contents publicly, a process he describes as required by his retained top-secret clearance and lifelong secrecy oath. Visible blank-line redactions in the published text mark passages the Pentagon judged too sensitive to release, "for everybody to see." Elizondo has stated the year-long review was driven specifically by the Roswell crash-retrieval content, which had previously been a topic he was told would result in imprisonment if discussed.

Foreword by Christopher Mellon

The book includes a foreword by Christopher Mellon, former Deputy Assistant Secretary of Defense for Intelligence, documenting the institutional atmosphere AATIP operated in: "When I first met Lue, we faced a prevailing establishment mindset that associated the UAP issue with irrational beliefs in subjects such as poltergeists and astrology." Elizondo clarified that Mellon was describing how UAP was stigmatized by association rather than dismissing those subjects.

Public release and reception

The book was promoted in a September 2024 Daily Show interview with host Ronny Chieng, who described it as "a page turner" that is "very well written" and "easy to follow"; the segment received over 609,000 views on the Comedy Central YouTube channel. Michael Salla highlighted the book's documentation of James Mattis-era Pentagon policy granting full retirement benefits to military personnel injured by UAP encounters as corroboration for the claims of military secret space program participants.

Elizondo on UAP physics

In post-publication interviews Elizondo has elaborated on the theoretical physics framework AATIP scientists, including Hal Puthoff, developed: a localized spacetime "bubble" insulating the craft from gravitational warping would render the observed flight characteristics (no wings, no conventional propulsion, no inertial effects) physically explicable, with subjective time inside the bubble decoupled from external spacetime. He also describes 1950s-era declassified U.S. military documents reporting UAP performance characteristics no contemporary adversary could plausibly have achieved.

See also

• To the Stars Academy of Arts and Science
• Crash retrieval
• Reverse engineering of exotic and NHI technology

References

This article incorporates material from the Wikipedia article "Imminent: Inside the Pentagon's Hunt for UFOs", as of 2026-04-26, released under the Creative Commons Attribution-ShareAlike 4.0 License.