2004 Nimitz UAP incident

On November 14, 2004, during a pre-deployment exercise off the coast of Baja California, United States Navy pilots from Carrier Air Wing Eleven aboard the USS Nimitz reportedly intercepted an oblong white object — later called the "Tic Tac" — approximately 60 miles off the coast of San Diego, California. The encounter — corroborated by four direct aircrew witnesses, the AN/SPY-1 radar of the Aegis cruiser USS Princeton, the *Nimitz'*s own radar, and an E-2 Hawkeye airborne early-warning aircraft — is documented in the "FLIR1" infrared targeting-pod video, which the United States Department of Defense formally authenticated in April 2020. The intercept was led by Commander David Fravor, commanding officer of VFA-41 "Black Aces", with Commander Alex Dietrich flying the wingman aircraft. The incident became the central evidentiary case of the post-2017 UAP disclosure movement in the United States after The New York Times reported on it in December 2017 alongside the Advanced Aerospace Threat Identification Program (AATIP).

Background: prior radar tracking

Beginning approximately November 10, 2004 — two weeks before the intercept — the *Princetons AN/SPY-1B radar, the*Nimitzs own radar, and an E-2 Hawkeye airborne early-warning aircraft had been tracking multiple unidentified objects that descended from above 80,000 feet to approximately 20,000 feet in seconds, hovered for three to four hours, and then accelerated straight back up. The Princeton controller characterized up to a dozen objects being tracked at a time. Fravor described the SPY-1 system on the Aegis cruiser as "probably one of the most sophisticated systems in the world."

According to Princeton senior radar operator Kevin Day, the objects appeared daily, often in groups of ten to twenty, and reports filed up the chain of command received no response. The contacts had appeared during periods when no manned aircraft were airborne; the November 14 intercept was the first time the radar tracks coincided with launched fighter flights. Despite the sustained tracking, no alert had been passed to the air wing; Fravor and his squadron had no awareness of the objects until they were vectored to intercept one.

The intercept

Fravor and his wingman — flying F/A-18F Super Hornets, with two crew per aircraft — were diverted from a scheduled air-defense training exercise with VMF-232 Red Devils when the Princeton vectored them to investigate a radar contact. Fravor flew with his weapons systems officer; Lt. Cmdr. Jim Slaight was in the second seat of the lead aircraft, while Alex Dietrich flew the wingman aircraft.

At merge plot — when the radar could no longer resolve the pilots from the target — the crews shifted to visual search. The sky was clear and the sea was calm with no white caps, making what the pilots observed immediately anomalous: a patch of disturbed white water, cross-shaped and roughly the size of a Boeing 737, with a white elongated object maneuvering approximately 50 feet above it.

Fravor described the object as a smooth white "tic tac"-shaped craft approximately 40 feet long — roughly the size of an F/A-18 fuselage — with no wings, no rotors, no tail rotor, no rotor wash, no windows, no visible propulsion, and no exhaust plume. The object was pointing north–south and moving abruptly in all four horizontal directions with no inertial lag, maneuvering above the disturbance in the water as if monitoring something submerged. Dietrich, observing from altitude while Fravor descended for a closer approach, described the object as "oblong shaped, moving very fast, white, sort of a matte finish, just like a tic tac" with "no apparent flight control surfaces, no apparent visible means of propulsion."

Fravor descended toward the object while his wingman held altitude to maintain a god's-eye view. At approximately the twelve o'clock position of his orbit, the object abruptly reoriented — pointing east–west — and began ascending to mirror his descent. Fravor cut across the circle to intercept; at roughly half a mile, as the object crossed his nose, it accelerated and disappeared in under a second. When Fravor queried his wingman, she confirmed the object was gone; when the two jets turned back toward the disturbance zone, the white water had also disappeared. According to 60 Minutes, four people — two pilots and two weapons systems officers in the back seats of the two aircraft — watched the object for roughly five minutes.

The Princeton controller then reported that the object had reappeared at the flight's pre-briefed combat air patrol (CAP) point, roughly 60 miles away, in approximately 30 to 40 seconds. On returning to the CAP point, Fravor's flight never reacquired the object visually or on radar.

The FLIR1 video

Shortly after Fravor's flight landed, a second F/A-18F crew — including weapons systems officer Lieutenant Commander Chad Underwood — was launched to the CAP point on a tanker mission carrying a targeting pod. Alerted to the encounter, Underwood acquired a radar return; as he attempted to lock it, the object began actively jamming the radar — an act technically constituting an act of war under naval rules of engagement. Underwood then slaved the AN/ASQ-228 ATFLIR (Advanced Targeting Forward-Looking Infrared) targeting pod to the same bearing, obtaining a passive infrared track without emitting radar energy. Underwood later described his priority at the time as "more concerned with tracking it, making sure that the videotape was on so that I could bring something back to the ship, so that the intel folks could dissect whatever it is that I captured."

The resulting footage — the FLIR1 video — shows an oblong white object hovering in the center of the frame; at the end of the clip the object accelerates left and exits the field of view. Underwood is reportedly the pilot who coined the term "Tic Tac" for the object in the infrared image — a description partly inspired by a scene from the 1980 comedy Airplane! — to avoid other descriptors that might have caused the encounter to be taken less seriously. Jeremy Corbell has characterized the object's behavior as displaying active jamming with instantaneous acceleration from standstill — "a propulsion system we don't have in our inventory and no other nation does."

Six aircrew were directly involved in the encounter: the four pilots and weapons systems officers who observed the object visually, and the two aircrew who recorded the FLIR video.

Classified debrief and data removal

Fravor's crews debriefed at the Nimitz Carrier Intelligence Center (CVIC) immediately after landing. According to Fravor, no formal debrief was conducted for the incident itself, no tapes were collected from him, and no personnel were instructed not to speak — a fact he has recounted with evident surprise. Separately, personnel reportedly arrived by helicopter at both the Princeton and the Nimitz and removed all recorded radar and ATFLIR data related to the incident. Luis Elizondo later showed Fravor documentation indicating that the original incident analysis report was produced by members of the AATIP team and placed under a full FOIA exemption. The classified investigation report was later obtained by journalist George Knapp through Senator Harry Reid: "The report is now out because Harry Reid got it to George Knapp and they were good enough to redact it."

Disclosure and authentication

The FLIR1 video circulated informally for years before any official acknowledgment. Fravor received a link from a crew member around 2008–2009 showing the footage on a web forum, and it subsequently spread to YouTube. In December 2017, The New York Times published a story on the Pentagon's Advanced Aerospace Threat Identification Program (AATIP), run by Luis Elizondo, which included the FLIR1 footage. The United States Department of Defense formally authenticated the video in April 2020, characterizing the aerial phenomena as "unidentified."

Former U.S. Deputy Assistant Secretary of Defense for Intelligence Christopher Mellon has described the Nimitz incident report as having "floored" him: "I was floored because there was simply no earthly explanation for what was observed… That thing was not made by man." Mellon stated he spent months trying to bring information about the Nimitz and similar sightings to the Secretary of Defense without success; when no one in the Defense Department acted on it, he brought the videos — which he noted were not classified — to The New York Times and to former colleagues on Capitol Hill, contributing to the December 2017 story. He characterized the incidents as part of a decades-long pattern: "These kinds of incidents have been going on for decades and on a significant scale… What was incredible was the number of witnesses, the quality of the witnesses, the quality of the data."

Dietrich, who had been reluctant to speak publicly, subsequently appeared on 60 Minutes after a CBS producer persuaded her, and gave interviews to the PBS NewsHour and CNN's Anderson Cooper. She has declined to speculate publicly on whether the object was extraterrestrial: "I don't lie awake at nights thinking about it. I don't think we'll get closer to identifying what it was that day." Of her reason for speaking out, she stated: "As a military officer, as a servant of the citizens of the United States, I have a duty and obligation to respond if there are curious and concerned citizens." In a 2023 interview she recalled the moment of the object's disappearance as disorienting: "It was just like a ping pong ball."

Fravor has maintained that the object exceeded any known human technology and has expressed doubt that it represented a classified domestic program, arguing the performance leap would be implausibly large. He has stated his certainty of the sighting at 99.9%, noting that any perceptual error would have had to affect all four direct aircrew witnesses simultaneously.

AATIP assessment and the five observables

Luis Elizondo, who ran AATIP, has described the Nimitz case as one of the program's "gold standard" cases: "when you look at the Nimitz case, you have this overwhelming number of sensors looking at the same thing going on that the pilots are reporting — and to me that was most compelling." He has framed the case against AATIP's "five observables" — instantaneous acceleration, hypersonic velocity without a propulsion signature, low observability, transmedium capability, and positive lift without aerodynamic surfaces — which the Tic Tac allegedly demonstrated in full.

Elizondo has also noted that the UAP designation — "unidentified anomalous phenomenon" — was adopted in part because the term "unidentified flying object" presupposes aerodynamic flight: "These things don't have wings. So that term we're not even sure is even accurate anymore because they're not necessarily flying. We see them underwater."

2023 Senate testimony

In sworn testimony before the Senate Armed Services Committee on July 26, 2023, Fravor confirmed that the Tic Tac showed no infrared plume or thermal exhaust in any electro-optical or infrared mode; that it moved from zero to matching the speed of an F/A-18 instantaneously; and that no aircraft in U.S. possession could replicate those maneuvers or, had it been armed, shoot the object down. He also confirmed that the encounter was corroborated by the *Princetons SPY-1, the*Nimitzs own radar, and the E-2 Hawkeye radar track; Fravor's own fire-control radar never detected the object. At the same hearing, Fravor thanked George Knapp and Jeremy Corbell for their role in bringing the incident to public attention, and entered into the congressional record a Defense Intelligence Reference Document on advanced space propulsion based on vacuum space-time metric engineering.

Conventional explanations and ODNI assessment

Skeptical researchers have offered conventional explanations for the FLIR1 footage and associated observations, including instrument artifacts and software malfunctions, optical phenomena such as parallax effects or bokeh distortion from camera lenses, misidentified aircraft or drones, possible electronic-warfare spoofing, and atmospheric phenomena. Investigator Mick West has argued that "the simplest explanation is that it's just a plane," cautioning that "a lack of data does not mean aliens are the likely answer." Astrophysicist Adam Frank has observed that the available evidence "doesn't amount to much" with respect to claims of extraterrestrial technology defying known physics.

Journalism professor Keith Kloor has criticized the broader UAP media coverage as "driven by thinly-sourced and slanted reporting" with insufficient attention to "prosaic explanations."

The June 2021 Office of the Director of National Intelligence preliminary assessment on UAP concluded that available reporting lacked sufficient data to determine the nature of most incidents, grouped possible explanations into five categories — airborne clutter, atmospheric phenomena, U.S. government or industry development programs, foreign adversary systems, and "Other" — and acknowledged that some incidents exhibited unusual flight characteristics including apparent high velocity and extreme maneuverability. The report stated that "UAP probably lack a single explanation" and recommended continued investigation.

Underwater object hypothesis

During the intercept, Fravor observed that the cross-shaped patch of disturbed white water — in an otherwise glassy sea — was consistent with a submerged object displacing water at the surface: "as these waves are coming across when they hit that object, they're gonna break on top just like you would with a seamount." When the aerial object departed, the white water simultaneously disappeared, which Fravor has interpreted as suggesting the underwater object had also left. He has stated his personal belief that "in my heart I think there was something under the water."

Elizondo has noted the hypothesis that the Tic Tac was "prepping the battlefield" — scouting an area of strategic interest — as a possible alternative to benign observation. Fravor has added that the object's apparent foreknowledge of his pre-briefed CAP point — a waypoint not broadcast over the radio — suggested intelligence-gathering capabilities against the strike group's own operational planning: "it obviously knew" where the aircraft were headed.

Attorney Danny Sheehan, citing naval intelligence contacts, has identified the waters off Guadalupe Island — near the incident location off Baja California — as allegedly a site of a permanent underwater base that the Nimitz strike group had been specifically deployed to monitor.

Trans-medium propulsion

Fravor has speculated that the Tic Tac's behavior — including the apparent transmedium transition between ocean and atmosphere — could only be explained by a non-reactive, field-based propulsion system. A conventional engine interacts with its medium (air or water); a craft that manipulates its local gravitational field instead "moves through a void" it creates around itself, making the medium irrelevant: "you could literally in theory fly, go into the ocean, cruise around, pop back up, fly around, go to space… You remove the barriers of the normal propulsion that we have today."

Corbell, noting that multiple sightings off the California coast since at least World War II report objects emerging from or entering the ocean, has framed the encounter as consistent with Bob Lazar's description of field propulsion at S-4: "with the field propulsion system, as Commander Fravor is describing, as Lazar described, it doesn't matter the medium of space, air or water, there's no resistance, no splash." Elizondo has suggested that the apparent instantaneous acceleration and hypersonic velocity of objects like the Tic Tac could in principle be explained by craft that manipulate space-time rather than propelling through it: "what would appear to be instantaneous acceleration, hypersonic velocity, and other things — now becomes a reality… when you understand the mathematics and some of the theorem that they proposed, a lot of these other observables become possible."

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This article incorporates material from the Wikipedia article "USS Nimitz UFO incident", as of 2026-04-26, released under the Creative Commons Attribution-ShareAlike 4.0 License.