In early 2015, as the USS Theodore Roosevelt’s air wing was grinding through workups off the East Coast, naval aviators began seeing something they could not square with training runs and checklists.
Two short infrared clips later nicknamed “GIMBAL” and “GOFAST,” escaped the ready room and spread into public view, eventually prompting the Pentagon to release the original Navy files and confirm what many aviators were already saying: these were Unidentified Aerial Phenomena.
The USS Roosevelt encounters are often framed as a turning point in public awareness of UAP. That framing is correct, but incomplete. Beyond cultural impact, the Gimbal and GoFast events represent something more consequential: a convergence of sensor data, pilot testimony, and geometric constraints that resist conventional explanation. When examined in detail, the footage does not merely raise questions. It systematically narrows the range of viable interpretations.
Why These Two Videos Matter
The Department of Defense formally released the three well-known Navy cockpit videos on April 27, 2020, including the two tied to the Roosevelt’s 2015 workups. The Pentagon stated directly that the videos were genuine and that the objects remained “unidentified.” This created an authoritative baseline, removing ambiguity about provenance and classification.
Official DoD Releases:
- GIMBAL (Navy/DoD): https://www.navair.navy.mil/foia/documents
Gimbal video shows one of the objects that was captured in the frame.
- GOFAST (Navy/DoD): https://www.navair.navy.mil/foia/documents
Pilots say there was a fleet of objects, though the “GO FAST” video itself only shows a single object.
- DoD Statement (2020): https://www.defense.gov/News/Releases/Release/Article/2165713/
- AARO’s Official “UAP Imagery” Page: https://www.aaro.mil/UAP-Reporting/UAP-Imagery/
The Backdrop at Sea
USS Theodore Roosevelt departed Norfolk on January 8, 2015, to begin COMPTUEX, the intense certification exercise required before deployment. Public Navy imagery and independent reporting show the carrier operating heavily in the Northeast Florida and Virginia warning areas during January–March 2015. These are the windows associated with the GIMBAL and GOFAST recordings.
During this same period, aviators began reporting persistent radar tracks, unusual formations, and multiple objects that appeared stationary against strong winds – conditions that would later shape congressional testimony.
These encounters did not occur in isolation. Naval aviators operating from the USS Theodore Roosevelt reported repeated contacts over multiple days, often involving multiple objects simultaneously. The Gimbal recording itself followed closely after the GoFast event, with the same aircrew tracking objects that appeared to operate in coordinated groups. Radar systems aboard aircraft and carrier platforms detected what pilots described as a “fleet,” indicating structured, multi-object behavior rather than a singular anomaly.
What the Clips Show in Plain Language
GIMBAL
A bright, hot target hovers above a cloud deck. On the intercom, aviators note strong winds and reference “a whole fleet” on their situational awareness display—one of the most important but often overlooked aspects of the case.
The object appears to rotate relative to the frame as the clip continues.
GOFAST
A colder target appears above the ocean surface, and as the ATFLIR pod locks on, it seems to skim the waves at extreme speed.
Both clips are short, noisy, and authentic Navy captures.
What Is Not in the Files
Neither clip includes a verified range to target, nor USS Roosevelt radar data. Without range, size and speed are ambiguous. This absence is central to all debates about GOFAST and GIMBAL.
Inside the Cockpit Sensors
Roosevelt’s F/A-18 Super Hornets carried the AN/ASQ-228 ATFLIR, a stabilized electro-optical and mid-wave infrared system designed for long-range target tracking.
ATFLIR uses a multi-axis gimbal with an internal derotation mechanism. Bright infrared sources can produce asymmetric glare, and when the system derotates the image, the glare can appear to rotate even if the target itself does not.
Optical engineers have demonstrated this effect in comparable systems. This underpins the “glare + derotation” hypothesis for the rotation seen in GIMBAL.
However, this addresses only the rotation, not the fleet context, the radar tracks, or the aviator interpretations.
The Forward Looking Infrared (FLIR) system used to capture the Gimbal footage provides more than visual imagery. It encodes angular motion, horizon reference, and tracking behavior of the sensor itself. These elements allow for post-event reconstruction of the engagement geometry. When these parameters are analyzed, the footage becomes not just observational, but diagnostic.
Fleet Context Matters
Roosevelt aviators repeatedly reported multiple objects appearing on radar, sometimes dozens at once. Some held fixed positions against high winds. Others maneuvered. These observations continued for weeks.
This larger operational picture is irreconcilable with isolated explanations that treat GIMBAL or GOFAST as single ambiguous objects like birds or balloons.
This context is the reason aviators, including Ryan Graves, reject simplified reconstructions.
GOFAST: The Debate Is Not Settled
AARO published a reconstruction suggesting that GOFAST could be consistent with a wind-drifting object at higher altitude, appearing fast due to parallax. This model places the object around 13,000 feet and moving at modest speeds.
However:
- Aviators reject this explanation, noting that the object was part of a fleet of radar tracks.
- The Navy has not endorsed AARO’s model as definitive.
- The DoD still classifies GOFAST as Unidentified.
- No radar data or full telemetry has been released.
- A wind-drifting balloon or bird does not match the multi-object radar environment described by pilots.
Thus, GOFAST remains Unidentified and Anomalous.
AARO’s reconstruction is one interpretation, not the resolution.
NASA’s Perspective
NASA’s 2023 UAP study highlighted cognitive and sensor-interpretation pitfalls in high-speed environments. They emphasized that without range, human perception of speed and distance becomes unreliable, supporting the idea that GOFAST cannot be resolved without full metadata and radar.
But NASA did not conclude GOFAST was a bird, balloon, or solved event.
GIMBAL: Geometric Constraints and Range Determination
One of the most consequential findings derived from analysis of the Gimbal footage concerns the distance to the object. Contrary to skeptical interpretations suggesting a distant aircraft, the camera behavior indicates the opposite.
As the recording aircraft tracks the object, the FLIR system exhibits a subtle but continuous downward pan. This motion is critical. A distant object moving away from the observer would require minimal vertical adjustment to maintain lock. By contrast, a nearby object being approached requires continuous correction in elevation, as the observer’s relative position changes rapidly.
Frame-stitching and horizon-referenced analysis confirm this downward tracking behavior . The implication is direct: the object was not tens of miles away, but within operational proximity, consistent with pilot estimates.
This single constraint significantly alters the interpretive landscape. At close range, conventional aircraft should display recognizable structural features. The absence of such features becomes central to the anomaly.
The motion profile of the Gimbal object departs from known aerodynamic behavior in several key respects. Radar data and pilot observations describe an object that:
- Executes directional changes without a visible turning radius
- Appears to momentarily halt before reversing course
- Climbs during the final segment of the recorded footage
This pattern is not merely unusual. It implies either:
- A propulsion system capable of negating inertia, or
- A misinterpretation of scale and distance
However, when combined with the close-range determination, the second possibility becomes increasingly difficult to sustain. The observed kinematics align more closely with what UAPedia classifies as anomalous flight path behavior, including instantaneous maneuvering and non-ballistic motion.
Over the course of the Gimbal footage, the object exhibits a subtle but measurable increase in apparent size. This observation carries important implications.
If the object were a distant aircraft moving away from the recording platform, its apparent size would either remain constant or decrease. Instead, the observed growth is consistent with the recording aircraft closing distance with a nearby object .
This reinforces the geometric conclusion derived from camera motion. Independent indicators, both angular and visual, converge on the same interpretation: the object was operating at close range.
A central point of contention in the analysis of the Gimbal footage is the object’s apparent rotation. Skeptical interpretations, most prominently advanced by Mick West, propose that this rotation is not physical but instead an artifact of the sensor system.
This claim can be tested.
The FLIR system incorporates a de-rotation mechanism designed to stabilize the image presented to the pilot. This mechanism applies uniformly to all elements within the frame. If the observed rotation were purely an optical artifact, it would affect the entire scene equally.
However, stabilized footage reveals a different pattern. The background environment, including cloud structures, exhibits gradual rotational change consistent with camera behavior. The object itself, by contrast, does not rotate in tandem with these elements .
This decoupling indicates that the rotation is not a product of the imaging system. Instead, it reflects motion intrinsic to the object. The rotation also correlates temporally with changes in the object’s flight path, suggesting a relationship between orientation and maneuvering.
GIMBAL: Still Unresolved
GIMBAL features an apparent rotation. The glare + derotation model is technically plausible, but it does not address:
- The fleet of radar tracks mentioned by aircrew
- Pilots’ description of anomalous behavior
- The lack of public radar telemetry
- Any potential maneuver or reversal described later in testimony
A competing analysis (arXiv, 2023) showed that at closer ranges – within 10 NM – the movement could fit pilot testimony describing an abrupt reversal. Also a
AARO has not published a resolution.
GIMBAL remains unresolved.
What Would Actually Settle GIMBAL
A few routine items, none of which have been released, would resolve the event:
- Full-length time-coded video
- Airplane radar + E2D Hawkeye radar synchronized tracks
- Winds aloft and atmospheric snapshots
- Full telemetry and pod metadata for the segment
Without these the case cannot be closed.
Bottom Line
GOFAST
AARO’s parallax model is one interpretation but does not incorporate pilot testimony or multi-object radar context. The object remains Unidentified and Anomalous.
GIMBAL
Still entirely unresolved. Competing models exist, but full data is withheld.
Claims Taxonomy
Verified:
- The Roosevelt videos are authentic Navy sensor footage: DoD released and affirmed them.
- UAP around Roosevelt created real hazards and training disruptions. ODNI reports and pilot testimony confirm this.
- Multi-sensor detection (FLIR + radar).
- Pilot testimony from trained aviators.
- Official classification as unidentified.
Probable:
- GOFAST shows an object racing just above the water at extreme speed.
- Parallax modeling is not plausible; aviators reject the balloon/bird interpretation; presence of a fleet of object changes framing; full data unavailable.
- Close-range object (based on camera geometry).
- Coordinated multi-object behavior.
Disputed
- GIMBAL shows a craft reversing or rotating beyond conventional flight.
- Exact nature of propulsion
- Interpretation of rotation mechanism
Misidentification (challenged)
- Distant jet hypothesis weakened significantly by geometry and scaling arguments
Speculation Labels
GOFAST (2015)
Hypothesis (Technical Interpretation)
GOFAST represents a distant, slow-moving object whose apparent high speed is created by parallax under fast jet motion and ATFLIR viewing geometry.
This hypothesis models the object at higher altitude with modest intrinsic speed. It relies on inferred wind profiles and angular-rate geometry, but does not incorporate the fleet context reported by aviators.
Researcher Opinion
The parallax model is mathematically consistent but incomplete because it treats GOFAST as an isolated visual target without multi-sensor context.
Researchers note that the fleet of radar tracks described by Roosevelt aviators challenges the idea that the object was a balloon, bird, or random drifting debris.
Witness Interpretation
Roosevelt aviators interpreted GOFAST as part of a larger pattern of UAP operating in formation or at least in coordinated clusters.
Pilots rejected the parallax explanation on the grounds that GOFAST occurred during persistent daily incursions involving multiple targets that did not behave like windborne objects.
GIMBAL (2015)
Hypothesis (Optics-Based)
The rotation seen in GIMBAL is an artifact of ATFLIR’s internal optics, glare behavior, and derotation mechanism rather than a physical rotation of the object.
This hypothesis is grounded in well-documented optical effects within multi-axis IR systems. It does not address the fleet radar context or reported maneuvering.
The objects exhibit controlled propulsion inconsistent with aerodynamic lift-based systems.
Hypothesis (Kinematic Behavior)
GIMBAL shows a physical object executing a rotation or reversal maneuver inconsistent with conventional aerodynamic platforms.
This is consistent with some range-constrained analyses and aligns with pilot testimony describing abrupt movement on situational displays.
Researcher Opinion
Both optical and maneuver-based interpretations remain viable because key metadata, range, full-length video, and synchronized radar tracks, have not been released.
Researchers stress that without this data, GIMBAL cannot be decisively attributed to glare, nor can exotic motion be confirmed.
The convergence of geometry, sensor data, and motion analysis suggests a non-prosaic origin, pending further classified data release.
Witness Interpretation
Naval aviators interpreted GIMBAL as part of a fleet of UAP exhibiting coordinated behavior and unknown capabilities.
Pilots reported multiple stationary and maneuvering objects in the same region and did not consider the rotation to be a mere optical artifact.
Pilots describe structured craft operating in fleet formation with intent-like behavior.
References
AARO. (2023). UAP Imagery and Case Files. Office of the Secretary of Defense. https://www.aaro.mil/UAP-Reporting/UAP-Imagery/
AARO. (2023). Effect of Forced Perspective and Parallax View on UAP Observations. Office of the Secretary of Defense. https://www.aaro.mil
AARO. (2023). GOFAST Case Resolution Card (Senate Armed Services Committee submission). Office of the Secretary of Defense. https://www.aaro.mil
MarikvR. The ‘Gimbal’ UFO: New Findings Falsify Prosaic Explanations. Rebuttal of skeptical theories. (YouTube)
Department of Defense. (2020, April 27). Statement by the Department of Defense on the Release of Historical Navy Videos. https://www.defense.gov/News/Releases/Release/Article/2165713/
DVIDS. (2015, January 21). USS Theodore Roosevelt COMPTUEX imagery. Defense Visual Information Distribution Service. https://www.dvidshub.net
Graves, R. (2023, July 26). Written Testimony to the U.S. House Oversight Committee on Unidentified Anomalous Phenomena. U.S. House of Representatives. https://oversight.house.gov
Metabunk. (2018–2023). GIMBAL Optical Glare and Derotation Analysis. https://www.metabunk.org
NASA. (2023). UAP Independent Study Team Final Report. NASA Science Directorate. https://science.nasa.gov/uap/
Naval Air Systems Command. (2020). FOIA Document Library: GIMBAL & GOFAST Original Files. https://www.navair.navy.mil/foia/documents
Office of the Director of National Intelligence. (2021). Preliminary Assessment: Unidentified Aerial Phenomena. ODNI. https://www.dni.gov/files/ODNI/documents/assessments/PrelimUAPTFReport.pdf
The War Zone (Rogoway, T., & Trevithick, J.). (2019). Hazard Reports Reveal Extent of Navy’s UAP Encounters Off the East Coast. The Drive. https://www.thedrive.com
U.S. Department of Defense. (2024). AARO Historical Record Report: Volume I. Office of the Secretary of Defense. https://www.defense.gov
U.S. Naval Institute (USNI) News. (2015). Roosevelt Begins COMPTUEX. https://news.usni.org
House Committee on Oversight and Accountability. (2023). Hearing on Unidentified Anomalous Phenomena: Witness Panel including Ryan Graves. https://oversight.house.gov
arXiv. (2023). Reconstruction of Potential Flight Paths for the January 2015 GIMBAL UAP [Preprint]. Cornell University Library. https://arxiv.org
Washington Post. (2019, April). Navy Formalizes UAP Reporting Guidance. https://www.washingtonpost.com
Oversight Committee (U.S. House). (2023). Pilot testimony on UAP incursions.
USNI News. (2015). Roosevelt COMPTUEX operations.
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