The Cheyenne Mountain UAP: A Rare Case Where the Government Offered an Explanation

On February 15, 2022, five U.S. Army soldiers at Fort Carson, Colorado watched a motionless, patterned object hover over Cheyenne Mountain for minutes before it vanished. Years later, two separate PURSUE files describe it - an FBI interview with one of the witnesses, and a technical analysis from AARO's Intelligence Community partner. The IC's verdict, delivered with explicit low confidence: sunlight, snow, and clouds. The case is still formally unresolved. Here is why, read from both documents.

What the witnesses saw

The fullest account is in FBI-UAP-D001, an FD-302 - the FBI's standard interview-record form - documenting a March 2025 interview with one of the five soldiers, conducted via Microsoft Teams. He and four colleagues from his unit were walking toward a building at Fort Carson on a clear day when they noticed an object hovering in a low point, or "saddle," of Cheyenne Mountain.

He described it as "bean-shaped," oval, in a horizontal position with a curved indentation on the bottom, "matte white, or off-white" and "appearing non-metallic." Its surface was "covered in intersecting lines or ridges which formed an abstract polygon pattern" across the entire object. It was completely motionless - not drifting in the wind - for an estimated 3-5 minutes, and silent. He compared its apparent size to "10% of the saddle of the mountain," or roughly a pool cue held at arm's length.

None of the five had a phone on them. By the time they decided to send someone back to the vehicle for one, the object had vanished, and a search of the western skyline turned up nothing. Independently, each of the five later drew what they remembered - and per the file, the drawings were consistent: a horizontal, white, bean-shaped object with abstract crossing lines. The witness said he believed a report went to the Army, and that AARO contacted him in early 2024 asking for his account - though he was never formally interviewed by AARO itself, only by the FBI a year later.

A companion file, FBI-UAP-D002 (an FD-1057 investigative-activity record), and FBI-UAP-D003 (a digital rendering built from that testimony) round out the FBI's contribution.

The IC's analysis: sun, snow, and clouds

A separate document, ICA-UAP-D001, is AARO's Intelligence Community partner's technical write-up of the same event - and it is considerably more precise about the when and where. It places the sighting at 0935 Mountain Time on February 15, 2022, with the object roughly six miles west of the witnesses, appearing "roughly the size of a large jet," stationary about 300-500 feet above the mountain, and slowly changing shape - described here as an "angular, non-symmetrical potato made of uneven panels" with a "slightly translucent, shimmering white appearance." The witnesses reported clear blue skies; the object was visible for 30 to 180 seconds before it "suddenly disappeared."

The analysis then works the physics. At the reported time, the sun sat at roughly 27.5 degrees altitude in the southeast, azimuth 125, casting soft angled light. Historical National Water and Climate Center data put snow depth on Cheyenne Mountain at 6 to 12 inches that day. And despite the witnesses' memory of clear skies, weather records from AFWA and Weather Underground indicate the sky was actually partly to mostly cloudy that morning - likely including altostratus clouds, a mid-level layer (6,500-23,000 feet) that can appear opaque while still letting some light pass through.

"Analysis possibly indicates that the positioning of the sun in relation to Cheyenne Mountain would allow for backscattering of sunlight reflecting off snow-covered ground. This reflection could illuminate low-level clouds in the vicinity, which might account for the visibility of the object followed by its sudden disappearance. It is possible that either the clouds or the sun shifted slightly, causing the reflection to vanish."

The document is explicit that this is a low-confidence assessment, citing "uncertainty in the field of view of each witness, amount of snow cover, and exact elevation and amount of cloud cover." It also states plainly: "No anomalous data or characteristics were recorded or assessed, and the event did not represent an unknown adversarial capability." No aircraft or balloons were noted active in the area at the time.

Same event, two very different-sounding descriptions

Read side by side, the "bean-shaped... abstract polygon pattern" object and the "angular, non-symmetrical potato made of uneven panels" sound, at a glance, like they could be different things. They are not. The location (Cheyenne Mountain, viewed from Fort Carson), the date (February 2022), and the witness count (five U.S. Army/service members who watched a motionless, patterned, pale object disappear) all match precisely enough that this is unambiguously the same incident, described independently by two different processes years apart:

The shape descriptions differ because they come from different sources describing a complex, indistinct object from a distance: one witness's memory rendered in an interview transcript, versus an IC analyst's paraphrase of the aggregated accounts. The FD-302 itself notes the five witnesses' independently-drawn sketches were "consistent" with each other - so the variation here is between the FBI's write-up and the IC's write-up of the same underlying testimony, not a sign of two different sightings.

Why "low confidence" doesn't mean "solved"

This is worth being precise about, because it's easy to round "the government has a mundane explanation" up to "the government solved it." That is not what this file says. AARO's IC partner offers backscattering as possible, not established - the document itself flags real uncertainty in each witness's exact field of view, the precise snow coverage, and how much cloud was actually present at 300-500 feet above the mountain at that exact moment. Per this site's manifest data, AARO's own disposition keeps the case unresolved as of June 2026, meaning the analysis is on file but has not formally closed the report.

What makes this file unusual in the PURSUE archive is not that AARO explained it away - it didn't - but that a released document shows the government's actual analytical process for a mundane-candidate case: checking sun angle, checking snow depth, checking cloud reports, and being honest that the fit is imperfect enough to only warrant "low confidence." That transparency is itself the interesting part.

What this case does and does not establish

• It does not establish that the object was ordinary. AARO's own disposition is "unresolved," and the analysis rates its own confidence as low.
• It does not establish that the object was anomalous. Five credible military witnesses describe something that vanished suddenly under conditions that a plausible optical phenomenon could also produce.
• It does show, concretely, what "the government looked into it" can look like when the file is actually released: specific sun-position math, specific historical snow-depth data, specific weather-service cross-checks - not a dismissive one-liner.
• The gap between "bean-shaped" and "angular potato" is a lesson in how the same testimony can read differently depending on who is paraphrasing it - not evidence of a second, unrelated sighting.

How to verify everything on this page

1. All quoted language from the IC analysis - the sun-position figures, snow-depth data, cloud-cover findings, and the "low confidence" caveats - is transcribed verbatim from the OCR-extracted text of ICA-UAP-D001, linked above.
2. All quoted witness testimony - the shape, color, surface pattern, duration, and the account of the group's independently-drawn sketches - is transcribed verbatim from FBI-UAP-D001's FD-302.
3. The identification of these as the same event (rather than two similar but distinct sightings) is this site's own analysis, based on matching location, date, and witness count across both documents - reasoning laid out in full above, not asserted without support.
4. AARO's "unresolved as of June 2026" disposition is stated directly in the released file summary, not inferred.

Bottom line

Most files in this archive either describe something AARO calls unresolved with no explanation offered, or something already resolved as conventional with little drama. This one is rarer: a specific, technical, honestly-hedged attempt at a mundane explanation for a genuinely striking witness account - filed, but not closed. Read together, these two documents are as close as the PURSUE disclosure gets to watching the government's actual reasoning process happen in real time.