A black triangle rises above a ridge, hangs motionless, then disappears into a canyon without a sound. It reads like the opening of an X-Files episode. A government witness-debrief memo records that account, but its most important detail may be the warning printed before the dramatic part.

The document says the descriptions reflect the witnesses’ interpretations and should not be treated as conclusive evidence of the object’s actual features or performance.
The case received renewed scrutiny in Liberation Times reporting updated November 1. The underlying files were released October 23 and describe an encounter earlier in 2026. The exact date, location and witness identities remain redacted.
What the witnesses described
According to the All-domain Anomaly Resolution Office’s three-page debrief, federal law-enforcement personnel were working from separate observation posts around dusk. One observer detected something to the west using thermal equipment and alerted the others by radio.
Two witnesses moved to obtain a view. Their main tripod-mounted thermal system could not be repositioned quickly across the terrain, so binoculars and a handheld thermal monocular became part of the observation.
They described a matte-black triangular shape with an estimated wingspan of 13 to 15 feet. The account places it approximately 1.4 to 3.2 miles from the primary observation post.
In their telling, it climbed for roughly ten seconds, hovered for about twenty, then banked and descended into a canyon. They reported no audible sound or obvious exhaust, rotors, windows or other familiar aircraft features.
The measurement the file does not contain
The witnesses compared its departure speed to a military fighter jet. But the memo explicitly records that no instrument measured its speed.
That matters. An observer’s impression of a sudden acceleration cannot, by itself, tell us how quickly an object accelerated or whether it exceeded the capabilities of known aircraft. The distinction becomes especially important when distance, scale and motion are being judged across miles of terrain.
The report also says the object disappeared behind intervening terrain. A search the following morning found no wreckage, ground scarring or vegetation damage. Those details do not identify what was seen, but they keep the account from turning into an unsupported crash story.
There is another correction worth reading
Liberation Times’ November 1 update acknowledges that the released records do not establish whether the witnesses worked for the FBI. An FBI file about an encounter does not automatically make every person in that encounter an FBI agent.
The publication also notes that the accompanying sequence of images is not identified in the file as photographs taken during the event. They should not be presented as verified encounter photos.
So what does the file actually give us? A detailed record of an unusual observation, including its limitations. It does not establish an extraterrestrial origin or measured, physics-defying flight.
For the curious nerd, that leaves a worthwhile question: what additional evidence would distinguish an unfamiliar aircraft, an observational error, or something else? The mystery becomes more interesting when we keep the missing data visible instead of filling it with a spaceship.