United States.The 200-foot triangle that hummed low overhead

One night in June or July 2011, after dark, one witness was pulling out of his driveway around 8 or 9 PM. He was a passenger; someone else was driving, and a third occupant sat in the front passenger seat. The vehicle was about fifty feet from the driveway, preparing to turn left at the intersection. As they reached the corner, the witness was looking out the window and saw three lights in the sky. He got out of the vehicle, and looking up, saw a massive black isosceles-triangle-shaped object flying north. The object had a car-sized white light at each of its three corners, slightly recessed inward, emitting a diffuse glow. It flew low, producing a low humming noise with a pulsing sound.

One of the occupants told him to get a video, but by the time he got his phone out, the object had already flown over the treeline behind the houses to the north and out of sight. They watched it for a total of about 10 to 15 seconds. He felt, in his own words, 'dumbfounded and awestruck.' Based on how low it flew and the dimensions of their surroundings, one witness estimated the object was about 800 feet above the ground and calculated its dimensions at roughly 200 feet long by 100 feet wide. Though it looked to him more like an equilateral triangle at first glance, those calculated dimensions would suggest more of an isosceles shape. The object moved slowly and steadily, and both witnesses agreed on the pulsing hum. One of them further recalled something grayish or graphite-colored in the middle of the triangle, between the three corner lights.

Neither witness had a clear memory of the object's thickness or other details of its vertical profile: they explained that, being initially underneath the triangle, they didn't get a good view of its side, and that the moment they likely would have gotten a better view of its rear profile coincided exactly with their failed attempt to pull out a phone to record it. One witness mentioned that other people in the neighborhood may also have seen it, and that he would try to find out whether those neighbors would be willing to give a written statement or speak with the FBI. The formal interview, documented in an FD-302, wasn't conducted until April 2025 — nearly fourteen years after the original sighting.

This is the most classic case in the 2026 PURSUE batch in terms of morphology: a large black triangle, silent except for a low hum, with white lights at all three corners, flying slowly and low — the exact same family as Hudson Valley (New York, 1980s), the Belgian wave (1989-90), and the Phoenix Lights (1997), already cataloged under pattern `8l` in this corpus. What sets this file apart is the time gap: nearly fourteen years between the sighting and its formal documentation, an interval that introduces the ordinary risk of memory reconstruction, but also reflects something real about these reporting programs — for years, many witnesses have no accessible channel or incentive to formalize what they saw, until an initiative like PURSUE offers one.

The case's strength lies in its dual source: two occupants of the same vehicle, interviewed together, agree on the central elements —shape, three lights, pulsing hum, absence of a contrail, disappearance behind the treeline— while differing on secondary details (roundness of the corners, exact shade of the central color), the variation expected between independent memories of a real event rather than a rehearsed script. The dimension estimate (~200 x 100 feet) is substantial for a silent object flying that low, and the total absence of an exhaust trail trivially rules out a conventional jet aircraft.

The posterior retains a considerable mass on `mundano_natural` (0.40, `misid`) because a large experimental military drone or blended-wing aircraft with formation lighting is a known, documented explanation for much of this pattern's sightings since the 1980s. But the low pulsing hum, the calculated size, and fourteen years of waiting without resolution leave a non-trivial mass split between `humana_clasificada` and `indet` — the file neither closes the case nor reveals it, which is, once again, the most honest position available.