The Pentagon on Friday released its seventh tranche of declassified documents on unidentified anomalous phenomena, highlighting a June 2026 sighting of a small, silent black triangular craft by federal law enforcement agents at a sensitive national security site in the western United States.

According to an All-domain Anomaly Resolution Office memorandum and a related FBI interview summary, three agents observed the matte black, non-reflective triangular object at dusk. Witnesses described a craft with an estimated 13-to-15-foot wingspan, 6-to-9-foot length, and 1-to-2-foot thickness. The object rose vertically in a steady manner for about 10 seconds to roughly 200-300 feet above a ridgeline without tilting or wobbling, hovered stably for around 20 seconds, then transitioned abruptly into high-speed horizontal flight, banking and descending into a canyon in two to three seconds at speeds comparable to a fighter jet.

No sound was reported despite the velocity, and thermal imaging showed a uniform signature across the craft with no localized heat sources or exhaust. Binocular views revealed no visible propulsion features, panels, or other structural details typical of conventional aircraft or drones. The agents, experienced with drones, noted that such a small craft would normally be audible at the observed distances of 1.4 to 3.2 miles.

The release forms part of the Trump administration’s ongoing PURSUE initiative to declassify UAP records from multiple agencies. This batch contains 28 documents focused on memos and reports rather than videos or photographs. The location, exact date, and witness names remain redacted.

Similar black triangle descriptions have appeared in earlier releases under the program, including accounts from 2002 over Bagram Air Base in Afghanistan and 2023 sightings near Colorado Springs. Officials have noted that the performance characteristics described exceed known U.S. or adversary capabilities.

The documents underscore continued scrutiny of UAP incidents near military and sensitive facilities, with AARO indicating the case warrants further investigation due to patterns with prior reports in the region. No debris or physical evidence was recovered in follow-up searches.