US Releases Fourth Batch of Unidentified Aerial Phenomena Documents

The United States Department of Defense has made its fourth tranche of Unidentified Aerial Phenomena (UAP) documents available to the public, a historic step in opening up the nation's records on mysterious airborne sightings.

The documents detail encounters involving “boxy” shapes—sharp, angular formations—and anomalous lights that have cropped up in U.S. airspace over the past decades.

By the release, defense officials say there are more than 120 UAP reports from 2004‑2023 that now include sensor telemetry, radar data, and pilot testimony. Many reports describe phenomena that do not match known aircraft or natural atmospheric events.

Secretary Pete Hegseth stated that declassifying these files “helps to put the word on the table for investigative accuracy” and vindicates the public’s interest in the truth behind these sightings. He emphasized that the U.S. people deserve access to the information that has historically fueled “justified speculation.”

Analysts suggest the releases could influence future UAP research, providing a richer dataset for aerospace engineers and atmospheric scientists to test hypotheses about technology levels, maneuver capabilities, and possible extraterrestrial origins.

A copy of the previous declassification tranches can be viewed by visiting the BBC’s archive of UAP coverage at BBC UAP archives.

The release follows a growing public demand for openness on the topic and responds to the growing number of credible UAP encounters recorded by military pilots, commercial operators, and civilian observers alike. The Department is expected to continue reviewing and publishing UAP data in the coming fiscal year.