The official description
The Department of the Air Force submitted a report of an unidentified anomalous phenomenon to the All-domain Anomaly Resolution Office (AARO) consisting of 58 seconds of video footage from an infrared sensor aboard a U.S. military platform in 2020. Video Description: 00:00-00:03: The sensor tracks an area of contrast acquiring a reticle lock. 00:04-00:30: The area of contrast gradually increases in distinctiveness against the background. 00:31: The sensor narrows its field-of-view to zoom in on the area of contrast. 00:32-00:56: The area of contrast increases in apparent size and distinctiveness.
Quoted from the U.S. Department of War, PURSUE UAP releases. Read every file for this incident in Official files or at war.gov/UFO.