The official description
The United States Central Command submitted a report of an unidentified anomalous phenomenon to the All-domain Anomaly Resolution Office (AARO) consisting of 51 seconds of video footage from an infrared sensor aboard a U.S. military platform in 2023. Video description: 00:00-00:04: An area of contrast transits the frame from the bottom right edge to the lower left edge of the sensor field-of-view. 00:05-00:51: The sensor pans to track the area of contrast, keeping it generally within the center of the frame.
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.