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 nine seconds of video footage from an infrared sensor aboard a U.S. military platform in 2020. Video Description: 00:06-00:08: An area of contrast enters the sensor field-of-view from the bottom left quarter of the screen, follows a generally linear path from the bottom of the screen to the top, and exits from the top left quarter.
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.