,The Freedom Flag drills involve supersonic stealth jets, including South Korea's F-35A and the U.S. Marine Corps' F-35B fighter aircraft.

From the articleNorth Korea denounces South Korea-US air defence drills, KCNA reportsAlso in North Korea denounces South Korea-US air defence drills, KCNA reports, North Korea denounces South Korea-US air defence drills, KCNA reports | Reuters