U.S. Air Force U.S. Air Force Staff Sgt. Jullana McCall, 9th Maintenance Squadron repair and reclamation craftsman, bolts an N-cap on a U-2 Dragon Lady at Beale Air Force Base, California, April 20, 2020 . The 9th Maintenance Group maintains the fleet of U-2s to deliver high-altitude intelligence, surveillance and reconnaissance globally. (U.S. Air Force photo by Senior Airman Colville McFee)