Adriatic Refueler Air Force Tech. Sgt. Arriel Bromley operates the fuel injection arm of a KC-10 Extender during refueling training with an F-35 Lightning II over the Adriatic Sea, June 3, 2019. The mission is part of Astral Knight, a multinational exercise with more than 900 airmen participating across Europe. SHARE: Download: Full Size (1.2 MB) Tags: Adriatic Sea, Air Force, training Credit: Air Force Staff Sgt. Joshua R. M. Dewberry VIRIN: 190603-F-BG094-0194Y.JPG Photo Gallery