A U.S. Air Force F-16 Fighting Falcon from the 457th Fighter Squadron, Fort Worth, TX, prepares to receive fuel from a 100th Air Refueling Wing KC-135 Stratotanker from RAF Mildenhall, England, during exercise Astral Knight over the skies of Italy, June 3, 2019. AK19 is a joint, multinational exercise which aims to demonstrate the integration, coordination, and interoperability of joint existing command and control at the operation and tactical levels. (U.S. Air Force photo by Airman 1st Class Brandon Esau)