A U.S. Air Force F-16 Fighting Falcon with the 510th Fighter Squadron (FS) flies above Greece, April 22, 2021. The 510th FS operated out of Andravida Air Base, Greece, while participating in INIOCHOS 21, an annual exercise designed to provide advanced and realistic aircrew training to strengthen interoperability of allied and partner air forces during joint operations and air defenses. (U.S. Air Force photo by Airman 1st Class Thomas S. Keisler IV)