31st FW kicks-off Astral Knight 2021
U.S. Air Force Capt. Timothy Joubert, 555th Fighter Squadron pilot, conducts a pre-flight check on a U.S. Air Force F-16 Fighting Falcon during Astral Knight 2021 at Aviano Air Base, Italy, May 13, 2021. Astral Knight 2021 is a joint, multinational exercise involving Airmen, Soldiers and Sailors from the United States working with service members from Albania, Croatia, Greece, Italy and Slovenia. (U.S. Air Force photo by Staff Sgt. Savannah L. Waters)