NAVAL AIR STATION SIGONELLA, Italy (Dec. 7, 2021) Cmdr. Ronald Cappellini, Naval Air Station Sigonella executive officer, receives his COVID-19 vaccine booster from Lt. j.g. Aracely Duerkop, during a mass-immunization exercise on Naval Air Station Sigonella, Dec. 7, 2021. NAS Sigonella’s strategic location enables U.S., allied, and partner nation forces to deploy and respond as required, ensuring security and stability in Europe, Africa and Central Command. (U.S. Navy photo by Mass Communication Specialist 2nd Class Josh Cote)