NAVAL AIR STATION SIGONELLA, Italy (Jan. 4, 2022) Hospitalman Nolan Shepherd, from Beloit, Wis. attached to U.S. Naval Medial Readiness and Training Command (USMRTC) Sigonella, prepares an COVID-19 booster vaccination, at the immunizations office at USMRTC Sigonella, Jan. 4, 2022. 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 1st Class Kegan E. Kay)