Preparing Booster Navy Seaman Nolan Shepherd with the Naval Medical Readiness and Training Command Sigonella, prepares a COVID-19 booster vaccination at the immunizations office at USMRTC Sigonella, Italy, 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. SHARE: Download: Full Size (0.55 MB) Tags: Coronavirus, covid19vaccine Credit: Navy Petty Officer 1st Class Kegan E. Kay VIRIN: 220104-N-OX321-1019A.JPG Photo Gallery