MANAMA, Bahrain (Dec. 30, 2020) Hospital Corpsman 2nd Class Rose Martinez, from Navy Medicine Readiness and Training Unit (NMRTU) Bahrain, prepares a syringe with the COVID-19 vaccine on board Naval Support Activity (NSA) Bahrain. The vaccine is being administered in phases based on priority levels to reduce the burden of COVID-19 in high-risk populations and simultaneously mitigate risk to military operations. (U.S. Navy photo by Mass Communication Specialist 1st Class Justin Yarborough)