OKINAWA, Japan (Jan. 6, 2022) Marine Corps Sgt. Maj. Roland McGinnis, sergeant major of Battalion Landing Team 1/5, 31st Marine Expeditionary Unit (MEU), receives a booster shot for COVID-19 on Camp Hansen, Okinawa, Japan, Jan. 6, 2022. Being vaccinated against diseases, including COVID-19, anthrax, and hepatitis is essential in maintaining a fully operational force ready to move without any hindrance, including sickness. The 31st MEU, the Marine Corps’ only continuously forward-deployed MEU, provides a flexible and lethal force ready to perform a wide range of military operations as the premiere crisis response force in the Indo-Pacific region. (U.S. Marine Corps photo by Lance Cpl. Cesar Ronaldo Alarcon)