A medical technician with the 913th Aerospace Medicine Squadron administers the second dose of the Moderna COVID-19 vaccine to a fellow Reserve Citizen Airman on Sunday, March 7, 2021, at Little Rock Air Force Base, Arkansas. Department of Defense personnel are highly encouraged to take the vaccine in order to protect their health, families and community, and to mitigate public health risks associated with the COVID-19 pandemic.(U.S. Air Force Reserve photo by Senior Amn Kalee Sexton)