Staff Sgt. Morgan Mack, 423rd MDS NCO in charge of immunizations, administers the COVID-19 vaccine to a Department of Defense Education Activity teacher at RAF Alconbury, England, Jan. 7, 2020. Department of Defense Education Activity teachers are receiving the vaccine in an effort to reduce the potential spread of COVID-19 within the schools and community. (U.S. Air Force photo by Senior Airman Eugene Oliver)