U.S. Air Force Senior Airman Kristen Nicola, 52nd Medical Group Public Health technician (front), prepares Covid test paperwork as U.S. Air Force Staff Sgt. Paul Hukreide, 52nd Medical Group Warriors Operational Health Clinic NCO in charge, prepares to administer a Covid test at Spangdahlem Air Base Germany, April 1, 2021. For Covid testing, some of the duties Public Health is responsible for is interviewing, screening, and contact tracing patients. (U.S. Air Force photo by Tech. Sgt. Warren D. Spearman Jr.)