U.S. Air Force Senior Airman Brandon Fletcher, 633rd Healthcare Operations Squadron aerospace medical technician, prepares to brief Airmen on how to swab their mouths at a COVID-19 test site on Joint Base Langley-Eustis, Virginia, Oct. 7, 2020. Each week at JBLE, the 633rd Medical Group tests about 100 randomly selected base personnel from various units across the installation. (U.S. Air Force photo by Staff Sgt. Delaney Gonzales)