U.S. Air Force Airmen from the 633rd Medical Group guide active duty service members through a mass rapid oral fluid COVID-19 testing collections system at Joint Base Langley-Eustis, Virginia, June 2, 2020. In just three days, approximately 7,800 service members from JBLE will be evaluated for COVID-19 using this new method. (U.S. Air Force photo by Airman 1st Class Sara Dowe)