U.S. Air Force Airmen from the 633rd Medical Group administer a new rapid oral fluid COVID-19 test at Joint Base Langley-Eustis, Virginia, June 2, 2020. The 633rd MDG, McDonald Army Health Center and the Air Combat Command Surgeon General’s office were chosen by the Department of Defense as the first units on a military installation to conduct this testing, piloting a new mass rapid testing system. (U.S. Air Force photo by Airman 1st Class Sara Dowe)