COVID-19 Testing Hospital corpsmen from Naval Health Clinic Charleston perform a practice COVID-19 swab test July 8, 2020 at the NHCC at Joint Base Charleston, S.C. The hospital corpsmen were tasked with learning how to administer a COVID-19 swab test. The training will be used to test symptomatic patients and seamen, and asymptomatic seamen to attempt to lessen the spread of the virus. SHARE: Download: Full Size (0.12 MB) Credit: Air Force Airman 1st Class Sara Jenkins VIRIN: 200708-F-CP533-1088M.JPG Photo Gallery