COVID-19 Test A Marine Corps recruit receives a test for COVID-19 at The Citadel, a public military college, in Charleston, S.C., May 5, 2020. The Marine Corps is using the college for a 14-day observation period for recruits amid the COVID-19 pandemic. SHARE: Download: Full Size (1.9 MB) Tags: Marine Corps, Coronavirus Credit: Marine Corps Staff Sgt. Rebecca Floto VIRIN: 200505-M-IJ860-1012M.JPG Photo Gallery