Swab Testing A Massachusetts National Guard medic prepares to test a nasal swab from a resident of the Life Care Center of Nashoba Valley in Littleton, Mass., April 3, 2020. The Massachusetts National Guard worked with the facility’s staff to administer COVID-19 tests to help prevent the spread of the virus. SHARE: Download: Full Size (2.81 MB) Tags: Army, Coronavirus Credit: Army Staff Sgt. Kenneth Tucceri, Massachusetts National Guard VIRIN: 200403-Z-ZI015-107.JPG Photo Gallery