Swab Test An airman performs a nasal swab test during Exercise Amalgam Dart to check for potential exposure to COVID-19 at Thule Air Base, Greenland, June 8, 2021. SHARE: Download: Full Size (2.14 MB) Tags: health, air force , coronavirus, covid19vaccine Credit: Air Force photo VIRIN: 210608-O-D0430-600.JPG Photo Gallery