'Vigilant' Training A soldier reports his findings for chemical, biological, radiological and nuclear threats during the Vigilant Guard 2016 at Camp Johnson, Vt., July 28, 2016. The exercise enables Guard units to improve cooperation with regional civilian, military and federal partners to prepare for emergencies and catastrophic events. Air National Guard photo by Tech. Sgt. Chelsea Clark SHARE: Download: Full Size (0.36 MB) Credit: Staff Sgt. Chelsea Clark VIRIN: 160728-Z-QK503-0029C.JPG Photo Gallery