Shadow Soldier Army Sgts. Justin Welch, right, and Justin Scott scan a concrete wall inside a bunker using devices to detect hazardous materials and radiation during Vigilant Guard 2016, an exercise at Camp Johnson, Vt., July 27, 2016. Welch and Scott are assigned to the Maine Army National Guard’s 11th Civil Support Team. Air National Guard photo by Airman 1st Class Jeffrey Tatro SHARE: Download: Full Size (1.44 MB) Credit: Airman 1st Class Jeffrey Tatro VIRIN: 160727-Z-LK849-0277C.JPG Photo Gallery