As seen through a night-vision device, Air Force firefighters suppress a controlled fire during Exercise Patriot Warrior on Fort McCoy, Wis., May 4, 2014. As seen through a night-vision device, Air Force firefighters suppress a controlled fire during Exercise Patriot Warrior on Fort McCoy, Wis., May 4, 2014. SHARE: Download: Full Size (1.85 MB) Tags: Photo Essays Credit: VIRIN: 124768-G-KNT04-888.jpg Photo Gallery