Air Force firefighters assigned to the 178th Wing extinguish a simulated fire Aug. 6 during Northern Lightning, an exercise focused on integrating fourth and fifth generation aircraft, held annually at Volk Field, Wis. Airmen from diverse career fields trained on fire suppression techniques, enhancing their abilities to perform as multi-capable airmen in austere locations in accordance with Agile Combat Employment warfighting concepts. U.S. Air National Guard photo by Airman 1st Class Josh Kaeser