Firefighters from Luke Air Force Base, Ariz., Wright-Patterson AFB, Ohio, and Scott AFB, Ill., conduct fire pit training during exercise Patriot Warrior at Sparta-Fort McCoy Airport, Wis., Aug. 20, 2017. Patriot Warrior is an Air Force Reserve training exercise designed to enhance wartime skills in a deployment-style environment and evaluate the ability of units to deploy mobility airlift and agile combat support capabilities in support of joint theater operations. (U.S. Air Force photo/Staff Sgt. Corban Lundborg)