Fire Training Air National Guard firefighters conduct fire training on a mock aircraft during exercise Patriot North at Volk Field Air National Guard Base, Wis., July 13, 2019. The National Guard works with civilian response units during the exercise to unify communications and disaster response practices. SHARE: Download: Full Size (1.33 MB) Tags: National Guard Credit: Air National Guard Tech. Sgt. Nic Kuetemeyer VIRIN: 190713-Z-HL527-0071C.JPG Photo Gallery