Senior Airman Dwight Smith, 403rd Civil Engineer Squadron firefighter, secures his breathing mask as he dons his J-Fire suit to battle an interior fire on a mock-up during a Live Fire Burn exercise. The exercise, held during the May unit training assembly at the Air National Guard Combat Readiness Training Center, Miss., is part of the firefighters’ annual training. (U.S. Air Force photo by Tech. Sgt. Ryan Labadens)