Staff Sgt. Michael O’Brien and Tech. Sgt. Michael Coleman, 403rd Civil Engineering Squadron fire fighters, remove their Joint Firefighter's Integrated Response Ensembles or “J-Fire suits,” after a structural fire exercise held at the Air National Guard Combat Readiness Training Center in Gulfport, Miss., during the April unit training assembly. The J-Fire suits are designed for fire fighters operating in a chemical and biological warfare environment. The structural fire training is part of their preparation for the upcoming operational readiness inspection. (U.S. Air Force photo by Tech. Sgt. Ryan Labadens)