U.S. Air Force Master Sgt. Curtis Waters, firefighter, 512th Civil Engineering Squadron, Dover Air Force Base, Delaware, prepares his gear for a practice structure fire during exercise Patriot Warrior at Fort McCoy, Wisconsin, May 2, 2014. U.S. reserve components from all branches participate in combined joint exercises Patriot Warrior, Global Medic, Diamond Saber and CSTX in preparation for upcoming deployments in joint environments. (U.S. Air Force photo by Tech Sgt. Dan St. Pierre/Released)