Water pumps through the system of a U.S. Air Force fire truck for members of the 433rd and 512th Civil Engineering Squadrons, Joint Base San Antonio-Lackland, Texas and Dover Air Force Base, Delaware, respectively, 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)