U.S. Army Spc. Jessica Isales, with Delta Company, Water Purification Section, 192nd Brigade Support Battalion, Puerto Rico Army National Guard, reviews the technical manual of a Lightweight Water Purifier System as part of training at the Cerrillos Reservoir in Ponce, Puerto Rico, Feb. 9, 2013. The water recycling exercise improves unit's capabilities in the event of a state or federal emergency. (U.S. Army photo by Staff Sgt. Joseph Rivera Rebolledo/Released)