U.S. Navy Chief Hospital Corpsman Emeterio Donato, chief of the preventative medicine team for Camp Lemonnier's expeditionary medical facility, tests the pH of the drinking water on Camp Lemonnier. The team conducts monthly quality control testing in conjunction with daily testing by the camp's water production plant to ensure the safety of the drinking water. (U.S. Navy photo by Mass Communication Specialist 1st Class Eric Dietrich/Released)