Hospital Corpsman 2nd Class Edgar Rodgriguez performs a cleaning on Aviation Boatswain's Mate 2nd Class Nathaniel Hernandez in the dental clinic aboard the aircraft carrier USS Nimitz (CVN 68). Nimitz' medical department handles the physical, mental and dental health of more than 3,000 sailors who serve on board. (U.S. Navy photo by Mass Communication Specialist 2nd Class Robert Winn/RELEASED)