US Navy (USN) Hospital Corpsman First Class (HM1) Letra Simmons (foreground) gives USN Storekeeper SEAMAN (SKNS) Dwuan Chandler a tuberculosis (TB) test in the hangar bay of USN Nimitz Class Aircraft Carrier USS RONALD REAGAN (CVN 76). The test was conducted as a preventive measure after a USN Sailor from the ship tested positive for TB. The REAGAN is currently moored at its homeport station at Naval Air Station North Island, San Diego, California (CA)