Hospitalman Chelsea Greene flanks out the hose during flight deck firefighting training aboard the Military Sealift Command hospital ship USNS Mercy (T-AH19) at Naval Base San Diego. The training is in preparation for Rim of the Pacific Exercise (RIMPAC) 2014, the world's largest international maritime exercise scheduled to begin in Hawaii in June. (U.S. Navy photo by Mass Communication Specialist 3rd Class Pyoung K. Yi/Released)