160714-M-TM809-226 AT SEA (July 14, 2016) Hospital ship USNS Mercy (T-AH 19) transits en route to its next mission stop of Pacific Partnership 2016, Da Nang, Vietnam. Upon arrival, partner nations will work side-by-side with local military and non-government organizations to conduct cooperative health engagements, community relation events and subject matter expert exchanges to better prepare for a natural disaster or crisis. (U.S. Marine Corps photo by Sgt. Brittney Vella/Released)