160523-N-QW941-085 PACIFIC OCEAN (May 23, 2016) An MH-60S helicopter assigned to the Blackjacks of Helicopter Sea Combat Squadron (HSC) 21 participates in vertical replenishment training aboard hospital ship USNS Mercy (T-AH 19). Deployed in support of Pacific Partnership 2016, Mercy's mission is designed to emphasize multilateral cooperation and building mutual trust in the Indo-Asia-Pacific. Medical, engineering and various other personnel embarked aboard Mercy will work side-by-side with partner nation counterparts, exchanging ideas, building best practices and relationships to ensure preparedness should disaster strike. (U.S. Navy photo by Mass Communication Specialist 3rd Class Trevor Kohlrus/Released)