180423-N-RM689-0174 PACIFIC OCEAN (April 23, 2018) Medical staff aboard the U.S. Navy hospital ship USNS Mercy (T-AH 19) read the results of a CT scan during a mass casualty drill. Mercy is deployed in support of Pacific Partnership (PP) 2018, whose mission is to work collectively with host and partner nations to enhance regional interoperability and disaster response capabilities, increase stability and security in the region and foster new and enduring friendships across the Indo-Pacific region.(U.S. Navy photo by Mass Communication Specialist 2nd Class Kelsey L. Adams/Released)