180423-N-RM689-0116 PACIFIC OCEAN (April 23, 2018) Medical staff bring a mock patient into the CT scan room during a mass casualty drill aboard the U.S. Navy hospital ship USNS Mercy (T-AH 19). 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)