180425-N-NH199-0020 TRINCOMOLEE, Sri Lanka (April 26, 2018) Joint Service members assigned to the U.S. Navy hospital ship USNS Mercy (T-AH 19) sift sand to mix with concrete at a construction site during an engineering exchange in support of Pacific Partnership (PP) 2018. PP-18's 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 Seaman Harley K. Sarmiento/Released)