160511-N-NO181-0911 DILI, Timor Leste (May 11, 2016) - Builder 3rd Class (SCW) Luis Filpo (left) from New York City, New York, and Utilitiesman 3rd Class Sean Clemens (right) from Spokane, Washington, assigned to Naval Mobile Construction Battalion (NMCB) 4, compact and spread the first of three layers of sand at the Manleuana Primary School, May 11. The crew placed 187 tons of sand 500mm deep to create a strong, stable base beneath the concrete slab that will serve as the floor of the school (U.S. Navy photo by Construction Electrician Constructionman George Oliver/Released)