170426-N-RT993-042 KWAJALEIN ATOLL (April 21, 2017) Builder 3rd Class William Mathis and Steelworker 2nd Class Charles Smith, both assigned to Naval Mobile Construction Battalion (NMCB) 1, replace plywood during a school building project in Kwajalein, Republic of Marshall Islands. NMCB-1 is forward deployed to execute construction, humanitarian and foreign assistance, special operations combat service support, and theater security cooperation in support of U.S. Pacific Command (U.S. Navy photo by Builder Constructionman Shyann Waters/Released)