151104-N-ZZ999-340 KWAJALEIN, Republic of Marshall Islands (Nov. 4, 2015) Steel Worker 3rd Class Nathan R. Knittle, right, and Utilitiesman Constructionman John O. Cotton, both assigned to Naval Mobile Construction Battalion (NMCB) 1, move metal sheet that will serve as roof layer on a Pre-Engineer Building project on Kwajalein Atoll, Republic of Marshall Islands, Nov. 4, 2015. The project will produce a large warehouse for storage of valuable equipment and tools on Kwajalein Island. NMCB 1 is providing humanitarian aid to the Republic of Marshall Islands. (U.S. Navy photo by Hospitalman 2nd Class Isaac P. Cajinas)