DIEGO GARCIA, British Indian Ocean Territory (Dec. 15, 2017) Builder 2nd Class Christopher Moore assigned to Naval Mobile Construction Battalion (NMCB) 4, prepares for concrete to be poured in the footer. NMCB 4 is forward deployed to the pacific, ready to support major combat operations, humanitarian assistance/disaster relief operations, and provide general engineering support to Navy, Marine Corps, and joint operational forces. ( Navy

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