DIEGO GARCIA, British Indian Ocean Territory (Dec. 15, 2017) Equipment Operator Dorian Macal (left) and Crew Leader Builder 3rd Class Connley Davis both assigned to Naval Mobile Construction Battalion (NMCB) 4, use a Philly rod (leveling staff) to survey the correct elevation of the footers. 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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