180103-N-UT800-0959 SASEBO, Japan (Jan. 3, 2018) Equipment Operator 3rd Class (SCW) Michael Finley, assigned to Naval Mobile Construction Battalion (NMCB) 4, uses a sled compacter to compact the aggregate preparing it for a concrete slab. 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. (U.S. Navy photo by Builder 3rd Class Dykes, Thomas/ Released)