180118-N-RD456-0594 CAMP COVINGTON, Guam (Jan. 18, 2018) Construction Mechanic Constructionman Gabriel McGraw, assigned to Naval Mobile Construction Battalion (NMCB) 4, replaces the idler pulley on a Light Service Support Vehicle (LSSV). 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 Construction Mechanic 2nd Class Jeremy Colbert/Released)