180102-N-NO818-001 YOKOSUKA, Japan (Jan. 02, 2018) Steelworker 2nd Class Erik Grassauer, assigned to Naval Mobile Construction Battalion (NMCB) 4, secures trim to the exterior of the Pre-Engineered Building (PEB). 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 Steelworker 2nd Class Jeffery S. Boerma/Released)