180220-N-NO818-0001 YOKOSUKA, Japan (Feb. 20, 2018) Construction Electrician 2nd Class Gerald Roberts, assigned to Naval Mobile Construction Battalion (NMCB) 4, connects the electrical wiring in a junction box on the interior of the Pre-Engineered Building. NMCB 4 is the forward deployed pacific NMCB ready to support major combat operations, humanitarian assistance/ disaster relief operations and provide support to Navy, Marine Corps and joint operational forces. (U.S. Navy photo taken by Steelworker 2nd Class Jeffery S. Boerma/Released)