170609-N-XK513-322 PORT HUENEME, Calif. (June 9, 2017) Petty Officer 1st Class Yuzhao Guan, left, and Petty Officer 2nd Class Matt Moore, both assigned to Naval Mobile Construction Battalion (NMCB) 18, work on a guard post building project. The guard post will be used by Naval Base Ventura County for base force protection. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ian Carver/Released)