170609-N-XK513-153 PORT HUENEME, Calif. (JUNE 9, 2017) Petty Officer 2nd Class Yuzhao Guan, assigned to Naval Mobile Construction Battalion (NMCB) 18, trims a wood beam for 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)