CAMP SHELBY, Miss. (Feb. 7, 2023) Seabees assigned to Naval Mobile Construction Battalion 133 (NMCB 133) and Marines from the 8th Engineer Support Battalion (8th ESB), augmenting NMCB-133, defend an expeditionary advanced base of operations during a simulated attack at Camp Shelby, Miss., Feb. 7, 2023. NMCB-133 is at Camp Shelby conducting a field training exercise operating as part of Navy Expeditionary Combat Command conducting the advanced phase of the force readiness training plan (FRTP). (U.S. Navy photo by Mass Communication Specialist 2nd Class Andrew Waters)