CAMP SHELBY, Miss. (Oct. 22, 2020) Seabees assigned to Naval Mobile Construction Battalion (NMCB) 1 simulate returning fire on an enemy aggressor during Convoy Security Element (CSE) training at Camp Shelby, Miss., Oct. 22, 2020. CSE provides a secure, tactical means of moving personnel and equipment autonomously in a contingency environment. NMCB 1 is conducting a rigorous homeport training plan to execute construction, humanitarian assistance, and theater security operation. (U.S. Navy photo by Mass Communication Specialist 1st Class Caine Storino)