180124-N-JQ001-009 GULFPORT, Miss. (Jan. 24, 2018) Steelworker Constructionman Kaeleigh Ehlert mans a M240B machine gun during the Naval Mobile Construction Battalion (NMCB) 1 detachment security exercise at Naval Construction Battalion Center Gulfport, Miss. The exercise focused on adequately securing a site to facilitate mobility and sustainment for the area of operations in preparation for an upcoming Field Training Exercise. (U.S. Navy photo by Mass Communication Specialist 3rd Class Alexa Trafton/Released)