180223-N-SD965-155 CAMP SHELBY, Miss. (Feb. 23, 2018) Construction Mechanic 3rd Class Brandon Collins operates a M2HB machine gun during Naval Mobile Construction Battalion (NMCB) 1's field training exercise (FTX) at Camp Shelby. FTX provides a robust training environment where Seabee forces plan and execute multiple mission essential tasks including convoy security, force protection, and camp buildup prior to deployment. (U.S. Navy photo by Mass Communication Specialist 1st Class Brannon Deugan)