170513-N-DH124-341 FORT HUNTER LIGGETT, Calif. (May 13, 2017) Seabees assigned to Naval Mobile Construction Battalion (NMCB) 4 prepare to defend against simulated enemy forces during a field training exercise. The exercise gives Seabees the opportunity to practice and apply Seabee combat warfare skills, provide host nation security support and stay mission ready in a simulated environment intended to replicate in-country operations (U.S.Navy photo by Mass Communication Specialist 1st Class Rosalie Chang/Released)