170514-N-XJ502-013 FORT HUNTER LIGGETT, Calif. (May 14, 2017) Seabees, assigned to Naval Mobile Construction Battalion (NMCB) 4, build a sentry post during NMCB-4’s Field Training Exercise (FTX). The FTX prepares and tests the battalion’s ability to enter hostile locations, build assigned construction projects and defend against enemy attacks using realistic scenarios while being evaluated by Naval Construction Group 1. (U.S. Navy photo by Utilitiesman 2nd Class Jasmine Flores/Released)