141008-N-SD120-003 FORT HUNTER LIGGETT, Calif. (October 08, 2014) Builder 3rd Class Zechariah Bukys, right, ensures the boards stay level while Builder Constructionman Nicholas Sievert uses a nail gun to fasten the boards on a Southwest Asia hut at Naval Mobile Construction Battalion (NMCB) 5�s field training exercise (FTX) on Fort Hunter Liggett. Using realistic scenarios in a field environment, NMCB 5 is being evaluated by Naval Construction Group (NCG) 1 on the final FTX in preparation for a deployment. The exercise challenges the battalion's command and control functions while maintaining the camp, building structures and bridges, and defending the camp and construction projects. Seabee battalions perform contingency construction, humanitarian aid, and disaster recovery assistance. (U.S. Navy Photo by Mass Communication Specialist 1st Class John P. Curtis/Released)