150625-N-ZZ999-005 TWENTYNINE PALMS, Calif. (Jun. 25, 2015)- Steelworker 3rd Class Gregory Hairston (centered), leads Seabees assigned to Naval Mobile Construction Battalion (NMCB) 4 during vibrating concrete placement at Camp Wilson in Twentynine Palms, Calif., Jun. 25. The project is one of four being completed during the Integrated Training Exercise (ITX) to improve living standards for more than 800 personnel occupying Camp Wilson in Twentynine Palms. (U.S. Navy photo by Engineering Aide Constructionman Alicia Pia De Guzman/ Released)