Hospital Corpsman 1st Class Jennefer English from Naval Construction Training Center (NCTC) in Port Hueneme, Calif., drops a smoke grenade just inside Naval Mobile Construction Battalion (NMCB) 3's defensive lines to simulate a chemical, biological or radiological (CBR) attack. NMCB 3 is conducting their final graded field training exercise (FTX), testing the battalion's command and control functions through a variety of realistic scenarios encountered during Seabee deployments. The Seabee battalion provides commanders and Navy component commanders with combat ready warfighters capable of general engineering, construction and limited combat engineering across the full range of military operations. Fort Hunter Liggett is the largest installation in the Army Reserve, with more than 160,000 acres of mountains, valleys, rivers, plains and forests. It provides maneuver areas and state of the art training facilities for active and reserve Army units, and for all components of the Department Defense and several allied nations. (U.S. Navy photo by Mass Communication Specialist 1st Class Chris Fahey, Naval Mobile Construction Battalion 3 Public Affairs/RELEASED).