Keywords: US Navy 040822-N-9712C-002 A Seabee assigned to Naval Mobile Construction Battalion Four Zero (NMCB-40), mans a machine gun after donning Mission Oriented Protective Posture (MOPP) gear during a simulated Chemical-Biological at.jpg en Fort Hunter Liggett Calif Aug 22 2004 - A Seabee assigned to Naval Mobile Construction Battalion Four Zero NMCB-40 mans a machine gun after donning Mission Oriented Protective Posture MOPP gear during a simulated Chemical/Biological attack NMCB-40 is participating in Exercise Bearing Duel 2004 designed to provide the unit with an opportunity to train in realistic field environments while preparing for contingency operations and future deployment U S Navy photo by Photographer's Mate Airman John P Curtis RELEASED 2004-08-22 040822-N-9712C-002 Navy http //www navy mil/view_image asp id 17955 U S Navy photo by Photographer's Mate Airman John P Curtis PD-USGov-Military-Navy Fort Hunter Liggett Naval Mobile Construction Battalion 40 Browning M2 of the US Navy Camouflage nettings Mission Oriented Protective Posture People wearing gas masks Operation Bearing Duel 2004 M40 Field Protective Mask |