Keywords: US Navy 030210-N-1485H-001 CBR Defense practice.jpg en Naval Base Ventura County Calif Feb 10 2003 -- Seabees assigned to Naval Mobile Construction Battalion Forty NMCB-40 practice changing out air filter canisters to ensure proper seal and maximum protection NMCB-40 is home-ported at Naval Base Ventura County and is currently conducting various training exercises to include Chemical Biological Radiological CBR warfare scenarios U S Navy photo by Photographer's Mate Airman Lamel J Hinton RELEASED 2003-02-10 030210-N-1485H-001 Navy http //www navy mil/view_image asp id 4478 U S Navy photo by Photographer's Mate Airman Lamel J Hinton PD-USGov-Military-Navy Naval Base Ventura County Naval Mobile Construction Battalion 40 M40 Field Protective Mask MCU-2/P Protective Mask Males wearing gas masks |