Keywords: US Navy 050708-N-7615S-014 U.S. Navy Seabees assigned to Amphibious Battalion One (ACB-1) prepare for a modified Mission Oriented Protective Posture (MOPP) Level 4 during a Chemical, Biological, and Radiological (CBR) drill.jpg en San Diego Calif July 8 2005 - U S Navy Seabees assigned to Amphibious Battalion One ACB-1 prepare for a modified Mission Oriented Protective Posture MOPP Level 4 during a Chemical Biological and Radiological CBR drill ACB-1 is currently conducting training exercises in preparation for upcoming Joint Logistics Over the Shore JLOTS operations U S Navy photo by Photographer's Mate 3rd Class Danielle M Sosa RELEASED 2005-07-08 050708-N-7615S-014 Navy http //www navy mil/view_image asp id 26169 U S Navy photo by Photographer's Mate 3rd Class Danielle M Sosa PD-USGov-Military-Navy Naval Base San Diego in the 2000s Joint Logistics Over The Shore United States Navy Seabees Mission Oriented Protective Posture People wearing gas masks M40 Field Protective Mask |