Keywords: US Navy 101116-N-1786N-037 Construction Mechanic 1st Class Aaron Doolittle, assigned to Amphibious Construction Battalion (ACB) 1, drops a chlorobe.jpg en CAMP PENDLETON Calif Nov 14 2010 Construction Mechanic 1st Class Aaron Doolittle assigned to Amphibious Construction Battalion ACB 1 drops a chlorobenzalmalononitrile CS gas grenade into an empty ammunition can for a chemical biological and radiological drill during the ACB-1 annual field training exercise ACB-1 is conducting its Tactical Warrior 2010 exercise training its Sailors in basic combat skills U S Navy photo by Mass Communication Specialist 2nd Class Bryan Niegel/Released 2010-11-14 101116-N-1786N-037 Navy http //www navy mil/view_image asp id 94461 U S Navy photo by Mass Communication Specialist 2nd Class Bryan Niegel PD-USGov-Military-Navy Marine Corps Base Camp Pendleton Riot control agents United States Navy training |