being. david thanks so much. now we go to a retired commander with the los angeles police department. your thoughts. >> my thoughts from what i've been watching over the last several hours is the command-and-control component as a comparative for any critical incident could only look at specifically what's occurring across the country an active shooter law enforcement and the fire department's emergency medical services around the neighborhood have been concentrating on active shooter drills. command-and-control component we put in place as soon as possible to maintain situational awareness and to understand life safety destabilization and property preservation. we lin good thoughts. seems today as you look at