what do we know about the father? >> reporter: that's certainly a valid point that you have. we are still looking into his father. there are a lot of circumstances. it is not clear if he was motivated himself or his father had somewhat of an influence. we do have another crew that is in the hickson area right now. we're trying to reach out to neighbors, family members and we are working to get you more details maybe to confirm that family association, if there is any other motivation behind the shooting. >> all right, jen. thank you so much for being with us as we continue tonight. earlier, about a week ago, we know that the fbi director james comey actually said he cannot stop isis-inspired attacks against our military indefinitely. watch this. >> isil says go kill, go kill of here's a list of military members you can go kill. go do it. we are stopping these things so far through tremendous hard work the use of sources, the use of online undercovers. but it is incredibly difficult. i cannot see me stopping these indefinitely. >> so how safe are you? the american people?