of isil and the idea of just acting violently indiscriminately is clearly of grave concern. it's a trend that things would suggest is increasing not decreasing. >> reporter: now, he's speaking in two climates after the garland, texas attack saying it was clear there was pledge to allegiance to isis and then afterwards isis respectively said they're working on their behalf. still unclear and two at the same time admiral rogers engaged capabilities nsa had that edward snowden exposed or possibly exposed. a case they want to make to try to get their side of the balance between privacy and surveillance taken up by congress. a key time for them but also just yesterday, chris, we saw isis affiliated hackers putting out a message on the internet saying they would be targeting the u.s. at some point down the line. unclear how capable they are but