york. what does this mean to you as someone who spent so much of your career trying to stop terrorism in the united states? what does it mean to you the death of al-baghdadi? >> it's a huge victory. it's a great tribute to the men and women who fight this battle who fight terrorism every day across the intelligence and law enforcement communities. it by no means means the firefighter fight is over. we know isis use of the internet to the new level. they use figures like al-baghdadi to create this myth of a violet death cult in syria. that drew tens of thousands of people to support them. those folks are still out there whether they're here in the united states tracking isis through social media or across europe or in the middle east. those are the folks we have to worry about.