ago, we know that he is from uzbekistan originally. that part of the world was actually responsible for a lot of foreign fighters showing up in iraq and syria. i don't believe that saipov himself was. these are the kind of attacks are those who are trying to be returned, these foreign fighters that want to make their way back on him, who have e.u. passports, american passports, they want to conduct, because the efficacy, the efficiency of terrorists doing attacks like this versus trying to engage in a complex sell, build high explosives, have a multipronged attack with weapons or they may get caught, firearms or they may get caught trying to purpose, there is a much greater likelihood of in the tag with these vehicles. that is why we are seeing so many. >> shannon: the nypd has a program and talked about today going to car rental agencies and places like where this truck came from and tried to say, listen, let's share information. if you find something that is troubling. call us first. >> they have had programs in