what role can the military play? a lot of very important issues, and issues that this exercise intended to put on the table so they could be discussed, if not resolved, before there is a real-life cyber attack of this magnitude. >> i love the exercise. appreciate it. that's good stuff. thank you. let's bring in suzanne simons with our fact check desk. suzanne, look, how worried -- your team went to work on this. how worried are officials about the possibility of a real -- when i say real, we're talking about a major cyber attack. >> right, absolutely. well, national intelligence director dennis blair talked about this in his annual threat assessment. he said a successful cyber attack against a major financial service provider could severely impact the national economy. so one of the things they're looking at is how it would have an economic impact on obviously americans. it's not going to be the scale of a physical attack like on 9/11 but the economy could take a big hit. >> yeah. would we know, would we know who the likely culprit is behind a