sadly 9/11. >> right. and i think it all comes down to whether or not a group like aqap or shababb in somalia or whatever al qaeda or al qaeda-like faction we're talking about has access to american operatives, people that could go past u.s. borders without generating any kind of alarm. and the reality is, if we look at these groups, that's exactly the kind of constituency, exactly the kind of audience they are recruiting. shabab in somalia, the man from seattle, washington, a former drug dealer who went to somalia and became a major anything. another one from alabama, a young kid from alabama. we don't know who's in yemen. so, i mean, really, it's not so much a question of explosives. it's really a question of access to operatives. these groups can get access to enough people to get past u.s. borders, they'll do whatever they can with those resources, whether it is a small attack or a major catastrophic attack. and we have to be prepared for both possibilities. >> evan, thank you very much. always great perspective and insight from you. i love talking to you.