the ones who have been good, roy johnson, the first one was powerful in creating agency, and the mess of vietnam, hard to guess what makes a good darpa director, someone with a broader vision, beyond science and technology, i will think about the problems of warfare and how we solve that warfare. >> the big project, has darpa anticipated the russian hacking and misinformation campaigns all over the world. >> i don't think darpa anticipated it, the irony is that the internet, the creation of darpa has led to this new way of warfare. it is part of the problem. that should be a program. that should be a problem darpa could tackle, something of that scale. i am sure darpa has little programs on the side but thinking of this as a major threat i don't see darpa doing that today. to tackle problems that are really changing warfare like that. is it connected -- [inaudible question] >> i think the national security agency, the malware we read so much about, the national security agency gets a lot of credit for that. is there one more quick question? >> why did the united states not use atomic