and robert hanson, an fbi special agent who spied for the russians for 20 years. our finest moment. we're not too proud of that. these are certainly the most widely known insider threat cases, but i think what's important is that the issue itself is far much more expansive and runs far deeper than any one of these single incidents or these isolated case studies. i think if we're ever going to have any real chance of combating the insider threat problem, we can't build our defense mechanisms against single case studies or specific actions. we can't just look at removable media activities because that's what bradley manning used. we can't only look at our system administrators or privileged users because ed yard snowden -- edward snowden had a technical background. we really have to try to attack the issue at the root of the problem and really understand what an insider threat means. so along those lines, the core feature of insider threat is betrayal. these are individuals who betray their positions of trust and use their positions and legitimate access for illegit

robert hanson is, obviously, the poster boy of insider threats for the fbi. he certainly had numerous red flags and indicators and risk factors along that 20-year spectrum that multiple people saw. one person saw his sexual deviance. another saw his history of security violations. another knew about how sensitive his position was and what access to to sensitive information he had. the problem is there was no one person that saw all of those things. and when you take this approach with those red flags and indicators, the red flags in isolation really don't mean much. it's the combination of those red flags. so that's why he went unnoticed for so long. no one person could kind of see all of this information in one place and make an objective assessment of miseriesing level. of miseriesing level. this is the last slide, but i guess i'll end the fact that the unfortunate truth that there is no silver bullet. i think a lot of people are looking for the one thing that you should be looking for, the one action, the one tool or technology that can solve this problem.

filmmaker robert stone, dale brick of the natural resources defense council, jim hanson of columbia university'snstitute and nuclear engineer michael friedlander. right before the break michael said nuclear power plants are only as safe as the people operating them. >> that's right. so what we should do first is look at the record. solar energy, for example, the record is two deaths per terawatt hour of electricity generated. nuclear power 0.5 deaths of nuclear power. people fall off roofs while they're installing solar panels. but i'm not against solar panels. i'm just pointing out that the nuclear is actually much safer. it has a very good safety record. and that's with old technology. >> dale, do you buy that? >> yeah. i just don't think it's credible to say that the radiation risk from fukushima and chernobyl and for anybody who reads the newspaper and pays attention to these issues is dim inizing cancer rates. even if you can't point to an individual person and say that person has cancer because of chernobyl, we know that there are more cancers out there. >> you believe that nuclear power i