coordinate with other countries to come to any sort of agreement on what the parameters are with these things that sounds like a difficult charge. and b, you, all three of you, identified cyber as the most dangerous, the most imposing threat that we face in this world right now. touch me about that. >> the first part is, it's very tough to work with other countries because we're so unique in our capacity and capabilities. let me do a quick jump to what you asked about. it's almost -- where i come from, it's like a 51-49 split. cyber and bio warfare. they're attacks from the unknown. as president trump used to say, it's a silent enemy. you have to address both. you made a good point about the future of warfare. we come a long way from cross bows, bows and arrows to gunpowder to nuclear, this is a new level of warfare that we have not seen before. we have to think about it. thinking hard about it.