critical. traditionally as you know we looked at 16 critical infrastructure sectors. given the interconnectivity of the world today, we're moving towards a look at essential functions, which might cross sectors. so what is the function that is true ly critical and how can we partner with the private sector to not only give them information, on known threats, but to help them anticipate threats before they get there. in terms of network defenders, we need to continue to connect them. as we see these threats propagate across the world as we saw with wannacry, the patching is extraordinarily important. i would say that the reason we did not have so many effects in the united states as we did in other places of the world was due to the good work of dhs and jeannette manfra's folks in making sure they communicated quickly with the private sectors taken. it is information sharing, making sure we're sharing in the right way, it is helping with vulnerability assessments and