launching a new war room, so it can strike back. roughly reporter: we went behind downloads doors to see how it will work. the goal, prevent another 2016, when russia-linked accounts spread misinformation to millions of facebook users. inside the war room, two dozen teams from security from instagram, representing 20,000 facebook employees, soon to be working 24/7 to track suspicious behavior. how much pressure do you feel right now? what we feel is a profound sense of responsibility and we take this work really, really seriously. reporter: facebook is running drills to prepare for the worst, misinformation attacks attempting to sway your vote or suppress voter turnout. we re monitoring the amount of political content in the u.s. that might be of foreign origin. so one of our dashboards here actually monitors that and sets off an alarm, if we start seeing a spike if that kind of activity. reporter: facebook s war room is a direct response to dealing with a long list of