the core of the nation's capital right now looks more like a military base. Armed soldiers and police standing guard around the clock miles of security fencing streets barricaded the National Mall, where hundreds of thousands usually gather for the inauguration. Shut down. I'm sad about it. I have to tell you that that it looks that way. I'm committed to making sure that we get our city back. Federal agents continuing to monitor threats of violence from right wing extremists and Internet chatter suggesting Washington may not be the only target. All 50 state FBI JTTF sin The four territories are working 24 hours a day to pursue every lead, every credible threat. State capitals across the country. We already stepping up security after warnings about armed protesters gathering through the weekend way have SWAT teams and, uh, sharpshooters on stand by the deadly takeover of the capital. And it was just chaos. It was just pure chaos and the words of officers on the ground There. Guys were trying to grab my gun, and they were chanting like killing with his own gun. Graphic and painful reminders that a peaceful transition of power right now requires an unprecedented level of protection protection that D. C s mayor today stressed, will be in place for a long as necessary after Wednesday's inauguration. Jay Gray, NBC News Washington.