I just watched a show from 2009 on what would happen if D.C. was hit by a nuke.
There are trained military and local cops who are prepared for martial law. The training is all done under the guise of training for anything but a government crackdown.
Legislator to tea party: Get your guns ready for economic collapse
http://www.freerepublic.com/focus/f-news/3051109/posts
‘Havoc’ as HSBC prepares to close diplomatic accounts
http://www.freerepublic.com/focus/f-news/3051099/posts