Snug down your tinfoil and take a look at this DU post. On September 21, Bush extended the National State of Emergency that he declared after 9/11.

That links to "Today in DC: Commandos in the Streets?"

The latter should send you to the store to stock up on extra heavy tin foil:

Today [9/21], somewhere in the DC metropolitan area, the military is conducting a highly classified Granite Shadow "demonstration." ...Granite Shadow is yet another new Top Secret and compartmented operation related to the military’s extra-legal powers regarding weapons of mass destruction. It allows for emergency military operations in the United States without civilian supervision or control.

...That's where Granite Shadow comes in. U.S. Northern Command (NORTHCOM), the military's new homeland security command, is preparing its draft version of CONPLAN 0400 for military operations in the United States, and the resulting Granite Shadow plan has been classified above Top Secret by adding a Special Category (SPECAT) compartment restricting access.

The sensitivities, according to military sources, include deployment of "special mission units" (the so-called Delta Force, SEAL teams, Rangers, and other special units of Joint Special Operations Command) in Washington, DC and other domestic hot spots. NORTHCOM has worked closely with U.S. Special Operations Command (SOCOM), as well as the secret branches of non-military agencies and departments to enforce "unity of command" over any post 9/11 efforts.

Further, Granite Shadow posits domestic military operations, including intelligence collection and surveillance, unique rules of engagement regarding the use of lethal force, the use of experimental non-lethal weapons, and federal and military control of incident locations that are highly controversial and might border on the illegal...