The current strength of the National Guard units in Washington DC is 15,000 personnel. That amounts to more than twice as many troops as are in Iraq and Afghanistan combined.
One of the states providing units to the Washington, DC Führerbunker is Pennsylvania, whose National guard is in possession of the US National Guard’s only Stryker brigade, the 56th Brigade Combat Team (SBCT). Here is a video of them pulling into a rest stop on their way to Washington, DC. (Note that the vehicles are all armed for combat, including mounting M-2 heavy machine guns.)
The units (as complete units or at least elements of those units) that I can identify as having been assigned to this mission are listed below:
The entire Washington, DC national guard
56th Stryker Brigade Combat Team
Troop B of the 102nd Cavalry Regiment
153rd Military Police Company
102nd Military Police Battalion
104th Military Police
Battalion
229th Brigade Engineer Battalion
160th Engineer Company
261st Theater Tactical Signal Brigade
198th Expeditionary Signal Battalion
1049th Transportation Company
262nd Component Repair Company
105th Airlift Wing
174th Attack Wing
166th Security Forces Squadron.
There may be other units, but this is what I have been able to find so far.