Hmmm... D.C. is not a state.
Now what?
DC has a commanding general reporting to federal authorities, however, it doesn’t make a difference because only about 200 feet of the DC Beltway is in DC.
The Nat.Guard (not the miltia by they way) can only serve at the request of the state gov unless ‘activated’ and then is wholly federal but the Posse Comitatus Act is fed law and precludes the use of fed troops to enforce law.
That is why the Nat. Guard is used in riots and such under the orders of state govs.