D.C. is a federal district. Their National Guard is under the President’s authority, not the Mayor’s. Their Metro Police under emergencies can be federalized under the President’s authority for limited periods.

Of all time?

Galaxian - I have an antique table top arcade version my aunt gave me about 20ish years ago that I enjoy.

Civilization - Hot seat multiplayer was awesome. Pikeman as active borders for your country.

Doom - Soundtrack alone is worth the experience