Don’t forget that the real military presence in DC is the Old Guard.
The Old Guard is not a bunch of REMF weenies either. The first prerequisite to be a Guard is to be an active-duty infantryman. And this isn't just a few dozen men, it's 2 battalions of a few hundred men each plus the HHC.
When I was still in the infantry, a memo had went out looking for volunteers to join the Old Guard. The list of requirements was impressive. I was 6'0" at the time, and I think I wasn't tall enough...lol.