[anigbrowl]

No, not really. Quite a few successful coups have been essentially bloodless and relied on a combination of surprise and bluff. Napoleon's actual seizure of power was disorganized to put it mildly: https://en.wikipedia.org/wiki/Coup_of_18_Brumaire

Also, there are charges pending against people who had a stash of firearms in a hotel in Virginia, just across the Potomac, and planned to bring them over at a later stage. Firearms are largely banned in DC so the idea was to take over the Congress first and then establish a defensive perimeter.

Now, I didn't say it was a good plan.