"Even if you give the Armed Citizenry 100% credit, you have to ask how they'd beat the US Army today?"
Members of the United States armed forces are also CITIZENS of this land. Each of them has a home, located in some city or town, located in some state or another. Each of them (well, the overwhelming majority, anyway) has loved ones, whom they probably value more than they value the US government.
I'll remind you of General Robert E. Lee, who didn't want to see the states fight each other - but decided that if there were to be a fight, he would fight for his home state of Virginia.
If revolution should happen, you cannot rely on the Army, the Navy, or the Air Force to remain intact as fighting units, to be used against the people of the United States. Nor can you rely on the government's ability to retain control over all the hardware, command infrastructure, or much of anything else.
This. This is what I never understand about the conspiracy theorists -- from the "government covered up Roswell types" to the gun toting nut jobs in the NRA -- the part of their advocacy that I find so distasteful is their refusal to recognize that the American government is made up of Citizens. From the federal employees to the military to the police, in America, we are all citizens first. As a formal federal employee, there was never any question that my allegiance was to the people. (Don't get me wrong -- as a paper pusher, this was unlikely to have tangible form, but still....)
Do we really think that our military would do what the Chinese military did in Tienanmen Square? Yes, there have been individual incidents of government-sponsored violence against the people (Kent State, battles against Segregation, etc.) where people in uniform have forgotten that they work for the people --- but those incidents are (a) limited in scope, (b) rare, (c) generally recognized as mistakes after the fact; and (d) largely repudiated by the country as a whole. I'm not trying to whitewash American history -- it's complicated and not always pretty. But I see no evidence that some shadowy element of the federal government is going to swoop down and seize our "liberty." Our volunteer citizen military in particular is about as freedom loving as they come, and I have zero doubt that a coup would fail spectacularly as soldiers recognized what was happening.
And then we have this. *face palm* Really? I think of little of DHS as the next guy, but do we really think they are traitors laying in wait? Good grief. They are just citizen-employees, like every other federal employee.
For this reason, and others, the Department of Homeland Security was formed. The government hopes to retain control of DHS if and when the shit hits the fan. Unfortunately for the government - DHS consists of mostly incompetent buffoons, far less capable than agents from any other agency. Further, the loyalty of Napolitano's troops remain untested.
Anyone can sit around and make up scenarios about how a revolution would evolve, and the results of said revolution. History proves one thing: civil wars are fucking MESSY!!