Is the US ripe for a coup?

[Jehanne]

Here's how I imagine it.  Trump gives an order to the Generals of the Armed Forces who refuse to obey it; he fires one or more of them but they refuse to resign.  Soon after, some federal court issues an arrest warrant for the disobedient officer, but when the FBI tries to serve the warrant, they are fired upon by the soldiers loyal to that General.  After that, all three generals of the Armed Forces declare their loyalty to each other and most of the troops under their commands follow them.  They then setup a US military command that is independent of civilian control, and any police agency that dares to cross them is fired upon using the massive firepower of the United States military.  Soon after the civilian authorities back down, as they are massively outgunned.  The three generals then declare limited martial law, exempting them and their men (and women) from the control of the US government.  They fire upon anyone foolish enough to cross them.