Why would we be waiting for the military to, "step up"? We shouldn't be hoping for the military to be anywhere near deposing a President. We're in a bad enough place as is, no need to go to a place that never, ever ends well and sets a deadly serious precedent.
If we're worried about him holed-up in the WH bunker threatening to launch nukes at California, I suspect the Secret Service agents who have been contracting COVID at an astronomical rate due to Trump's weekly, public therapy sessions with his cultists, would be very happy to drag him out to waiting police cars who will take him to an airport to be extradited to NY