If Biden called for the guard to protect DC already then he’d be giving ammo to the Republicans who are literally campaigning on the idea that the Democrats intend to steal the election. Why would Joe do exactly what they want? He’s tell you, right now, that he knows Trump intends to be violent. He simply needs to keep saying this until Harris is called the winner. Then he can bring in the biggest fucking tanks they’ll let him drive on the asphalt.
I think this is probably him starting to connect those dots for the public. His immediate publicity regarding SCOTUS reform following dropping out was the first hint. He understands what they’re doing.