“His replacement (of the current commander)may let it grow to a disaster.”
If that happened, Trump could have a massive crackdown on dissenters. Sounds like the kind of thing Putin would do if he were in charge. Other questions. How is the head of the DC National Guard selected? How are the heads of the 50 other National Guards selected?
Head of the DC National Guard is appointed by the President, head of the State National Guards are appointed by the Governors of the States.
Generally by the state governors, IIRC.