There already is a U.S. Space Command - USSPACECOM. It’s the combatant command responsible applying war fighting assets from all service components (army, navy, marines, Air Force, and space force) in defense of the space domain. Similar to the combatant command USEUCOM is responsible for European defense by applying war fighting assets from all of the services. Space Command is the combatant arm, space force is the component responsible for organizing, training, and equipping space forces.

My hot take: space mining will be conducted remotely and likely highly automated. No need for human miners to leave the earth to make it happen.

I was thinking a flux capacitor, but fair point.