With Johnson at halfback and Tony Richardson at fullback, the Chiefs should still be okay on their running game. It's interesting that Len Pasquarelli came up with the story about having a good backup running back to pull the load. Johnson was specifically mentioned.
Still, the Chiefs have to worry about their injured secondary, which is already struggling when healthy. I hope Patrick Surtain makes it back this week. He makes a huge difference in the backfield.