When you spend a token, you merely exhaust it.. not discard, correct?

Rules Reference p.4, Defense Tokens:

When a readied defense token is spent, it is flipped to
its exhausted side. When an exhausted defense token is
spent, it is discarded.

For defense tokens:

• Defense tokens begin the game on their readied side. When a readied defense token is spent, it is fipped to its exhausted side. When an exhausted defense token is spent, it is discarded.

For command tokens

• When a command token is spent, return it to the supply.

Thanks to both, was looking at Vader and was trying to determine how powerful he really is. And first I thought you had to loose the token.