When you are in a bad spot and fight back against a foe at close quarters, roll +iron; when you exchange fire at a distance, roll +edge.
On a strong hit, mark progress twice. You overwhelm your foe and are in control.
On a weak hit, mark progress, but you are dealt a counterblow or setback. You stay in a bad spot and must Pay the Price.
On a miss, your foe dominates this exchange. You stay in a bad spot and must Pay the Price.