Trying to figure out where they will hit. New York and California have the most electoral votes and could swing the election so the attack will either take place in New York City or in LA or SF.
NY and CA are already in the Dim electoral vote column.
If your theory is correct, an attack in the heartland, e.g. Ohio, would be most effective.
However, I believe most Americans would react in the opposite way that a plurality of the Spanish voters have.