Further, a defensive policy involves the loss of the initiative, with all the consequent disadvantages to the defender.
I don't think I've ever seen pie advertised. That's how you know it's good. They advertise ice cream and other desserts. They advertise the bejeezus out of yogurt, but I haven't seen one pie commercial.
The public should always be notified as soon as possible in the event of a leak or other emergency at a nuclear facility.