To offer some examples, a town or densely populated area has increased criticality in comparison to a sparsely populated rural area when a tornado tracks on the ground – more lives, property, and infrastructure at risk. An earthquake in a fault that underlies a dam that contains a large reservoir places at risk a critical resource, both in terms of water supply and in terms of its potential to inflict damage. A local or state or provincial emergency operations center located in a flood plain raises the level of criticality. A wildland fire that encroaches on the urban-wildland interface changes the exposure. A town located in a flood plain has clear exposure issues. When we consider the approach of a tropical cyclone, the flooding and beach erosion effects can vary based on when in the tide cycle the storm makes landfall – at high tide beaches and low lying areas face a surge that is augmented by the height of the tide.