Mary-Kate Olsen

The best way to get a sense of what kinds of emergencies might present themselves in your community is by contacting local chapters of the American Red Cross or offices of emergency management in the region or state. Most large cities will have their own offices of emergency management.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.