In the shadow of Mount Rainier, a father pushes his son on a squeaky swing set. A small dog sleeps undisturbed in the middle of a dead-end road. The tall firs lining the main street whisper in the spring breeze.
One day, the peaceful hush of this small town will be broken by a rumble that sounds like a thousand freight trains. If everything works right, sirens will wail and the town's 4,400 residents will have less than 45 minutes to evacuate — or be buried by an avalanche of mud and debris tumbling off the flank of Mount Rainier.