A Strong Hurricane Dennis Approaches Florida

The skies and streets are calm in the Florida Keys, but the scene is deceptive. In just hours, the winds and rain from Hurricane Dennis are expected to arrive.

The category four storm has forced thousands to flee the Keys. All tourists and some residents were ordered to evacuate the Florida Keys, and Gov. Jeb Bush has declared a state of emergency.

As Haiti is now learning, Dennis has devastating power. Heavy rains and walloping winds collapsed a bridge, killing an unknown number of people.

Massive mudslides are another threat. It's enough to make people nervous in Florida, where mandatory evacuations are already underway and everybody remembers the four hurricanes that came battering ashore last summer.