'Worse Than May 3, 1999'

When people in Oklahoma talk about Monday's tornado, they can't help but reference the last, deadly twister. In 1999, a powerful tornado struck, causing upwards of $1 billion in damage.

By all accounts, Monday's disaster was even more devastating. A major hospital, scores of homes, and many businesses were completely demolished by the storm. "If you walk through the neighborhoods, if you go through some of these business areas and certainly when you see the schools, it’s just heaps of debris. You can’t really even tell what was in that particular location," Oklahoma Gov. Mary Fallin said on CBS this morning.