(CNN) — We don’t yet know how heavy a blow Hurricane Isaac will deliver to the Gulf Coast when it hits. But mindful of the devastation that Hurricane Katrina left in its wake, Alabama, Florida, Louisiana, and Mississippi have declared states of emergency and evacuations have begun. Public officials and emergency managers are getting good at getting people out of harm’s way.

Unfortunately, where official plans are likely to fall short is in helping evacuees to quickly return to their storm-damaged communities and get back on their feet.