It will soon be five years since Charles Coe's accounting firm office in Metairie, a suburb of New Orleans was left in a pile of rubble by Hurricane Katrina, whose effects are still seen in the barren landscape of the city's Ninth Ward. Coe learned a lot about dealing with doing business during a natural disaster. And asked about the lessons, he gave a list that omitted many of the usual cautions about disaster planning and recovery.