Not true. The crisis itself is a combination of local mismanagement of levy and educational funds for the past several decades combined with Mother Nature and capped off by roughly a third of the able-bodied population that **chose** to remain in place when they had been ordered to evacuate.
Thus, contrary to your inane claim, answering your "one question" would not have averted this crisis.
...And where do you go and how do you get there? You walk **away** from the disaster area to any area of civilization that is connected to our infrastructure grid (e.g. food, water, sanitation, electricity, medicine, roads, phones, law/order, etc.).
Remaining in a lawless disaster area without food/water is as idiotic as "riding out a storm" when you've been given days of advance notice to evacuate. It's repeating your earlier mistake, writ large.
Likewise, shooting at the rescue helicopters and boats that are being sent to aid your evacuation is a pretty large mistake, too.
My family there has told me that some citizens have taken to carrying sidearms just to go to the store because of fear that looters are already there in Baton Rouge.