Your understanding of emergency response measures is based on some pretty erroneous assumptions. These tens of thousands of people are not "easily accessible" by any means. And flippantly suggesting that a few tractor-trailers from Baton Rouge could have solved that problem is abvsolutely wrong.
I'm not talking about the people trapped in the city.
I'm talking about the thousands standing on the road. Like a bus stop. I am ignorant of relief procedures. I thought a road would be a good way to deliver supplies.