Thanks for confirming you have absolutely no idea what you're talking about.
https://thinkprogress.org/katrina-timeline-90ec8a71fb99/
https://www.theguardian.com/world/2005/sep/03/hurricanekatrina.usa1
Relief efforts can go wrong and have gone wrong. They're not some idealist, superhero bullshit. They're run by real people who make mistakes, and may not be staffed, funded, or supplied enough to be as effective as necessary. Relief efforts *mitigate* damages. They do not reverse them.
https://en.wikipedia.org/wiki/Hurricane_Katrina_disaster_relief
It took five days for anything major like a boat to be shipped out there. Could more have been done? Sure. But to bitch about stuff taking 7 days when Katrina took 5 for anything besides evacuations to happen is just immature, especially considering the US would be way more organized in it's own country than in other ones.
Furthermore, when I said "casualties are inevitable," that does not mean "more people should die because of this" and how you came to such a ridiculous conclusion is beyond me. Shut your computer off, learn how to argue, and then come back.