Regarding to my comment of NPR

I'd like to post my comment on my blogger about the below " Corps's negligence caused Katrina flooding ". That's because I couldn't add any comments to NPR.
I need to practice my writing. I got some advices from my dear teacher,Ms Sarah,.
Pls refer to the below "Regarding to Corp's Negligence Caused Katrina Flooding".
There are many natural disasters around the world. Whenever we experienced them,we could be easily helped by much assistance form soldiers. The people who were helped had no opportunity to appreciate the Corps for their work. It's a common fact. Though some people gave their hands to the victim, their endeavor made them suffer. If it's real, who can help them? I think criticizing the helpers is easy, but helping the sufferers is hard.