Maybe it's my general unease about what I see coming from stuff like this. Maybe my mind won't allow me to crack... But whatever it is, may I offer a different, but equally disturbing option?

Is it possible something was detonated, or released in the area to ensure that nobody made it out alive? And that's the reason nobody is allowed to go there?

Wouldn't a hurricane be a perfect cover for a gaseous agent to be released?

Whenever the fed takes over and basically burns bodies and turns over the ground, then takes it all over, it certainly means they don't want anyone to know what happened.