Sorry, DL. A story simply mentioning the existence of the convention center doesn't make it.
Most of the stories were repetitive, and many were discussions of how conventions would have to move somewhere else, or even discussions of convention centers in places like Alabama.
To take those three examples you gave--and I went through that whole damn list, BTW--and somehow figure that these are typical the "coverage" that should have alerted Federal officials that terrible things were happening in the convention center, or even to draw the conclusion that thousands of people were even AT the convention center, is inane.
I'm done here. You're flailing.