The post mortem I'm reading indicated the media said "unconfirmed reports," and the media is inclined to blame the command center for not acting faster to correct the unconfirmed report.
The media was an unwitting part of the rumor mill, the megaphone part, a positive feedback loop where the word "unconfirmed" was quickly lost is the euphoria.
So they should have not gone with the information they were given?
Maybe I missed the media saying "unconfirmed reports"... I began watching the coverage just less than an hour into it and almost 2 hrs before a family member ran up to the CNN guy and said "there are no survivors! they are telling the families in the church!". Before that I saw no hint that it was unconfirmed other than my own curiosity as to why no officials were speaking on TV.
I flipped from CNN to MSNBC mostly because, at that time, FOX was running a rerun of Brit's show.
Maybe I just missed the "unconfirmed reports" part of the jubilation.