The challenge of this "Mass casualty event" is that it happened not in one location, but all over a region. We have plans for marshaling resources at a scene and triaging patients at a single location. This event would have been much more difficult to allocate resources to and I'm sure it took a bit to figure out just what was going on in the community.
I share it here so that you might have this tucked in back of your memory if a similar event might happen in your own community, region or state.