As things subside a little and the immediate threat disappears, some of the processing of what actually happened occurs.

We scored too easy and at some point that was going to subside.

Just as a precaution. We don't believe that the substance poses an immediate threat to local residents. We haven't evacuated anyone.

Nothing that actually occurs is of the smallest importance

There were 400 of them, and they actually worked in the mine where this had happened,

A really good picture looks as if it's happened at once. It's an immediate image.