Usually safe distance indicates binoculars and/or closeness to the proximity of the incident. You approach an incident upwind, uphill from any location, and there are various means to actually get to the scene. In more remote locations like what was indicated, that process might become very much challenged.
So if there is an indication of an identification number that's identified when we speak to CANUTEC, then initial evacuation distances or isolation distances, if there's more than one product involved.... That's where those.... If there's fire impingement, if there's environmental considerations like rivers, drinking water, or whatever, that's where the complexity and scalability of the incident grows immensely and very quickly. That's where we talked about the necessity for the train manifests and the MSDS sheets to be available very quickly. They are needed very quickly.