I am IN NO WAY CONDONING this if it were done outside of the Incident Command (as it appears it was) but this is how modern technology could be used to recon these massive scenes WITHOUT putting responders at risk. Of course had there been an H2 car leaking and this drone flew over it, 4th of July would have come early!!!! I am sharing this with those who attend my HAZMAT course and hear my “war stories” of these types of large scale incidents. Just think about how big your HOT ZONE needs to be, you have cars in the river which is flooded and flowing at a very fast rate, and your zone is in a valley. Use the drone to ID any placards (or container(s) design), determine the physical properties of your HAZMAT(s) and then we are ready to develop our incident action plan and respond. In the words of Phil Robertson…. Happy Happy Happy!!