Safety is always given the highest priority and it is the chief of the Fire Brigade who makes the call as to whether a display should be cancelled or interrupted. There is close collaboration with the Enviroment Canada office at Dorval airport, where they have Doppler radar which can detect both wind and rain. This was the situation on Saturday. A few minutes before 10pm, the winds exceeded the maximum 70km/h allowed, as well as being in a very unfavorable direction. The meteorologists at Dorval were able to advise that the strength of the gusts would diminish after 10 to 15 minutes, which they did, save for a couple of stronger gusts round about the time of the final commencement of the display.
I spoke to Darryl Fleming after the display and he told me that the fire chief was ready to cut the finale if it contained kamuro shells, for reasons of safety. Once nice feature of the FireOne software is that different shells and effects can be assigned a "safety number" from one to nine, based on their propensity to deposit burning stars and debris. Thus rockets are at level 9, due to their sticks and large kamuros are either 8 or 9, depending on their type. This allows the automatic elimination of all material which would cause a safety threat - the maximum threshold is set and everything above that number is removed from the firing list in real time.
The fact that it rained during the display helped the safety issue since it extinguished and burning debris before it could cause a threat to the audience. It was gratifying to hear that the Fire Chief was ready to cut the finale if it was to contain too many kamuros; in the end there was really only one right at the very end and the display concluded without incident, except for the ash and smoke, which is always to be expected, even at the best of times.
I firmly believe that the safety of the audience was given the highest priority throughout. In terms of cost, if the display had been postponed until Sunday evening, this would have been a relatively small loss since, compared to the potential injury claims if the audience had been put at risk. I think, in the end, the correct decision was made to proceed with the display, even though the late start was something of an anti-climax.
Just out of interest, I kept the piece of shell casing, that hit me as I was writing my report, as a souvenir of an exceptionally unusual evening!
Paul. |