The aim of the drill was to actually test the cooperation between the national authorities, the neighboring companies and of course ourselves Advantage of having such a machine is that we can have a clear picture optical and thermal from the site and thus we can communicate better with the authorities and our central offices not based only on audio communications but on having a picture and when we have a thermal picture we have data as well about the magnitude of the incident. The tethered drone gives us the capability of flying for more than the battery life meaning half an hour. So in reality in our preparation and actually in the drill in question the drone was flying continuously. Having a drone is an asset that can aid us in making the right decisions on time..