That is a good habit to have, Charlie, I do the same thing - reminiscent of my days fueling on the flight line: grounds first. My son is a tanker driver here in the great southwest desert, and that is the first thing that was stressed to him in his training, not just for the desert regions, but everywhere, just a bit more important here where it is so dry all the time. The one burn down that he has ever told me about was from improper grounding by a careless driver. I imagine Kurt, vara4, could tell us a few hair singeing tales.