...because that was where the phenomenon was reported
I think HC addressed that quite well
Well firstly, if you look at the number of offshore oil support flights / hours per year, and then the number of triggered lightning strikes - around 1 or 2 a year on average IIRC, and then look at the number of onshore mil SAR flights / hours per year, you will see than on probability alone it is not surprising that there has not been a mil SAR triggered lightning strike
But, I agree with your last point
