In response to that, first of all, I'm not aware that we have conducted, certainly recently--in the last five or ten years, to the best of my knowledge--any joint exercises with the United States Coast Guard in the Arctic. We certainly conduct a great many joint exercises on the Great Lakes and in other parts of the country on issues of search and rescue and environmental response. I will certainly verify if that's the case, but I'm not aware of any joint exercises that we've done in the Arctic recently.
