I would have to give you a little more detail on that, and I'll have to get some research for you. As an example, I think it was a year ago that we gave authority for a Danish vessel to be the first vessel to carry coal, I think it was, from the west coast of the United States through the various channels of the Northwest Passage as an experiment to see what the timing would be. We worked very closely with those vessels, because, as I should mention to you, we not only insist that we know that they're coming, but also that they're going to comply with the Arctic Waters Pollution Prevention Act, which is legislation of the federal government to cover those areas.
On June 14th, 2018. See this statement in context.