 So the post office charged him their long-distance rate, which I think was kind of funny, and I think they were able to promote that idea to get press about what they were doing. And he sent this message to Mars and fully expected a response. And this was covered by newspapers around the world. This ended up being a pretty big story. And, of course, he didn't get any message back. And he tried it again two years later. Mars was in opposition about every two years or so.