 With Excalibur, I think they've taken what they developed back in those days and expanded upon it to neutralize Excalibur by cutting through its ability to home in on a particular target. And that, again, is to be expected. As a consequence, the other side has got to adapt and expect adaptation. And then last but not least, two other things come to mind. One is a concern, I think, that is raised in that particular article,