But that's not the Berlin Wall that is in kind of your imagination. That's going to be built starting on August 13, 1961 in Berlin itself. Now there were some pros and cons for kind of keeping Berlin open. It was open for a decade. And number one is they were building what was called the Berlin Outer Ring. They needed train service to kind of diverge itself around West Berlin, so they couldn't just close the border during that time period. And during that time period there was also kind of the thought that maybe we should let some of these people go if they don't want to be communists.