A few years ago I was touring an American Air Force base where they have housed nuclear missiles and B-52 bombers for many years. Along the way, the briefing officer told me something that made me very happy that the Cold War between us and the Soviet Union is history. Because it turns out that the Cold War almost got a whole lot hotter. My host told me about a couple of instances during the 1970s when our planes thought the U.S. was about to be under nuclear attack. In one case, the tracking seemed to prove that, so our pilots scrambled into their bombers, armed with nuclear weapons, and took off to retaliate against the Soviet Union. Obviously, that never happened, but the planes were actually in the air. The problem was in a little computer chip that had created an error in communications. It's pretty scary. There could have been bombs dropped, based on erroneous information.