The major thing about responding by being there is, of course, having the ability to do something about it. When we see police on the road, their just being there is part of it, but the fact is we know there is a penalty.
Somebody made the observation, of course, that deterrence didn't require the use of fighter aircraft, but the reality is that was because deterrence was successful. The Soviets ultimately made the decision that if push came to shove, presumably our aerospace, our air power with the NATO alliance, would be sufficient to possibly cost them in terms of any invasion. In other words, yes, we never utilized them, but it was that potential to actually utilize them that was so critical.