One reason for having a communication plan in conjunction with a risk management plan in a high profile project is that you will be better able to control who has what information - when. By controlling who knows about different risks, you can track down media links simply. Also, by keeping control over the risk information, you can avoid panic in cases where some large problem is very unlikely to actualize. People have a tendency to freak out when they hear the word, "risk," no matter how small the risk actually is.