391 People of 108 Britain must learn this IF YOU KNOW. exactly where a bomb fell what time it fell what the bomb just missed how many aeroplanes there were what they were trying to hit which direction they came from which district they were over KEEP IT TO YOURSELF and make others do the same No matter how many other people know things too, no matter how true it all may be, before you talk remember this — IF IT'S TRUE the enemy can use it, IF IT'S NOT TRUE the enemy is using YOU JOIN BRITAIN'S Silent Column the great body of sensible men and women who have pledged themselves not to talk rumour and gossip and to stop others doing it THIS ANNOUNCEMENT IS ISSUED BY THE MINISTRY OF INFORMATION IN THE INTERESTS OF NATIONAL SAFETY.