The Prime Minister's broadcast informed us that we were already at war, and he had scarcely ceased speaking when a strange prolonged, wailing noise, afterwards to become familiar, broke upon the ear. My wife came into the room braced by the crisis and commented favourably upon the German promptitude ad precision, and we went up to the flat top of the house to see what was going on. Around us on every side, in the clear, cool September light, rose the roofs and spires of London. Above them were already slowly rising thirty or forty cylindrical balloons. We gave the Government a good mark for this evident sign of preparation, and as the quarter of an hour's notice which we had been led to expect we should receive was now running out we made our way to the shelter assigned to us, armed with a bottle of brandy and other appropriate medical comforts.
- From The Second World War by Winston S. Churchill