‘Steamer’ was a nickname which, for some reason, the proles applied to rocket bombs. Winston promptly flung himself on his face. The proles were nearly always right when they gave you a warning of this kind. They seemed to possess some kind of instinct which told them several seconds in advance when a rocket was coming, although the rockets supposedly travelled faster than sound. Winston clasped his forearms above his head. There was a roar that seemed to make the pavement heave; a shower of light objects pattered onto his back. When he stood up he found that he was covered with fragments of glass from the nearest window.