Air Raid

At the sound of the red alert, a wavering, long, loud wail, scheduled for 10:20 a.m. today, all students are warned they must stay inside, preferably in a cellar, or go to designated shelters if they are on the streets. All vehicles must be stopped where they are, and their occupants or riders must head for protection. The alarm will last for ten minutes, until 10:30, but no one should leave shelter until the sound of the all clear--a series of short blasts.