Ignore the Sirens

When the sirens blare in Cambridge this afternoon--three minutes of steady noise at 1:30 and three minutes of broken rising and falling noise at 2:30--it won't mean that Memorial Hall is on fire or that the Russians have come.

According to Edmund M. Burke, Director of Civil Defense for Cambridge, it will just be "Operation Alert for 1956." This is a test exercise that will send public officials all over the state scurrying for cover, but which needn't bother Summer School students at all.