There is often no air raid sirens.

The air raid sirens sound, and as Myra seeks shelter, she is killed by a bomb.

Cricket matches continued during the war although some games started late or were drawn due to late starts or air raid sirens.

Soon after the air raid sirens sounded this evening, a small caravan of cars drove down main streets, horns honking and music blaring from speakers mounted on their roofs.

As all hope is lost, raid sirens blare in the city as residents, including Linda and the children, run through the streets as buildings around them are blown apart by the falling bombs.

The Chrysler air raid siren.

The air raid sirens.

By the 1950s, they began manufacturing fire/air raid sirens, including the Thunderbolt and the Model 5, usually used for warning of air raids or fallout during the Cold War.

An air raid siren.

One prominent air raid siren was mounted on top of a mast located on the triangle of land at the junction of Nelson and Warren Roads.