"The siren tone that we heard on Saturday, this week, is what we call the attack mode," said Eric Rasmussen, director of ...

Air-raid siren sounds the warning. Air-raid sirens first sounded the warning in London in September 1939. They became an almost daily part of life in the capital a year later during the height of ...

This clip offers a specially-created montage of air-raid sounds, including an air-raid siren sounding the warning, the sound of aircraft and bombing, and ending with the 'all clear' siren.