Air-raid siren sounds the ‘all clear’ videoAir-raid siren sounds the ‘all clear’ An archive recording of an air raid siren sounding the 'all clear' ...

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 ...

But the sound he and his family heard Saturday ... First installed in the 1950s, they were developed for Cold War air raid warnings, but in the 1970s, the sirens transitioned to outdoor warning ...

Sirens sounded 30 minutes later to give the all-clear. The civil defense drills are taking place at the same time as Taiwan’s yearly Han Kuang war games, though they have been curtailed due to ...