World War 2 Air Raid Siren Alarm Sound Effect ~ Free Sound Effects April 23, 2014 by Soungle Sounds SoundEffectsFactoryWed, April 23, 2014 3:13amURL:Embed:The classic modern world war 2 ww2 emergency air raid siren sound effect. By sound effects. Subscribe for more Sounds! http://bit.ly/TiIuFz Extras Channel!