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A civil defense siren (also known as an air-raid siren or tornado siren) is a siren used to provide emergency population warning of approaching danger and sometimes to indicate when the danger has passed. Some (that are mostly located in small towns) are also used to call the volunteer fire department to go fight a fire. Initially designed to warn of air raids in World War II, they were adapted to warn of nuclear attack and of natural destructive weather patterns such as tornadoes. The generalized nature of the siren led to many of them being replaced with more specialized warnings, such as the Emergency Alert System.

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  • Civil defense siren
  • Alarm lotniczy
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  • Alarm lotniczy - jest to sygnał lub system sygnałów uprzedzający o niebezpieczeństwie napadu powietrznego oraz nakazujący natychmiastowe wykonywanie zarządzeń i rozkazów dotyczących obrony przeciwlotniczej. Sygnały alarmu lotniczego przekazywane są poza kolejnością za pomocą wszystkich środków łączności.
  • A civil defense siren (also known as an air-raid siren or tornado siren) is a siren used to provide emergency population warning of approaching danger and sometimes to indicate when the danger has passed. Some (that are mostly located in small towns) are also used to call the volunteer fire department to go fight a fire. Initially designed to warn of air raids in World War II, they were adapted to warn of nuclear attack and of natural destructive weather patterns such as tornadoes. The generalized nature of the siren led to many of them being replaced with more specialized warnings, such as the Emergency Alert System.
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