Cities Ready Sirens As Terror Warnings
By TIM TALLEY
OKLAHOMA CITY (AP) - Cold War-era sirens may be revived as terrorism warnings. Cities including Oklahoma City, Chicago and Dallas have upgraded their outdoor warning systems with a type of siren that can carry voice announcements - an idea that officials say took on added importance in the post-Sept. 11 world.
Sirens have long been used for storm disasters, but now the Federal Emergency Management Agency is studying whether they can warn people of biological, chemical or nuclear attack.
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