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Outdoor Sirens, Low-Tech but Highly Effective, Bolster Colleges' Emergency Responses
Monday, March 24, 2008
Colleges and universities around the country, ever more mindful of campus safety, are installing outdoor sirens. The systems can blast spoken messages or tone alerts of dangerâ€”and one of the preset messages on many of the public-address systems warns: "There is a shooter on campus. Seek shelter immediately."