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National Emergency Alert System Test (November 9, 2011)
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YouTubeAbsolutely Definite
National Emergency Alert System Test (November 9, 2011)
The Department of Homeland Security and the Federal Communications Commission held the first nationwide test of the Emergency Alert System. The test occured at 2 p.m. ET and was carried on all broadcast television, radio stations and cable and satellite television systems in the U.S. and U.S. territories. Wednesday, November 9, 2011.
已浏览 107.6万 次2011年11月9日
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已浏览 5.6万 次2024年8月15日
How the U.S.’s National Emergency Alert System Works | WSJ
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在视频中查找 03:16Why is FEMA testing the system nationwide?
How the U.S.’s National Emergency Alert System Works | WSJ
已浏览 27.7万 次2023年10月4日
YouTubeThe Wall Street Journal
WABC: Emergency Alert System test
1:03
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已浏览 4.8万 次2009年8月25日
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Spectrum National Emergency Alert System Test - 8/7/19
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已浏览 8941 次2019年8月7日
YouTubewxTV
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已浏览 22.2万 次2018年10月3日
YouTubeCal OES
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已浏览 469 次2023年6月4日
YouTubeArux Productions
Details of this week’s UK mobile emergency alert system test released | ITV News
2:27
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Details of this week’s UK mobile emergency alert system test relea…
已浏览 12.6万 次2023年4月21日
YouTubeITV News
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Emergency Alerts system test - Sunday 7 September 2025 at 3pm
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