FEMA will be conducting a scheduled test of the wireless Emergency Alert System.

联邦应急管理局将按计划对无线紧急警报系统进行测试。

The nation's emergency alert system came under scrutiny today, after Hawaii's false warning about a missile launch.

因夏威夷误报导弹袭击，今天对全国紧急警报系统进行了检查。

On October 4th, hundreds of millions of cell phones across the US received a text message and that alert tone as part of a test of the National Emergency Alert System.

10 月 4 日，作为国家紧急警报系统测试的一部分，美国各地数亿部手机收到了短信和警报音。

Dallas had their emergency alert system hacked, allowing hackers to activate their 156 siren tornado alerts system, for an hour and a half.

达拉斯的紧急警报系统遭到黑客攻击，允许黑客激活他们的 156 警笛龙卷风警报系统， 持续一个半小时。