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COMING UP:Share Opener Variant 3



llas residents got an unexpected wake-up call Friday night when all the city's 156 emergency sirens were set off just before midnight. Officials say a hacker was to blame.>> It sounded like an air raid. I knew there wasn't severe weather, checked to see if there was severe weather.
When there wasn't, I thought, we need to get out of here. The blaring sirens wailed for about 90 minutes and set-off widespread panic and confusion as people flooded 911 operators with thousands of calls.>> I finally had got someone on the line for 911 in Dallas and she said, well, we don't know what's going on.
And I said, okay. I said, well, what does that mean? And she said we don't know.>> Engineers had to manually shut down the sirens that are normally used to warn of tornadoes and other severe weather. A city spokesperson says officials are working with the FCC to track down the person responsible.