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Broadcast a sound to these alarms. and the reason you had 156 of them going on for 90 seconds each, 15 different times, nobody's sure exactly how this was pulled off, but they didn't have to gain access to a computer. it seems like according to the smartest tech mind i've spoken to, seems like there was a combination of somebody having access to the codes, perhaps somebody in dallas havg access to the physical boxes, somebody knowing the exact frequencies. signs point to this if not being an inside job, at least having inside access. >> jenny, in terms of infrastructure hacks, obviously we all...

When you pick up the land line phone and there's two tones, that's a tone that municipal advertise might use to turn on an emergency alert system or control waters or like control a dam or flood control systems. the idea of these systems is that they were pre-internet, radio broadcast, so if there's a legitimate emergency, they can't be shut down. let's see all the power goes out, chances are you can broadcast a sound to these alarms. and the reason you had 156 of them going on for 90 seconds each, 15 different times, nobody's sure exactly how this was pulled off, but they didn't have to gain ...