Police Chief Gary Swindle says of the city, "We're very prepared, and the siren system is something that the city did several years ago to enhance our ability to warn the citizens of Tyler."
Spread all over the city are 30 warning sirens. The cost: $750,000 to keep the city safe.
The tornado signal is a constant tone.
In these days of high threat of a terror attack, the city wants folks to know the other signals as well. The civil defense warning is a wailing tone.
"If the threat were to be specific to Tyler, and we feel that to be a very low possibility, then we would immediately activate the emergency operations center," says interim fire chied David Schlottach.
The hazardous materials disaster warning is always a possibility, it's alternating high and low tones.
Chief Swindle says the city has planned for the worst. "We are very comfortable where we are today in how we'll be able to respond to an emergency."
Chief Schlottach says, "If you could be ready for an incident like that, the City of Tyler is very prepared. Will there be places where glitches occur? Sure, there always can."