“If you had Guardian playing a siren tone that was tuned to match the frequency of the speaker and a police car playing as the siren tone next to it, Guardian would be three times louder,” he said.
The Seattle-based BRINC makes drones currently used by over 900 American cities, including Laredo, Texas, and Chattanooga, Tennessee, as part of the growing “drone as first responder” (DFR) system.
Typically, cities pay a few hundred thousand dollars per year per drone—with contracts reaching into the millions with more drones and more capabilities. A year ago, Newport Beach, California, announced a $2.17 million, five-year contract with BRINC for seven drones. (According to
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