DIGGING DEEPER: Federal authorities probe illegal drone use over Bighorn Fire

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TUCSON - Crews battling the lightning-sparked Bighorn Fire have been dealing with high temperatures, windy conditions, and other hazards.
They've also faced another threat - people illegally flying drones near the fire.
The Federal Aviation Administration has placed a Temporary Flight Restriction, or T.F.R., in the airspace above and around the fiFirefighters tell News 4 Tucson, aircraft being used to stop the fire's spread generally fly at very low altitude