Federal authorities are investigating after an air traffic controller on an overnight shift at McCarran International Airport in Las Vegas repeatedly gave incoherent directions and responses to pilots.

Federal authorities are investigating after an air traffic controller on an overnight shift at McCarran International Airport in Las Vegas repeatedly gave incoherent directions and responses to pilots.

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Las Vegas air traffic controller heard slurring words and giving incoherent instructions to pilots

Federal authorities are investigating after an air traffic controller on an overnight shift at McCarran International Airport in Las Vegas repeatedly gave incoherent directions and responses to pilots.