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LAS VEGAS, NV - JULY 02: Lightning flashes west of the Mandalay Bay Resort and Casino (L) and the Luxor Hotel and Casino on the Las Vegas Strip as lights streak from an airplane taking off from McCarran International Airport on July 2, 2016 in Las Vegas, Nevada. Two days of monsoon thunderstorms brought strong winds, hail and heavy rain to parts of the valley causing street flooding and power outages. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - JULY 02:  Lightning flashes west of the Mandalay Bay Resort and Casino (L) and the Luxor Hotel and Casino on the Las Vegas Strip as lights streak from an airplane taking off from McCarran International Airport on July 2, 2016 in Las Vegas, Nevada. Two days of monsoon thunderstorms brought strong winds, hail and heavy rain to parts of the valley causing street flooding and power outages.  (Photo by Ethan Miller/Getty Images)