LAS VEGAS, NV - SEPTEMBER 11: Lightning flashes in the Red Rock National Conservation Area during a thunderstorm early on September 11, 2011 in Las Vegas, Nevada. More storms and cooler temperatures ... more 
LAS VEGAS, NV - SEPTEMBER 11: Lightning flashes in the Red Rock National Conservation Area during a thunderstorm early on September 11, 2011 in Las Vegas, Nevada. More storms and cooler temperatures are expected in the area over the next few days. (Photo by Ethan Miller/Getty Images) less 
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Getty Images | Photo By Ethan Miller / Getty Images
Sun, Sep 11, 2011 5:38 AM EDT