Tony Stewart wins at Las Vegas
Kobalt Tools 400
Credit: Getty Images for NASCAR
LAS VEGAS, NV - MARCH 11: The United States Air Force Thunderbirds fly over during the national anthem prior to the start of the NASCAR Sprint Cup Series Kobalt Tools 400 at Las Vegas Motor Speedway on March 11, 2012 in Las Vegas, Nevada. (Photo by Ronald Martinez/Getty Images for NASCAR)
