From the legendary "Valley of Speed" at the Reno National Championship Air Races, comes the fasted piston Warbirds on the planet! Strega, Voodoo, Rare Bear, Dreadnought, Sawbones and Argonaut battle it out on the pylons at speeds up to 487 miles per hour in the Unlimited class heat race 3A, Saturday, September 19, 2015.