An impressionable 12 year old rode to the top of an Arizona hill one afternoon with an old Cowboy friend to check a windmill. A big storm was building and they needed to lock the blades down before the wind hit. When finished, they paused to watch the clouds darken and spread across the sky. As lightning flashed, the Cowboy told the boy to watch closely and he would see the devil's herd, their eyes red and hooves flashing, stampede ahead of phantom horsemen.