Aerobatic plane racer keeps 'pushing the envelope'

U.S. pilot Kirby Chambliss files with his Edge 540 V3 aircraft during the qualifying session of the Red Bull Air Race World Championship in Budapest, Hungary, July 4, 2015. REUTERS/Laszlo Balogh

ELOY, Arizona (Reuters) - Hanging on the wall of Kirby Chambliss's sterile hangar is a laminated Sports Illustrated article with the attention grabbing headline "One Mistake and You're Dead."

Below is a picture of Chambliss in an aerobatic plane flying upside down about 60 feet above the tarmac. If you look closely you can see him smiling.