The Red Bull Air Races are back for an eighth season, with new stops this year in Sochi, Russia, and Chiba, Japan—and with luxurious accommodations from which to view the action. For the races, world-class aerobatic pilots fly in fast, loud, challenging competitions, racing on a tight low-level course marked by inflated pylons. New rules instituted last year require all the pilots to fly similar single-engine propeller-driven airplanes, keeping the competitive emphasis on skill and speed. The season launches F…