The Red Bull Air Races came to the San Francisco in October, 2006. You’ve got to see this thing to believe it. These planes do some gnarly maneuvers around the giant inflatable pylons out on the bay, occasionally clipping a pylon. The planes are mostly the Extra 300L and Extra 300S, but there is also the MX2, Velox Revolution 1, and Zivko Edge 540.
I brought the camera out to the Friday qualifying rounds with very gray skies as a backdrop: