Chopper - Plane Smackdown, Warbirds at Sunset - images from Oshkosh.

In an ethanol-powered showdown, Paul Teutul, Sr., designer and founder of the famed Orange County Choppers, and star of reality television series, "American Chopper," races airshow legend Greg Poe. Poe flies the ethanol-powered Fagen MX-2 aerobics plane, while Teutul rides his ethanol-powered Fagen Orange County Chopper. The race occurred Friday, July 31, 2009 at EAA AirVenture in Oshkosh, WI.  Click for more about this photo.

As the day ends, three World War II era P-51 Mustangs salute a breathtaking sunset at EAA AirVenture in Oshkosh, WI, July 30, 2009.  Click for more about this photo.

Each summer, Oshkosh, Wisconsin hosts the week-long Experimental Aircraft Association AirVenture, the world's largest airshow.  From July 27 through August 2, 2009, 578,000 people flew, drove, bused, or hithchiked to Wittman Regional Airport to be part of the aviation fun.  41,000 camped at the airfield, often under the wings of the 10,000 aircraft that flew in for the show.

AirVenture is a photographer's paradise, with colorful, dynamic subjects in action from sun-up to sun-down and beyond.

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