Ethanol-fueled airplanes are on the program for an air show at the Sioux Falls Regional Airport this weekend.

The Vanguard Squadron of Sioux Falls is a four-plane formation group that flies in air shows across the country. I had a chance to meet the entire squadron last week in Sioux Falls at the Broin Companies for media training. Here is a short interview I did with one of the pilots, Steve Thompson, who talks about why they have been using 100 percent ethanol in their planes since 1993. Thompson Interview (1 min MP3)

The Vanguard Squadron, which is sponsored by the Broin Companies, will also be appearing at the 2006 EAA AirVenture next week in Oshkosh, WI.