Join us mid-day Tuesday, April 23, in Madison to hear from experts in Wisconsin who are helping to define the future of aviation through their work. Panelists are Jon Heup, president of Racine-based DeltaHawk Engines, an aircraft engine manufacturer; and Dave Kettner, president of Virent, a bio-based fuel company in Madison that recently powered a flight from London to New York using only 100% sustainable fuel.