'Lighting a match in a tornado' is one of multiple feats for propulsion center

When Walter O'Brien was a young boy, he recalls a moment of complete exhilaration when he was able to design and build a balsa wood airplane model that actually flew from his parents' front porch, across the street, and land on the neighbor's deck. That young boy of 10 is now in his early 70s, but he says he remains as excited about his engineering prowess now as he was then.