like langley, chanute would never try himself, he had somebody else do that. the one who did do a lot of gliding and was really the pioneer of gliding was otto lillienthal, a german, and he was killed. brian: we have some video of that, let's watch. [video clip] >> when you look at this picture, you can see one of the great problems lillienthal faced he was able to build wings that would lift the weight of his glider into the air. one of the important contributions that he makes are to be found in photographs like this, and people around the world saw pictures of this guy in the air like this, you could no longer doubt that the age of flight was about to dawn. but when you look at this picture, you can see his problem. he has been flying along, coming toward us, and a gust of wind perhaps has struck his right wing and lifted it. the only way he has to control his glider is to swing his own weight to that side of the airplane. brian: who was that? david: i don't know. he is hanging from the glider, and he cannot control it sufficiently. they saw that that was a

brian: there is another name chanute air force base in illinois. you write about a guy named chanute. who was he? david: he was born in france. he was french, but came to america. he was one of the preeminent civil engineers of his day, a great bridge builder, a railroad builder, who took an active interest in flight. in particularly, gliding. it begins with gliding. like langley, chanute would never try himself, he had somebody else do that. the one who did do a lot of gliding and was really the pioneer of gliding was -- and he was killed. a german. in these glider experiences. brian: we have some video of that, let's watch. and you can explain who otto -- he was a german? david: yes. brian: let's watch. [video clip] >> when you look at this picture, you can see one of the great problems he faced he was able to build wings that would lift the weight of his glider into the air. one of the really important contributions that he makes are to be found in photographs like this, and people around the world saw pictures of this guy in the air like this,