Along these lines, back in the stone age, when I was a teenage stunt wannabe, as oposed to an OF wannabe, a pair of guys showed up at the school yard while several of my buds and I were flying. Billy, the one in the wheel chair, suffered from a disease that made his growth stunted, and his bones very brittle, and easily broken.
His buddy, who's name I've forgotten over the years, wasn't a flier, but was a great friend to Billy. Though he didn't fly, he would turn Billy's chair while he flew. Billy learned the stunt pattern, and his bud learned where to turn, stop, or backup, so Billy could fly. Billy actually got pretty good at stunt, considering what he was overcoming. We even flew combat, at times. I'll always remember the time we all got tangled up, falling all over the place, laughing like fools. Fortunatly, Billy wasn't injured in this pile up.
I don't know what happened to Billy, I last remember seeing him driving a car that was 'specially setup for him. I like to think that cars and girls seduced him away from the flying field, rather than the eventual progress of the disease he fought so gallantly agianst.
I've always looked for someone in a wheel chair watching the stunt circle whenever I'm close to the area I grew up in.