lol. all the guy did was jump on the back of the plane, which wasn't that high... plus he is a basketball player... who can obviously jump high. But then used his body weight to keep the plane from falling over the side. That doesn't seem very extreme to me. Planes, are heavy, but not as much as you would think. Balancing the weight didn't even cross my mind as unrealistic... because that's what I would have tried to do.