Enough to put his hat in his shoes.
Done a lot of work around overhead cranes and there are so many other odd things that could happen the obvious ones should be avoided.
I have made many mistakes from the operators side and I would not put someone in that situation crazy all the things that could go wrong.
All this is coming from a guy who has run much equipment, is not afraid to take calculated risks, and is quite the adrenaline junky.
even the fact that the wires are not shielded, looks close to me.