Add Another Job I Could Never Do

Tongiht, Dirty Jobs with Mike Rowe are putting up a 500 foot radio tower in Dickinson, ND during the early winter or later winter months.  They are hanging on to a thick wire from a crane or tied onto the pole. 
This will add to my list of jobs I could never do: Fighter Pilot, window washer on a building more than 50 stories, hunter/slaughterhouse/animal pound worker where they kill animals, doctor(it's that science thing), accountant (math thing), politician (too honest) and actor (face and body made for radio).
I'm sure there are more, but these things are on the top of my list.