When I was a maintenance man for E&J Gallo winery in Livingston California back in the late 1970's one of my duties was operating a 49 foot Grove rubber-tired crane with a 20K pound capacity. Quite a machine! Pretty often, I'd be working out of sight of my load, which consisted of several people in a "man basket", doing maintenance work on pipe systems 40 feet off the ground or more. That kind of situation makes it very important to do exactly what the guy giving me hand signals wants to happen!
About the only kind of transportation I haven't worked on is a train. Cars, trucks, boats, airplanes, construction equipment, etc., yes. Hey, I'm only 75 years old- - - -maybe there's still time left to learn anothe skill or three!
One bit of trivia about a load shared by several fasteners, such as a cylinder head, or a wheel and tire assembly- - - - -the tightest fastener holds virtually all the load, up until the point where it stretches or breaks. Then the next-tightest one takes over until it fails. The mouth-breatiing impact wrench jockey at the local tire store who installs your wheels without using a torque wrench just might be making your vehicle a rolling deathtrap! A lot of the "wheel loss' claims against Firestone, Goodyear, and other franchise tire stores that I investigate involve progressive breakage of lug studs. Guess why!