The 4 year state indentured apprenticeship I served earned me a journeyman card, the job title on the payscale page of the union contract said I was a journeyman utility mechanic. Four years of full time college level automotive education, simultaneous on the job training (working in the shop as an apprentice mechanic), and getting sent to GM schools in Portland, Oregon, Altec schools in several places locally, and a week of factory training in Saint Joseph, Missouri, mobile hydraulic training and certification by the Fluid Power Society as a Mobil Fluid Power Specialist, Detroit Diesel DDEC school, Allison transmission school both at Pacific Detroit Diesel, Washington State Certified Gas And Diesel Emissions Specialist, and tons of other stuff I can't remember anymore.
My tool kit when I worked at the electric utility.
I worked on everything they had, cars, pickups, vans, medium and heavy duty trucks trailers, trailers with stuff on them like portable substations, material handling equipment, snowmobiles, even a 1936 Chevy Pickup.
All skills automotive related were used, as well as metal fabrication and body and paint work. Minor and major teardowns, even complete fabrication of a line truck body (the part behind the cab that has the bins and steps up to the mounted equipment) as part of my apprenticeship.
Mostly I did manlift maintenance and repair.
Like on this truck. It has an aerial work bucket made of fiberglass that holds two linemen and their tools. It is attached to a two piece boom, the upper boom is fiberglass the lower boom is fabricated steel with a ten foot fiberglass center section that has a maximum height of 55 feet to the bottom of the bucket. Oh, and the upper boom is overcenter, meaning it can be extended beyond being inline with the lower boom, by about 15 degrees if I recall correctly.
It is also set up for light material handling, notice the short fiberglass boom and winch at the boomtip.
That whole mess is sitting on top of a double elevator unit that adds another 50 feet to the maximum bucket height.
Here's what it looks like all opened up: