I come from a very heavy blue collar construction background, but after 87 went to college for architecture and information systems.
I started in the construction industry through a builder that my mom was an office manager for, and did nearly everything in the construction industry, in architectural, commercial and residential by the time I was 18.
I've held jobs in tech support where we unboxed as many as 1500+ PCs, keyboards, mice and 3000 monitors over the period of a week and installed them for a single co in Chicago. At that company we set up more than 40,000PCs over a two year period. I use to carry a small folder for protection b/c the job was in Chicago and sometimes the job would get out at 1AM on Friday and Saturday nights. I used a simple box cutter tool to open boxes, and always kept my personal protection sharp.