They hire you not because you are capable of doing a seemingly "simple" job but because you're willing to listen and be trained to be efficient and do it all safely (in your driving, picking up heavy boxes, walking on slippery sidewalks) many hours each and every day.
There's a lot in shooting which constitute efficiencies and doing it all safely. I found the parallels useful.
Their drills are bloodless battles, and their battles bloody drills.
- Historian Josephus (AD 37-101) on the Roman military