Side note that was probably my favorite job of all time, think about an air traffic controller but for trains. I would sit in the office with like 6 screens, camera's that could zoom in on every area of the yard, a radio with like 6 channels on it where I could talk to trains/our switch crew/our yard crew/train repair people/etc. You would move these little colored boxes from the stacks to empty train cars on the computer screen and the yard workers would follow your instructions, it was like playing a video game but if I mumped up someone might die.
But it was also 12 hr shifts 5am-5pm, every other weekend including holidays which kind of got old after a while.