Didn't see any replies from current MSE Ops, so here goes...
This won't be of help regarding current vehicles. Our primary work-horse was the M135.
But, perhaps the attitude has at least remained somewhat consistent.
In the Service Corps I was a Transport Operator, later they called us MSE Ops.
So, we operated vehicles. But, I learned much more than that. Like customer service.
As I understood it, the unit we were servicing paid our unit for our time. So, we tried to give the best service possible, as you were representing your unit to the "contracting" unit.
At least, that's the way I understood it.
So, operators who did good work, tended to be offered more runs.
On Time Performance. Safety and courtesy. That the uniform we wore represented our command of a military vehicle.
Personal appearance was important. So was keeping your vehicle well maintained and clean.
I think those lessons learned helped me later in my full-time career.