It seems to me if they were trying to meet a deadline say for the j-plates they would just be working on those this weekend.
Same thing for the tensioner.
If they received a big order to fab some steel, then it seems just the fab shop would be working.
The most logical conclusion, in my mind anyways,
someone has seen the total orders coming into the plant,
and realized they needed to kick everything into high gear.
I think you are right Sage, they are trying to meet a deadline,
a very big one.