SheepShaggerNZ

How long were you in the area for? You mentioned that you drove a truck full of men to the area. What did you do after getting there apart from the parade? Did you get the feeling that others above or around you knew what was really going on?

Engineering classes. First to arrive, last to leave.

Being automatic doesn't mean it doesn't need tuning though. Most of the PID control is done by PLCs or other digital controllers and the setpoints still need to be adjusted for changes in the real world.

They said 'without leaving evidence'