Nine out of ten times they hinder the situation from a engineers point of view.
I must admit that watching the marshalling can provide entertainment, it certainly isn't carried out IAW the ANO. I wonder what the flight deck boys make of it.
Another point is why they get such a hard on from having speed traps within the airport.
We all have jobs to do, but these guys take it too far. The phrase "jobsworth" suits them down to the ground.
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"Noted With Thanks"