I was working the stage at the FF assembly hall in Ca.
The edge of the stage has a raised surface.
From anywhere in the auditorium it would very difficult to see anyone's shoes.
The CO gave me the boot, because my shoes were not shiny. ( nice black suede shoes ). I was dumb and went into the audience and traded shoes with a friend that had shiny ones...
Years later, when I was trying to figure out what I doing and how to escape "privileges" first and the cult second, I remembered how to get booted off the stage. I wore slacks and a sports coat instead of a suit. ( ooops! ) They never saw me again.