Sometimes you need backup. Even when you're management. I've had to bail out my employees far more often than they've had to come to my rescue, but having my great thundering ox of a bookkeeper appear from the back rooms with fire in his eyes and his fists clenched in fury once saved me having to call the police on a hostile customer. The little bastard in question practically levitated out the door.

Obviously, we lost his custom. Some things, however, are well worth the price.
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