Keep bars and patrons safe from unruly people or crowds.
Observes patrons and employees participating in gambling activities to detect infractions of house rules: Watches participants in games such as dice or cards to detect cheating, identify rule violators, and observe persons designated by superior. Speaks or signals to supervising personnel using hand, telephone, or voice to identify and supply information about suspected violators. May examine dice periodically to check for damage or substitution. May calculate winnings to verify payment made by dealer.