When security staff are forced to deal with an extreme situation $,$ such as a person with a weapon or someone showing bizarre behaviour $,$ the main goal that should guide their actions is to Oremove any object the problem customer is holding and then restrain that person until police arrive Ouse natural barriers $,$ such as chairs and tables $,$ and aggressive tactics to show that security staff are in charge Ominimize the risk of injury $,$ ensuring their own safety and the safety of others until the police arrive Ofind the person or group of patrons the problem customer came with $,$ and get them to take him or her home