A significant part of most security guard roles includes dealing with the public and delivering a good impression on those you come across during your shift. The interviewer wants to know that you are capable of keeping your cool when dealing with difficult or even angry people. If you have any formal customer service training, this is a good time to mention what you learned and how you apply it in your work.

"I have done a lot of security work in a retail environment. In this type of environment, I dealt with people and attitudes of all kinds. I recall one woman around the holidays who was not allowed to make returns on boxing day because that was the store policy. It was simply too busy to process and re-stock returned items. She became irate and was screaming at the cashier, demanding her way. I approached the counter and asked her to lower her voice, or she would be removed from the store and banned from returning. She immediately realized the fuss she was causing and apologized before leaving."