Have you controlled access to the building you are tasked to secure? Check. Ensuring that only people who belong in the office building is the obvious and essential first step to security. All of the side doors are locked and have alarms to make sure that no one goes in or out through anywhere but the main entrance. You have placed signs directing people to the clearly marked front of the building to make sure that no one can bypass your security measures. You have installed turnstiles in the lobby that are operated with a unique key card to make sure that only people who belong inside can get inside. You have security guards manning the visitor’s desk to check the bags of anyone who doesn't work in the building and to issue them a temporary pass once they have an escort. Regardless of how elaborate the system your building uses to control who can get into your building, controlling those entry points is only the first step to actually preventing outsiders, crime, and violence from occurring within.