The security guard’s concern is to protect persons and prevent damage or destruction to property. PREVENTION is the key word. For example, if you spotted some young people trying to climb a fence to enter private property, you should shout at them or turn on the lights. Do anything lawful that would discourage their trespassing, don’t wait until they cross the fence so you can arrest them. Another typical situation might be: A person intends to steal from a store, but suddenly sees a uniformed security guard on patrol. The person leaves the store without stealing anything. The guard, simply by being in uniform, has prevented a crime