What are the the good things of having security

About me

My name is Marshay Willingham and my favorite color is pink. I also like playing volleyball, basketball and running track. My essential question is, What are the benefits of having security if it doesnt help you? The reason i asked this question is because i saw on the news that the security let a tresspasser come over the gate and let this person get close to the president. I think you should read my blog because if they can barely keep the president safe from a tresspasser than how are they going to protect us.