The life of a guard is not easy. You're risking life and limb to protect whatever it is that you are protecting, and you get little thanks in return. Sometimes even you get tourists messing with you, getting in your face, ect. The long hours can be the worst part, just standing still and not being able to chat with anyone around you.
That's why it's so great to see a video like this, featuring a guard who is spending his time humoring a child. The child is imitating the soldier, walks up to him, and the soldier responds. You have to think that the soldier is a role model for the child, so we love seeing the soldier move with the kid.