What do officers in patrol cars do?

What do officers in patrol cars do?
an officer wears many cloaks. we are couselor's, babysitters, first responders, law enforcers, etc. officers provide a public service of protection and also help solve situations most people would think grown adults can solve. but since some people in the world obviously cant do anything without being told or having their hand held, thats when officers step in. officers are there to help, take a bullet, provide medical attention until ems/emt arrives, provide protection to each and every tax payer.