Okay kiddo, so you know how there are people who help keep us safe, like police officers? Well, the Department of the Air Force Police are kind of like police officers, but specifically they work for the Air Force.
Their job is to make sure that everyone who works or visits the Air Force base is following the rules and being safe. They make sure that people aren't doing things that could put others in danger, like driving too fast or bringing dangerous items onto the base.
They also help keep important places and things safe, like airplanes and weapons. And if there is a problem or emergency, they are the ones who help fix it and keep everyone calm.
So basically, the Department of the Air Force Police are like special police officers who work to keep the Air Force and the people who are there safe and secure.