With a degree in criminal justice, you can get a job running a jail, But you might have to start out on the floor.
You can manage security where ever they have security. Hospitals.
You can be a policeman deputy sheriff, if you stay fit. I've seen and heard of deputys in their 70's.
You could get into internet security.
And most large companies have a security department that someone has to run.
Also with a degree you would have a foot in the door in completely unrelated fields.