It's like he said. The Navy is one unified organization under a command system.
The police are not. Every city and county have an independent department. Every state has a different department.
It's not a unified system like the military
I know I've came down hard on the cops in question in this thread - and it thank you for admitting this agency messed up here.
Agree things like this are the outliers.
Also important to remember. Each of those many individual departments vary in size, funding, training, leadership, "department culture", etc.
They may be a large agency with 1000's of officers or a tiny, local police department with less than 10 officers.
Your mileage may vary considerably between all of those departments when it comes to things like budget, training, professionalism and quality of officers they can attract and retain, polices, procedures, equipment, communications, how the department deals with the public, etc.
In other words, just like the quality of care you get at Mt. Sinai Hospital in NYC may be different than you would get at a walk-in clinic in Hazard KY, the very same thing applies when it comes to police departments.
Note: - I am not necessarily saying that is a good thing. But, it is a thing.