There are reasons why cops retire at a younger age than most: You don’t want a 50-year-old trying to chase down thugs. The stress of the job takes a toll on people after many years. It is not uncommon for cops to die young of heart disease.
Cops that get older migrate to “safe” duties, usually desk jobs, motorcycle duty, etc. A couple guys I knew had it really sweet before retiring, keeping order at the ballpark during Giants games. When I was younger, I played on a department softball team playing against other department teams. In my forties, it was tough running down a ball in the outfield, felt my heart was exploding. Gave up playing ball at fifty, leaving it to younger guys.