Actually I should add a 4th category since I know several officers on my dept who retired and are now part time campus cops at BYU.
- Officers who retired from another agency and are looking to supplement their pension. So you get 50 and sixty something year old officers. Which is a very mixed bag as most officers as they near retirement age enter into what is known as being Retired on Duty which means they show up and do as little as possible. So while there may be a wealth of experience there often are no more ***** left to give and they will do the bare minimum at their new job as well. Or they have may decades of admin experience but little street experience - one of the cops from my department hasn’t done patrol work in 30 years (he was admin the whole time) until he went to BYU where he now takes calls again - yeah good luck with that victims given he’s in his 60’s and has no actual experience in the last 30 years doing actual police work.