Max the Mad Russian
Hands off Ukraine! Feet too
There are a lot of officer billets which need long years of experience to be done well/safely or require a high degree of technical knowdge that your average O-3-over-six isn't going to possess.
In some NWC Review, past century, there was an article written by trio of Berkeley or Stanford professors (MBA&Psychology) that posed that the core reason for USN aircraft carrier smooth work on a daily basis is the CPO corps, relatively constant to each ship. How could they to pass over the mustangs? Or back then, in 1980s, things were different?