I worked flights with a guy who as the CP was generally very measured, but when they elevated him to the DO he went on a massive power trip. Interestingly the guy who he replaced was busted by company tech for watching porn all day at work. So yes the higher you get it can be a problem. As far as military and police, I worked with a former Marine Core drill instructor and retired cop. They had a lot more in check emotionally and mentally than many of our supposedly “cosmopolitan” individuals.