I have trained, FTO'ed, and supervised countless cops' kids. I use the word "kids" here because there were many whom I watched grow up. There were a very few who felt they were entitled to a free pass and perceived themselves as veterans without experience. A perennial supervisor's problem child, for they already knew everything about the job - so they thought.
You know the type; they sat around the family table and listened to stories of yesteryear, past exploits, and policing the way it "used to be." Now, they felt it was their turn. And they were armed with all the knowledge they would need. But there's a problem here: the war stories they overheard could have been embellished during an afterhours chat (yes, cops do that). Laws, policies, and the American policing style have changed since then. We need to temper these legendary stories.
Avoid Shortcuts and Biases
FTOs and trainers can have a nightmare of a time here. I have seen far too many examples of the elder cop having taught or told his progeny of shortcuts for completing cases or tasks. The young officer needs to learn the correct way to do everything, not a condensed fashion.
There have been a few that were told of the weaknesses or traits of their bosses, judges, or DAs, and how to manipulate the system. Most often the elder is setting up the young officer for insubordination or ill feelings. As I told one officer whose parent passed along preconceived notions about a former coworker, certain issues prevailed between his dad and the supervisor in question. It would be best for the young officer to make his own measure of the person in question; it is all about being fair. Going over FTOs' heads and seeking preferential treatment has been noted as well.