Actually instructing employees how to interact with government officials is on its own a quite reasonable training. Unless they were instructed on destroying evidence, there is nothing wrong with that. I work at an American company, and we get annual trainings which also cover legal aspects. Most of them are of course just the standard trainings about proper legal and ethical behavior.
The friend referenced gave the strong impression that things did not appear above board. This was a late career individual and stated that they had never seen anything like it.
They didn't provide any details beyond that. It's possible that the individual had just never experienced any legal compliance training, but based on their role I certainly expect they had.