i know several that do their jobs very well.
im not doubting him doing his job.
what I am doubting is him going through proper chain of command when it involves his superior. Not so much what I'd deem "professional courtesy" but more of him going to another superior and stating the case because in reality, even though the officer did his job, he still made himself look just as bad as those who were guilty for no other reason he is in the agency as well. It's not so much about him doing his job, as it is how it should be handled from start to finish to avoid a $h!tshow.
I would think there would be protocols to follow for situations like this. Sure, there shouldn't have to be but in reality, regardless of the profession, people make mistakes and human nature will prevail at some point.