Credibility for a police officer means ALWAYS telling the truth, even when it goes against you, and NEVER having to guess what the truth is. I had a perp accuse meof lying on the stand once. The judge stopped him in mid sentence and told him that Officer Keith's credibility would never come into question as long as he sat on the bench because he had heard me telling it straight for too many years to ever believe I was not 100%, bang on, telling the truth, both against and in favour of the defendant.
