Remember the case where the cop arrested the nurse for refusing to administer a blood draw without a warrant following a car accident?
He was so anxious to get the blood draw because his supervisor had told him to, because the other party in the MVA was an off-duty cop who was drunk and had blown through a red light. They were desperate to find anything to pin on the person in hospital (who later died) while stalling on a blood test for their fellow cop, so they could shift/diminish liability.