Poor trigger discipline; his finger was ALWAYS on the trigger. Plus, he has lost his gun and an extra magazine before, he was careless.
I don’t think poor trigger discipline or a previous episode of carelessness proves that this shooting was “accidental”. I might weigh in determining if this was negligent homicide vs. premeditated murder, but it does not rule out intent at all. He drew the weapon, he purposefully pointed the weapon at Ashli Babbit and he pulled the trigger. Those are the objective facts we know. Placing his finger on the trigger might illustrate poor training, poor judgment or a purposeful act showing he intended to shoot all along.