“Could he have reached into his waistband?”
If he was reaching for his waistband, why did Shelby say he was reaching into his vehicle?
That would be his vehicle with the closed door and closed window.
The point is when he lowered his arms he became an immediate mortal threat. Whether he was trying to get into his car through the door or an open window is immaterial. He made a move in the direction of his car. He could have gotten a gun in seconds. The officers life was in danger. It was actually in danger the whole time he ignored her orders. This isn’t the old west were you tell the guy to draw first.