Never get out of the vehicle.
That struck me as well.
He is in an armored vehicle. But he gets out, supposedly *after* he is threatened with a gun.
Maybe he had the window rolled down and the perp aimed at him through the open window?
Maybe he took off the Rolex, and tossed it inside the car as he got out, as a distraction while he drew his pistol?
Lots of unknown details.