Mathews gets into a Dodge patrol car and drives off to find Wells. The next scene shows a Mercury patrol car as Wells looks on. Then in the next scene, it's the Dodge again with Matthews parking and exiting with Geiger counter in hand.
In the opening scene a camera/cameraman is reflected in the rear doors of the cargo truck as it backs up to the unloading bay.
Since Harry Wells had contact with the little girl's doll, shouldn't they have checked her out with the Geiger counter.