insert

an insert is a shot of part of a scene as filmed from a different angle and/or focal length from the main shot. Inserts cover action already covered in the master shot, but emphasise a different aspect of that action due to the different framing. 

I feel  that here the insert is used to empathise the arrival of the main character it also makes the scene more engaging for the audience as it give a differ point of view thus expand the scale of the problem  they face