Run up on me

A man in a light-colored shirt and dark pants stands in a warehouse doorway, initially facing away from the camera, then turns and walks toward the open door as a forklift carrying a large load enters the frame from the outside. The man turns back toward the interior, then suddenly falls backward onto the floor as the forklift passes through the doorway, and he remains on the ground as the forklift exits. The scene takes place inside a warehouse with a large blue roll-up door and industrial equipment.