Interesting FCC application for Apple Park GPS

Apple FCC application:

We seek to accomplish the following objectives:

1.Illumination of the part of the facility, located at 1 Apple Parkway, Cupertino, CA with a GPS signal to allow for the testing and experimentation indoors for continued exploration of utilizing GPS technologies within their devices to provide innovative applications and continue to provide safe products.

2.Further design, development and enhancement of existing GPS applications to provide greater efficiency and more effective means of utilizing GPS derived information.

Came across this on Reddit this morning. Wonder what this is for?