A quick look through Google Maps leads me to believe that this is most likely the substation where it happened: https://www.google.com/maps/place/Page,+AZ+86040

A quick look through Google Maps leads me to believe that this is most likely the substation where it happened: https://www.google.com/maps/place/Page,+AZ+86040/@37.1431342,-112.0661026,438m/data=!3m1!1e3!4m5!3m4!1s0x8734135bfdcd758f:0x6e982f5153384e39!8m2!3d36.9147222!4d-111.4558333?hl=en https://www.google.com/maps/place/Page,+AZ+86040/@37.1431342... There's no perimeter security there to speak of - just a chain-link fence, and no bollards or anything else to keep someone from driving over it. There are plenty of attack vectors available for this sort of thing, though. I'm not sure it's even possible to effectively protect something like this.