A question about flying into Vegas

I recently (October) flew into Vegas with Virgin Atlantic.

I am a frequent flyer with them, and this time I was disappointed to find that their channel on the in-flight entertainment which allows you to follow the route of the flight was 'not working'.

I asked a member of the cabin crew if they could fix it and switch it on, but they never did.

It occurred to me that there might be a reason for this not being switched on, could it be that certain people do not want it to be known when we are flying close to restricted airspace perhaps?

I asked other people I met in Vegas and at the airport when I left. Many, including people on different flights to me, also noticed that this function was switched off on their inbound flight.

I was interested to see if the facility was working on my return flight-on a different aircraft.

Sure enough, again it was out of order, although it has always worked on every other Virgin flight I have ever taken.

Is this just an amazing coincidence?

I think it was working every time I went there.

I cannot see any reason to do so. nellis AFB is close but beyond the mega casinos???

I did post a thread a while back that the US was selectivly fuzzing GPS signals around nuclear power plants and the like, but aside from Nellis and the obvious civilian targets I can see no reason to not allow the tracker to be on. Or why would the airlines bother with the its broken bit? Much easier to place the blame on the government "Per the TSA directive the inflight GPS is down....."

Maybe the inflight tracker interrupts all the gambling machine in the casinos forcing them to pay out...