If anyone is uncomfortable with this please delete it, I mean no disrespect to anyone here.

Also, I do not know the track at Fontana so this impression may be wrong, but the one thing that struck me most when looking at the NBC4 footage was how the concrete barrier is almost perpendicular to the track. About halfway through the video you can see a very wide shot of the scene where it seems like they were building some sort of stage, and temporarily moved the barriers to go around it. I think you can even see the prints on the grass of where the barrier used to be.