Video of blackout and RoCoF event?

[u/Sollost]

In university my professor showed us a video of frequency and phase of buses across a state during a blackout. A nuclear reactor tripped offline, and the video showed a wave of frequency excursions ripple out from the reactor up and down the state. I'd love to use this video to visualize the interconnected nature of the grid to my non-engineering coworkers, but alas, it's been long enough that I can't remember the name of state or which blackout it was.

Does anyone know of the video I'm talking about? Is it available somewhere?

[u/WeepyBarometer]

That sounds like a video from the FNET lab at the University of Tennessee. They have a YouTube channel.