Yes that is a very real and present danger, one I don't like to think of often, if I did, it would give me nightmares. but the possibilities of such a disaster are at our front door and reaching the point they can no longer be ignored.
With so much money being invested it is hard to see how this will end well.
I reckon we need to remain as informed as we can about where such systems are deployed, and carefully keep our heads on swivels when we can't avoid depending on them.
Yep totally agree, being aware of where they are used and limiting our exposure in regards to the risks associated with possible infastructure issues is definitely something we need to keep an eye on.