A transformer exploded at a factory that makes tank engines in Chelyabinsk, Russia.

I imagine with how many workers have been removed from the workforce (or in many cases, from existence) that there is a fuck ton of industrial and utility maintenance that just isn't able to get done.

Entirely possible it was an effective strike of some kind... But also possible that critical infrastructure is eroding to the point that "catastrophic failures" are on the menu.