 If they last long enough and the Earth spins for 24 hours, the whole planet gets crisp. The problem is it doesn't fry the lines. It fries the transformers. Just like we know back when the telegraph lines, they caught on fire. They caught the offices on fire. What's going to happen is it's not the lines that grow down. It's not the grid that's going to go down. It's the transformers. And as I understand it, 10 years ago when I was researching this,