 Give people a sense, just to set the stage, Roger, because, again, I know you've been a consistent guest on the last couple of years because lithium-ion battery fires are popping up in the news more and more. How common are lithium-ion batteries in our everyday lives? I don't know if people realize we're not just talking about the battery in your cell phones, correct? Correct. Anything you're plugging in today to recharge it from...