John Kerry: “We're spending billions--literally, actually, trillions.”

We will communicate to the office that you're asking and that it's important to try to get to it as soon as possible.

But, we could with battery. We could with-- there's ways to make that work.

Back-up baseload, no. But, some primary they could be part of it.

The message is, let's find a way to be able to make sure when we fly, we're not leaving emissions that we cannot capture.