 So the pandemic shut down oil prices to literally less than zero. It was the first time in history we've been tracking the price of oil that you had at fall below zero. And that was because the pandemic froze the economy. Suddenly people weren't driving, they weren't flying, they weren't using oil. So drillers drilled less. And so when you have the economy come back online, you don't have the production that you would have had. So you don't have enough oil.