Thanks Joe. For the first quarter of 2020, the net loss attributable to Valero stockholders was $1.9 billion or $4.54 per share, compared to net income of $141 million or $0.34 per share for the first quarter of 2019. First quarter 2020 adjusted net income attributable to Valero stockholders was $140 million or $0.34 per share, compared to $181 million or $0.43 per share for the first quarter of 2019. First quarter 2020 adjusted results exclude an after-tax lower of cost or market, or LCM, inventory valuation adjustment of approximately $2 billion. For reconciliations of actual to adjusted amounts, please refer to the financial tables that accompany this release. The Refining segment generated an operating loss of $2.1 billion in the first quarter of 2020 compared to the $479 million of operating income for the first quarter of 2019. First quarter 2020 adjusted operating income for the refining segment, which excludes the LCM inventory valuation adjustment was $329 million. First quarter 2020 results were impacted by low product margins related to the COVID-19 pandemic and the rapid decline in crude prices. Refining throughput volumes averaged 2.8 million barrels per day, which was in line with the first quarter of 2019. Throughput capacity utilization was 90% in the first quarter of 2020. Refining cash operating expenses of $3.87 per barrel were $0.28 per barrel lower than the first quarter of 2019, primarily due to lower natural gas prices. Operating income for the renewable diesel segment was $198 million in the first quarter of 2020, compared to $49 million for the first quarter of 2019. After adjusting for the retroactive blender's tax credit, adjusted renewable diesel operating income was $121 million in the first quarter of 2019. The increase in operating income was primarily due to higher sales volumes. Renewable diesel sales volumes averaged 867,000 gallons per day in the first quarter of 2020, an increase of 77,000 gallons per day versus the first quarter of 2019. The Ethanol segment generated an operating loss of $197 million in the first quarter of 2020, compared to $3 million of operating income in the first quarter of 2019. The first quarter of 2020 adjusted operating loss, which excludes the LCM inventory valuation adjustment was $69 million. The decrease from the first quarter of 2019 was primarily due to lower margins resulting from lower ethanol prices and higher corn prices. Ethanol production volumes averaged 4.1 million gallons per day in the first quarter of 2020. For the first quarter of 2020, general and administrative expenses were $177 million and net interest expense was $125 million. Depreciation and amortization expense was $582 million and the income tax benefit was $616 million in the first quarter of 2020. The effective tax rate was 26%, which was impacted by an expected U.S. federal tax net operating loss that can be carried back to years prior to December 2017 enactment of tax reform in the U.S. Net cash used in operating activities was $49 million in the first quarter of 2020. Excluding the unfavorable impact from the change in working capital of $1.1 billion, as well as our joint venture partner's 50% share of Diamond Green Diesel's net cash provided by operating activities, excluding changes in its working capital, adjusted net cash provided by operating activities was $954 million. With regard to investing activities, we made $705 million of capital investments in the first quarter of 2020, of which approximately $468 million was for sustaining the business, including cost for turnarounds, catalysts and regulatory compliance. Approximately $237 million of the total was for growing the business. Excluding our partner's 50% share of Diamond Green Diesel's capital investments, Valero's capital investments were approximately $666 million. Moving to financing activities, we returned $548 million to our stockholders in the first quarter of 2020. $401 million was paid as dividends with the balance used to purchase 2.1 million shares of Valero common stock. The total pay-out ratio was 57% of adjusted net cash provided by operating activities. As of March 31, we had approximately $1.4 billion of share repurchase authorization remaining. And last week, our Board of Directors approved a quarterly dividend of $0.98 per share, further demonstrating our sound financial position and commitment to return cash to our investors. With respect to our balance sheet at quarter-end, total debt and finance lease obligations were $11.5 billion and cash and cash equivalents were $1.5 billion. The debt-to-capitalization ratio net of cash and cash equivalents was 34%. In April, we closed on a 364-day, $875 million revolving credit facility, which remains undrawn. Including this credit facility, we had over $5 billion of available borrowing capacity. Turning to guidance, we now expect annual capital investments for 2020 to be approximately $2.1 billion, reflecting a reduction of $400 million from our prior guidance. The $2.1 billion includes expenditures for turnarounds, catalysts, and joint venture investments. For modeling our second quarter operations, we expect refining throughput volumes to fall within the following ranges. U.S. Gulf Coast at 1.325 million to 1.375 million barrels per day. U.S. mid-continent at 315,000 to 335,000 barrels per day. U.S. West Coast at 215,000 to 235,000 barrels per day, and North Atlantic at 315,000 to 335,000 barrels per day. We expect refining cash operating expenses in the second quarter to be approximately $4.50 per barrel. Our ethanol segment is expected to produce a total of 2 million gallons per day in the second quarter. Operating expenses should average $0.49 per gallon, which includes $0.12 per gallon for non-cash costs, such as depreciation and amortization. With respect to the Renewable Diesel segment, we expect sales volumes to be 750,000 gallons per day in 2020. Operating expenses in 2020 should be $0.50 per gallon, which includes $0.20 per gallon for non-cash costs such as depreciation and amortization. For the second quarter, net interest expense should be about $145 million and total depreciation and amortization expense should be approximately $580 million. For 2020, we expect G&A expenses excluding corporate depreciation to be approximately $825 million, and we still expect the RIN's expense for the year to be between $300 million and $400 million. Lastly, due to the impact of beneficial tax provisions in the CARES Act, as well as the COVID-19 pandemic and its impact on our business, small changes and assumptions yield a wide range of outcomes, resulting in a low degree of confidence in any estimate of the effective tax rate. So, at this point, we're not providing any guidance on it. That concludes our opening remarks. Before we open the call to questions, we again respectfully request that callers adhere to our protocol of limiting each turn in the Q&A to two questions. If you have more than two questions, please re-join the queue as time permits. This helps us ensure other callers have time to ask their questions.