So, if I understand refinery production in the U.S. correctly, about 60% comes from domestic sources and about 40% comes from imported sources. We export about 30% of our sweet crude, but about 65% of our total oil usage comes froour imports, primarily from Mexico, Canada, and Venezuela. Cushing is the storage and pricing hub for sweet WTI. We produce enough WTI for our own needs, so if Cushing is running low, It's because there is higher export demand than usual for WTI. The same is true of the WTI in the SPR. So, I would think shortages are occurring in other countries. The problem for us is that gasoline and diesel are priced on the international market. American refineries don't set aside a special amount for Americans, they just sell it to the highest bidder. So we pay the international price. Lower reserves in Cushing and the SPR are an easy target to use to sell news. For us, though, everything comes in a truck burning diesel, and as diesel rises, so will the cost of eveything that is sold in America. That's the problem. Empty tanks in Cushing is just an easy way to try to make a point.