shortages with some of the refineries impacted and rail lines suspended? >> it is something we're monitoring closely. we have not seen, to date, that as an issue. but we will closely monitor that and we'll continue to over the coming days. >> is the white house along the same lines considering or see the need for waivers to deal -- >> well, as you noted, the jones act, which we talked quite a bit about just a few weeks ago, there are a range of tools at our disposal that the federal government has. to address fuel supply shortages during natural disasters by issuing emergency waivers of certain fuel standards in affected areas, and obviously, if warranted by circumstances, epa's temporary waivers can help ensure that adequate supply of fuel is available. epa, as well as several components of the government, are in touch with our state partners in louisiana and mississippi as well as operators of refineries, pipelines, tanks and other infrastructure to assess the situation on the ground and what needs exist to ensure the supply of transportation fuel. we have not made that assessment