when it is closed in, it is at a higher pressure. so what is important here is to monitor the pressure both as we close it in, and once we get closed in very, very carefully. that is, i think, admiral allen has described this that the test goes from 6 hours to 48 hours depending upon how it responds. at that point, we will analyze the results and decide whether to close the well in or open it back up and contain the flow where some of it could potentially escape into the gulf of mexico. the risk through all of the process is that somehow flow escapes outside of the casing. that is something that we don't want to occur. because we never want to take any action which could make things worse. that is why it is important to get this test right. >> okay. is there any danger to the casing from the testing, itself? that is what i am driving at. >> right. that is what we are analyzing. it is one of the concerns raised yesterday that somehow through the testing process, could the