Certainly.
Again, this is not hard and fast evidence. We don't have solid evidence to...but the information we do have is that a decision was made as they were in the process of getting ready to terminate or abandon the well. Ordinarily what would happen is that before you would do that you would set a cement plug and seal the interior of the well bore and then you would circulate out the drilling mud with enhanced sea water or brine.
What we believe happened at the Macondo well is that they circulated the mud out prior to setting or establishing this cement plug. So that barrier was removed. The second barrier then should have been, and would have been, the blowout preventer, but for some reason the blowout preventer failed. We don't know why that failed or what the mechanism of failure was. There was some speculation that it may have been a control system, but the remotely operated vehicle should have been able to activate it once they got to it. They turned all the right handles but it still didn't activate.
So we know there was some sort of failure within the BOP but we don't what that was, and we won't know until such time as that BOP is eventually recovered.