remediation effort at that depth. how do you know any of this might work? >> well, you know, john, what we had was since the beginning, we wanted -- the goals were clear, stop the flow and minimize the impact and keep people informed. what we've been doing is pushing parallel paths because we don't know which one is going to work. on the stop the flow options, we still have several available to us. and that includes this, what we call the junk shot, also the same as top kill. pump the material in and plug up the blowout preventer and we also have an option available to us to put a valve or new blowout preventer on top of the existing one. what we're going to do is keep developing options and keep trying these options until we get this flow stopped. and ultimately the back stop is the relief well. >> is that happening now as well? you're still digging the relief