well with, and they would have more success this time filling in the well with mud which would allow them to kill this well sooner. but, they still have a ways to go in terms of the planning right now. admiral thad allen not having anything bad to say about it, and said, even if they put the mud in there and find that there is a leak, that will be valuable information, as they move forward with that relief well. so, at this point, everyone is looking to see if this could the next weapon in the arsenal to finally kill this well. >> sounds a lot like the top kill that did not work out so well many weeks ago, and what is the difference? >> well, there is a huge difference here, because the top kill involved a cap that was open at the top. remember, we saw huge clouds of mud billowing out the top of the well, and they couldn't build up enough pressure to force that mud down and keep it down in the well. with this closed system, they will be able to pump that mud in there, and using less pressure than they did before, and they have a higher rate of confidence