let's go to cnn center and chad myers, chad, walk us through, how did they stop this? >> they took apart the old top of the well, larry, the riser pipe went up, it bent over, kinked it made itself unusable. they cut it off. they took it away. it still doesn't sealable. so what they did is they, take the oil away. you can see it. the original gap, here, they put on here, was leaking. it always leaked, the oil always came out the other size, because of this nipple we'll call it down here the rest of the riser pipe. it was bent. it wasn't straight. they brought a machine down. they took the bolts out. they took this thing away. then they brought in a brand new piece that they just built. a cleaner piece with belter edges. they brought it down. and stacked it right on top of the old blowout preventer. what that did -- that allowed now a better sealing piece to be laid on top. not that old clunky looking cap that they put on earlier. there is a nice clean ring, clamp on to the ring, now had a good seal. good seal here and good seal to the new cap. kind of a blowout prevente