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Pontoons, that gives you 35 tons of lift. you could use the water ballast tanks to help give you buoyancy. you will have to do a lot of inspections in the pre-salvage plan. >> they have a big, difficult job ahead of them. just ahead for us, a chicago doctor is among three americans killed in a shooting at a hospital in afghanistan. and you will not believe who the alleged gunman was. (music) defiance is in our bones. defiance never grows old. citracal maximum. calcium citrate plus d. highly soluble, easily absorbed.

Available through the project they can then alter and be flexible to adjust with the realities. >> and dave davidson, we just had the piece from gary tuchman, and it is not just as simple as hooking up a crane, is it? >> oh, no, you have to have a lot of different salvage techniques, there is possibly computer modelling. you have to make a plan so you know exactly how you will do the salvage before you do it. and then it is not hooking a crane up. you may remove weight, that is one way you can use salvage pontoons, that gives you 35 tons of lift. you could use the water ballast tanks to help g...