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Unknowns, internal bulk heads and tanks may have imploded on the way down. you don't know if you can rely on the buoyancy of the tanks when you go to put air in them, for instance. good salvage companies typically have a plan a, b, and c, so that when they run into the unknown or more information becomes 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 ...

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...

Scenario. jenna: that was janice dean, the first meteorologist to predict the monster storm that hurricane sandy would turn out to be and she made the call right here on "happening now." just five days before the storm made landfall exactly one year ago today. that's how much notice we had. bringing with it, she had torrential flooding and hurricane force winds. you've seen the damage, you've seen the footage. what was it about sandy that made it so dangerous? why has this year's hurricane season been so tame? we don't want to jinx anything. here now is meteorologist janice dean. >> can you be...