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Your advice in reality. where we are down here. downtown miami, i'm more than an hour from high tide, okay? but the difference in the wind and the difference in the storm surge already has this place water over the docks, the boats are straining their lines. the shoreline and where you see the bulk heads and the natural rock formations are already over capacity. the water is already going into parking areas. and again, storm is a day away. so the message is very simple -- it does not take much to make a major difference and that's why the officials here are saying, don't come back just because...

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 ...

Plastics and some composite materials. things like the overhead bins, the seat cushions, the cosmetic bulk heads, all those typically should still be floating. in a lot of cases, they are going to be intermingled with wire and other debris, so you may have a lot of smaller pieces mixed in, which might look like a larger piece from the satellite or the air. >> so the bottom line is, jim, the longer the search goes on, the more scattered the debris field is going to be and the harder it is to track down that plane. >> and our aviation analyst just made the point at the end of a long flight when ...

>> the supermarket is running out of a lot of things. toilet tissue, water. they are in need of things. so people are still, you know, filling in. >> i thank god for charity. helping people because they didn't have to do this. so, i'm thankful for it. >> here in seagate tonight, some are calling the federal government to do more. they say that the army corps of corps of engineers, for example, built up the jetties and bulk heads. the severity of the damage behind me that wouldn't have happened and they certainly don't want it to happen again, trace. >> trace: eric, do we have an idea how long ...

mattresses. some senators agree. they're ought to be a law. >> our current toxics law allows too many untested chemicals on the market. why should parents who would be left to wonder if the chemicals used in their baby's bottles, pacifiers, cribs are safe? the status quo is dangerous and unacceptable. >> cnn's dana bash joins me now with, dare i say, this rolling coverage. so what are these moms hoping to accomplish? >> reporter: what they want is basically information, and the backstory, the background, i should tell you, something that certainly i didn't realize as a new mom and ma...