jim bittermann is near the shores of gold beach right now in france. and just remarkable to be there, jim, on any day is to be overwhelmed by the significance of where you are on the map and what happened there, but today, 70 years, it's even more so. >> reporter: well, exactly, that's right, christine. in fact, we're about halfway along these beaches, 60 miles of beaches where the landings took place, and here at aromange, this is the site of the artificial harbor that was built. just to give you an idea of the kind of thing they had to plan for, they weren't going to take after the disasters of 1942, they were not going to take any of the harbors, the natural harbors that they could have along the coast. they were worried about doing that. so, they brought these artificial harbors like this one here, created out of gigantic, floating concrete casons, which were floated across the channel from england and were sunk here and from which they made a break water and then were able to make a pier that would bring in all the vehicles and what not that they n