beginning to see why that is. was it a human error, a mechanical error? the steering, it's not like you have a big screw that turns the screws. there are wires connecting it. so it could be anything along that series. >> jim, thank you very much. more now on this sad string of incidents, and what the navy is trying to do about it. michelle kaczynski joins me with that. the tourt time this year a u.s. warship is involved in an incident. the navy has done a day freeze of activity? >> even one of these accidents was shocking. i remember when the first one happened. then there's another, another, another. even setting aside this one, it could have been something mechanical, but there are big problems in the other three. the last one that just happened in june, the "uss fitzgerald" also there in asia, it turns out, even though the investigation isn't over, members of the crew made serious mistakes. so from that time, the navy has