Altitude Dips News Today

>> thank you. >> a few things we should wade through here. first off, the search coordinator angus houston discounting radar equipment that indicated these altitude dips, something we talked about right here on cnn. the plane went up. it went down. you have said from the beginning, if i go back through my mental hard drive, had you said from the beginning that the altitude data was an assumption. is that primary radar even reliable for determining altitude? >> not for altitude, no, not for altit...