going to be an easy task at all. we're talking about water that is as deep as three miles in some areas. and this particular part of the ocean, there's a part of it called broken ridge. just speaking to david gallow, one of our analysts, he says that is a mountain which has a very streep decline. the decline could be, you know, two, three miles just from top to bottom. so it's going to be tough. but the good thing is they do have a ship there that's mapping the ocean floor so at least they know what they're going to be up against when they do start the underwater search. >> and richard, if in fact everyone on that plane lost oxygen, everyone in effect was dead, the plane was on auto pilot, u it could fly until it ran out of gas. >> right. >> and then it would glide for a while too? it could glide for a significant time, right? >> that's the significance of this report. it goes into those scenarios. what would have happened. first of all, the left engine probably would have flamed out,