through. that's what they did with the -- >> martin, can you ask him to turn that on? >> chris? >> can you ask him to turn the cutting thing on? >> well, the thing is -- we have -- one of the cutting things we are going to show you next hour. this particular one right now is we're kind of hung on a rock. we're not in a position to do that. and then this is also realistically, some of the issues you can run into is when the submersible sets down, or rov, maybe it may be, the bottom itself can be a hazard. >> certainly. you we know, we're expecting that the bottom in that area will probably be very fine silt and very floury type bottom so as far as you sat down on it you immediately stir up a cloud of sediment and particularly when you're using down thrusters the sediment just rolls in. so you have to make your move quickly. do what you're going to do because the big dust cloud following you and then you have to sit and wait for it to settle down so you can see again. so it's a t matter of slow,