transponder and the acars actually zoned in a little bit. but the positive thing the black boxes were under the ocean for two years before they were discovered. and that means the gps which has a 30-day battery life would have run out. >> we had a smaller indication where it went down, that is a huge difference, two years later. >> exactly, as mike points out. >> and from facebook, dan writes, if flight 370 continues to go undiscovered, how much longer will they search? >> sal, i imagine they have to look for a long time. >> they have to look for a long time, this is a boeing airplane, american-made airplane, we have to know what happened. find the black boxes, the debris, even the debris alone will help us analyze it and get a good indication of did the thing blow up? land somewhere? is it even there? >> good point, mike baker, your thoughts, how long does it go