Being able to look underneath the water. This is a nuclear submarine. It is hms tireless from the u. K. It is advanced search capabilities, equipped with the latest sonar technology. And it is designed for warfare. Able to hunt out nuclear sub marines as well as nuclear surface ships. If it can find anything, this is the best tool in the arsenal yet for search teams. But the challenge, anderson, theyve got to be able to find it. Its still a big sea out there. I understand has the search area, is it still the same search area its been for the last couple of days . I thought i awe is a new update that looked like maybe it had shifted somewhat. Youre absolutely right. It hayes shifted slightly east. Lets take a look look at this map. The latest information were getting from the australian authorities. It has shifted slightly. The emphasis is slightly. Every single day this search area does shift. Were getting just this latest information from the australian authorities. Ten aircraft will
reporter: the remote underwater vehicles can only carry about 4,000 pounds. anything heavier like a large piece of the fuselage will have to be attached to a cable and pulled to the surface by a crane on the ship. keep in mind this could be happening miles below the surface, an incredibly difficult task. still, no doubt salvage teams will keep their eyes peeled for the black box, hoping to get some much-needed answers first. randi kaye, cnn, new york. fascinating technology. joining me once again is david gal low. also with us sylvan pasco, a technical adviser in the investigation of the flight 447 crash. it s one thing to look at the technology as we did in that piece. i m also fascinated, this is essentially a human operation. it s human effort being exerted out of the sea. what is it like to be out there? what is it like to try to constantly be searching, to constantly not have enough information? it s got to be so difficult.