agencies, so this was a very remarkable narrative of firepower, agencies, expertise, together in a short amount of time, rememberthis is together in a short amount of time, remember this is a remote location, 900 miles off the coast of the us. as we have the us coast guard said yesterday they wanted to throw everything they wanted to throw everything they had at this mission and tragically, it was not the ending they were hoping for. and now there will be focusing on recovery. carl nasman, thank you so much for that. for more reaction to this tragic ending, our science editor rebecca morelle spoke to james cameron who not only directed the titanic film, but is also an experienced ocean explorer. you have been down to the titanic wreck site many times. you have been even deeper, you did the first solo dive to the bottom of the mariana trench. and you came out and saw my sub before i went on that dive and it took you through the whole process, even sat inside it so