There are others.
I guess the secondary question in terms of the equipment and the backup, the so-called fail-safe mechanisms--I'm not sure that British Petroleum can use that exact term anymore--is that it is also operating at that great depth. What BP has told the world is that capping the well with the equipment--the submarines and whatnot--is so much more difficult than it would be at a depth of 100 metres. When you're down at 1,500 metres, you can't have manned subs. You have to use different things. Everything becomes a greater challenge. That's recognized by the industry. Is that correct?