basically the same thing as the capping stack that bp just put over its damaged blowout preventer. it would also use manifolds on the sea floor and hoses to bring oil to the surface, all similar to what bp developed over the course of three months. "minding your business" this morning, i talk more about this plan with the president of shell oil, marvin odom. >> what we're proposing to put together is a lot like having the latest technology in a fire truck and a firestation with a crew trained and ready to go. so this is a matter of thinking across the conditions in the gulf of mexico, various depths, currents and that type of thing, prebuilding, engineering and prebuilding all of the equipment we made need for various scenarios and having that ready to go. so very adaptable, scaleable to different volumes that may be required to be addressed. >> you said that this is scaleable to work at any depth, i think it is up to 10,000 feet. how can you be certain that it will work up to 10,000 feet?