officials are now saying at this point there s no reasonable expectation that they survived. our cnn s brian todd, he s got more on the situation out of the gulf of mexico and why this just wasn t any oil rig. brian? suzanne, the coast guard is gearing up to deal with the potentially major oil spill from this disaster, but at the moment, there s no immediate evidence of a massive crude oil leak. we want to talk about the potential for a leak and about this remarkable rig that was lost. we re joined by bud dannonburger, he has just retired as the head of offshore safety operations for the minerals management service, the agency that regulates the oil industry in federal waters, bud, thanks very much for joining us. if there was any kind of leak from this rise or essential pipeline that connects the rig to the seafloor, where would it come? it would come from the top of the riser, where it s disconnected from the rig or possibly from an opening at the base of the riser, right above t