they tested it. it did not turn out to be aircraft oil or hydraulic fluid of any sort. so they've ruled it out as being part of mh370. that said, the bluefin is down again for its fourth dive, a 16-hour dive. they are going through the data from that third dive to see if it proved anything, and it will continue to search this area. this as we're hearing from both the transport minister in malaysia and the australian prime minister here, that if they don't find anything in the specific area in the next five or seven days or so, that they may have to go back to the maps to figure out where else to search and go to the next best location in this very large area. keep in mind ha the u.s. poseidons are still up every day as are the p 3s from australians and from new zealand, all of them looking on the surface of the ocean hoping to find debris, hoping to find some physical evidence that mh370 went down.