These latest sightings by the Australians and Chinese make me optimistic, that they're narrowing it down. If the plane did drop to 12,000 ft as reported last night, someone must have still been around to bring it back up to cruising altitude. I'm still confident in Inmarsat, Captain Kremlin's analysis overlaid by the weather satellite's contrail photos, so I can't see it staying at 12,000 for long, if that's actually true. A few days ago, I would have been surprised if they found the FDR and CVR before the pinger batteries ran out. Now, I think they'll do it.