Sounds Being News Today

The black boxes pinger has a roughly 30-day battery life and that means it could stop transmitting a signal anytime now. jon: david piper is streaming live from bangkok, thailand. david, we have had plenty of false alarms before. how credible are these latest reports of sounds being detected underwater? >> reporter: hi, jon. yes, lots of false leads and a lots of wasted time. the australians are being very cautious but theyre described it as a promising lead. perhaps the key to their statement t...