If the pings are not from Flight 370… where did they come from?

It was the most promising lead in the search for Flight 370, but now investigators say those underwater pings did not come from the missing plane's black boxes. Those pings helped shape the search zone and set the path for the underwater sub. So where does the search go now? Anderson got the latest from Rene Marsh, aviation correspondent Richard Quest and analyst David Gallo, who co-led the search for Air France Flight 447.